Communications Manager Recovery and Database verification

We had some issue with CM server and we were getting file system related errors, did communications Manager Recovery - steps are given below

1- Download the correct recovery ISO according to CUCM version then burn the .ISO image to a CD and create a bootable recovery disk. If its a Virtual machine Copy the ISO to VM data store. and make following changes

 

default settings

 

Click on  CD/DVD drive and select Datastore ISO file , then browse the file->Press Ok

2- Boot the server from the recovery disk, once the system boot from recovery media  it shows recovery options

3-Press the ’ f ‘ to start the file system check and then press Enter key to continue.

4-Finally, choose option Q to exit the recovery disk program.Remove the recovery disk and reboot the server. The system should boot normally.


  Database verification  

Checks following services are running (started) on the servers; execute “utils service list” command to verify services.

-          Cisco Database Layer Monitor

-          A Cisco DB

-          A Cisco DB Replicator

-          Cluster Manager

Check the network, hostname, related things on each server:

-          utils network connectivity

-          utils ntp status

-          show network cluster

-          show tech network hosts 

-          utils diagnose module validate_network

If the Database replication status is not ‘Good’ perform following:

-          utils dbreplication stop  (first on SUBS then on PUB)

-          utils dbreplication reset all (on PUB – it may take a couple of hours depends on the db size)

-          utils dbreplication runtimestate (verify the status).