add cluster info logs

[w-zr]

What type of PR is this?

• [ ] API-change
• [ ] BUG
• [ ] Improvement
• [ ] Documentation
• [x] Feature
• [ ] Test and CI
• [ ] Code Refactoring

Which issue(s) this PR fixes:

issue #4096

What this PR does / why we need it:

Add logs to indicate MO working normally & node down.