k8s特权容器配置

• 确认kube-api是否开启了privileged参数

• [root@node1 ~]# ps -ef | grep privileged
  root 5041 5016 3 Feb17 ? 00:36:37 kube-apiserver --advertise-address=172.30.201.221 --allow-privileged=true --authorization-mode=Node,RBAC --client-ca-file=/etc/kubernetes/pki/ca.crt --enable-admission-plugins=NodeRestriction --enable-bootstrap-token-auth=true --etcd-cafile=/etc/kubernetes/pki/etcd/ca.crt --etcd-certfile=/etc/kubernetes/pki/apiserver-etcd-client.crt --etcd-keyfile=/etc/kubernetes/pki/apiserver-etcd-client.key --etcd-servers=https://127.0.0.1:2379 --insecure-port=0 --kubelet-client-certificate=/etc/kubernetes/pki/apiserver-kubelet-client.crt --kubelet-client-key=/etc/kubernetes/pki/apiserver-kubelet-client.key --kubelet-preferred-address-types=InternalIP,ExternalIP,Hostname --proxy-client-cert-file=/etc/kubernetes/pki/front-proxy-client.crt --proxy-client-key-file=/etc/kubernetes/pki/front-proxy-client.key --requestheader-allowed-names=front-proxy-client --requestheader-client-ca-file=/etc/kubernetes/pki/front-proxy-ca.crt --requestheader-extra-headers-prefix=X-Remote-Extra- --requestheader-group-headers=X-Remote-Group --requestheader-username-headers=X-Remote-User --secure-port=6443 --service-account-key-file=/etc/kubernetes/pki/sa.pub --service-cluster-ip-range=10.96.0.0/16 --tls-cert-file=/etc/kubernetes/pki/apiserver.crt --tls-private-key-file=/etc/kubernetes/pki/apiserver.key --feature-gates=RemoveSelfLink=false

  可以看到 --allow-privileged=true已经开启root权限。

• 编辑pod.yaml文件：

• apiVersion: v1
  kind: Pod
  metadata:
  name: test-pod
  spec:
  containers:
  - name: hello-world-container
  image: nginx:latest
  securityContext: ###添加参数启用容器root权限
  privileged: true
  capabilities:
  add: ["SYS_ADMIN"]
  runAsUser: 0

  之后可以进入容器使用root权限