mirror of https://github.com/k3s-io/k3s
fully implement kubeadm-phase-certs - stash
fabriziopandini
parent
4361b4d9be
commit
c2e9052aea
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@ -13,7 +13,6 @@ go_library(
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srcs = [
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"cmd.go",
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"completion.go",
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"defaults.go",
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"init.go",
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"join.go",
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"reset.go",
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@ -31,13 +30,13 @@ go_library(
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"//cmd/kubeadm/app/node:go_default_library",
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"//cmd/kubeadm/app/phases/addons:go_default_library",
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"//cmd/kubeadm/app/phases/apiconfig:go_default_library",
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"//cmd/kubeadm/app/phases/certs:go_default_library",
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"//cmd/kubeadm/app/phases/controlplane:go_default_library",
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"//cmd/kubeadm/app/phases/kubeconfig:go_default_library",
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"//cmd/kubeadm/app/phases/selfhosting:go_default_library",
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"//cmd/kubeadm/app/phases/token:go_default_library",
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"//cmd/kubeadm/app/preflight:go_default_library",
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"//cmd/kubeadm/app/util:go_default_library",
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"//cmd/kubeadm/app/util/config:go_default_library",
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"//cmd/kubeadm/app/util/kubeconfig:go_default_library",
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"//cmd/kubeadm/app/util/token:go_default_library",
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"//pkg/api:go_default_library",
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@ -55,7 +54,6 @@ go_library(
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"//vendor/k8s.io/apimachinery/pkg/apis/meta/v1:go_default_library",
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"//vendor/k8s.io/apimachinery/pkg/fields:go_default_library",
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"//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library",
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"//vendor/k8s.io/apimachinery/pkg/util/net:go_default_library",
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"//vendor/k8s.io/apimachinery/pkg/version:go_default_library",
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"//vendor/k8s.io/apiserver/pkg/util/flag:go_default_library",
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"//vendor/k8s.io/client-go/kubernetes:go_default_library",
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@ -66,7 +64,6 @@ go_library(
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go_test(
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name = "go_default_test",
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srcs = [
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"defaults_test.go",
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"reset_test.go",
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"token_test.go",
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],
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@ -31,16 +31,17 @@ import (
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kubeadmapi "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm"
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kubeadmapiext "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/v1alpha1"
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"k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/validation"
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cmdphases "k8s.io/kubernetes/cmd/kubeadm/app/cmd/phases"
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kubeadmconstants "k8s.io/kubernetes/cmd/kubeadm/app/constants"
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addonsphase "k8s.io/kubernetes/cmd/kubeadm/app/phases/addons"
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apiconfigphase "k8s.io/kubernetes/cmd/kubeadm/app/phases/apiconfig"
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certphase "k8s.io/kubernetes/cmd/kubeadm/app/phases/certs"
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controlplanephase "k8s.io/kubernetes/cmd/kubeadm/app/phases/controlplane"
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kubeconfigphase "k8s.io/kubernetes/cmd/kubeadm/app/phases/kubeconfig"
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selfhostingphase "k8s.io/kubernetes/cmd/kubeadm/app/phases/selfhosting"
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tokenphase "k8s.io/kubernetes/cmd/kubeadm/app/phases/token"
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"k8s.io/kubernetes/cmd/kubeadm/app/preflight"
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kubeadmutil "k8s.io/kubernetes/cmd/kubeadm/app/util"
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configutil "k8s.io/kubernetes/cmd/kubeadm/app/util/config"
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"k8s.io/kubernetes/pkg/api"
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"k8s.io/kubernetes/pkg/util/version"
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)
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@ -164,11 +165,20 @@ func NewInit(cfgPath string, cfg *kubeadmapi.MasterConfiguration, skipPreFlight,
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}
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// Set defaults dynamically that the API group defaulting can't (by fetching information from the internet, looking up network interfaces, etc.)
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err := setInitDynamicDefaults(cfg)
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err := configutil.SetInitDynamicDefaults(cfg)
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if err != nil {
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return nil, err
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}
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fmt.Printf("[init] Using Kubernetes version: %s\n", cfg.KubernetesVersion)
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fmt.Printf("[init] Using Authorization mode: %v\n", cfg.AuthorizationModes)
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// Warn about the limitations with the current cloudprovider solution.
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if cfg.CloudProvider != "" {
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fmt.Println("[init] WARNING: For cloudprovider integrations to work --cloud-provider must be set for all kubelets in the cluster.")
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fmt.Println("\t(/etc/systemd/system/kubelet.service.d/10-kubeadm.conf should be edited for this purpose)")
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}
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if !skipPreFlight {
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fmt.Println("[preflight] Running pre-flight checks")
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@ -202,7 +212,7 @@ func (i *Init) Validate(cmd *cobra.Command) error {
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func (i *Init) Run(out io.Writer) error {
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// PHASE 1: Generate certificates
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err := certphase.CreatePKIAssets(i.cfg)
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err := cmdphases.CreatePKIAssets(i.cfg)
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if err != nil {
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return err
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}
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@ -5,6 +5,7 @@ licenses(["notice"])
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load(
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"@io_bazel_rules_go//go:def.bzl",
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"go_library",
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"go_test",
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)
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go_library(
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@ -21,16 +22,31 @@ go_library(
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"//cmd/kubeadm/app/apis/kubeadm:go_default_library",
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"//cmd/kubeadm/app/apis/kubeadm/v1alpha1:go_default_library",
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"//cmd/kubeadm/app/apis/kubeadm/validation:go_default_library",
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"//cmd/kubeadm/app/constants:go_default_library",
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"//cmd/kubeadm/app/phases/certs:go_default_library",
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"//cmd/kubeadm/app/phases/certs/pkiutil:go_default_library",
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"//cmd/kubeadm/app/phases/kubeconfig:go_default_library",
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"//cmd/kubeadm/app/phases/selfhosting:go_default_library",
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"//cmd/kubeadm/app/preflight:go_default_library",
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"//cmd/kubeadm/app/util:go_default_library",
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"//cmd/kubeadm/app/util/config:go_default_library",
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"//cmd/kubeadm/app/util/kubeconfig:go_default_library",
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"//pkg/api:go_default_library",
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"//vendor/github.com/spf13/cobra:go_default_library",
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"//vendor/k8s.io/apimachinery/pkg/util/net:go_default_library",
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"//vendor/k8s.io/apimachinery/pkg/util/validation/field:go_default_library",
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],
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)
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go_test(
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name = "go_default_test",
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srcs = ["certs_test.go"],
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library = ":go_default_library",
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tags = ["automanaged"],
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deps = [
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"//cmd/kubeadm/app/apis/kubeadm/install:go_default_library",
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"//cmd/kubeadm/app/constants:go_default_library",
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"//cmd/kubeadm/app/phases/certs/pkiutil:go_default_library",
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"//vendor/github.com/renstrom/dedent:go_default_library",
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"//vendor/github.com/spf13/cobra:go_default_library",
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],
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)
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@ -17,18 +17,20 @@ limitations under the License.
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package phases
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import (
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"crypto/rsa"
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"crypto/x509"
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"fmt"
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"net"
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"github.com/spf13/cobra"
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netutil "k8s.io/apimachinery/pkg/util/net"
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"k8s.io/apimachinery/pkg/util/validation/field"
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kubeadmapi "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm"
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kubeadmapiext "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/v1alpha1"
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"k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/validation"
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kubeadmconstants "k8s.io/kubernetes/cmd/kubeadm/app/constants"
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certphase "k8s.io/kubernetes/cmd/kubeadm/app/phases/certs"
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"k8s.io/kubernetes/cmd/kubeadm/app/phases/certs/pkiutil"
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kubeadmutil "k8s.io/kubernetes/cmd/kubeadm/app/util"
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configutil "k8s.io/kubernetes/cmd/kubeadm/app/util/config"
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"k8s.io/kubernetes/pkg/api"
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)
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@ -40,63 +42,342 @@ func NewCmdCerts() *cobra.Command {
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RunE: subCmdRunE("certs"),
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}
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cmd.AddCommand(NewCmdSelfSign())
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cmd.AddCommand(newSubCmdCerts()...)
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return cmd
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}
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func NewCmdSelfSign() *cobra.Command {
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// TODO: Move this into a dedicated Certificates Phase API object
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// newSubCmdCerts returns sub commands for certs phase
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func newSubCmdCerts() []*cobra.Command {
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cfg := &kubeadmapiext.MasterConfiguration{}
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// Default values for the cobra help text
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api.Scheme.Default(cfg)
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cmd := &cobra.Command{
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Use: "selfsign",
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Short: "Generate the CA, APIServer signing/client cert, the ServiceAccount public/private keys and a CA and client cert for the front proxy",
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Run: func(cmd *cobra.Command, args []string) {
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var cfgPath string
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var subCmds []*cobra.Command
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// Run the defaulting once again to take passed flags into account
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api.Scheme.Default(cfg)
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internalcfg := &kubeadmapi.MasterConfiguration{}
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api.Scheme.Convert(cfg, internalcfg, nil)
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err := RunSelfSign(internalcfg)
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kubeadmutil.CheckErr(err)
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subCmdProperties := []struct {
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use string
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short string
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cmdFunc func(cfg *kubeadmapi.MasterConfiguration) error
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}{
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{
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use: "all",
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short: "Generate all PKI assets necessary to establish the control plane",
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cmdFunc: CreatePKIAssets,
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},
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{
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use: "ca",
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short: "Generate CA certificate and key for a Kubernetes cluster.",
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cmdFunc: createOrUseCACertAndKey,
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},
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{
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use: "apiserver",
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short: "Generate API Server serving certificate and key.",
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cmdFunc: createOrUseAPIServerCertAndKey,
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},
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{
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use: "apiserver-kubelet-client",
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short: "Generate a client certificate for the API Server to connect to the kubelets securely.",
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cmdFunc: createOrUseAPIServerKubeletClientCertAndKey,
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},
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{
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use: "sa",
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short: "Generate a private key for signing service account tokens along with its public key.",
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cmdFunc: createOrUseServiceAccountKeyAndPublicKey,
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},
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{
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use: "front-proxy-ca",
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short: "Generate front proxy CA certificate and key for a Kubernetes cluster.",
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cmdFunc: createOrUseFrontProxyCACertAndKey,
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},
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{
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use: "front-proxy-client",
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short: "Generate front proxy CA client certificate and key for a Kubernetes cluster.",
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cmdFunc: createOrUseFrontProxyClientCertAndKey,
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},
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}
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cmd.Flags().StringVar(&cfg.Networking.DNSDomain, "dns-domain", cfg.Networking.DNSDomain, "The DNS Domain for the Kubernetes cluster.")
