Rancher cluster service start to mount rbd memory error troubleshooting

After rook-ceph cluster deployment is complete, the new host discovers all nodes can not be mounted container storage space:

Rancher platform launch container error display:

Deployment does not have minimum availability

Solution is as follows:

I rke deployment k8s cluster, you need to modify rke cluster.yaml file, the plugin directory into the container, add the following:

  kubelet:
    extra_args:
      cgroup-driver: 'systemd'
  kubelet:
    extra_args:
      volume-plugin-dir: /usr/libexec/kubernetes/kubelet-plugins/volume/exec
    extra_binds:
      - /usr/libexec/kubernetes/kubelet-plugins/volume/exec:/usr/libexec/kubernetes/kubelet-plugins/volume/exec

Update the cluster configuration

cd /etc/rke/

[root@cnvs-kubm-101-103 rke]# ll
total 10716
-rw-r----- 1 root root   121688 Sep  4 11:09 cluster.rkestate
-rw-r--r-- 1 root root     1567 Sep  4 11:00 cluster.yml
-rw-r----- 1 root root     5431 Sep  4 11:08 kube_config_cluster.yml

#执行
 rke up

After the cluster upgrade is complete, re-establishment of storage space, the service can start again normally mounted disk.

Reference documents:

https://github.com/rook/rook/blob/master/Documentation/flexvolume.md