{"id":214,"date":"2021-03-11T14:30:42","date_gmt":"2021-03-11T06:30:42","guid":{"rendered":"\/?p=214"},"modified":"2021-03-11T14:30:43","modified_gmt":"2021-03-11T06:30:43","slug":"23-%e5%9f%ba%e4%ba%8e%e8%a7%92%e8%89%b2%e7%9a%84%e6%9d%83%e9%99%90%e6%8e%a7%e5%88%b6%e7%9a%84rbac%e6%a1%86%e6%9e%b6","status":"publish","type":"post","link":"http:\/\/xinblog.ltd\/?p=214","title":{"rendered":"23.\u57fa\u4e8e\u89d2\u8272\u7684\u6743\u9650\u63a7\u5236\u7684RBAC\u6846\u67b6"},"content":{"rendered":"

\u8bb2\u89e3\u4e86\u5f88\u591a\u7684Kubernetes\u5185\u7f6e\u7684\u7f16\u6392\u5bf9\u8c61,\u4ee5\u53ca\u5bf9\u5e94\u7684\u63a7\u5236\u5668\u6a21\u5f0f\u7684\u5b9e\u73b0\u539f\u7406,\u6b64\u5916,\u8fd8\u5256\u6790\u4e86\u81ea\u5b9a\u4e49API\u8d44\u6e90\u7c7b\u578b\u548c\u63a7\u5236\u5668\u7684\u7f16\u5199\u65b9\u5f0f<\/p>\n

\u90a3\u4e48\u80fd\u5426\u7f16\u5199\u4e00\u4e2a\u81ea\u5df1\u7684\u7f16\u6392\u5bf9\u8c61<\/p>\n

\u8fd9\u662f\u5fc5\u7136\u53ef\u4ee5\u7684,\u4e5f\u662fKubernetes\u9879\u76ee\u4e2d\u6700\u5438\u5f15\u4eba\u7684<\/p>\n

Kubernetes\u5185\u7f6e\u7684\u7f16\u6392\u5bf9\u8c61,\u5f88\u96be\u505a\u5230\u5b8c\u5168\u7684\u6ee1\u8db3\u6240\u6709\u9700\u6c42,\u5f88\u591a\u5b9e\u9645\u7684\u5bb9\u5668\u5316\u5de5\u4f5c,\u90fd\u8981\u6c42\u8bbe\u8ba1\u4e00\u4e2a\u81ea\u5df1\u7684\u7f16\u6392\u5bf9\u8c61,\u5b9e\u73b0\u81ea\u5df1\u7684\u63a7\u5236\u5668\u6a21\u5f0f<\/p>\n

\u5728Kubernetes\u9879\u76ee\u4e2d,\u57fa\u4e8e\u63d2\u4ef6\u673a\u5236\u6765\u5b8c\u6210\u8fd9\u4e9b\u5de5\u4f5c,\u4e0d\u9700\u8981\u4fee\u6539\u4efb\u4f55\u4e00\u884c\u7684\u4ee3\u7801<\/p>\n

\u5728\u7f16\u5199\u81ea\u5df1\u7684API\u5bf9\u8c61\u4e4b\u524d,\u9700\u8981\u5148\u4e86\u89e3RBAC<\/p>\n

\u5728Kubernetes\u4e2d,\u6240\u6709API\u5bf9\u8c61,\u90fd\u4fdd\u5b58\u5728Etcd\u4e2d,\u4e0d\u8fc7,\u5bf9\u8fd9\u4e9bAPI\u5bf9\u8c61\u7684\u64cd\u4f5c,\u90fd\u662f\u901a\u8fc7\u8bbf\u95eekube-apiserver\u6765\u5b9e\u73b0\u7684,\u6240\u4ee5\u9700\u8981APIServer\u6765\u5b9e\u73b0\u6388\u6743\u64cd\u4f5c<\/p>\n

\u800cAPIServer\u4e2d\u5b8c\u6210\u6388\u6743\u7684\u5de5\u4f5c\u673a\u5236,\u5c31\u662fRBAC Role-Based Access Control<\/p>\n