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cmd.Flags().StringVar(&cfg.CertificatesDir, "cert-dir", cfg.CertificatesDir, "The path where to save and store the certificates.")
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cmd.Flags().StringVar(&cfg.Networking.ServiceSubnet, "service-cidr", cfg.Networking.ServiceSubnet, "The subnet for the Services in the cluster.")
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cmd.Flags().StringSliceVar(&cfg.APIServerCertSANs, "cert-altnames", []string{}, "Optional extra altnames to use for the API Server serving cert. Can be both IP addresses and dns names.")
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cmd.Flags().StringVar(&cfg.API.AdvertiseAddress, "apiserver-advertise-address", cfg.API.AdvertiseAddress, "The IP address the API Server will advertise it's listening on. 0.0.0.0 means the default network interface's address.")
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return cmd
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for _, properties := range subCmdProperties {
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// Creates the UX Command
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cmd := &cobra.Command{
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Use: properties.use,
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Short: properties.short,
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Run: runCmdFunc(properties.cmdFunc, &cfgPath, cfg),
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}
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// Add flags to the command
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cmd.Flags().StringVar(&cfgPath, "config", cfgPath, "Path to kubeadm config file (WARNING: Usage of a configuration file is experimental)")
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cmd.Flags().StringVar(&cfg.CertificatesDir, "cert-dir", cfg.CertificatesDir, "The path where to save and store the certificates")
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if properties.use == "all" || properties.use == "apiserver" {
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cmd.Flags().StringVar(&cfg.Networking.DNSDomain, "service-dns-domain", cfg.Networking.DNSDomain, "Use alternative domain for services, e.g. \"myorg.internal\"")
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cmd.Flags().StringVar(&cfg.Networking.ServiceSubnet, "service-cidr", cfg.Networking.ServiceSubnet, "Use alternative range of IP address for service VIPs")
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cmd.Flags().StringSliceVar(&cfg.APIServerCertSANs, "apiserver-cert-extra-sans", []string{}, "Optional extra altnames to use for the API Server serving cert. Can be both IP addresses and dns names.")
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cmd.Flags().StringVar(&cfg.API.AdvertiseAddress, "apiserver-advertise-address", cfg.API.AdvertiseAddress, "The IP address the API Server will advertise it's listening on. 0.0.0.0 means the default network interface's address.")
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}
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subCmds = append(subCmds, cmd)
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}
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return subCmds
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}
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// RunSelfSign generates certificate assets in the specified directory
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func RunSelfSign(config *kubeadmapi.MasterConfiguration) error {
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if err := validateArgs(config); err != nil {
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return fmt.Errorf("The argument validation failed: %v", err)
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// runCmdFunc creates a cobra.Command Run function, by composing the call to the given cmdFunc with necessary additional steps (e.g preparation of inpunt parameters)
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func runCmdFunc(cmdFunc func(cfg *kubeadmapi.MasterConfiguration) error, cfgPath *string, cfg *kubeadmapiext.MasterConfiguration) func(cmd *cobra.Command, args []string) {
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// the following statement build a clousure that wraps a call to a CreateCertFunc, binding
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// the function itself with the specific parameters of each sub command.
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// Please note that specific parameter should be passed as value, while other parameters - passed as reference -
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// are shared between sub commnands and gets access to current value e.g. flags value.
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return func(cmd *cobra.Command, args []string) {
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internalcfg := &kubeadmapi.MasterConfiguration{}
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// Takes passed flags into account; the defaulting is executed once again enforcing assignement of
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// static default values to cfg only for values not provided with flags
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api.Scheme.Default(cfg)
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api.Scheme.Convert(cfg, internalcfg, nil)
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// Loads configuration from config file, if provided
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// Nb. --config overrides command line flags
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err := configutil.TryLoadMasterConfiguration(*cfgPath, internalcfg)
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kubeadmutil.CheckErr(err)
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// Applies dynamic defaults to settings not provided with flags
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err = configutil.SetInitDynamicDefaults(internalcfg)
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kubeadmutil.CheckErr(err)
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// Validates cfg (flags/configs + defaults + dynamic defaults)
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err = validation.ValidateMasterConfiguration(internalcfg).ToAggregate()
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kubeadmutil.CheckErr(err)
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// Execute the cmdFunc
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err = cmdFunc(internalcfg)
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kubeadmutil.CheckErr(err)
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}
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}
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// CreatePKIAssets will create and write to disk all PKI assets necessary to establish the control plane.
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// Please note that this action is a bulk action calling all the atomic certphase actions
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func CreatePKIAssets(cfg *kubeadmapi.MasterConfiguration) error {
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certActions := []func(cfg *kubeadmapi.MasterConfiguration) error{
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createOrUseCACertAndKey,
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createOrUseAPIServerCertAndKey,
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createOrUseAPIServerKubeletClientCertAndKey,
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createOrUseServiceAccountKeyAndPublicKey,
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createOrUseFrontProxyCACertAndKey,
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createOrUseFrontProxyClientCertAndKey,
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}
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// If it's possible to detect the default IP, add it to the SANs as well. Otherwise, just go with the provided ones
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ip, err := netutil.ChooseBindAddress(net.ParseIP(config.API.AdvertiseAddress))
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if err == nil {
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config.API.AdvertiseAddress = ip.String()
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}
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if err = certphase.CreatePKIAssets(config); err != nil {
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for _, action := range certActions {
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err := action(cfg)
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if err != nil {
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return err
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}
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}
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fmt.Printf("[certificates] Valid certificates and keys now exist in %q\n", cfg.CertificatesDir)
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return nil
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}
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// createOrUseCACertAndKey create a new self signed CA, or use the existing one.
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func createOrUseCACertAndKey(cfg *kubeadmapi.MasterConfiguration) error {
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return createOrUseCertificateAuthorithy(
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cfg.CertificatesDir,
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kubeadmconstants.CACertAndKeyBaseName,
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"CA",
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certphase.NewCACertAndKey,
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)
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}
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// createOrUseAPIServerCertAndKey create a new CA certificate for apiserver, or use the existing one.
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// It assumes the CA certificates should exists into the CertificatesDir
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func createOrUseAPIServerCertAndKey(cfg *kubeadmapi.MasterConfiguration) error {
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return createOrUseSignedCertificate(
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cfg.CertificatesDir,
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kubeadmconstants.CACertAndKeyBaseName,
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kubeadmconstants.APIServerCertAndKeyBaseName,
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"API server",
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func(caCert *x509.Certificate, caKey *rsa.PrivateKey) (*x509.Certificate, *rsa.PrivateKey, error) {
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return certphase.NewAPIServerCertAndKey(cfg, caCert, caKey)
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},
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)
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}
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// create a new CA certificate for kubelets calling apiserver, or use the existing one
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// It assumes the CA certificates should exists into the CertificatesDir
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func createOrUseAPIServerKubeletClientCertAndKey(cfg *kubeadmapi.MasterConfiguration) error {
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return createOrUseSignedCertificate(
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cfg.CertificatesDir,
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kubeadmconstants.CACertAndKeyBaseName,
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kubeadmconstants.APIServerKubeletClientCertAndKeyBaseName,
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"API server kubelet client",
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certphase.NewAPIServerKubeletClientCertAndKey,
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)
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}
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// createOrUseServiceAccountKeyAndPublicKey create a new public/private key pairs for signing service account user, or use the existing one.
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func createOrUseServiceAccountKeyAndPublicKey(cfg *kubeadmapi.MasterConfiguration) error {
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return createOrUseKeyAndPublicKey(
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cfg.CertificatesDir,
|
||||
kubeadmconstants.ServiceAccountKeyBaseName,
|
||||
"service account",
|
||||
certphase.NewServiceAccountSigningKey,
|
||||
)
|
||||
}
|
||||
|
||||
// createOrUseFrontProxyCACertAndKey create a new self signed front proxy CA, or use the existing one.
|
||||
func createOrUseFrontProxyCACertAndKey(cfg *kubeadmapi.MasterConfiguration) error {
|
||||
|
||||
return createOrUseCertificateAuthorithy(
|
||||
cfg.CertificatesDir,
|
||||
kubeadmconstants.FrontProxyCACertAndKeyBaseName,
|
||||
"front-proxy CA",
|
||||
certphase.NewFrontProxyCACertAndKey,
|
||||
)
|
||||
}
|
||||
|
||||
// createOrUseFrontProxyClientCertAndKey create a new certificate for proxy server client, or use the existing one.
|
||||
// It assumes the front proxy CA certificates should exists into the CertificatesDir
|
||||
func createOrUseFrontProxyClientCertAndKey(cfg *kubeadmapi.MasterConfiguration) error {
|
||||
|
||||
return createOrUseSignedCertificate(
|
||||
cfg.CertificatesDir,
|
||||
kubeadmconstants.FrontProxyCACertAndKeyBaseName,
|
||||
kubeadmconstants.FrontProxyClientCertAndKeyBaseName,
|
||||
"front-proxy client",
|
||||
certphase.NewFrontProxyClientCertAndKey,
|
||||
)
|
||||
}
|
||||
|
||||
// createOrUseCertificateAuthorithy is a generic function that will create a new certificate Authorithy using the given newFunc,
|
||||
// assign file names according to the given baseName, or use the existing one already present in pkiDir.
|
||||
func createOrUseCertificateAuthorithy(pkiDir string, baseName string, UXName string, newFunc func() (*x509.Certificate, *rsa.PrivateKey, error)) error {
|
||||
|
||||
// If cert or key exists, we should try to load them
|
||||
if pkiutil.CertOrKeyExist(pkiDir, baseName) {
|
||||
|
||||
// Try to load .crt and .key from the PKI directory
|
||||
caCert, _, err := pkiutil.TryLoadCertAndKeyFromDisk(pkiDir, baseName)
|
||||
if err != nil {
|
||||
return fmt.Errorf("failure loading %s certificate: %v", UXName, err)
|
||||
}
|
||||
|
||||
// Check if the existing cert is a CA
|
||||
if !caCert.IsCA {
|
||||
return fmt.Errorf("certificate %s is not a CA", UXName)
|
||||
}
|
||||
|
||||
fmt.Printf("[certificates] Using the existing %s certificate and key.\n", UXName)
|
||||
} else {
|
||||
// The certificate and the key did NOT exist, let's generate them now
|
||||
caCert, caKey, err := newFunc()
|
||||
if err != nil {
|
||||
return fmt.Errorf("failure while generating %s certificate and key: %v", UXName, err)
|
||||
}
|
||||
|
||||
// Write .crt and .key files to disk
|
||||
if err = pkiutil.WriteCertAndKey(pkiDir, baseName, caCert, caKey); err != nil {
|
||||
return fmt.Errorf("failure while saving %s certificate and key: %v", UXName, err)
|
||||
}
|
||||
|
||||
fmt.Printf("[certificates] Generated %s certificate and key.\n", UXName)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
func validateArgs(config *kubeadmapi.MasterConfiguration) error {
|
||||
allErrs := field.ErrorList{}
|
||||
allErrs = append(allErrs, validation.ValidateNetworking(&config.Networking, field.NewPath("networking"))...)
