Cluster Setup - Verify Platform Binaries--验证平台的二进制文件

2021-03-15 17:47:09 浏览数 (1)

释意：

Verify platform binaries 验证平台的二进制文件

https://cloud.tencent.com/act?from=10680

https://cloud.tencent.com/act/season?from=14065

https://cloud.tencent.com/?from=10680

https://cloud.tencent.com/product/cns?from=10680

(照旧加几个腾讯云连接)

1. Hashes 哈希散列

详见知乎：https://zhuanlan.zhihu.com/p/37165658关于哈希算法与MD5、SHA讲的很是详细。还有csdn的https://blog.csdn.net/ljy1988123/article/details/51506578

1.1 Theory and Hashes-理论与哈希

哈希算法有两个评价标准，一个是无法回源，一个是随机性（碰撞概率小），一个是计算速度。常见的算法 Hash SHA MD5

1.2 Download and verify binaries 下载并验证二进制文件

1.2.1 确认版本

1.2.2 Dowload kubernetes release from github

1.2.3 verify downloaded files 验证下载文件

代码语言：txt复制
sha512sum   kubernetes-server-linux-amd64.tar.gz >compare

将github页面的sha512 hash 跟本地验证的对比 oK一致

1.3. Verify binaries from container验证容器中的二进制文件

1.3.1 解压 从github下载的1.9.3的kubernetes压缩包，以kube-apiserver为例，验证解压文件夹内的kuber-apiserver的 sha512sum.并将其写入compare文件

代码语言：txt复制
root@cks-master:~/hash# tar -zxf kubernetes-server-linux-amd64.tar.gz 
root@cks-master:~/hash# ls kubernetes
addons  kubernetes-src.tar.gz  LICENSES  server
root@cks-master:~/hash# ls kubernetes/server/bin/
apiextensions-apiserver  kube-aggregator  kube-apiserver.docker_tag  kube-controller-manager             kube-controller-manager.tar  kubelet     kube-proxy.docker_tag  kube-scheduler             kube-scheduler.tar
kubeadm                  kube-apiserver   kube-apiserver.tar         kube-controller-manager.docker_tag  kubectl                      kube-proxy  kube-proxy.tar         kube-scheduler.docker_tag  mounter
root@cks-master:~/hash# sha512sum kubernetes/server/bin/kube-apiserver
49b3a12ee597ea3bf9ece98accb62018ef758e4766ae44e24386838306cf69a2bc5dc7f8c0b728abecb972a4b651271f140bfdf0047e483c1556662cbd5b914a  kubernetes/server/bin/kube-apiserver
root@cks-master:~/hash# sha256sum kubernetes/server/bin/kube-apiserver > compare

1.3.2 再次确认下 kubernetes集群中kube-apiserver运行的是同版本1.19.3，然后container中是没有bash sh的。使用docker cp copy到container-fs文件夹，当然其实也可以用kubectl cp查找文件夹中kube-apiserver文件。然后sh512sum ，追加如compare文件。对哈希值进行对比：

代码语言：txt复制
root@cks-master:~/hash# kubectl get pods -n kube-system|grep api
kube-apiserver-cks-master            1/1     Running   0          42d
root@cks-master:~/hash#  kubectl get pod kube-apiserver-cks-master -n kube-system -o yaml|grep image
            f:image: {}
            f:imagePullPolicy: {}
    image: k8s.gcr.io/kube-apiserver:v1.19.3
    imagePullPolicy: IfNotPresent
    image: k8s.gcr.io/kube-apiserver:v1.19.3
    imageID: docker://sha256:a301be0cd44bb11162da49b9c55fc5d137f493bdefcf80226378204be403fa41
root@cks-master:~/hash# kubectl exec -it kube-apiserver-cks-master bash -n kube-system
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead.
OCI runtime exec failed: exec failed: container_linux.go:349: starting container process caused "exec: "bash": executable file not found in $PATH": unknown
command terminated with exit code 126
root@cks-master:~/hash# docker ps |grep apiserver
72c54882e5c0        a301be0cd44b           "kube-apiserver --ad…"   6 weeks ago         Up 6 weeks                              k8s_kube-apiserver_kube-apiserver-cks-master_kube-system_a2aef6235c950d78a8c2a8f52536f35e_0
4045b57cf208        k8s.gcr.io/pause:3.2   "/pause"                 6 weeks ago         Up 6 weeks                              k8s_POD_kube-apiserver-cks-master_kube-system_a2aef6235c950d78a8c2a8f52536f35e_0
root@cks-master:~/hash# docker cp 72c54882e5c0:/ container-fs
root@cks-master:~/hash# find container-fs/ -name kube-apiserver
container-fs/usr/local/bin/kube-apiserver
root@cks-master:~/hash# sha512sum container-fs/usr/local/bin/kube-apiserver
49b3a12ee597ea3bf9ece98accb62018ef758e4766ae44e24386838306cf69a2bc5dc7f8c0b728abecb972a4b651271f140bfdf0047e483c1556662cbd5b914a  container-fs/usr/local/bin/kube-apiserver
root@cks-master:~/hash# sha512sum container-fs/usr/local/bin/kube-apiserver >> co
compare       container-fs/ 
root@cks-master:~/hash# sha512sum container-fs/usr/local/bin/kube-apiserver >> compare 
root@cks-master:~/hash# cat compare 
3bda7b83d70fc762759f88a93b760355a6c1023be959d613a3faf113b975200c  kubernetes/server/bin/kube-apiserver
49b3a12ee597ea3bf9ece98accb62018ef758e4766ae44e24386838306cf69a2bc5dc7f8c0b728abecb972a4b651271f140bfdf0047e483c1556662cbd5b914a  container-fs/usr/local/bin/kube-apiserver
root@cks-master:~/hash# rm -rf compare 
root@cks-master:~/hash# sha512sum kubernetes/server/bin/kube-apiserver
49b3a12ee597ea3bf9ece98accb62018ef758e4766ae44e24386838306cf69a2bc5dc7f8c0b728abecb972a4b651271f140bfdf0047e483c1556662cbd5b914a  kubernetes/server/bin/kube-apiserver
root@cks-master:~/hash# sha512sum kubernetes/server/bin/kube-apiserver > compare
root@cks-master:~/hash# cat compare 
49b3a12ee597ea3bf9ece98accb62018ef758e4766ae44e24386838306cf69a2bc5dc7f8c0b728abecb972a4b651271f140bfdf0047e483c1556662cbd5b914a  kubernetes/server/bin/kube-apiserver
root@cks-master:~/hash# sha512sum container-fs/usr/local/bin/kube-apiserver >> compare
root@cks-master:~/hash# cat compare 
49b3a12ee597ea3bf9ece98accb62018ef758e4766ae44e24386838306cf69a2bc5dc7f8c0b728abecb972a4b651271f140bfdf0047e483c1556662cbd5b914a  kubernetes/server/bin/kube-apiserver
49b3a12ee597ea3bf9ece98accb62018ef758e4766ae44e24386838306cf69a2bc5dc7f8c0b728abecb972a4b651271f140bfdf0047e483c1556662cbd5b914a  container-fs/usr/local/bin/kube-apiserver
kubernetes 容器服务

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