My pve6.4 cluster is abnormal in communication between hosts due to network problems, and some hosts break down and restart. After the host is restarted, the virtual host is normal, but the cluster status changes to Standalone Node: Cluster not defined. But now I can also manage entire clusters and hosts and virtual machines from a single host。
After performing the following operations on the cluster, the cluster became an Independent Node with "Cluster not defined" status:

After performing the following operations on the cluster, the cluster became an Independent Node with "Cluster not defined" status:
- Due to a network outage that caused the host to restart, I restarted the entire cluster's hosts.
- Accidentally deleted the entire /etc/pve/node directory from one of the cluster nodes.
- On node1, regenerated the certificate using pvecm updatecerts -f.
- After generating the certificate, I restarted the entire cluster's hosts due to issues with the cluster status.