|
||||
allErrs = append(allErrs, validation.ValidateAbsolutePath(config.CertificatesDir, field.NewPath("cert-dir"))...)
|
||||
allErrs = append(allErrs, validation.ValidateAPIServerCertSANs(config.APIServerCertSANs, field.NewPath("cert-altnames"))...)
|
||||
allErrs = append(allErrs, validation.ValidateIPFromString(config.API.AdvertiseAddress, field.NewPath("apiserver-advertise-address"))...)
|
||||
// createOrUseSignedCertificate is a generic function that will create a new signed certificate using the given newFunc,
|
||||
// assign file names according to the given baseName, or use the existing one already present in pkiDir.
|
||||
func createOrUseSignedCertificate(pkiDir string, CABaseName string, baseName string, UXName string, newFunc func(*x509.Certificate, *rsa.PrivateKey) (*x509.Certificate, *rsa.PrivateKey, error)) error {
|
||||
|
||||
return allErrs.ToAggregate()
|
||||
// Checks if certificate authorithy exists in the PKI directory
|
||||
if !pkiutil.CertOrKeyExist(pkiDir, CABaseName) {
|
||||
return fmt.Errorf("couldn't load certificate authorithy for %s from certificate dir", UXName)
|
||||
}
|
||||
|
||||
// Try to load certificate authorithy .crt and .key from the PKI directory
|
||||
caCert, caKey, err := pkiutil.TryLoadCertAndKeyFromDisk(pkiDir, CABaseName)
|
||||
if err != nil {
|
||||
return fmt.Errorf("failure loading certificate authorithy for %s: %v", UXName, err)
|
||||
}
|
||||
|
||||
// Make sure the loaded CA cert actually is a CA
|
||||
if !caCert.IsCA {
|
||||
return fmt.Errorf("certificate authorithy for %s is not a CA", UXName)
|
||||
}
|
||||
|
||||
// Checks if the signed certificate exists in the PKI directory
|
||||
if pkiutil.CertOrKeyExist(pkiDir, baseName) {
|
||||
// Try to load signed certificate .crt and .key from the PKI directory
|
||||
signedCert, _, err := pkiutil.TryLoadCertAndKeyFromDisk(pkiDir, baseName)
|
||||
if err != nil {
|
||||
return fmt.Errorf("failure loading %s certificate: %v", UXName, err)
|
||||
}
|
||||
|
||||
// Check if the existing cert is signed by the given CA
|
||||
if err := signedCert.CheckSignatureFrom(caCert); err != nil {
|
||||
return fmt.Errorf("certificate %s is not signed by corresponding CA", UXName)
|
||||
}
|
||||
|
||||
fmt.Printf("[certificates] Using the existing %s certificate and key.\n", UXName)
|
||||
} else {
|
||||
// The certificate and the key did NOT exist, let's generate them now
|
||||
signedCert, signedKey, err := newFunc(caCert, caKey)
|
||||
if err != nil {
|
||||
return fmt.Errorf("failure while generating %s key and certificate: %v", UXName, err)
|
||||
}
|
||||
|
||||
// Write .crt and .key files to disk
|
||||
if err = pkiutil.WriteCertAndKey(pkiDir, baseName, signedCert, signedKey); err != nil {
|
||||
return fmt.Errorf("failure while saving %s certificate and key: %v", UXName, err)
|
||||
}
|
||||
|
||||
fmt.Printf("[certificates] Generated %s certificate and key.\n", UXName)
|
||||
if pkiutil.HasServerAuth(signedCert) {
|
||||
fmt.Printf("[certificates] %s serving cert is signed for DNS names %v and IPs %v\n", UXName, signedCert.DNSNames, signedCert.IPAddresses)
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// createOrUseKeyAndPublicKey is a generic function that will create a new public/private key pairs using the given newFunc,
|
||||
// assign file names according to the given baseName, or use the existing one already present in pkiDir.
|
||||
func createOrUseKeyAndPublicKey(pkiDir string, baseName string, UXName string, newFunc func() (*rsa.PrivateKey, error)) error {
|
||||
|
||||
// Checks if the key exists in the PKI directory
|
||||
if pkiutil.CertOrKeyExist(pkiDir, baseName) {
|
||||
|
||||
// Try to load .key from the PKI directory
|
||||
_, err := pkiutil.TryLoadKeyFromDisk(pkiDir, baseName)
|
||||
if err != nil {
|
||||
return fmt.Errorf("%s key existed but they could not be loaded properly: %v", UXName, err)
|
||||
}
|
||||
|
||||
fmt.Printf("[certificates] Using the existing %s key.\n", UXName)
|
||||
} else {
|
||||
// The key does NOT exist, let's generate it now
|
||||
key, err := newFunc()
|
||||
if err != nil {
|
||||
return fmt.Errorf("failure while generating %s key: %v", UXName, err)
|
||||
}
|
||||
|
||||
// Write .key and .pub files to disk
|
||||
if err = pkiutil.WriteKey(pkiDir, baseName, key); err != nil {
|
||||
return fmt.Errorf("failure while saving %s key: %v", UXName, err)
|
||||
}
|
||||
|
||||
if err = pkiutil.WritePublicKey(pkiDir, baseName, &key.PublicKey); err != nil {
|
||||
return fmt.Errorf("failure while saving %s public key: %v", UXName, err)
|
||||
}
|
||||
fmt.Printf("[certificates] Generated %s key and public key.\n", UXName)
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
|
|
|||
|
|
@ -0,0 +1,270 @@
|
|||
/*
|
||||
Copyright 2017 The Kubernetes Authors.
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
||||
*/
|
||||
|
||||
package phases
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"html/template"
|
||||
"io/ioutil"
|
||||
"os"
|
||||
"path"
|
||||
"testing"
|
||||
|
||||
"github.com/renstrom/dedent"
|
||||
"github.com/spf13/cobra"
|
||||
|
||||
// required for triggering api machinery startup when running unit tests
|
||||
_ "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm/install"
|
||||
|
||||
kubeadmconstants "k8s.io/kubernetes/cmd/kubeadm/app/constants"
|
||||
"k8s.io/kubernetes/cmd/kubeadm/app/phases/certs/pkiutil"
|
||||
)
|
||||
|
||||
func TestSubCmdCertsCreateFiles(t *testing.T) {
|
||||
|
||||
subCmds := newSubCmdCerts()
|
||||
|
||||
var tests = []struct {
|
||||
subCmds []string
|
||||
expectedFiles []string
|
||||
}{
|
||||
{
|
||||
subCmds: []string{"all"},
|
||||
expectedFiles: []string{
|
||||
kubeadmconstants.CACertName, kubeadmconstants.CAKeyName,
|
||||
kubeadmconstants.APIServerCertName, kubeadmconstants.APIServerKeyName,
|
||||
kubeadmconstants.APIServerKubeletClientCertName, kubeadmconstants.APIServerKubeletClientKeyName,
|
||||
kubeadmconstants.ServiceAccountPrivateKeyName, kubeadmconstants.ServiceAccountPublicKeyName,
|
||||
kubeadmconstants.FrontProxyCACertName, kubeadmconstants.FrontProxyCAKeyName,
|
||||
kubeadmconstants.FrontProxyClientCertName, kubeadmconstants.FrontProxyClientKeyName,
|
||||
},
|
||||
},
|
||||
{
|
||||
subCmds: []string{"ca"},
|
||||
expectedFiles: []string{kubeadmconstants.CACertName, kubeadmconstants.CAKeyName},
|
||||
},
|
||||
{
|
||||
subCmds: []string{"ca", "apiserver"},
|
||||
expectedFiles: []string{kubeadmconstants.CACertName, kubeadmconstants.CAKeyName, kubeadmconstants.APIServerCertName, kubeadmconstants.APIServerKeyName},
|
||||
},
|
||||
{
|
||||
subCmds: []string{"ca", "apiserver-kubelet-client"},
|
||||
expectedFiles: []string{kubeadmconstants.CACertName, kubeadmconstants.CAKeyName, kubeadmconstants.APIServerKubeletClientCertName, kubeadmconstants.APIServerKubeletClientKeyName},
|
||||
},
|
||||
{
|
||||
subCmds: []string{"sa"},
|
||||
expectedFiles: []string{kubeadmconstants.ServiceAccountPrivateKeyName, kubeadmconstants.ServiceAccountPublicKeyName},
|
||||
},
|
||||
{
|
||||
subCmds: []string{"front-proxy-ca"},
|
||||
expectedFiles: []string{kubeadmconstants.FrontProxyCACertName, kubeadmconstants.FrontProxyCAKeyName},
|
||||
},
|
||||
{
|
||||
subCmds: []string{"front-proxy-ca", "front-proxy-client"},
|
||||
expectedFiles: []string{kubeadmconstants.FrontProxyCACertName, kubeadmconstants.FrontProxyCAKeyName, kubeadmconstants.FrontProxyClientCertName, kubeadmconstants.FrontProxyClientKeyName},
|
||||
},
|
||||
}
|
||||
|
||||
for _, test := range tests {
|
||||
// Temporary folder for the test case
|
||||
tmpdir, err := ioutil.TempDir("", "")
|
||||
if err != nil {
|
||||
t.Fatalf("Couldn't create tmpdir")
|
||||
}
|
||||
defer os.RemoveAll(tmpdir)
|
||||
|
||||
// executes given sub commands
|
||||
for _, subCmdName := range test.subCmds {
|
||||
subCmd := getSubCmd(t, subCmdName, subCmds)
|
||||
subCmd.SetArgs([]string{fmt.Sprintf("--cert-dir=%s", tmpdir)})
|
||||
if err := subCmd.Execute(); err != nil {
|
||||
t.Fatalf("Could not execute subcommand: %s", subCmdName)
|
||||
}
|
||||
}
|
||||
|
||||
// verify expected files are there
|
||||
assertFilesCount(t, tmpdir, len(test.expectedFiles))
|
||||
for _, file := range test.expectedFiles {
|
||||
