We recently had HW problem on our Publisher. After that we had to replace the HDD of the publisher node and now we have to do Restore from backup.
We installed a fresh copy of CUCM 7.0.2 and tried to restore the backup "offline" (connected only a laptop to the server for SFTP). The restore procedure failed and I have attached the log.
Now we need some clarification about the restore procedure:
1. Does the restore need to be done "online" in the working LAN where the current Subscriber is or we can do it "offline" (without connectivity to DNS, NTP and GW).
2. Is there a possibility when we connect the newly installed server in the "online" environment (because it has the same IP, hostname and DB repl. password) a synchronization to occur between this new publisher and the old subs.
3. Can we do a restore only to the publisher server and not on all other subs.
2. If you mean: If we connect a fresh installed box to the network with the settings of the pub, will it sync to/from the subs ? No. The pub will only sync with subs it knows about. As, at this stage, it knows about no subs, it will sync with no one. (CUCM DB Replication is master/slave type replication, not a multi-master system)
3. Yes, you can. Once you've restored the pub and rebooted, you then need to reboot the subs. After this reboot, the subs will re-download their local copy of the DB from the master. Subs only have a read-only copy of the DB. The pub is where all writes to the DB occur.
4. No. Configure nothing, and just do the restore.
When you perfrom a restore in a cluster you need to perform the restore on all the servers in the cluster starting from the first node, the publisher.
Before you restore a cluster, make sure that all nodes in the cluster are up and communicating with the first node. You must carry out a fresh install for the nodes that are down or not communicating with first node at the time of the restore.
When you perform your restore, you select the first node first. Once this is complete you then perform a restore on the subsequent nodes. Here is the DRS guide and the detailed procedure
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