\u5982\u679c\u76f4\u63a5\u67e5\u770bKubernetes\u9879\u76ee\u4e2d\u5173\u4e8eRBAC\u7684\u7ec6\u8282,\u53ef\u80fd\u6709\u70b9\u590d\u6742,\u4e0d\u8fc7,\u57fa\u672c\u7684\u6982\u5ff5\u4e0d\u96be,\u5206\u4e3a\u4e86Role\u89d2\u8272,\u5176\u5b9e\u662f\u4e00\u7ec4\u89c4\u5219,\u5b9a\u4e49\u4e86\u4e00\u7ec4\u89c4\u5219,\u5bf9\u5e94\u7740K8S\u7684\u64cd\u4f5c\u6743\u9650<\/p>\n

Subject \u88ab\u4f5c\u7528\u8005,\u53ef\u4ee5\u662f\u4eba,\u53ef\u4ee5\u662f\u673a\u5668,\u53ef\u4ee5\u662fKubernetes\u4e2d\u5b9a\u4e49\u7684\u7528\u6237<\/p>\n

RoleBinding,\u5b9a\u4e49\u4e86\u88ab\u4f5c\u7528\u8005,\u89d2\u8272\u7684\u7ed1\u5b9a\u5173\u7cfb<\/p>\n

\u8fd9\u51e0\u4e2a\u6982\u5ff5,\u6b63\u662fRBAC\u4f53\u7cfb\u7684\u6838\u5fc3\u6240\u5728<\/p>\n

\u9996\u5148\u662fRole\u7684\u6982\u5ff5<\/p>\n

Role\u672c\u8eab\u5c31\u662f\u4e00\u4e2aKubernetes\u7684API\u5bf9\u8c61,\u5b9a\u4e49\u5982\u4e0b\u6240\u793a<\/p>\n

kind: Role<\/p>\n

apiVersion: rbac.authorization.k8s.io\/v1<\/p>\n

metadata:<\/p>\n

namespace: mynamespace<\/p>\n

name: example-role<\/p>\n

rules:<\/p>\n

– apiGroups: [“”]<\/p>\n

resources: [“pods”]<\/p>\n

verbs: [“get”, “watch”, “list”]<\/p>\n

\u8fd9\u4e2aRole\u5bf9\u8c61\u6307\u5b9a\u4e86\u80fd\u591f\u4ea7\u751f\u4f5c\u7528\u7684Namespace\u662fmynamespace,Namespace\u662fKuberenetes\u4e2d\u7684\u4e00\u4e2a\u903b\u8f91\u7ba1\u7406\u5355\u4f4d,\u4e0d\u540cNamespace\u7684API\u5bf9\u8c61,\u5728kubectl \u64cd\u4f5c\u65f6\u5019,\u662f\u4e92\u76f8\u9694\u79bb\u7684<\/p>\n

\u6bd4\u5982kubectl get pods -n mynamespace<\/p>\n

\u5f53\u7136,\u53ea\u9650\u4e8e\u903b\u8f91\u4e0a\u7684\u9694\u79bb,Namespace\u5e76\u4e0d\u4f1a\u63d0\u4f9b\u771f\u6b63\u7684\u9694\u79bb\u6216\u8005\u79df\u6237\u80fd\u529b<\/p>\n

\u5728\u8fd9\u4e2aRole \u7684 rules\u5b57\u6bb5,\u4f7f\u7528\u7684\u5c31\u662f\u5176\u5b9a\u4e49\u7684\u6743\u9650\u89c4\u5219,\u8fd9\u6761\u89c4\u5219\u5c31\u662f\u5141\u8bb8\u88ab\u4f5c\u7528\u8005\u53ef\u4ee5\u5bf9mynamespace\u4e0b\u7684\u6240\u6709Pod,\u8fdb\u884cGET WATCH LIST\u64cd\u4f5c<\/p>\n

\u90a3\u4e48\u8fd9\u4e2a\u89c4\u5219\u5982\u4f55\u548c\u5177\u4f53\u7684\u88ab\u4f5c\u7528\u8005\u6302\u94a9\u7684\u5462?\u8fd9\u5c31\u9700\u8981RoleBinding\u6765\u5b9e\u73b0\u4e86<\/p>\n