assertFileExists(t, tmpdir, file)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestSubCmdApiServerFlags(t *testing.T) {
|
||||
|
||||
subCmds := newSubCmdCerts()
|
||||
|
||||
// Temporary folder for the test case
|
||||
tmpdir, err := ioutil.TempDir("", "")
|
||||
if err != nil {
|
||||
t.Fatalf("Couldn't create tmpdir")
|
||||
}
|
||||
defer os.RemoveAll(tmpdir)
|
||||
|
||||
// creates ca cert
|
||||
subCmd := getSubCmd(t, "ca", subCmds)
|
||||
subCmd.SetArgs([]string{fmt.Sprintf("--cert-dir=%s", tmpdir)})
|
||||
if err := subCmd.Execute(); err != nil {
|
||||
t.Fatalf("Could not execute subcommand ca")
|
||||
}
|
||||
|
||||
// creates apiserver cert
|
||||
subCmd = getSubCmd(t, "apiserver", subCmds)
|
||||
subCmd.SetArgs([]string{
|
||||
fmt.Sprintf("--cert-dir=%s", tmpdir),
|
||||
"--apiserver-cert-extra-sans=foo,boo",
|
||||
"--service-cidr=10.0.0.0/24",
|
||||
"--service-dns-domain=mycluster.local",
|
||||
"--apiserver-advertise-address=1.2.3.4",
|
||||
})
|
||||
if err := subCmd.Execute(); err != nil {
|
||||
t.Fatalf("Could not execute subcommand apiserver")
|
||||
}
|
||||
|
||||
APIserverCert, err := pkiutil.TryLoadCertFromDisk(tmpdir, kubeadmconstants.APIServerCertAndKeyBaseName)
|
||||
if err != nil {
|
||||
t.Fatalf("Error loading API server certificate: %v", err)
|
||||
}
|
||||
|
||||
hostname, err := os.Hostname()
|
||||
if err != nil {
|
||||
t.Errorf("couldn't get the hostname: %v", err)
|
||||
}
|
||||
for i, name := range []string{hostname, "kubernetes", "kubernetes.default", "kubernetes.default.svc", "kubernetes.default.svc.mycluster.local"} {
|
||||
if APIserverCert.DNSNames[i] != name {
|
||||
t.Errorf("APIserverCert.DNSNames[%d] is %s instead of %s", i, APIserverCert.DNSNames[i], name)
|
||||
}
|
||||
}
|
||||
for i, ip := range []string{"10.0.0.1", "1.2.3.4"} {
|
||||
if APIserverCert.IPAddresses[i].String() != ip {
|
||||
t.Errorf("APIserverCert.IPAddresses[%d] is %s instead of %s", i, APIserverCert.IPAddresses[i], ip)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestSubCmdReadsConfig(t *testing.T) {
|
||||
|
||||
subCmds := newSubCmdCerts()
|
||||
|
||||
var tests = []struct {
|
||||
subCmds []string
|
||||
expectedFileCount int
|
||||
}{
|
||||
{
|
||||
subCmds: []string{"sa"},
|
||||
expectedFileCount: 2,
|
||||
},
|
||||
{
|
||||
subCmds: []string{"front-proxy-ca", "front-proxy-client"},
|
||||
expectedFileCount: 4,
|
||||
},
|
||||
{
|
||||
subCmds: []string{"ca", "apiserver", "apiserver-kubelet-client"},
|
||||
expectedFileCount: 6,
|
||||
},
|
||||
{
|
||||
subCmds: []string{"all"},
|
||||
expectedFileCount: 12,
|
||||
},
|
||||
}
|
||||
|
||||
for _, test := range tests {
|
||||
// Temporary folder for the test case
|
||||
tmpdir, err := ioutil.TempDir("", "")
|
||||
if err != nil {
|
||||
t.Fatalf("Couldn't create tmpdir")
|
||||
}
|
||||
defer os.RemoveAll(tmpdir)
|
||||
|
||||
configPath := saveDummyCfg(t, tmpdir)
|
||||
|
||||
// executes given sub commands
|
||||
for _, subCmdName := range test.subCmds {
|
||||
subCmd := getSubCmd(t, subCmdName, subCmds)
|
||||
subCmd.SetArgs([]string{fmt.Sprintf("--config=%s", configPath)})
|
||||
if err := subCmd.Execute(); err != nil {
|
||||
t.Fatalf("Could not execute command: %s", subCmdName)
|
||||
}
|
||||
}
|
||||
|
||||
// verify expected files are there
|
||||
// NB. test.expectedFileCount + 1 because in this test case the tempdir where key/certificates
|
||||
// are saved contains also the dummy configuration file
|
||||
assertFilesCount(t, tmpdir, test.expectedFileCount+1)
|
||||
}
|
||||
}
|
||||
|
||||
func getSubCmd(t *testing.T, name string, subCmds []*cobra.Command) *cobra.Command {
|
||||
for _, subCmd := range subCmds {
|
||||
if subCmd.Name() == name {
|
||||
return subCmd
|
||||
}
|
||||
}
|
||||
t.Fatalf("Unable to find sub command %s", name)
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func assertFilesCount(t *testing.T, dirName string, count int) {
|
||||
files, err := ioutil.ReadDir(dirName)
|
||||
if err != nil {
|
||||
t.Fatalf("Couldn't read files from tmpdir: %s", err)
|
||||
}
|
||||
|
||||
if len(files) != count {
|
||||
t.Errorf("dir does contains %d, %d expected", len(files), count)
|
||||
for _, f := range files {
|
||||
t.Error(f.Name())
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func assertFileExists(t *testing.T, dirName string, fileName string) {
|
||||
path := path.Join(dirName, fileName)
|
||||
if _, err := os.Stat(path); os.IsNotExist(err) {
|
||||
t.Errorf("file %s does not exist", fileName)
|
||||
}
|
||||
}
|
||||
|
||||
func saveDummyCfg(t *testing.T, dirName string) string {
|
||||
|
||||
path := path.Join(dirName, "dummyconfig.yaml")
|
||||
cfgTemplate := template.Must(template.New("init").Parse(dedent.Dedent(`
|
||||
apiVersion: kubeadm.k8s.io/v1alpha1
|
||||
kind: MasterConfiguration
|
||||
certificatesDir: {{.CertificatesDir}}
|
||||
`)))
|
||||
|
||||
f, err := os.Create(path)
|
||||
if err != nil {
|
||||
t.Errorf("error creating dummyconfig file %s: %v", path, err)
|
||||
}
|
||||
|
||||
templateData := struct {
|
||||
CertificatesDir string
|
||||
}{
|
||||
CertificatesDir: dirName,
|
||||
}
|
||||
|
||||
err = cfgTemplate.Execute(f, templateData)
|
||||
if err != nil {
|
||||
t.Errorf("error generating dummyconfig file %s: %v", path, err)
|
||||
}
|
||||
f.Close()
|
||||
|
||||
return path
|
||||
}
|
||||
|
|
@ -37,10 +37,12 @@ const (
|
|||
APIServerCertAndKeyBaseName = "apiserver"
|
||||
APIServerCertName = "apiserver.crt"
|
||||
APIServerKeyName = "apiserver.key"
|
||||
APIServerCertCommonName = "kube-apiserver" //used as subject.commonname attribute (CN)
|
||||
|
||||
APIServerKubeletClientCertAndKeyBaseName = "apiserver-kubelet-client"
|
||||
APIServerKubeletClientCertName = "apiserver-kubelet-client.crt"
|
||||
APIServerKubeletClientKeyName = "apiserver-kubelet-client.key"
|
||||
APIServerKubeletClientCertCommonName = "kube-apiserver-kubelet-client" //used as subject.commonname attribute (CN)
|
||||
|
||||
ServiceAccountKeyBaseName = "sa"
|
||||
ServiceAccountPublicKeyName = "sa.pub"
|
||||
|
|
@ -53,6 +55,7 @@ const (
|
|||
FrontProxyClientCertAndKeyBaseName = "front-proxy-client"
|
||||
FrontProxyClientCertName = "front-proxy-client.crt"
|
||||
FrontProxyClientKeyName = "front-proxy-client.key"
|
||||
FrontProxyClientCertCommonName = "front-proxy-client" //used as subject.commonname attribute (CN)
|
||||
|
||||
AdminKubeConfigFileName = "admin.conf"
|
||||
KubeletKubeConfigFileName = "kubelet.conf"
|
||||
|
|
|
|||
|
|
@ -15,7 +15,7 @@ go_test(
|
|||
tags = ["automanaged"],
|
||||
deps = [
|
||||
"//cmd/kubeadm/app/apis/kubeadm:go_default_library",
|
||||
"//vendor/k8s.io/client-go/util/cert:go_default_library",
|
||||
"//cmd/kubeadm/app/constants:go_default_library",
|
||||
],
|
||||
)
|
||||
|
||||
|
|
@ -31,7 +31,6 @@ go_library(
|
|||
"//cmd/kubeadm/app/constants:go_default_library",
|
||||
"//cmd/kubeadm/app/phases/certs/pkiutil:go_default_library",
|
||||
"//pkg/registry/core/service/ipallocator:go_default_library",
|
||||
"//vendor/k8s.io/apimachinery/pkg/util/sets:go_default_library",
|
||||
"//vendor/k8s.io/apimachinery/pkg/util/validation:go_default_library",
|
||||
"//vendor/k8s.io/client-go/util/cert:go_default_library",
|
||||
],
|
||||
|
|
|
|||
|
|
@ -23,7 +23,6 @@ import (
|
|||
"net"
|
||||
"os"
|
||||
|
||||
setutil "k8s.io/apimachinery/pkg/util/sets"
|
||||
"k8s.io/apimachinery/pkg/util/validation"
|
||||
certutil "k8s.io/client-go/util/cert"
|
||||
kubeadmapi "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm"
|
||||
|
|
@ -32,257 +31,139 @@ import (
|
|||
"k8s.io/kubernetes/pkg/registry/core/service/ipallocator"
|
||||
)
|
||||
|
||||
// TODO: Integration test cases
|
||||
// no files exist => create all four files
|
||||
// valid ca.{crt,key} exists => create apiserver.{crt,key}
|
||||
// valid ca.{crt,key} and apiserver.{crt,key} exists => do nothing
|
||||
// invalid ca.{crt,key} exists => error
|
||||
// only one of the .crt or .key file exists => error
|
||||
// NewCACertAndKey will generate a self signed CA.
|
||||
func NewCACertAndKey() (*x509.Certificate, *rsa.PrivateKey, error) {
|
||||
|
||||
// CreatePKIAssets will create and write to disk all PKI assets necessary to establish the control plane.
