mirror of https://github.com/k3s-io/k3s
131 lines
4.7 KiB
Go
131 lines
4.7 KiB
Go
/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package ipvs
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import (
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"testing"
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utilsexec "k8s.io/utils/exec"
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fakeexec "k8s.io/utils/exec/testing"
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)
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func TestRequiredIPVSKernelModulesAvailableCheck(t *testing.T) {
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cases := []struct {
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caseName string
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loadedKernel string
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kernelVersion string
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builtinKernel string
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expectErrors bool
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expectWarnings bool
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}{
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{
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caseName: "no installed kernel modules and no builtin kernel modules",
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loadedKernel: "",
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kernelVersion: "3.13.0-24-generic",
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builtinKernel: "",
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expectErrors: false,
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expectWarnings: true,
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},
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{
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caseName: "no installed kernel modules and missing builtin kernel modules",
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loadedKernel: "",
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kernelVersion: "3.13.0-24-generic",
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builtinKernel: "kernel/net/netfilter/ipvs/ip_vs.ko\n" +
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"kernel/net/ipv4/netfilter/nf_conntrack_ipv4.ko",
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expectErrors: false,
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expectWarnings: true,
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},
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{
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caseName: "no installed kernel modules and own all builtin kernel modules",
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loadedKernel: "",
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kernelVersion: "3.13.0-24-generic",
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builtinKernel: "kernel/net/netfilter/ipvs/ip_vs.ko\n" +
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"kernel/net/netfilter/ipvs/ip_vs_rr.ko\n" +
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"kernel/net/netfilter/ipvs/ip_vs_wrr.ko\n" +
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"kernel/net/netfilter/ipvs/ip_vs_sh.ko\n" +
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"kernel/net/ipv4/netfilter/nf_conntrack_ipv4.ko",
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expectErrors: false,
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expectWarnings: false,
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},
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{
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caseName: "missing installed kernel modules and no builtin kernel modules",
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loadedKernel: "ip_vs",
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kernelVersion: "3.13.0-24-generic",
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builtinKernel: "",
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expectErrors: false,
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expectWarnings: true,
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},
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{
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caseName: "own all installed kernel modules and no builtin kernel modules",
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loadedKernel: "ip_vs\n" + "ip_vs_wrr\n" + "nf_conntrack_ipv4\n" +
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"ip_vs_rr\n" + "ip_vs_sh",
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kernelVersion: "3.13.0-24-generic",
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builtinKernel: "",
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expectErrors: false,
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expectWarnings: false,
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},
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{
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caseName: "own all installed kernel modules and all builtin kernel modules",
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loadedKernel: "ip_vs\n" + "ip_vs_wrr\n" + "nf_conntrack_ipv4\n" + "ip_vs_rr\n" + "ip_vs_sh",
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kernelVersion: "3.13.0-24-generic",
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builtinKernel: "kernel/net/netfilter/ipvs/ip_vs.ko\n" +
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"kernel/net/netfilter/ipvs/ip_vs_rr.ko\n" +
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"kernel/net/netfilter/ipvs/ip_vs_wrr.ko\n" +
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"kernel/net/netfilter/ipvs/ip_vs_sh.ko\n" +
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"kernel/net/ipv4/netfilter/nf_conntrack_ipv4.ko",
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expectErrors: false,
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expectWarnings: false,
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},
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}
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for i, tc := range cases {
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fcmd := fakeexec.FakeCmd{
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CombinedOutputScript: []fakeexec.FakeCombinedOutputAction{
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func() ([]byte, error) { return []byte(cases[i].loadedKernel), nil },
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func() ([]byte, error) { return []byte(cases[i].kernelVersion), nil },
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func() ([]byte, error) { return []byte(cases[i].builtinKernel), nil },
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},
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}
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fexec := fakeexec.FakeExec{
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CommandScript: []fakeexec.FakeCommandAction{
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func(cmd string, args ...string) utilsexec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
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func(cmd string, args ...string) utilsexec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
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func(cmd string, args ...string) utilsexec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
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},
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}
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check := RequiredIPVSKernelModulesAvailableCheck{
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Executor: &fexec,
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}
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warnings, errors := check.Check()
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switch {
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case warnings != nil && !tc.expectWarnings:
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t.Errorf("RequiredIPVSKernelModulesAvailableCheck: unexpected warnings for installed kernel modules %v and builtin kernel modules %v. Warnings: %v", tc.loadedKernel, tc.builtinKernel, warnings)
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case warnings == nil && tc.expectWarnings:
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t.Errorf("RequiredIPVSKernelModulesAvailableCheck: expected warnings for installed kernel modules %v and builtin kernel modules %v but got nothing", tc.loadedKernel, tc.builtinKernel)
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case errors != nil && !tc.expectErrors:
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t.Errorf("RequiredIPVSKernelModulesAvailableCheck: unexpected errors for installed kernel modules %v and builtin kernel modules %v. errors: %v", tc.loadedKernel, tc.builtinKernel, errors)
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case errors == nil && tc.expectErrors:
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t.Errorf("RequiredIPVSKernelModulesAvailableCheck: expected errors for installed kernel modules %v and builtin kernel modules %v but got nothing", tc.loadedKernel, tc.builtinKernel)
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}
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}
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}
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