RoleBing\u672c\u8eab\u5c31\u662f\u4e00\u4e2aKubernetes\u7684API\u5bf9\u8c61<\/p>\n

kind: RoleBinding<\/p>\n

apiVersion: rbac.authorization.k8s.io\/v1<\/p>\n

metadata:<\/p>\n

name: example-rolebinding<\/p>\n

namespace: mynamespace<\/p>\n

subjects:<\/p>\n

– kind: User<\/p>\n

name: example-user<\/p>\n

apiGroup: rbac.authorization.k8s.io<\/p>\n

roleRef:<\/p>\n

kind: Role<\/p>\n

name: example-role<\/p>\n

apiGroup: rbac.authorization.k8s.io<\/p>\n

\u5728\u8fd9\u4e2aRoleBinding\u5bf9\u7528\u6237\u4e2d\u5b9a\u4e49\u4e86\u4e00\u4e2asubjects\u5b57\u6bb5,\u5373\u4e3a\u88ab\u4f5c\u7528\u8005,\u7c7b\u578b\u662fUser,\u5373\u4e3aKubernetes\u4e2d\u7684\u7528\u6237,\u7528\u6237\u540d\u5b57\u4e3aexample-user<\/p>\n

\u4f46\u662f\u5b9e\u9645\u4e0a,Kubernetes\u4e2d\u5e76\u6ca1\u6709\u4e00\u4e2a\u53eb\u505aUser\u7684API\u5bf9\u8c61,\u90e8\u7f72\u548c\u521b\u5efaKuberenetes\u7684\u6d41\u7a0b,\u4e5f\u4e0d\u9700\u8981User<\/p>\n

\u8fd9\u4e2aUser\u4ece\u4f55\u800c\u6765<\/p>\n

\u8fd9\u4e2aKuberenetes\u4e2d\u7684User,\u5c31\u662f\u7528\u6237,\u53ea\u662f\u4e00\u4e2a\u6388\u6743\u7cfb\u7edf\u4e2d\u7684\u903b\u8f91\u6982\u5ff5,\u901a\u8fc7\u5916\u90e8\u8ba4\u8bc1\u670d\u52a1,\u6bd4\u5982keystone,\u6765\u63d0\u4f9b,\u4e5f\u53ef\u4ee5\u76f4\u63a5\u7ed9APIServer\u6307\u5b9a\u4e00\u4e2a\u7528\u6237\u540d,\u4f46\u662f\u5927\u591a\u6570\u7684\u60c5\u51b5\u4e0b,\u6211\u4eec\u53ea\u9700\u8981\u4f7f\u7528Kubernetes\u4e2d\u63d0\u4f9b\u7684\u5185\u7f6e\u7528\u6237,\u5c31\u591f\u4e86<\/p>\n

\u6211\u4eec\u901a\u8fc7\u4e00\u4e2aroleRef\u5b57\u6bb5,\u6765\u5229\u7528\u540d\u5b57,\u7ed1\u5b9a\u4e86Subject\u548cRole\u4e4b\u95f4\u7684\u5173\u7cfb<\/p>\n

\u800cRole \u548c RoleBinding\u5bf9\u8c61\u90fd\u662fNamespaced\u5bf9\u8c61,\u5bf9\u6743\u9650\u7684\u9650\u5236\u89c4\u5219\u4e5f\u53ea\u5bf9\u81ea\u5df1\u7684Namesapce\u4e2d\u6709\u6548,roleRef\u53ea\u80fd\u5f15\u7528\u5f53\u524dNamesapce\u7684Role\u5bf9\u8c61<\/p>\n

\u5bf9\u4e8e\u975eNamespaced\u7684\u5bf9\u8c61,\u8bf8\u5982Node,\u6216\u8005\u67d0\u4e00\u4e2aRole\u60f3\u8981\u4f5c\u7528\u4e8e\u6240\u6709Namepsace\u4e2d,\u5982\u4f55\u529e\u5462<\/p>\n

\u8fd9\u5c31\u9700\u8981ClusterRole\u548cClusterRoleBinding\u8fd9\u4e24\u4e2a\u7ec4\u5408\u4e86,\u8fd9\u4e24\u4e2aAPI\u5bf9\u8c61\u7684\u7528\u6cd5\u548cRole\u548cRoleBinding\u5b8c\u5168\u4e00\u6837,\u4e0d\u8fc7\u5b9a\u4e49\u4e2d,\u6ca1\u4e86Namespace\u5b57\u6bb5<\/p>\n

kind: ClusterRole<\/p>\n

apiVersion: rbac.authorization.k8s.io\/v1<\/p>\n

metadata:<\/p>\n

name: example-clusterrole<\/p>\n

rules:<\/p>\n

– apiGroups: [“”]<\/p>\n

resources: [“pods”]<\/p>\n

verbs: [“get”, “watch”, “list”]<\/p>\n

\u4e0e\u4e4b\u5bf9\u5e94\u7684RoleBinding,\u53ef\u4ee5\u662fClusterRoleBinding<\/p>\n