|
||||
// It generates a self-signed CA certificate and a server certificate (signed by the CA)
|
||||
func CreatePKIAssets(cfg *kubeadmapi.MasterConfiguration) error {
|
||||
pkiDir := cfg.CertificatesDir
|
||||
hostname, err := os.Hostname()
|
||||
caCert, caKey, err := pkiutil.NewCertificateAuthority()
|
||||
if err != nil {
|
||||
return fmt.Errorf("couldn't get the hostname: %v", err)
|
||||
return nil, nil, fmt.Errorf("failure while generating CA certificate and key: %v", err)
|
||||
}
|
||||
|
||||
_, svcSubnet, err := net.ParseCIDR(cfg.Networking.ServiceSubnet)
|
||||
return caCert, caKey, nil
|
||||
}
|
||||
|
||||
// NewAPIServerCertAndKey generate CA certificate for apiserver, signed by the given CA.
|
||||
func NewAPIServerCertAndKey(cfg *kubeadmapi.MasterConfiguration, caCert *x509.Certificate, caKey *rsa.PrivateKey) (*x509.Certificate, *rsa.PrivateKey, error) {
|
||||
|
||||
altNames, err := getAltNames(cfg)
|
||||
if err != nil {
|
||||
return fmt.Errorf("error parsing CIDR %q: %v", cfg.Networking.ServiceSubnet, err)
|
||||
return nil, nil, fmt.Errorf("failure while composing altnames for API server: %v", err)
|
||||
}
|
||||
|
||||
// Build the list of SANs
|
||||
altNames := getAltNames(cfg.APIServerCertSANs, hostname, cfg.Networking.DNSDomain, svcSubnet)
|
||||
// Append the address the API Server is advertising
|
||||
altNames.IPs = append(altNames.IPs, net.ParseIP(cfg.API.AdvertiseAddress))
|
||||
|
||||
var caCert *x509.Certificate
|
||||
var caKey *rsa.PrivateKey
|
||||
// If at least one of them exists, we should try to load them
|
||||
// In the case that only one exists, there will most likely be an error anyway
|
||||
if pkiutil.CertOrKeyExist(pkiDir, kubeadmconstants.CACertAndKeyBaseName) {
|
||||
// Try to load ca.crt and ca.key from the PKI directory
|
||||
caCert, caKey, err = pkiutil.TryLoadCertAndKeyFromDisk(pkiDir, kubeadmconstants.CACertAndKeyBaseName)
|
||||
if err != nil || caCert == nil || caKey == nil {
|
||||
return fmt.Errorf("certificate and/or key existed but they could not be loaded properly")
|
||||
}
|
||||
|
||||
// The certificate and key could be loaded, but the certificate is not a CA
|
||||
if !caCert.IsCA {
|
||||
return fmt.Errorf("certificate and key could be loaded but the certificate is not a CA")
|
||||
}
|
||||
|
||||
fmt.Println("[certificates] Using the existing CA certificate and key.")
|
||||
} else {
|
||||
// The certificate and the key did NOT exist, let's generate them now
|
||||
caCert, caKey, err = pkiutil.NewCertificateAuthority()
|
||||
if err != nil {
|
||||
return fmt.Errorf("failure while generating CA certificate and key [%v]", err)
|
||||
}
|
||||
|
||||
if err = pkiutil.WriteCertAndKey(pkiDir, kubeadmconstants.CACertAndKeyBaseName, caCert, caKey); err != nil {
|
||||
return fmt.Errorf("failure while saving CA certificate and key [%v]", err)
|
||||
}
|
||||
fmt.Println("[certificates] Generated CA certificate and key.")
|
||||
}
|
||||
|
||||
// If at least one of them exists, we should try to load them
|
||||
// In the case that only one exists, there will most likely be an error anyway
|
||||
if pkiutil.CertOrKeyExist(pkiDir, kubeadmconstants.APIServerCertAndKeyBaseName) {
|
||||
// Try to load apiserver.crt and apiserver.key from the PKI directory
|
||||
apiCert, apiKey, err := pkiutil.TryLoadCertAndKeyFromDisk(pkiDir, kubeadmconstants.APIServerCertAndKeyBaseName)
|
||||
if err != nil || apiCert == nil || apiKey == nil {
|
||||
return fmt.Errorf("certificate and/or key existed but they could not be loaded properly")
|
||||
}
|
||||
|
||||
fmt.Println("[certificates] Using the existing API Server certificate and key.")
|
||||
} else {
|
||||
// The certificate and the key did NOT exist, let's generate them now
|
||||
// TODO: Add a test case to verify that this cert has the x509.ExtKeyUsageServerAuth flag
|
||||
config := certutil.Config{
|
||||
CommonName: "kube-apiserver",
|
||||
AltNames: altNames,
|
||||
CommonName: kubeadmconstants.APIServerCertCommonName,
|
||||
AltNames: *altNames,
|
||||
Usages: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
|
||||
}
|
||||
apiCert, apiKey, err := pkiutil.NewCertAndKey(caCert, caKey, config)
|
||||
if err != nil {
|
||||
return fmt.Errorf("failure while creating API server key and certificate [%v]", err)
|
||||
return nil, nil, fmt.Errorf("failure while creating API server key and certificate: %v", err)
|
||||
}
|
||||
|
||||
if err = pkiutil.WriteCertAndKey(pkiDir, kubeadmconstants.APIServerCertAndKeyBaseName, apiCert, apiKey); err != nil {
|
||||
return fmt.Errorf("failure while saving API server certificate and key [%v]", err)
|
||||
}
|
||||
fmt.Println("[certificates] Generated API server certificate and key.")
|
||||
fmt.Printf("[certificates] API Server serving cert is signed for DNS names %v and IPs %v\n", altNames.DNSNames, altNames.IPs)
|
||||
}
|
||||
return apiCert, apiKey, nil
|
||||
}
|
||||
|
||||
// If at least one of them exists, we should try to load them
|
||||
// In the case that only one exists, there will most likely be an error anyway
|
||||
if pkiutil.CertOrKeyExist(pkiDir, kubeadmconstants.APIServerKubeletClientCertAndKeyBaseName) {
|
||||
// Try to load apiserver-kubelet-client.crt and apiserver-kubelet-client.key from the PKI directory
|
||||
apiCert, apiKey, err := pkiutil.TryLoadCertAndKeyFromDisk(pkiDir, kubeadmconstants.APIServerKubeletClientCertAndKeyBaseName)
|
||||
if err != nil || apiCert == nil || apiKey == nil {
|
||||
return fmt.Errorf("certificate and/or key existed but they could not be loaded properly")
|
||||
}
|
||||
// NewAPIServerKubeletClientCertAndKey generate CA certificate for the apiservers to connect to the kubelets securely, signed by the given CA.
|
||||
func NewAPIServerKubeletClientCertAndKey(caCert *x509.Certificate, caKey *rsa.PrivateKey) (*x509.Certificate, *rsa.PrivateKey, error) {
|
||||
|
||||
fmt.Println("[certificates] Using the existing API Server kubelet client certificate and key.")
|
||||
} else {
|
||||
// The certificate and the key did NOT exist, let's generate them now
|
||||
// TODO: Add a test case to verify that this cert has the x509.ExtKeyUsageClientAuth flag
|
||||
config := certutil.Config{
|
||||
CommonName: "kube-apiserver-kubelet-client",
|
||||
CommonName: kubeadmconstants.APIServerKubeletClientCertCommonName,
|
||||
Organization: []string{kubeadmconstants.MastersGroup},
|
||||
Usages: []x509.ExtKeyUsage{x509.ExtKeyUsageClientAuth},
|
||||
}
|
||||
apiClientCert, apiClientKey, err := pkiutil.NewCertAndKey(caCert, caKey, config)
|
||||
if err != nil {
|
||||
return fmt.Errorf("failure while creating API server kubelet client key and certificate [%v]", err)
|
||||
return nil, nil, fmt.Errorf("failure while creating API server kubelet client key and certificate: %v", err)
|
||||
}
|
||||
|
||||
if err = pkiutil.WriteCertAndKey(pkiDir, kubeadmconstants.APIServerKubeletClientCertAndKeyBaseName, apiClientCert, apiClientKey); err != nil {
|
||||
return fmt.Errorf("failure while saving API server kubelet client certificate and key [%v]", err)
|
||||
}
|
||||
fmt.Println("[certificates] Generated API server kubelet client certificate and key.")
|
||||
}
|
||||
return apiClientCert, apiClientKey, nil
|
||||
}
|
||||
|
||||
// If the key exists, we should try to load it
|
||||
if pkiutil.CertOrKeyExist(pkiDir, kubeadmconstants.ServiceAccountKeyBaseName) {
|
||||
// Try to load sa.key from the PKI directory
|
||||
_, err := pkiutil.TryLoadKeyFromDisk(pkiDir, kubeadmconstants.ServiceAccountKeyBaseName)
|
||||
if err != nil {
|
||||
return fmt.Errorf("certificate and/or key existed but they could not be loaded properly [%v]", err)
|
||||
}
|
||||
// NewServiceAccountSigningKey generate public/private key pairs for signing service account tokens.
|
||||
func NewServiceAccountSigningKey() (*rsa.PrivateKey, error) {
|
||||
|
||||
fmt.Println("[certificates] Using the existing service account token signing key.")
|
||||
} else {
|
||||
// The key does NOT exist, let's generate it now
|
||||
saTokenSigningKey, err := certutil.NewPrivateKey()
|
||||
saSigningKey, err := certutil.NewPrivateKey()
|
||||
if err != nil {
|
||||
return fmt.Errorf("failure while creating service account token signing key [%v]", err)
|
||||
return nil, fmt.Errorf("failure while creating service account token signing key: %v", err)
|
||||
}
|
||||
|
||||
if err = pkiutil.WriteKey(pkiDir, kubeadmconstants.ServiceAccountKeyBaseName, saTokenSigningKey); err != nil {
|
||||
return fmt.Errorf("failure while saving service account token signing key [%v]", err)
|
||||
}
|
||||
return saSigningKey, nil
|
||||
}
|
||||
|
||||
if err = pkiutil.WritePublicKey(pkiDir, kubeadmconstants.ServiceAccountKeyBaseName, &saTokenSigningKey.PublicKey); err != nil {
|
||||
return fmt.Errorf("failure while saving service account token signing public key [%v]", err)
|
||||
}
|
||||
fmt.Println("[certificates] Generated service account token signing key and public key.")
|
||||
}
|
||||
// NewFrontProxyCACertAndKey generate a self signed front proxy CA.
|
||||
// Front proxy CA and client certs are used to secure a front proxy authenticator which is used to assert identity
|
||||
// without the client cert.
|
||||
// This is a separte CA, so that front proxy identities cannot hit the API and normal client certs cannot be used
|
||||
// as front proxies.
