[TOC]
在开发环境给开发人员创建应用部署管理权限,可以使用dashboard的token和kubeconfig文件登录,并在开发人员机器上安装kubectl
命令,可以使用kubectl port-forward
命令。
因为我们用到了dashboard和kubeapps,所以他们的rbac权限都要分配。
创建namespace:dev
创建ServiceAccount:dev-user1
给相应权限,并绑定ServiceAccount。
kubectl apply -f dev-user1.yaml
---
# ServiceAccount
apiVersion: v1
kind: ServiceAccount
metadata:
name: dev-user1
namespace: dev
---
# role
kind: Role
apiVersion: rbac.authorization.k8s.io/v1
metadata:
namespace: dev
name: role-dev-user1
rules:
- apiGroups: [""]
resources: ["pods"]
verbs: ["get", "list", "watch", "delete", "update", "patch"]
- apiGroups: [""]
resources: ["pods/portforward", "pods/proxy"]
verbs: ["get", "list", "watch", "create", "update", "patch", "delete"]
- apiGroups: [""]
resources: ["pods/log"]
verbs: ["get", "list", "watch", "delete"]
- apiGroups: ["extensions", "apps"]
resources: ["deployments"]
verbs: ["get", "list", "watch", "create", "update", "patch", "delete"]
- apiGroups: [""]
resources: ["namespaces"]
verbs: ["get", "watch", "list"]
- apiGroups: [""]
resources: ["events"]
verbs: ["get", "watch", "list"]
- apiGroups: ["apps", "extensions"]
resources: ["replicasets"]
verbs: ["get", "watch", "list", "create", "update", "pathch", "delete"]
- apiGroups: [""]
resources: ["configmaps"]
verbs: ["get", "watch", "list", "create", "update", "pathch", "delete"]
- apiGroups: [""]
resources: ["persistentvolumeclaims"]
verbs: ["get", "watch", "list"]
- apiGroups: [""]
resources: ["secrets"]
verbs: ["get", "watch", "list"]
- apiGroups: [""]
resources: ["services"]
verbs: ["get", "watch", "list", "create", "update", "pathch", "delete"]
- apiGroups: ["extensions"]
resources: ["ingresses"]
verbs: ["get", "watch", "list"]
- apiGroups: ["apps"]
resources: ["daemonsets"]
verbs: ["get", "watch", "list"]
- apiGroups: ["batch"]
resources: ["jobs"]
verbs: ["get", "watch", "list"]
- apiGroups: ["batch"]
resources: ["cronjobs"]
verbs: ["get", "watch", "list"]
- apiGroups: [""]
resources: ["replicationcontrollers"]
verbs: ["get", "watch", "list"]
- apiGroups: ["apps"]
resources: ["statefulsets"]
verbs: ["get", "watch", "list"]
- apiGroups: [""]
resources: ["endpoints"]
verbs: ["get", "watch", "list"]
---
# role bind
kind: RoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: role-bind-dev-user1
namespace: dev
subjects:
- kind: ServiceAccount
name: dev-user1
namespace: dev
roleRef:
kind: Role
name: role-dev-user1
apiGroup: rbac.authorization.k8s.io
#---
## clusterrole
#kind: ClusterRole
#apiVersion: rbac.authorization.k8s.io/v1
#metadata:
# namespace: dev
# name: clusterrole-dev-user1
#rules:
#- apiGroups: [""]
# resources: ["namespaces"]
# verbs: ["get", "watch", "list"]
#
#---
## clusterrole bind
#kind: ClusterRoleBinding
#apiVersion: rbac.authorization.k8s.io/v1
#metadata:
# name: clusterrole-bind-dev-user1
# namespace: dev
#subjects:
#- kind: ServiceAccount
# name: dev-user1
# namespace: dev
#roleRef:
# kind: ClusterRole
# name: clusterrole-dev-user1
# apiGroup: rbac.authorization.k8s.io
kubectl apply -f https://raw.githubusercontent.com/kubeapps/kubeapps/master/docs/user/manifests/kubeapps-applications-read.yaml