kind: ClusterRoleBinding<\/p>\n

apiVersion: rbac.authorization.k8s.io\/v1<\/p>\n

metadata:<\/p>\n

name: example-clusterrolebinding<\/p>\n

subjects:<\/p>\n

– kind: User<\/p>\n

name: example-user<\/p>\n

apiGroup: rbac.authorization.k8s.io<\/p>\n

roleRef:<\/p>\n

kind: ClusterRole<\/p>\n

name: example-clusterrole<\/p>\n

apiGroup: rbac.authorization.k8s.io<\/p>\n

\u8fd9\u5c31\u662f,\u540d\u4e3aexample-Role\u7528\u6237,\u62e5\u6709\u5bf9\u6240\u6709Namesapce\u4e2d\u7684Pod\u8fdb\u884cGET WATCH LIST\u7684\u64cd\u4f5c\u6743\u9650<\/p>\n

\u76ee\u524d\u53ef\u9009\u7684\u6743\u9650\u6709<\/p>\n

verbs: [“get”, “list”, “watch”, “create”, “update”, “patch”, “delete”]<\/p>\n

Role\u5bf9\u8c61\u7684rules\u5b57\u6bb5\u4e5f\u53ef\u4ee5\u8fdb\u4e00\u6b65\u7684\u7ec6\u5316,\u6bd4\u5982,\u9488\u5bf9\u67d0\u4e00\u5bf9\u8c61\u7684\u6743\u9650\u8fdb\u884c\u8bbe\u7f6e<\/p>\n

rules:<\/p>\n

– apiGroups: [“”]<\/p>\n

resources: [“configmaps”]<\/p>\n

resourceNames: [“my-config”]<\/p>\n

verbs: [“get”]<\/p>\n

\u5927\u591a\u6570\u65f6\u5019,\u90fd\u4e0d\u592a\u5b9e\u7528\u7528\u6237\u8fd9\u4e2a\u529f\u80fd,\u76f4\u63a5\u4f7f\u7528Kuberentes\u4e2d\u7684\u5185\u7f6e\u7528\u6237<\/p>\n

\u8fd9\u4e2aKuberenetes\u8d1f\u8d23\u7ba1\u7406\u7684\u5185\u7f6e\u7528\u6237,\u6b63\u662f\u6211\u4eec\u63d0\u5230\u6253\u8fc7\u7684ServerAccount<\/p>\n

\u90a3\u4e48\u8fd9\u4e2aServerAccount,\u53ef\u4ee5\u770b\u505a\u5c31\u662f\u6211\u4eec\u7684Role,\u5b9a\u4e49\u7684yaml\u5982\u4e0b<\/p>\n

apiVersion: v1<\/p>\n

kind: ServiceAccount<\/p>\n

metadata:<\/p>\n

namespace: mynamespace<\/p>\n

name: example-sa<\/p>\n

\u4e00\u4e2a\u6700\u7b80\u5355\u7684ServiceAccount\u5bf9\u8c61\u53ea\u9700\u8981Name\u548cNamespace\u8fd9\u4e24\u4e2a\u57fa\u672c\u7684\u5b57\u6bb5<\/p>\n

\u7136\u540e\u5229\u7528RoleBinding\u7684YAML\u6587\u4ef6,\u6765\u95ee\u8fd9\u4e2aServiceAccount\u5206\u914d\u6743\u9650<\/p>\n

kind: RoleBinding<\/p>\n

apiVersion: rbac.authorization.k8s.io\/v1<\/p>\n

metadata:<\/p>\n

name: example-rolebinding<\/p>\n

namespace: mynamespace<\/p>\n

subjects:<\/p>\n

– kind: ServiceAccount<\/p>\n

name: example-sa<\/p>\n

namespace: mynamespace<\/p>\n

roleRef:<\/p>\n

kind: Role<\/p>\n

name: example-role<\/p>\n

apiGroup: rbac.authorization.k8s.io<\/p>\n

\u5728\u8fd9\u4e2aRoleBinding\u5bf9\u8c61\u4e2d,subjects\u5b57\u6bb5\u7684\u7c7b\u578b,\u4e0d\u662f\u4e00\u4e2auser,\u800c\u662fServiceAccount,\u540d\u4e3aexample-sa,\u800c\u7ed1\u5b9a\u7684Role\u5bf9\u8c61,\u4f9d\u7136\u662fexample-role,\u8fd9\u662f\u4e00\u5f00\u59cb\u5b9a\u4e49\u7684Role\u5bf9\u8c61<\/p>\n

