This post is about the CLUSTER MEMBER status being abnormal. Please see below how to tackle this issue.
【Problem description】
The cluster status was offline.
【Problem analysis】
1. Checked the running status of the server. It was normal, while only the cluster status was abnormal.
2. Checked the relevant CMU logs.
3. Switched to a single node andre - switched to standby mode.
4. Checked the omu authentication information.
【Root cause】
The upper-level domain VCN was disconnected from the lower-level domain and failed to re-authenticate, thus causing the cluster status offline failure.
【Solution description】
Entered the database and modified the relevant configuration to reinitiate the authentication. After authentication has succeeded, it went online again.

