mirror of https://github.com/easzlab/kubeasz.git
fix to support recreating CA and certs
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# 强制更新CA和所有证书
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- WARNNING: 此命令使用需要小心谨慎,确保了解功能背景和可能的结果;执行后,它会重新创建集群CA证书以及由它颁发的所有其他证书;一般适合于集群admin.conf不小心泄露,为了避免集群被非法访问,重新创建CA,从而使已泄漏的admin.conf失效。
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- 如果需要分发受限的kubeconfig,强烈建议使用[自定义权限和期限的kubeconfig](kcfg-adm.md)
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## 使用帮助
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确认需要强制更新后,在ansible 控制节点使用如下命令:(xxx 表示需要操作的集群名)
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``` bash
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docker exec -it kubeasz ezctl kca-renew xxx
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# 或者使用 dk ezctl kca-renew xxx
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```
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上述命令执行后,按序进行以下的操作:详见`playbooks/96.update-certs.yml`
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- 重新生成CA证书,以及各种kubeconfig
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- 签发新etcd证书,并使用新证书重启etcd服务
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- 签发新kube-apiserver 证书,并重启kube-apiserver/kube-controller-manager/kube-scheduler 服务
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- 签发新kubelet 证书,并重启kubelet/kube-proxy 服务
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- 重启网络组件pod
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- 重启其他集群组件pod
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- **特别注意:** 如果集群中运行的业务负载pod需要访问apiserver,需要重启这些pod
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## 检查验证
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更新完毕,注意检查集群组件日志和容器pod日志,确认集群处于正常状态
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- 集群组件日志:使用journalctl -u xxxx.service -f 依次检查 etcd.service/kube-apiserver.service/kube-controller-manager.service/kube-scheduler.service/kubelet.service/kube-proxy.service
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- 容器pod日志:使用 kubectl logs 方式检查容器日志
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@ -7,4 +7,5 @@
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- [集群备份与恢复](cluster_restore.md)
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- [管理分发用户 kubeconfig](kcfg-adm.md)
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- [修改 APISERVER 证书](ch_apiserver_cert.md)
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- [强制更新CA和所有证书](force_ch_certs.md)
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- [配置负载转发 ingress nodeport](loadballance_ingress_nodeport.md)
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2
ezctl
2
ezctl
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@ -465,7 +465,7 @@ function renew-ca() {
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logger warn "WARNNING: this script should be used with greate caution"
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logger warn "WARNNING: it will recreate CA certs and all of the others certs used in the cluster"
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COMMAND="ansible-playbook -i clusters/$1/hosts -e CHANGE_CA=true -e @clusters/$1/config.yml playbooks/96.update-certs.yml -t force_change_certs"
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COMMAND="ansible-playbook -i clusters/$1/hosts -e @clusters/$1/config.yml -e CHANGE_CA=true playbooks/96.update-certs.yml -t force_change_certs"
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echo "$COMMAND"
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logger info "cluster:$1 process begins in 5s, press any key to abort:\n"
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! (read -r -t5 -n1) || { logger warn "process abort"; return 1; }
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@ -2,6 +2,14 @@
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# Force to recreate CA certs and all of the others certs used in the cluster.
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# It should be used when the admin.conf leaked, and a new one will be created in place of the leaked one.
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# backup old certs
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- hosts: localhost
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tasks:
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- name: backup old certs
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shell: "cd {{ cluster_dir }} && \
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cp -r ssl ssl-$(date +'%Y%m%d%H%M')"
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tags: force_change_certs
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# to create CA, kubeconfig, kube-proxy.kubeconfig etc.
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# need to set 'CHANGE_CA=true'
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- hosts: localhost
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@ -1,6 +1,7 @@
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- name: 获取所有已经创建的POD信息
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command: "{{ base_dir }}/bin/kubectl get pod --all-namespaces"
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register: pod_info
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tags: force_change_certs
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- name: 注册变量 DNS_SVC_IP
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shell: echo {{ SERVICE_CIDR }}|cut -d/ -f1|awk -F. '{print $1"."$2"."$3"."$4+2}'
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