We recently installed New Management servers using SCOM 2019.
Below event id's were are receiving on management servers.
OpsMgr was unable to set up a communications channel to XXXX.XXXX.com(SCOM Management server) and there are no failover hosts. Communication will resume when XXXX.XXXX.com is available and communication from this computer is allowed.
The OpsMgr Connector could not connect to XXXX.XXXX.com:5723. The error code is 10060L(A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.). Please verify there is network connectivity, the server is running and has registered it's listening port, and there are no firewalls blocking traffic to the destination.
OpsMgr's configuration may be out-of-date for management group XXXX_MG, and has requested updated configuration from the Configuration Service. The current(out-of-date) state cookie is "5853ca63bca72be91d957711644c0b07,803765a1d17f47a58b1f7cc534c552fc:00006148"
Event ID: 10801
Discovery data couldn't be inserted to the database. This could have happened because of one of the following reasons:
Discovery data is stale. The discovery data is generated by an MP recently deleted.
Database connectivity problems or database running out of space.
Discovery data received is not valid.
Please assist us in resolving these issues.