|
||||
func NewFrontProxyCACertAndKey() (*x509.Certificate, *rsa.PrivateKey, error) {
|
||||
|
||||
// front proxy CA and client certs are used to secure a front proxy authenticator which is used to assert identity
|
||||
// without the client cert, you cannot make use of the front proxy and the kube-aggregator uses this connection
|
||||
// so we generate and enable it unconditionally
|
||||
// This is a separte CA, so that front proxy identities cannot hit the API and normal client certs cannot be used
|
||||
// as front proxies.
|
||||
var frontProxyCACert *x509.Certificate
|
||||
var frontProxyCAKey *rsa.PrivateKey
|
||||
// If at least one of them exists, we should try to load them
|
||||
// In the case that only one exists, there will most likely be an error anyway
|
||||
if pkiutil.CertOrKeyExist(pkiDir, kubeadmconstants.FrontProxyCACertAndKeyBaseName) {
|
||||
// Try to load front-proxy-ca.crt and front-proxy-ca.key from the PKI directory
|
||||
frontProxyCACert, frontProxyCAKey, err = pkiutil.TryLoadCertAndKeyFromDisk(pkiDir, kubeadmconstants.FrontProxyCACertAndKeyBaseName)
|
||||
if err != nil || frontProxyCACert == nil || frontProxyCAKey == nil {
|
||||
return fmt.Errorf("certificate and/or key existed but they could not be loaded properly")
|
||||
}
|
||||
|
||||
// The certificate and key could be loaded, but the certificate is not a CA
|
||||
if !frontProxyCACert.IsCA {
|
||||
return fmt.Errorf("certificate and key could be loaded but the certificate is not a CA")
|
||||
}
|
||||
|
||||
fmt.Println("[certificates] Using the existing front-proxy CA certificate and key.")
|
||||
} else {
|
||||
// The certificate and the key did NOT exist, let's generate them now
|
||||
frontProxyCACert, frontProxyCAKey, err = pkiutil.NewCertificateAuthority()
|
||||
frontProxyCACert, frontProxyCAKey, err := pkiutil.NewCertificateAuthority()
|
||||
if err != nil {
|
||||
return fmt.Errorf("failure while generating front-proxy CA certificate and key [%v]", err)
|
||||
return nil, nil, fmt.Errorf("failure while generating front-proxy CA certificate and key: %v", err)
|
||||
}
|
||||
|
||||
if err = pkiutil.WriteCertAndKey(pkiDir, kubeadmconstants.FrontProxyCACertAndKeyBaseName, frontProxyCACert, frontProxyCAKey); err != nil {
|
||||
return fmt.Errorf("failure while saving front-proxy CA certificate and key [%v]", err)
|
||||
}
|
||||
fmt.Println("[certificates] Generated front-proxy CA certificate and key.")
|
||||
}
|
||||
return frontProxyCACert, frontProxyCAKey, nil
|
||||
}
|
||||
|
||||
// At this point we have a front proxy CA signing key. We can use that create the front proxy client cert if
|
||||
// it doesn't already exist.
|
||||
// If at least one of them exists, we should try to load them
|
||||
// In the case that only one exists, there will most likely be an error anyway
|
||||
if pkiutil.CertOrKeyExist(pkiDir, kubeadmconstants.FrontProxyClientCertAndKeyBaseName) {
|
||||
// Try to load apiserver-kubelet-client.crt and apiserver-kubelet-client.key from the PKI directory
|
||||
apiCert, apiKey, err := pkiutil.TryLoadCertAndKeyFromDisk(pkiDir, kubeadmconstants.FrontProxyClientCertAndKeyBaseName)
|
||||
if err != nil || apiCert == nil || apiKey == nil {
|
||||
return fmt.Errorf("certificate and/or key existed but they could not be loaded properly")
|
||||
}
|
||||
// NewFrontProxyClientCertAndKey generate CA certificate for proxy server client, signed by the given front proxy CA.
|
||||
func NewFrontProxyClientCertAndKey(frontProxyCACert *x509.Certificate, frontProxyCAKey *rsa.PrivateKey) (*x509.Certificate, *rsa.PrivateKey, error) {
|
||||
|
||||
fmt.Println("[certificates] Using the existing front-proxy client certificate and key.")
|
||||
} else {
|
||||
// The certificate and the key did NOT exist, let's generate them now
|
||||
// TODO: Add a test case to verify that this cert has the x509.ExtKeyUsageClientAuth flag
|
||||
config := certutil.Config{
|
||||
CommonName: "front-proxy-client",
|
||||
CommonName: kubeadmconstants.FrontProxyClientCertCommonName,
|
||||
Usages: []x509.ExtKeyUsage{x509.ExtKeyUsageClientAuth},
|
||||
}
|
||||
apiClientCert, apiClientKey, err := pkiutil.NewCertAndKey(frontProxyCACert, frontProxyCAKey, config)
|
||||
frontProxyClientCert, frontProxyClientKey, err := pkiutil.NewCertAndKey(frontProxyCACert, frontProxyCAKey, config)
|
||||
if err != nil {
|
||||
return fmt.Errorf("failure while creating front-proxy client key and certificate [%v]", err)
|
||||
return nil, nil, fmt.Errorf("failure while creating front-proxy client key and certificate: %v", err)
|
||||
}
|
||||
|
||||
if err = pkiutil.WriteCertAndKey(pkiDir, kubeadmconstants.FrontProxyClientCertAndKeyBaseName, apiClientCert, apiClientKey); err != nil {
|
||||
return fmt.Errorf("failure while saving front-proxy client certificate and key [%v]", err)
|
||||
}
|
||||
fmt.Println("[certificates] Generated front-proxy client certificate and key.")
|
||||
}
|
||||
|
||||
fmt.Printf("[certificates] Valid certificates and keys now exist in %q\n", pkiDir)
|
||||
|
||||
return nil
|
||||
return frontProxyClientCert, frontProxyClientKey, nil
|
||||
}
|
||||
|
||||
// checkAltNamesExist verifies that the cert is valid for all IPs and DNS names it should be valid for
|
||||
func checkAltNamesExist(IPs []net.IP, DNSNames []string, altNames certutil.AltNames) bool {
|
||||
dnsset := setutil.NewString(DNSNames...)
|
||||
// getAltNames builds an AltNames object for to be used when generating apiserver certificate
|
||||
func getAltNames(cfg *kubeadmapi.MasterConfiguration) (*certutil.AltNames, error) {
|
||||
|
||||
for _, dnsNameThatShouldExist := range altNames.DNSNames {
|
||||
if !dnsset.Has(dnsNameThatShouldExist) {
|
||||
return false
|
||||
}
|
||||
// host name
|
||||
hostname, err := os.Hostname()
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("couldn't get the hostname: %v", err)
|
||||
}
|
||||
|
||||
for _, ipThatShouldExist := range altNames.IPs {
|
||||
found := false
|
||||
for _, ip := range IPs {
|
||||
if ip.Equal(ipThatShouldExist) {
|
||||
found = true
|
||||
break
|
||||
}
|
||||
// advertise address
|
||||
advertiseAddress := net.ParseIP(cfg.API.AdvertiseAddress)
|
||||
if advertiseAddress == nil {
|
||||
return nil, fmt.Errorf("error parsing API AdvertiseAddress %v: is not a valid textual representation of an IP address", cfg.API.AdvertiseAddress)
|
||||
}
|
||||
|
||||
if !found {
|
||||
return false
|
||||
// internal IP address for the API server
|
||||
_, svcSubnet, err := net.ParseCIDR(cfg.Networking.ServiceSubnet)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("error parsing CIDR %q: %v", cfg.Networking.ServiceSubnet, err)
|
||||
}
|
||||
}
|
||||
return true
|
||||
}
|
||||
|
||||
// getAltNames builds an AltNames object for the certutil to use when generating the certificates
|
||||
func getAltNames(cfgAltNames []string, hostname, dnsdomain string, svcSubnet *net.IPNet) certutil.AltNames {
|
||||
altNames := certutil.AltNames{
|
||||
internalAPIServerVirtualIP, err := ipallocator.GetIndexedIP(svcSubnet, 1)
|
||||
if err != nil {
|
||||
return nil, fmt.Errorf("unable to get first IP address from the given CIDR (%s): %v", svcSubnet.String(), err)
|
||||
}
|
||||
|
||||
// create AltNames with defaults DNSNames/IPs
|
||||
altNames := &certutil.AltNames{
|
||||
DNSNames: []string{
|
||||
hostname,
|
||||
"kubernetes",
|
||||
"kubernetes.default",
|
||||
"kubernetes.default.svc",
|
||||
fmt.Sprintf("kubernetes.default.svc.%s", dnsdomain),
|
||||
fmt.Sprintf("kubernetes.default.svc.%s", cfg.Networking.DNSDomain),
|
||||
},
|
||||
IPs: []net.IP{
|
||||
internalAPIServerVirtualIP,
|
||||
advertiseAddress,
|
||||
},
|
||||
}
|
||||
|
||||
// Populate IPs/DNSNames from AltNames
|
||||
for _, altname := range cfgAltNames {
|
||||
// adds additional SAN
|
||||
for _, altname := range cfg.APIServerCertSANs {
|
||||
if ip := net.ParseIP(altname); ip != nil {
|
||||
altNames.IPs = append(altNames.IPs, ip)
|
||||
} else if len(validation.IsDNS1123Subdomain(altname)) == 0 {
|
||||
|
|
@ -290,11 +171,5 @@ func getAltNames(cfgAltNames []string, hostname, dnsdomain string, svcSubnet *ne
|
|||
}
|
||||
}
|
||||
|
||||
// and lastly, extract the internal IP address for the API server
|
||||
internalAPIServerVirtualIP, err := ipallocator.GetIndexedIP(svcSubnet, 1)
|
||||
if err != nil {
|
||||
fmt.Printf("[certs] WARNING: Unable to get first IP address from the given CIDR (%s): %v\n", svcSubnet.String(), err)
|
||||
}
|
||||
altNames.IPs = append(altNames.IPs, internalAPIServerVirtualIP)
|
||||
return altNames
|
||||
return altNames, nil
|
||||
}
|
||||
|
|
|
|||
|
|
@ -17,158 +17,151 @@ limitations under the License.