\u7136\u540e\u8fdb\u884c\u521b\u5efa\u8fd9\u4e09\u4e2a\u5bf9\u8c61<\/p>\n

$ kubectl create -f svc-account.yaml<\/p>\n

$ kubectl create -f role-binding.yaml<\/p>\n

$ kubectl create -f role.yaml<\/p>\n

\u7136\u540e\u67e5\u770b\u4e00\u4e0b\u8fd9\u4e2aServiceAccount\u7684\u8be6\u7ec6\u4fe1\u606f<\/p>\n

$ kubectl get sa -n mynamespace -o yaml<\/p>\n

– apiVersion: v1<\/p>\n

kind: ServiceAccount<\/p>\n

metadata:<\/p>\n

creationTimestamp: 2018-09-08T12:59:17Z<\/p>\n

name: example-sa<\/p>\n

namespace: mynamespace<\/p>\n

resourceVersion: “409327”<\/p>\n

…<\/p>\n

secrets:<\/p>\n

– name: example-sa-token-vmfg6<\/p>\n

\u4f1a\u81ea\u52a8\u5206\u914d\u4e00\u4e2asercet\u5bf9\u8c61,\u8fd9\u4e2asectet,\u5c31\u662fServiceAccount\u5bf9\u5e94\u7684,\u548cAPIServer\u8fdb\u884c\u4ea4\u4e92\u7684\u6388\u6743\u6587\u4ef6,\u79f0\u4e3aToken,Token\u6587\u4ef6\u7684\u5185\u5bb9\u4e00\u822c\u662f\u8bc1\u4e66\u6216\u8005\u5bc6\u7801,\u4ee5\u4e00\u4e2aSecret\u7684\u5bf9\u8c61\u65b9\u5f0f\u4fdd\u5b58\u5728ETCD<\/p>\n

\u8fd9\u65f6\u5019,\u7528\u6237\u7684Pod,\u5c31\u53ef\u4ee5\u58f0\u660e\u4f7f\u7528\u8fd9\u4e2aServiceAccount,\u6bd4\u5982\u4e0b\u9762\u4f8b\u5b50<\/p>\n

apiVersion: v1<\/p>\n

kind: Pod<\/p>\n

metadata:<\/p>\n

namespace: mynamespace<\/p>\n

name: sa-token-test<\/p>\n

spec:<\/p>\n

containers:<\/p>\n

– name: nginx<\/p>\n

image: nginx:1.7.9<\/p>\n

serviceAccountName: example-sa<\/p>\n

\u8fd9\u4e2aPod\u751f\u6210\u4e86,\u8fd9\u4e2aServiceAccount\u7684token,\u5c31\u662f\u4e00\u4e2aSecret\u5bf9\u8c61,\u88ab\u6302\u8f7d\u5230\u4e86\u5bb9\u5668\u7684 \/var\/run\/secrets\/kubernetes.io\/serviceaccount\u76ee\u5f55\u4e0b<\/p>\n

$ kubectl describe pod sa-token-test -n mynamespace<\/p>\n

Name:\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0sa-token-test<\/p>\n

Namespace:\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 mynamespace<\/p>\n

…<\/p>\n

Containers:<\/p>\n

nginx:<\/p>\n

…<\/p>\n

Mounts:<\/p>\n

\/var\/run\/secrets\/kubernetes.io\/serviceaccount from example-sa-token-vmfg6 (ro)<\/p>\n

\u5728\u8fd9\u4e2a\u5bb9\u5668\u4e2d,\u53ef\u4ee5\u770b\u5230\u8fd9\u4e2a\u76ee\u5f55\u4e0b\u7684\u6587\u4ef6<\/p>\n

$ kubectl exec -it sa-token-test -n mynamespace — \/bin\/bash<\/p>\n

root@sa-token-test:\/# ls \/var\/run\/secrets\/kubernetes.io\/serviceaccount<\/p>\n

ca.crt namespace\u00a0 token<\/p>\n

\u5bb9\u5668\u7684\u5e94\u7528,\u5c31\u53ef\u4ee5\u4f7f\u7528ca.crt\u6765\u8bbf\u95eeAPIServer\u4e86,\u53ef\u4ee5\u8fdb\u884cGET WATCH LIST\u64cd\u4f5c,\u56e0\u4e3aexample-sa\u8fd9\u4e2aServiceAccount\u7684\u6743\u9650,\u5df2\u7ecf\u88abRole\u8fdb\u884c\u4e86\u9650\u5236<\/p>\n

