本文主要是介绍suse 12 二进制部署 Kubernetets 1.19.7 - 第07章 - 部署kube-controller-manager组件,希望对大家解决编程问题提供一定的参考价值,需要的开发者们随着小编来一起学习吧!
文章目录
- 1.7、部署kube-controller-manager
- 1.7.0、创建kube-controller-manager请求证书
- 1.7.1、生成kube-controller-manager证书和私钥
- 1.7.2、创建kube-controller-manager的kubeconfig文件
- 1.7.3、配置kube-controller-manager为systemctl启动
- 1.7.4、分发kube-controller-manager证书和文件到其他节点
- 1.7.5、启动kube-controller-manager服务
- 1.7.6、查看kube-controller-manager端口
- 1.7.7、查看当前的leader
- suse 12 二进制部署 Kubernetes 集群系列合集:
- suse 12 二进制部署 Kubernetets 1.19.7 - 第00章 - 环境准备
- suse 12 二进制部署 Kubernetets 1.19.7 - 第01章 - 创建CA证书和kubectl集群管理命令
- suse 12 二进制部署 Kubernetets 1.19.7 - 第02章 - 部署etcd集群
- suse 12 二进制部署 Kubernetets 1.19.7 - 第03章 - 部署flannel插件
- suse 12 二进制部署 Kubernetets 1.19.7 - 第04章 - 部署docker服务
- suse 12 二进制部署 Kubernetets 1.19.7 - 第05章 - 部署kube-nginx
- suse 12 二进制部署 Kubernetets 1.19.7 - 第06章 - 部署kube-apiserver组件
- suse 12 二进制部署 Kubernetets 1.19.7 - 第07章 - 部署kube-controller-manager组件
- suse 12 二进制部署 Kubernetets 1.19.7 - 第08章 - 部署kube-scheduler组件
- suse 12 二进制部署 Kubernetets 1.19.7 - 第09章 - 部署kubelet组件
- suse 12 二进制部署 Kubernetets 1.19.7 - 第10章 - 部署kube-proxy组件
- suse 12 二进制部署 Kubernetets 1.19.7 - 第11章 - 部署coredns组件
- suse 12 二进制部署 Kubernetets 1.19.7 - 第12章 - 部署dashboard插件
- suse 12 二进制部署 Kubernetets 1.19.7 - 第13章 - 部署metrics-server插件
- suse 12 编译部署Keepalived + nginx 为 kube-apiserver 提供高可用
- suse 12 二进制部署 Kubernetets 1.19.7 - 番外篇 - 增加node节点
1.7、部署kube-controller-manager
- 所有
master节点
需要kube-controller-manager
1.7.0、创建kube-controller-manager请求证书
k8s-01:~ # cd /opt/k8s/ssl/
k8s-01:/opt/k8s/ssl # cat > kube-controller-manager-csr.json <<EOF
{"CN": "system:kube-controller-manager","key": {"algo": "rsa","size": 2048},"hosts": ["127.0.0.1","192.168.72.39","192.168.72.40","192.168.72.41"],"names": [{"C": "CN","ST": "ShangHai","L": "ShangHai","O": "system:kube-controller-manager","OU": "bandian"}]
}
EOF
1.7.1、生成kube-controller-manager证书和私钥
k8s-01:/opt/k8s/ssl # cfssl gencert -ca=/opt/k8s/ssl/ca.pem \
-ca-key=/opt/k8s/ssl/ca-key.pem \
-config=/opt/k8s/ssl/ca-config.json \
-profile=kubernetes kube-controller-manager-csr.json | cfssljson -bare kube-controller-manager
1.7.2、创建kube-controller-manager的kubeconfig文件
k8s-01:~ # cd /opt/k8s/ssl/
k8s-01:/opt/k8s/ssl # source /opt/k8s/bin/k8s-env.sh
"设置集群参数"
k8s-01:/opt/k8s/ssl # kubectl config set-cluster kubernetes \
--certificate-authority=/opt/k8s/ssl/ca.pem \
--embed-certs=true \
--server=${KUBE_APISERVER} \
--kubeconfig=kube-controller-manager.kubeconfig
"设置客户端认证参数"
k8s-01:/opt/k8s/ssl # kubectl config set-credentials system:kube-controller-manager \
--client-certificate=kube-controller-manager.pem \
--client-key=kube-controller-manager-key.pem \
--embed-certs=true \
--kubeconfig=kube-controller-manager.kubeconfig
"设置上下文参数"
k8s-01:/opt/k8s/ssl # kubectl config set-context system:kube-controller-manager \
--cluster=kubernetes \
--user=system:kube-controller-manager \
--kubeconfig=kube-controller-manager.kubeconfig
"设置默认上下文"
k8s-01:/opt/k8s/ssl # kubectl config use-context system:kube-controller-manager --kubeconfig=kube-controller-manager.kubeconfig
1.7.3、配置kube-controller-manager为systemctl启动
k8s-01:~ # cd /opt/k8s/conf/
k8s-01:/opt/k8s/conf # source /opt/k8s/bin/k8s-env.sh
k8s-01:/opt/k8s/conf # cat > kube-controller-manager.service <<EOF
[Unit]
Description=Kubernetes Controller Manager
Documentation=https://github.com/GoogleCloudPlatform/kubernetes[Service]
WorkingDirectory=${K8S_DIR}/kube-controller-manager