|
|||
package certs
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"io/ioutil"
|
||||
"crypto/x509"
|
||||
"net"
|
||||
"os"
|
||||
"testing"
|
||||
|
||||
certutil "k8s.io/client-go/util/cert"
|
||||
kubeadmapi "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm"
|
||||
"k8s.io/kubernetes/cmd/kubeadm/app/constants"
|
||||
)
|
||||
|
||||
func TestCreatePKIAssets(t *testing.T) {
|
||||
tmpdir, err := ioutil.TempDir("", "")
|
||||
func TestNewCACertAndKey(t *testing.T) {
|
||||
caCert, _, err := NewCACertAndKey()
|
||||
if err != nil {
|
||||
t.Fatalf("Couldn't create tmpdir")
|
||||
t.Fatalf("failed call NewCACertAndKey: %v", err)
|
||||
}
|
||||
defer os.RemoveAll(tmpdir)
|
||||
|
||||
var tests = []struct {
|
||||
cfg *kubeadmapi.MasterConfiguration
|
||||
expected bool
|
||||
}{
|
||||
{
|
||||
cfg: &kubeadmapi.MasterConfiguration{},
|
||||
expected: false,
|
||||
},
|
||||
{
|
||||
// CIDR too small
|
||||
cfg: &kubeadmapi.MasterConfiguration{
|
||||
API: kubeadmapi.API{AdvertiseAddress: "1.2.3.4"},
|
||||
Networking: kubeadmapi.Networking{ServiceSubnet: "10.0.0.1/1"},
|
||||
CertificatesDir: fmt.Sprintf("%s/etc/kubernetes/pki", tmpdir),
|
||||
},
|
||||
expected: false,
|
||||
},
|
||||
{
|
||||
// CIDR invalid
|
||||
cfg: &kubeadmapi.MasterConfiguration{
|
||||
API: kubeadmapi.API{AdvertiseAddress: "1.2.3.4"},
|
||||
Networking: kubeadmapi.Networking{ServiceSubnet: "invalid"},
|
||||
CertificatesDir: fmt.Sprintf("%s/etc/kubernetes/pki", tmpdir),
|
||||
},
|
||||
expected: false,
|
||||
},
|
||||
{
|
||||
cfg: &kubeadmapi.MasterConfiguration{
|
||||
API: kubeadmapi.API{AdvertiseAddress: "1.2.3.4"},
|
||||
Networking: kubeadmapi.Networking{ServiceSubnet: "10.0.0.1/24"},
|
||||
CertificatesDir: fmt.Sprintf("%s/etc/kubernetes/pki", tmpdir),
|
||||
},
|
||||
expected: true,
|
||||
},
|
||||
assertIsCa(t, caCert)
|
||||
}
|
||||
|
||||
func TestNewAPIServerCertAndKey(t *testing.T) {
|
||||
hostname, err := os.Hostname()
|
||||
if err != nil {
|
||||
t.Errorf("couldn't get the hostname: %v", err)
|
||||
}
|
||||
for _, rt := range tests {
|
||||
actual := CreatePKIAssets(rt.cfg)
|
||||
if (actual == nil) != rt.expected {
|
||||
t.Errorf(
|
||||
"failed CreatePKIAssets with an error:\n\texpected: %t\n\t actual: %t",
|
||||
rt.expected,
|
||||
(actual == nil),
|
||||
)
|
||||
advertiseIP := "1.2.3.4"
|
||||
cfg := &kubeadmapi.MasterConfiguration{
|
||||
API: kubeadmapi.API{AdvertiseAddress: advertiseIP},
|
||||
Networking: kubeadmapi.Networking{ServiceSubnet: "10.96.0.0/12", DNSDomain: "cluster.local"},
|
||||
}
|
||||
caCert, caKey, err := NewCACertAndKey()
|
||||
|
||||
apiServerCert, _, err := NewAPIServerCertAndKey(cfg, caCert, caKey)
|
||||
if err != nil {
|
||||
t.Fatalf("failed creation of cert and key: %v", err)
|
||||
}
|
||||
|
||||
assertIsSignedByCa(t, apiServerCert, caCert)
|
||||
assertHasServerAuth(t, apiServerCert)
|
||||
|
||||
for _, DNSName := range []string{hostname, "kubernetes", "kubernetes.default", "kubernetes.default.svc", "kubernetes.default.svc.cluster.local"} {
|
||||
assertHasDNSNames(t, apiServerCert, DNSName)
|
||||
}
|
||||
for _, IPAddress := range []string{"10.96.0.1", advertiseIP} {
|
||||
assertHasIPAddresses(t, apiServerCert, net.ParseIP(IPAddress))
|
||||
}
|
||||
}
|
||||
|
||||
func TestCheckAltNamesExist(t *testing.T) {
|
||||
var tests = []struct {
|
||||
IPs []net.IP
|
||||
DNSNames []string
|
||||
requiredAltNames certutil.AltNames
|
||||
succeed bool
|
||||
}{
|
||||
{
|
||||
// equal
|
||||
requiredAltNames: certutil.AltNames{IPs: []net.IP{net.ParseIP("1.1.1.1"), net.ParseIP("192.168.1.2")}, DNSNames: []string{"foo", "bar", "baz"}},
|
||||
IPs: []net.IP{net.ParseIP("1.1.1.1"), net.ParseIP("192.168.1.2")},
|
||||
DNSNames: []string{"foo", "bar", "baz"},
|
||||
succeed: true,
|
||||
},
|
||||
{
|
||||
// the loaded cert has more ips than required, ok
|
||||
requiredAltNames: certutil.AltNames{IPs: []net.IP{net.ParseIP("1.1.1.1"), net.ParseIP("192.168.1.2")}, DNSNames: []string{"foo", "bar", "baz"}},
|
||||
IPs: []net.IP{net.ParseIP("192.168.2.5"), net.ParseIP("1.1.1.1"), net.ParseIP("192.168.1.2")},
|
||||
DNSNames: []string{"a", "foo", "b", "bar", "baz"},
|
||||
succeed: true,
|
||||
},
|
||||
{
|
||||
// the loaded cert doesn't have all ips
|
||||
requiredAltNames: certutil.AltNames{IPs: []net.IP{net.ParseIP("1.1.1.1"), net.ParseIP("192.168.2.5"), net.ParseIP("192.168.1.2")}, DNSNames: []string{"foo", "bar", "baz"}},
|
||||
IPs: []net.IP{net.ParseIP("1.1.1.1"), net.ParseIP("192.168.1.2")},
|
||||
DNSNames: []string{"foo", "bar", "baz"},
|
||||
succeed: false,
|
||||
},
|
||||
{
|
||||
// the loaded cert doesn't have all ips
|
||||
requiredAltNames: certutil.AltNames{IPs: []net.IP{net.ParseIP("1.1.1.1"), net.ParseIP("192.168.1.2")}, DNSNames: []string{"foo", "bar", "b", "baz"}},
|
||||
IPs: []net.IP{net.ParseIP("1.1.1.1"), net.ParseIP("192.168.1.2")},
|
||||
DNSNames: []string{"foo", "bar", "baz"},
|
||||
succeed: false,
|
||||
},
|
||||
func TestNewAPIServerKubeletClientCertAndKey(t *testing.T) {
|
||||
caCert, caKey, err := NewCACertAndKey()
|
||||
|
||||
apiClientCert, _, err := NewAPIServerKubeletClientCertAndKey(caCert, caKey)
|
||||
if err != nil {
|
||||
t.Fatalf("failed creation of cert and key: %v", err)
|
||||
}
|
||||
|
||||
for _, rt := range tests {
|
||||
succeeded := checkAltNamesExist(rt.IPs, rt.DNSNames, rt.requiredAltNames)
|
||||
if succeeded != rt.succeed {
|
||||
t.Errorf(
|
||||
"failed checkAltNamesExist:\n\texpected: %t\n\t actual: %t",
|
||||
rt.succeed,
|
||||
succeeded,
|
||||
)
|
||||
assertIsSignedByCa(t, apiClientCert, caCert)
|
||||
assertHasClientAuth(t, apiClientCert)
|
||||
assertHasOrganization(t, apiClientCert, constants.MastersGroup)
|
||||
}
|
||||
|
||||
func TestNewNewServiceAccountSigningKey(t *testing.T) {
|
||||
|
||||
key, err := NewServiceAccountSigningKey()
|
||||
if err != nil {
|
||||
t.Fatalf("failed creation of key: %v", err)
|
||||
}
|
||||
|
||||
if key.N.BitLen() < 2048 {
|
||||
t.Error("Service account signing key has less than 2048 bits size")
|
||||
}
|
||||
}
|
||||
|
||||
func TestGetAltNames(t *testing.T) {
|
||||
var tests = []struct {
|
||||
cfgaltnames []string
|
||||
hostname string
|
||||
dnsdomain string
|
||||
servicecidr string
|
||||
expectedIPs []string
|
||||
expectedDNSNames []string
|
||||
}{
|
||||
{
|
||||
cfgaltnames: []string{"foo", "192.168.200.1", "bar.baz"},
|
||||
hostname: "my-node",
|
||||
dnsdomain: "cluster.external",
|
||||
servicecidr: "10.96.0.1/12",
|
||||
expectedIPs: []string{"192.168.200.1", "10.96.0.1"},
|
||||
expectedDNSNames: []string{"my-node", "kubernetes", "kubernetes.default", "kubernetes.default.svc", "kubernetes.default.svc.cluster.external", "foo", "bar.baz"},
|
||||
},
|
||||
func TestNewFrontProxyCACertAndKey(t *testing.T) {
|
||||
frontProxyCACert, _, err := NewFrontProxyCACertAndKey()
|
||||
if err != nil {
|
||||
t.Fatalf("failed creation of cert and key: %v", err)
|
||||
}
|
||||
|
||||
for _, rt := range tests {
|
||||
_, svcSubnet, _ := net.ParseCIDR(rt.servicecidr)
|
||||
actual := getAltNames(rt.cfgaltnames, rt.hostname, rt.dnsdomain, svcSubnet)
|
||||
for i := range actual.IPs {
|
||||
if rt.expectedIPs[i] != actual.IPs[i].String() {
|
||||
t.Errorf(
|
||||
"failed getAltNames:\n\texpected: %s\n\t actual: %s",
|
||||
rt.expectedIPs[i],
|
||||
actual.IPs[i].String(),
|
||||
)
|
||||
}
|
||||
}
|
||||
for i := range actual.DNSNames {
|
||||
if rt.expectedDNSNames[i] != actual.DNSNames[i] {
|
||||
t.Errorf(
|
||||
"failed getAltNames:\n\texpected: %s\n\t actual: %s",
|
||||
rt.expectedDNSNames[i],
|
||||
actual.DNSNames[i],
|
||||
)
|
||||
}
|
||||
assertIsCa(t, frontProxyCACert)
|
||||
}
|
||||
|
||||
func TestNewFrontProxyClientCertAndKey(t *testing.T) {
|
||||
frontProxyCACert, frontProxyCAKey, err := NewFrontProxyCACertAndKey()
|
||||
|
||||
frontProxyClientCert, _, err := NewFrontProxyClientCertAndKey(frontProxyCACert, frontProxyCAKey)
|
||||
if err != nil {
|
||||
t.Fatalf("failed creation of cert and key: %v", err)
|
||||
}
|
||||
|
||||