\u800c\u4e14,\u5982\u679c\u4e00\u4e2aPod\u6ca1\u6709\u58f0\u660eserviceAccountName,Kubernetes\u4f1a\u5728\u5b83Namepsaace\u4e0b\u521b\u5efa\u4e00\u4e2adefault\u7684\u9ed8\u8ba4\u7684ServiceAccount,\u7136\u540e\u5206\u914d\u7ed9\u8fd9\u4e2aPod<\/p>\n

\u9ed8\u8ba4\u60c5\u51b5\u4e0b,\u8fd9\u4e2aServiceAccout\u6ca1\u6709\u5173\u8054\u4efb\u4f55Role,\u4e5f\u5c31\u8bf4,\u6709\u8bbf\u95eeAPIServer\u7684\u5927\u591a\u6570\u6743\u9650,\u5f53\u7136,\u4f7f\u7528\u7684Token\u8fd8\u662f\u9700\u8981ServiceAccount\u5bf9\u5e94\u7684Secret\u5bf9\u8c61\u63d0\u4f9b\u7684,\u5176\u7c7b\u578b\u662fkubernetes.io\/service-accout-token,\u5bf9\u5e94\u7684annotation,\u5b57\u6bb5,\u58f0\u660e\u4e86kubernetes.io\/service-account.name=default,\u8fd9\u4e2asecret\u4f1a\u8ddfNamespace\u4e0b\u540d\u4e3adefault\u7684serviceAccout\u8fdb\u884c\u7ed1\u5b9a<\/p>\n

\"\u56fe\u7247\"<\/p>\n

\"\u56fe\u7247\"<\/p>\n

\"\u56fe\u7247\"<\/p>\n

\u6240\u4ee5,\u5728\u751f\u4ea7\u73af\u5883\u4e0b,\u8fd8\u662f\u4e3a\u6240\u6709\u7684Namespace\u4e0b\u7684\u9ed8\u8ba4ServiceAccout \u7ed1\u5b9a\u4e00\u4e2a\u53ea\u8bfb\u7684Role<\/p>\n

\u9664\u4e86\u4e4b\u524d\u7684\u7528\u6237\u7684\u6982\u5ff5,Kubernetes\u8fd8\u62e5\u6709\u7528\u6237\u7ec4\u7684\u6982\u5ff5,\u5c31\u662f\u4e00\u7ec4\u7528\u6237\u7684\u6982\u5ff5,\u5982\u679c\u9700\u8981\u914d\u7f6e\u5916\u90e8\u8ba4\u8bc1\u670d\u52a1\u7684\u8bdd,\u8fd9\u4e2a \u7528\u6237\u7ec4\u7684\u6982\u5ff5\u5c31\u4f1a\u7531\u5916\u90e8\u8ba4\u8bc1\u670d\u52a1\u63d0\u4f9b<\/p>\n

\u5bf9\u4e8eKubernetes\u7684\u5185\u7f6e\u7528\u6237\u6765\u8bf4,\u7528\u6237\u7ec4\u7684\u6982\u5ff5\u4e5f\u9002\u7528<\/p>\n

\u4e00\u4e2aServiceAccount,\u5728Kubernetes\u4e2d\u5bf9\u5e94\u7684\u7528\u6237\u7684\u540d\u79f0\u4e3a<\/p>\n

system:serviceaccount:<Namespace\u540d\u5b57>:<ServiceAccount\u540d\u5b57><\/p>\n

\u5bf9\u5e94\u7684\u7528\u6237\u7ec4,\u5c31\u662f<\/p>\n

system:serviceaccounts:<Namespace\u540d\u5b57><\/p>\n

\u63a5\u4e0b\u6765\u770b\u5728RoleBinding\u91cc\u5b9a\u4e49\u7684subjects<\/p>\n

subjects:<\/p>\n

– kind: Group<\/p>\n

name: system:serviceaccounts:mynamespace<\/p>\n

apiGroup: rbac.authorization.k8s.io<\/p>\n

\u8bf4\u660e\u4e86\u8fd9\u4e2aRole\u7684\u6743\u9650\u89c4\u5219,\u4f5c\u7528\u4e8emynamesapce\u4e2d\u6240\u6709\u7684ServiceAccount,\u8fd9\u5c31\u662f\u7528\u6237\u7ec4\u7684\u6982\u5ff5<\/p>\n

subjects:<\/p>\n

– kind: Group<\/p>\n

name: system:serviceaccounts<\/p>\n

apiGroup: rbac.authorization.k8s.io<\/p>\n

\u8fd9\u6837,\u5c31\u4f5c\u7528\u4e8e\u6574\u4e2a\u7cfb\u7edf\u4e2d\u6240\u6709\u7684ServiceAccount<\/p>\n

