使用kubeadm部署k8s集羣06-擴容kube-controller-manager到3節點
2018/1/3
擴容 kube-controller-manager 到 3 節點
- 連接到本節點的 apiserver
[root@tvm-00 ~]# cat /etc/kubernetes/manifests/kube-controller-manager.yaml |grep '/etc/kubernetes' - --kubeconfig=/etc/kubernetes/controller-manager.conf
- --root-ca-file=/etc/kubernetes/pki/ca.crt
- --service-account-private-key-file=/etc/kubernetes/pki/sa.key
- --cluster-signing-cert-file=/etc/kubernetes/pki/ca.crt
- --cluster-signing-key-file=/etc/kubernetes/pki/ca.key
- mountPath: /etc/kubernetes/pki
- mountPath: /etc/kubernetes/controller-manager.conf
path: /etc/kubernetes/pki
path: /etc/kubernetes/controller-manager.conf
顯然，我們需要 2 個配置文件：
/etc/kubernetes/controller-manager.conf
/etc/kubernetes/manifests/kube-controller-manager.yaml
查看文件內容發現，只有一個配置需要更改 IP 地址指向對應的 apiserver 地址：
/etc/kubernetes/controller-manager.conf
[root@tvm-00 ~]# mkdir ~/k8s_install/master/kube-controller-manager
[root@tvm-00 ~]# cd !$
修改配置：
[root@tvm-00 kube-controller-manager]# cp -a /etc/kubernetes/controller-manager.conf tvm-01.controller-manager.conf
[root@tvm-00 kube-controller-manager]# sed -i 's#10.10.9.67:6443#10.10.9.68:6443#' tvm-01.controller-manager.conf
同步配置到目標節點來啓動服務：
[root@tvm-00 kube-controller-manager]# scp tvm-01.controller-manager.conf 10.10.9.68:/etc/kubernetes/controller-manager.conf
[root@tvm-00 kube-controller-manager]# scp /etc/kubernetes/manifests/kube-controller-manager.yaml 10.10.9.68:/etc/kubernetes/manifests/
檢查是否有異常：
[root@tvm-00 ~]# kubectl get pods --all-namespaces |grep 'kube-controller-manager-tvm'
[root@tvm-00 ~]# kubectl logs --tail=20 -n kube-system kube-controller-manager-tvm-01
在另一個節點操作：
修改配置：
[root@tvm-00 kube-controller-manager]# cp -a /etc/kubernetes/controller-manager.conf tvm-02.controller-manager.conf
[root@tvm-00 kube-controller-manager]# sed -i 's#10.10.9.67:6443#10.10.9.69:6443#' tvm-02.controller-manager.conf
同步配置到目標節點來啓動服務：
[root@tvm-00 kube-controller-manager]# scp tvm-02.controller-manager.conf 10.10.9.69:/etc/kubernetes/controller-manager.conf
[root@tvm-00 kube-controller-manager]# scp /etc/kubernetes/manifests/kube-controller-manager.yaml 10.10.9.69:/etc/kubernetes/manifests/