assertIsSignedByCa(t, frontProxyClientCert, frontProxyCACert)
|
||||
assertHasClientAuth(t, frontProxyClientCert)
|
||||
}
|
||||
|
||||
func assertIsCa(t *testing.T, cert *x509.Certificate) {
|
||||
if !cert.IsCA {
|
||||
t.Error("cert is not a valida CA")
|
||||
}
|
||||
}
|
||||
|
||||
func assertIsSignedByCa(t *testing.T, cert *x509.Certificate, ca *x509.Certificate) {
|
||||
if err := cert.CheckSignatureFrom(ca); err != nil {
|
||||
t.Error("cert is not signed by ca")
|
||||
}
|
||||
}
|
||||
|
||||
func assertHasClientAuth(t *testing.T, cert *x509.Certificate) {
|
||||
for i := range cert.ExtKeyUsage {
|
||||
if cert.ExtKeyUsage[i] == x509.ExtKeyUsageClientAuth {
|
||||
return
|
||||
}
|
||||
}
|
||||
t.Error("cert is not a ClientAuth")
|
||||
}
|
||||
|
||||
func assertHasServerAuth(t *testing.T, cert *x509.Certificate) {
|
||||
for i := range cert.ExtKeyUsage {
|
||||
if cert.ExtKeyUsage[i] == x509.ExtKeyUsageServerAuth {
|
||||
return
|
||||
}
|
||||
}
|
||||
t.Error("cert is not a ServerAuth")
|
||||
}
|
||||
|
||||
func assertHasOrganization(t *testing.T, cert *x509.Certificate, OU string) {
|
||||
for i := range cert.Subject.Organization {
|
||||
if cert.Subject.Organization[i] == OU {
|
||||
return
|
||||
}
|
||||
}
|
||||
t.Errorf("cert does not contain OU %s", OU)
|
||||
}
|
||||
|
||||
func assertHasDNSNames(t *testing.T, cert *x509.Certificate, DNSName string) {
|
||||
for i := range cert.DNSNames {
|
||||
if cert.DNSNames[i] == DNSName {
|
||||
return
|
||||
}
|
||||
}
|
||||
t.Errorf("cert does not contain DNSName %s", DNSName)
|
||||
}
|
||||
|
||||
func assertHasIPAddresses(t *testing.T, cert *x509.Certificate, IPAddress net.IP) {
|
||||
for i := range cert.IPAddresses {
|
||||
if cert.IPAddresses[i].Equal(IPAddress) {
|
||||
return
|
||||
}
|
||||
}
|
||||
t.Errorf("cert does not contain IPAddress %s", IPAddress)
|
||||
}
|
||||
|
|
|
|||
|
|
@ -61,6 +61,16 @@ func NewCertAndKey(caCert *x509.Certificate, caKey *rsa.PrivateKey, config certu
|
|||
return cert, key, nil
|
||||
}
|
||||
|
||||
// HasServerAuth returns true if the given certificate is a ServerAuth
|
||||
func HasServerAuth(cert *x509.Certificate) bool {
|
||||
for i := range cert.ExtKeyUsage {
|
||||
if cert.ExtKeyUsage[i] == x509.ExtKeyUsageServerAuth {
|
||||
return true
|
||||
}
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
||||
func WriteCertAndKey(pkiPath string, name string, cert *x509.Certificate, key *rsa.PrivateKey) error {
|
||||
if err := WriteKey(pkiPath, name, key); err != nil {
|
||||
return err
|
||||
|
|
|
|||
|
|
@ -87,6 +87,45 @@ func TestNewCertAndKey(t *testing.T) {
|
|||
}
|
||||
}
|
||||
|
||||
func TestHasServerAuth(t *testing.T) {
|
||||
caCert, caKey, _ := NewCertificateAuthority()
|
||||
|
||||
var tests = []struct {
|
||||
config certutil.Config
|
||||
expected bool
|
||||
}{
|
||||
{
|
||||
config: certutil.Config{
|
||||
CommonName: "test",
|
||||
Usages: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
|
||||
},
|
||||
expected: true,
|
||||
},
|
||||
{
|
||||
config: certutil.Config{
|
||||
CommonName: "test",
|
||||
Usages: []x509.ExtKeyUsage{x509.ExtKeyUsageClientAuth},
|
||||
},
|
||||
expected: false,
|
||||
},
|
||||
}
|
||||
|
||||
for _, rt := range tests {
|
||||
cert, _, err := NewCertAndKey(caCert, caKey, rt.config)
|
||||
if err != nil {
|
||||
t.Fatalf("Couldn't create cert: %v", err)
|
||||
}
|
||||
actual := HasServerAuth(cert)
|
||||
if actual != rt.expected {
|
||||
t.Errorf(
|
||||
"failed HasServerAuth:\n\texpected: %t\n\t actual: %t",
|
||||
rt.expected,
|
||||
actual,
|
||||
)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func TestWriteCertAndKey(t *testing.T) {
|
||||
tmpdir, err := ioutil.TempDir("", "")
|
||||
if err != nil {
|
||||
|
|
|
|||
|
|
@ -52,6 +52,7 @@ filegroup(
|
|||
name = "all-srcs",
|
||||
srcs = [
|
||||
":package-srcs",
|
||||
"//cmd/kubeadm/app/util/config:all-srcs",
|
||||
"//cmd/kubeadm/app/util/kubeconfig:all-srcs",
|
||||
"//cmd/kubeadm/app/util/token:all-srcs",
|
||||
],
|
||||
|
|
|
|||
|
|
@ -0,0 +1,45 @@
|
|||
package(default_visibility = ["//visibility:public"])
|
||||
|
||||
licenses(["notice"])
|
||||
|
||||
load(
|
||||
"@io_bazel_rules_go//go:def.bzl",
|
||||
"go_library",
|
||||
"go_test",
|
||||
)
|
||||
|
||||
go_library(
|
||||
name = "go_default_library",
|
||||
srcs = ["masterconfig.go"],
|
||||
tags = ["automanaged"],
|
||||
deps = [
|
||||
"//cmd/kubeadm/app/apis/kubeadm:go_default_library",
|
||||
"//cmd/kubeadm/app/constants:go_default_library",
|
||||
"//cmd/kubeadm/app/util:go_default_library",
|
||||
"//cmd/kubeadm/app/util/token:go_default_library",
|
||||
"//pkg/api:go_default_library",
|
||||
"//pkg/util/version:go_default_library",
|
||||
"//vendor/k8s.io/apimachinery/pkg/runtime:go_default_library",
|
||||
"//vendor/k8s.io/apimachinery/pkg/util/net:go_default_library",
|
||||
],
|
||||
)
|
||||
|
||||
go_test(
|
||||
name = "go_default_test",
|
||||
srcs = ["masterconfig_test.go"],
|
||||
library = ":go_default_library",
|
||||
tags = ["automanaged"],
|
||||
)
|
||||
|
||||
filegroup(
|
||||
name = "package-srcs",
|
||||
srcs = glob(["**"]),
|
||||
tags = ["automanaged"],
|
||||
visibility = ["//visibility:private"],
|
||||
)
|
||||
|
||||
filegroup(
|
||||
name = "all-srcs",
|
||||
srcs = [":package-srcs"],
|
||||
tags = ["automanaged"],
|
||||
)
|
||||
|
|
@ -18,17 +18,20 @@ package cmd
|
|||
|
||||
import (
|
||||
"fmt"
|
||||
"io/ioutil"
|
||||
"net"
|
||||
|
||||
"k8s.io/apimachinery/pkg/runtime"
|
||||
netutil "k8s.io/apimachinery/pkg/util/net"
|
||||
kubeadmapi "k8s.io/kubernetes/cmd/kubeadm/app/apis/kubeadm"
|
||||
kubeadmconstants "k8s.io/kubernetes/cmd/kubeadm/app/constants"
|
||||
kubeadmutil "k8s.io/kubernetes/cmd/kubeadm/app/util"
|
||||
tokenutil "k8s.io/kubernetes/cmd/kubeadm/app/util/token"
|
||||
"k8s.io/kubernetes/pkg/api"
|
||||
"k8s.io/kubernetes/pkg/util/version"
|
||||
)
|
||||
|
||||
func setInitDynamicDefaults(cfg *kubeadmapi.MasterConfiguration) error {
|
||||
func SetInitDynamicDefaults(cfg *kubeadmapi.MasterConfiguration) error {
|
||||
|
||||
// Choose the right address for the API Server to advertise. If the advertise address is localhost or 0.0.0.0, the default interface's IP address is used
|
||||
// This is the same logic as the API Server uses
|
||||
|
|
@ -54,15 +57,6 @@ func setInitDynamicDefaults(cfg *kubeadmapi.MasterConfiguration) error {
|
|||
return fmt.Errorf("this version of kubeadm only supports deploying clusters with the control plane version >= %s. Current version: %s", kubeadmconstants.MinimumControlPlaneVersion.String(), cfg.KubernetesVersion)
|
||||
}
|
||||
|
||||
fmt.Printf("[init] Using Kubernetes version: %s\n", cfg.KubernetesVersion)
|
||||
fmt.Printf("[init] Using Authorization modes: %v\n", cfg.AuthorizationModes)
|
||||
|
||||
// Warn about the limitations with the current cloudprovider solution.
|
||||
if cfg.CloudProvider != "" {
|
||||
fmt.Println("[init] WARNING: For cloudprovider integrations to work --cloud-provider must be set for all kubelets in the cluster.")
|
||||
fmt.Println("\t(/etc/systemd/system/kubelet.service.d/10-kubeadm.conf should be edited for this purpose)")
|
||||
}
|
||||
|
||||
if cfg.Token == "" {
|
||||
var err error
|
||||
cfg.Token, err = tokenutil.GenerateToken()
|
||||
|
|
@ -73,3 +67,19 @@ func setInitDynamicDefaults(cfg *kubeadmapi.MasterConfiguration) error {
|
|||
|
||||
return nil
|
||||
}
|
||||
|
||||
// TryLoadMasterConfiguration tries to loads a Master configuration from the given file (if defined)
|
||||
func TryLoadMasterConfiguration(cfgPath string, cfg *kubeadmapi.MasterConfiguration) error {
|
||||
|
||||
if cfgPath != "" {
|
||||
b, err := ioutil.ReadFile(cfgPath)
|
||||
if err != nil {
|
||||
return fmt.Errorf("unable to read config from %q [%v]", cfgPath, err)
|
||||
}
|
||||
if err := runtime.DecodeInto(api.Codecs.UniversalDecoder(), b, cfg); err != nil {
|
||||
return fmt.Errorf("unable to decode config from %q [%v]", cfgPath, err)
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
Loading…
Reference in New Issue