使用kubeadm部署k8s集羣07-擴容kube-scheduler到3節點

使用kubeadm部署k8s集羣07-擴容kube-scheduler到3節點

2018/1/4

擴容 kube-scheduler 到 3 節點

• 鏈接到本節點的 apiserver

  [root@tvm-00 kube-controller-manager]# cat /etc/kubernetes/manifests/kube-scheduler.yaml |grep '/etc/kubernetes'

• --kubeconfig=/etc/kubernetes/scheduler.conf
• mountPath: /etc/kubernetes/scheduler.conf
  path: /etc/kubernetes/scheduler.conf

顯然，咱們須要 2 個配置文件：
/etc/kubernetes/scheduler.conf
/etc/kubernetes/manifests/kube-scheduler.yaml

查看文件內容發現，只有一個配置須要更改 IP 地址指向對應的 apiserver 地址：
/etc/kubernetes/scheduler.conf

[root@tvm-00 ~]# mkdir ~/k8s_install/master/kube-scheduler
[root@tvm-00 ~]# cd !$

修改配置：

[root@tvm-00 kube-scheduler]# cp -a /etc/kubernetes/scheduler.conf tvm-01.scheduler.conf
[root@tvm-00 kube-scheduler]# sed -i 's#10.10.9.67:6443#10.10.9.68:6443#' tvm-01.scheduler.conf

同步配置到目標節點來啓動服務：

[root@tvm-00 kube-scheduler]# scp tvm-01.scheduler.conf 10.10.9.68:/etc/kubernetes/scheduler.conf
[root@tvm-00 kube-scheduler]# scp /etc/kubernetes/manifests/kube-scheduler.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-scheduler-tvm'
[root@tvm-00 ~]# kubectl logs --tail=20 -n kube-system kube-scheduler-tvm-01

在另外一個節點操做：

修改配置：

[root@tvm-00 kube-scheduler]# cp -a /etc/kubernetes/scheduler.conf tvm-02.scheduler.conf
[root@tvm-00 kube-scheduler]# sed -i 's#10.10.9.67:6443#10.10.9.69:6443#' tvm-02.scheduler.conf

同步配置到目標節點來啓動服務：

[root@tvm-00 kube-scheduler]# scp tvm-02.scheduler.conf 10.10.9.69:/etc/kubernetes/scheduler.conf
[root@tvm-00 kube-scheduler]# scp /etc/kubernetes/manifests/kube-scheduler.yaml 10.10.9.69:/etc/kubernetes/manifests/