mirror of https://github.com/k3s-io/k3s
86 lines
2.7 KiB
Go
86 lines
2.7 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 lifecycle
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import (
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"fmt"
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"net"
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"net/http"
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"time"
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"k8s.io/api/core/v1"
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"k8s.io/kubernetes/pkg/master/ports"
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"k8s.io/kubernetes/test/e2e/framework"
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"github.com/onsi/ginkgo"
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"github.com/onsi/gomega"
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)
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var _ = SIGDescribe("Ports Security Check [Feature:KubeletSecurity]", func() {
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f := framework.NewDefaultFramework("kubelet-security")
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var node *v1.Node
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var nodeName string
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ginkgo.BeforeEach(func() {
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nodes := framework.GetReadySchedulableNodesOrDie(f.ClientSet)
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gomega.Expect(len(nodes.Items)).NotTo(gomega.BeZero())
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node = &nodes.Items[0]
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nodeName = node.Name
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})
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// make sure kubelet readonly (10255) and cadvisor (4194) ports are disabled via API server proxy
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ginkgo.It(fmt.Sprintf("should not be able to proxy to the readonly kubelet port %v using proxy subresource", ports.KubeletReadOnlyPort), func() {
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result, err := framework.NodeProxyRequest(f.ClientSet, nodeName, "pods/", ports.KubeletReadOnlyPort)
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framework.ExpectNoError(err)
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var statusCode int
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result.StatusCode(&statusCode)
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gomega.Expect(statusCode).NotTo(gomega.Equal(http.StatusOK))
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})
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ginkgo.It("should not be able to proxy to cadvisor port 4194 using proxy subresource", func() {
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result, err := framework.NodeProxyRequest(f.ClientSet, nodeName, "containers/", 4194)
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framework.ExpectNoError(err)
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var statusCode int
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result.StatusCode(&statusCode)
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gomega.Expect(statusCode).NotTo(gomega.Equal(http.StatusOK))
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})
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// make sure kubelet readonly (10255) and cadvisor (4194) ports are closed on the public IP address
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disabledPorts := []int{ports.KubeletReadOnlyPort, 4194}
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for _, port := range disabledPorts {
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ginkgo.It(fmt.Sprintf("should not have port %d open on its all public IP addresses", port), func() {
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portClosedTest(f, node, port)
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})
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}
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})
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// checks whether the target port is closed
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func portClosedTest(f *framework.Framework, pickNode *v1.Node, port int) {
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nodeAddrs := framework.GetNodeAddresses(pickNode, v1.NodeExternalIP)
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gomega.Expect(len(nodeAddrs)).NotTo(gomega.BeZero())
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for _, addr := range nodeAddrs {
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conn, err := net.DialTimeout("tcp", fmt.Sprintf("%s:%d", addr, port), 1*time.Minute)
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if err == nil {
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conn.Close()
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framework.Failf("port %d is not disabled", port)
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}
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}
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}
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