\u5728Kubernetes\u4e2d,\u8fd8\u5185\u7f6e\u4e86\u5f88\u591a\u4e3a\u7cfb\u7edf\u4fdd\u7559\u7684ClusterRole,\u540d\u5b57\u90fd\u4ee5system:\u5f00\u5934<\/p>\n

\u53ef\u4ee5\u901a\u8fc7kubectl get clusterroles\u6765\u770b\u5230<\/p>\n

\u8fd9\u4e9b\u7cfb\u7edfClusterRole,\u662f\u7ed1\u5b9a\u7ed9Kubernetes\u7cfb\u7edf\u7ec4\u4ef6\u7684ServiceAccount\u4f7f\u7528\u7684<\/p>\n

\u6bd4\u5982,\u5176\u4e2d\u4e00\u4e2a\u540d\u4e3asystem:kube-scheduler\u7684ClusterRole,\u5b9a\u4e49\u7684\u6743\u9650\u89c4\u5219\u662fkube-scheduler\u6240\u9700\u8981\u7684\u6743\u9650,\u53ef\u4ee5\u770b\u8fd9\u4e2a\u6743\u9650\u7684\u5217\u8868<\/p>\n

$ kubectl describe clusterrole system:kube-scheduler<\/p>\n

Name:\u00a0 \u00a0 \u00a0 \u00a0 \u00a0system:kube-scheduler<\/p>\n

…<\/p>\n

PolicyRule:<\/p>\n

Resources\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Non-Resource URLs Resource Names\u00a0 \u00a0 Verbs<\/p>\n

———\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 —————–\u00a0 ————–\u00a0 \u00a0 —–<\/p>\n

…<\/p>\n

services\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0[]\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0[]\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 [get list watch]<\/p>\n

replicasets.apps\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0[]\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0[]\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 [get list watch]<\/p>\n

statefulsets.apps\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 []\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0[]\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 [get list watch]<\/p>\n

replicasets.extensions\u00a0 \u00a0 \u00a0 \u00a0[]\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0[]\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 [get list watch]<\/p>\n

poddisruptionbudgets.policy\u00a0 []\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0[]\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 [get list watch]<\/p>\n

pods\/status\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 []\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0[]\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 [patch update]<\/p>\n

\u8fd9\u4e2aSystem:kube-scheduleer\u7684ClusterRole,\u5c31\u4f1a\u7ed1\u5b9a\u7ed9kube-system Namespace\u4e0b\u540d\u4e3akube-scheduler\u7684serviceAccount,\u6b63\u662fKubernetes\u8c03\u5ea6\u5668\u7684Pod\u58f0\u660e\u7684serviceAccount<\/p>\n

\u9664\u6b64\u5916,Kubernetes\u8fd8\u63d0\u4f9b\u4e86\u56db\u4e2a\u9884\u5148\u5b9a\u4e49\u597d\u7684ClusterRole \u6765\u4f9b\u7528\u6237\u76f4\u63a5\u4f7f\u7528<\/p>\n

1.cluster-admin<\/p>\n

2.admin<\/p>\n

3.edit<\/p>\n

4.view<\/p>\n

\u901a\u8fc7\u5b83\u4eec\u7684\u540d\u5b57,\u53ef\u4ee5\u786e\u7acb\u4e86\u5b83\u4eec\u5b9a\u4e49\u4e86\u54ea\u4e9b\u6743\u9650,view\u6743\u9650\u7684ClusterRole,\u5c31\u89c4\u5b9a\u4e86\u88ab\u4f5c\u7ed1\u5b9a\u8005\u53ea\u5177\u6709Kubernetes API\u7684\u53ea\u8bfb\u6743\u9650<\/p>\n

cluster-admin\u7684\u89d2\u8272,\u662f\u6574\u4e2akubernetes\u9879\u76ee\u4e2d\u7684\u6700\u9ad8\u6743\u9650,\u53ef\u4ee5\u62e5\u6709\u5168\u90e8\u7684\u6743\u9650<\/p>\n\n\n\n
$ kubectl describe clusterrole cluster-admin -n kube-system<\/p>\n