kubectl create -n dev rolebinding dev-user1-view \
--clusterrole=kubeapps-applications-read \
--serviceaccount dev:dev-user1
export KUBEAPPS_NAMESPACE=kubeapps
kubectl apply -n $KUBEAPPS_NAMESPACE -f https://raw.githubusercontent.com/kubeapps/kubeapps/master/docs/user/manifests/kubeapps-repositories-read.yaml
kubectl create -n dev rolebinding dev-user1-edit \
--clusterrole=edit \
--serviceaccount dev:dev-user1
kubectl create -n $KUBEAPPS_NAMESPACE rolebinding dev1-user1-kubeapps-repositories-read \
--role=kubeapps-repositories-read \
--serviceaccount dev:dev-user1
token获取:
kubectl get -n dev secret $(kubectl get -n dev serviceaccount dev-user1 -o jsonpath='{.secrets[].name}') -o jsonpath='{.data.token}' | base64 --decode
通过token方式访问kube-apiserver
# 创建 kubectl config 文件
# 设置集群参数
kubectl config set-cluster kubernetes \
--insecure-skip-tls-verify=true \
--server="https://192.168.105.99:8443"
# 设置客户端认证参数
kubectl config set-credentials dev-user1 \
--token='上文中获取到的token'
# 设置上下文参数
kubectl config set-context kubernetes \
--cluster=kubernetes \
--user=dev-user1 \
--namespace=dev
# 设置默认上下文
kubectl config use-context kubernetes
注意
配置kubeconfig时指定路径,以免覆盖已有配置,--kubeconfig=configpath
也可以直接创建文件config,修改内容即可。
apiVersion: v1
clusters:
- cluster:
insecure-skip-tls-verify: true
server: https://192.168.105.99:8443
name: kubernetes
contexts:
- context:
cluster: kubernetes
namespace: dev
user: dev-user1
name: kubernetes
current-context: kubernetes
kind: Config
preferences: {}
users:
- name: dev-user1
user:
token: eyJhbGciOiJSUzI1NiIsImtpZCI6IiJ9.eyJpc3MiOiJrdWJlcm5ldGVzL3NlcnZpY2VhY2NvdW50Iiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9uYW1lc3BhY2UiOiJkZXYiLCJrdWJlcm5ldGVzLmlvL3NlcnZpY2VhY2NvdW50L3NlY3JldC5uYW1lIjoiZGV2LXVzZXIxLXRva2VuLTJsbDlnIiwia3ViZXJuZXRlcy5pby9zZXJ2aWNlYWNjb3VudC9zZX291bnQubmFtZSI6ImRldi11c2VyMSIsImt1YmVybmV0ZXMuaW8vc2VydmljZWFjY291bnQvc2VydmljZS1hY2NvdW50LnVpZCI6IjdiY2Q4N2E1LWM0NGEtMTFlOC1iY2I5LTAwMGMyOWVhM2UzMCIsInN1YiI6InN5c3RlbTpzZXJ2aWNlYWNjb3VudDpkZXY6ZGV2LXVzZXIxIn0.1M84CPHY-GoyeaRFyBcD49GTwG5o0HMhN8lVsH9GDiqdui-1ppyi3JMONRJ9aWdswEF7-wsb5d4MQEk-9z5yiVh3r8SMP0EhcUR5ierntzD1bwwwuYzDxE4vHAuPB1tTxM0fOL3H-BOjt68iBKmOtRJumx8LzSUleQiNBBqR1B_yRLqrO6yslw44WC432O5g1v
windows kubectl
命令安装
命令下载:
https://storage.googleapis.com/kubernetes-release/release/v1.12.0/bin/windows/amd64/kubectl.exe
然后将其放至系统PATH目录下,比如c:\Windows
命令使用时,可使用cmd、powershell或者其它命令提示行工具。推荐使用Git Bash,因为安装过Git,则安装了此工具。
kubeconfig文件
kubeconfig文件,即上文件中生成的config文件。
文件名为config
,文件放到 ~/.kube/下(~为用户家目录),因为kubectl命令默认读取此文件,否则每次使用kubectl命令,需要用参数--kubeconfig=configpath
指定。
kubectl get pod -n dev
kubectl port-forward svc/dev-mysql-mysqlha 3306:3306 -n dev
参考资料:
[1] https://kubernetes.io/docs/reference/access-authn-authz/rbac/
[2] https://blog.qikqiak.com/post/add-authorization-for-kubernetes-dashboard/
[3] https://github.com/kubeapps/kubeapps/blob/master/docs/user/access-control.md
[4] https://kubernetes.io/docs/reference/generated/kubectl/kubectl-commands#config
[5] https://kubernetes.io/docs/tasks/tools/install-kubectl/#configure-kubectl
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