使用CloudShell 来一次完成ACK集群的RAM授权和RBAC授权
- 登录CloudShell获取一个配置完整集群管理命令行
- 授权
List existing users
aliyun ram ListUsers | jq -r ".Users.User[].UserName"
wget https://ack-downloads.oss-cn-hangzhou.aliyuncs.com/rbac/ack-grant-once -O ack-grant-once && chmod 755 ack-grant-once
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Grant permission once
./ack-grant-once <USER_NAME> <ROLE: one of custom:network-view, cs:admin, cs:ops and cs:dev>
e.g.
./ack-grant-once eric custom:network-view
Prerequisite
Prepare kube config for resource admin user kubernetes-admin before you get start cli and api calls.
Download public/privite kubernetes config file from cluster detail dashboard
https://cs.console.aliyun.com/#/k8s/cluster/<your_cluster_id>/info?eci=false
Otherwise fetch kubenetes config file with openAPI
https://help.aliyun.com/document_detail/86798.html?spm=a2c4g.11186623.6.804.385a49feoJu0gZ
Notice:
certificate-authority-data: kubeconfig ca
user->client-certificate-data: kubeconfig cert
user->client-key-data: kubeconfig key
Decode the base64 for above 3 ca/certs file to put into kubeconfig config.
echo * | base64 –d
RBAC
Grant permission of ACK RBAC thru CLI of kubectl
"cs:admin": cluster admin and full read/write access
"cs:ops": cluster operator without write access of pv/namespace/node
"cs:dev": developer of namespace level access
Additional network-view role is added for readonly access of network operator
"custom:network-view": read access for node/service/endpoints
wget http://ack-downloads.oss-cn-hangzhou.aliyuncs.com/rbac/ack-grant -O ack-grant && chmod 755 ack-grant
./ack-grant <USER_ID> <ROLE: one of custom:network-view, cs:admin, cs:ops and cs:dev>
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Use Python SDK to grant privilege to sub-account of aliyun
pip install kubernetes
wget http://ack-downloads.oss-cn-hangzhou.aliyuncs.com/rbac/ack-grant.py -O ack-grant.py
python ack-grant.py -u <UID of sub-account> -r cs:ops -c /Users/eric/.kube/config_f3
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RBAC API
Example to DELETE existing clusterrolebinding
curl -k -v -XDELETE -H "Accept: application/json" -H "Content-Type: application/json" -H "User-Agent: kubectl/v1.10.3 (darwin/amd64) kubernetes/2bba012" https://<public/private IP of Kubernetes API server>:6443/apis/rbac.authorization.k8s.io/v1/clusterrolebindings/<UID of sub-account>-clusterrolebinding
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Create new clusterrolebinding
Request Body: {"apiVersion":"rbac.authorization.k8s.io/v1","kind":"ClusterRoleBinding","metadata":{"name":"<UID of sub-account>-clusterrolebinding","namespace":""},"roleRef":{"apiGroup":"rbac.authorization.k8s.io","kind":"ClusterRole","name":"cs:ops"},"subjects":[{"apiGroup":"rbac.authorization.k8s.io","kind":"User","name":"<UID of sub-account>"}]}
curl -k -v -XPOST -H "Accept: application/json" -H "Content-Type: application/json" -H "User-Agent: kubectl/v1.10.3 (darwin/amd64) kubernetes/2bba012" https://<public/private IP of Kubernetes API server>:6443/apis/rbac.authorization.k8s.io/v1/clusterrolebindings
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