ExecStart=/opt/k8s/bin/kube-controller-manager \\--v=2 \\--cluster-name=kubernetes \\--profiling \\--logtostderr=true \\--leader-elect=true \\--bind-address=0.0.0.0 \\--allocate-node-cidrs=true \\--cluster-cidr=${CLUSTER_CIDR} \\--service-cluster-ip-range=${SERVICE_CIDR} \\--cluster-signing-cert-file=/etc/kubernetes/cert/ca.pem \\--cluster-signing-key-file=/etc/kubernetes/cert/ca-key.pem \\--root-ca-file=/etc/kubernetes/cert/ca.pem \\--service-account-private-key-file=/etc/kubernetes/cert/ca-key.pem \\--experimental-cluster-signing-duration=87600h0m0s \\--kubeconfig=/etc/kubernetes/cert/kube-controller-manager.kubeconfig \\--requestheader-allowed-names \\--requestheader-client-ca-file=/etc/kubernetes/cert/ca.pem \\--requestheader-extra-headers-prefix="X-Remote-Extra-" \\--requestheader-group-headers=X-Remote-Group \\--requestheader-username-headers=X-Remote-User \\--authorization-kubeconfig=/etc/kubernetes/cert/kube-controller-manager.kubeconfig \\--controllers=*,bootstrapsigner,tokencleaner \\--use-service-account-credentials=true
Restart=on-failure
RestartSec=5[Install]
WantedBy=multi-user.target
EOF
--controllers=*,bootstrapsigner,tokencleaner
启用的控制器列表,tokencleaner 用于自动清理过期的 Bootstrap token--profiling
开启profilling,通过web接口host:port/debug/pprof/分析性能--experimental-cluster-signing-duration
指定 TLS Bootstrap 证书的有效期--root-ca-file
放置到容器 ServiceAccount 中的 CA 证书,用来对 kube-apiserver 的证书进行校验--service-cluster-ip-range
指定 Service Cluster IP 网段,必须和 kube-apiserver 中的同名参数一致--leader-elect=true
集群运行模式,启用选举功能被选为 leader 的节点负责处理工作,其它节点为阻塞状态
1.7.4、分发kube-controller-manager证书和文件到其他节点
#!/usr/bin/env bash
source /opt/k8s/bin/k8s-env.shfor host in ${MASTER_IPS[@]}
doprintf "\e[1;34m${host}\e[0m\n"scp /opt/k8s/conf/kube-controller-manager.service \${host}:/etc/systemd/system/kube-controller-manager.servicescp /opt/k8s/ssl/{kube-controller-manager*.pem,kube-controller-manager.kubeconfig} \${host}:/etc/kubernetes/cert/
done
1.7.5、启动kube-controller-manager服务
#!/usr/bin/env bash
source /opt/k8s/bin/k8s-env.shfor host in ${MASTER_IPS[@]}
doprintf "\e[1;34m${host}\e[0m\n"ssh root@${host} "mkdir -p ${K8S_DIR}/kube-controller-manager"ssh root@${host} "systemctl daemon-reload && \systemctl enable kube-controller-manager --now && \systemctl status kube-controller-manager | grep Active"
done
1.7.6、查看kube-controller-manager端口
k8s-01:~ # ss -nltp | grep kube-contro
LISTEN 0 128 :::10252 :::* users:(("kube-controller",pid=65221,fd=7))
LISTEN 0 128 :::10257 :::* users:(("kube-controller",pid=65221,fd=8))
1.7.7、查看当前的leader
k8s-01:~ # kubectl get endpoints kube-controller-manager --namespace=kube-system -o yaml
apiVersion: v1
kind: Endpoints
metadata:annotations:control-plane.alpha.kubernetes.io/leader: '{"holderIdentity":"k8s-01_d04c6ed1-5048-4fe2-aaee-ed3043b24e6b","leaseDurationSeconds":15,"acquireTime":"2021-02-12T16:52:57Z","renewTime":"2021-02-12T16:53:07Z","leaderTransitions":0}'creationTimestamp: "2021-02-12T16:52:57Z"managedFields:- apiVersion: v1fieldsType: FieldsV1fieldsV1:f:metadata:f:annotations:.: {}f:control-plane.alpha.kubernetes.io/leader: {}manager: kube-controller-manageroperation: Updatetime: "2021-02-12T16:52:57Z"name: kube-controller-managernamespace: kube-systemresourceVersion: "355"selfLink: /api/v1/namespaces/kube-system/endpoints/kube-controller-manageruid: fc7f643d-a71f-4a58-b66c-2edcacbda693
这篇关于suse 12 二进制部署 Kubernetets 1.19.7 - 第07章 - 部署kube-controller-manager组件的文章就介绍到这儿,希望我们推荐的文章对编程师们有所帮助!