Name:\u00a0 \u00a0 \u00a0 \u00a0 \u00a0cluster-admin<\/p>\n

Labels:\u00a0 \u00a0 \u00a0 \u00a0kubernetes.io\/bootstrapping=rbac-defaults<\/p>\n

Annotations:\u00a0 rbac.authorization.kubernetes.io\/autoupdate=true<\/p>\n

PolicyRule:<\/p>\n

Resources\u00a0 Non-Resource URLs Resource Names\u00a0 Verbs<\/p>\n

———\u00a0 —————–\u00a0 ————–\u00a0 —–<\/p>\n

*.*\u00a0 \u00a0 \u00a0 \u00a0 []\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0[]\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 [*]<\/p>\n

[*]\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 []\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 [*]<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u6240\u4ee5,\u5bf9\u4e8ecluster-admin\u7684\u4f7f\u7528\u8bf7\u52a1\u5fc5\u5c0f\u5fc3<\/p>\n

\u5728\u672c\u7bc7\u6587\u7ae0\u4e2d,\u4e3b\u8981\u662f\u5173\u4e8e\u4e86\u89d2\u8272\u7684\u8bbf\u95ee\u63a7\u5236<\/p>\n

\u5176\u5b9eRole,\u5c31\u662f\u4e00\u7ec4\u7684\u6743\u9650\u89c4\u5219\u7684\u5217\u8868,\u6211\u4eec\u5206\u914d\u8fd9\u4e9b\u6743\u9650\u7684\u65b9\u5f0f,\u5c31\u662f\u901a\u8fc7\u521b\u5efaRoleBinding\u5bf9\u8c61,\u5c06\u88ab\u4f5c\u7528\u8005\u548c\u6743\u9650\u5217\u8868\u8fdb\u884c\u7ed1\u5b9a<\/p>\n

\u4f46\u662f\u8fd9\u79cd\u7684\u5207\u6362\u65b9\u5f0f\u53ea\u80fd\u5bf9\u4e8enameSpace\u7ea7\u522b\u7684\u63a7\u5236,\u5982\u679c\u60f3\u8981\u7a81\u7834\u8fd9\u4e2a\u9650\u5236,\u53ef\u4ee5\u4f7f\u7528ClusterRole\u548cClusterRoleBinding,\u662fKuberentes\u96c6\u7fa4\u7ea7\u522b\u7684Role\u548cRoleBinding<\/p>\n

\u800c\u4e14\u6743\u9650\u7684\u88ab\u4f5c\u4fd1\u8005\u4e0d\u53ea\u662fUser,\u8fd8\u6709\u7740ServiceAccount \u548c Group,\u5e76\u4e14,\u5e38\u89c1\u4e8eRole+RoleBinding+ServiceAccount\u8fd9\u79cd\u6743\u9650\u5206\u914d\u65b9\u5f0f<\/p>\n

\u90a3\u4e48\u5982\u4f55\u4e3aNamespace\u4e0b\u7684\u9ed8\u8ba4ServiceAccount \u7ed1\u5b9a\u4e00\u4e2a\u53ea\u8bfbRole\u5462?<\/p>\n

kind: ClusterRoleBinding<\/p>\n

apiVersion: rbac.authorization.k8s.io\/v1<\/p>\n

metadata:<\/p>\n

name: readonly-all-default<\/p>\n

subjects:<\/p>\n

– kind: ServiceAccount<\/p>\n

name: default<\/p>\n

roleRef:<\/p>\n

kind: ClusterRole<\/p>\n

name: view<\/p>\n

apiGroup: rbac.authorization.k8s.io<\/p>\n","protected":false},"excerpt":{"rendered":"

\u8bb2\u89e3\u4e86\u5f88\u591a\u7684Kubernete […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"_links":{"self":[{"href":"http:\/\/xinblog.ltd\/index.php?rest_route=\/wp\/v2\/posts\/214"}],"collection":[{"href":"http:\/\/xinblog.ltd\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/xinblog.ltd\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/xinblog.ltd\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/xinblog.ltd\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=214"}],"version-history":[{"count":0,"href":"http:\/\/xinblog.ltd\/index.php?rest_route=\/wp\/v2\/posts\/214\/revisions"}],"wp:attachment":[{"href":"http:\/\/xinblog.ltd\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=214"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/xinblog.ltd\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=214"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/xinblog.ltd\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=214"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}