I'm looking for best practices regardin backup and restore when the HA is activated.
My main concern is if the backups are interchangeable or not, if there is a backup done on the Master node, can be used to recover a slave node? Are the backups independant in terms of HA roles?
The main issue is to have a clear picture on how to manage backups in case of failover during an extended period of time (more than one day).
Thanks in advance,
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From what I understand.. Master <> Slave = same CDB/packages/etc. They should completely mirror each other (maybe except the underlying server/os).
I don't necessarily know what you mean if a backup is done on master, that it can recover a slave node? If the Master is down, the Slave will become the Master and it will have the same CDB as the master after the fail-over. Since Master/Slave are generally mirroring each other, I wouldn't believe it'd be necessary for a backup/restore for the Slave (but now master) to utilize a restore.
Let me know if you need more assistance. To me, it's not generally clear on what you are asking since i'd expect Slave to be the new master as the previous master failed. When fail-over occurs, Masters CDB is in sync with the slave, so slave would currently have everything that the master has.
Hi, thanks for the answer!
The use case, is as follows:
We are thinking to take backups on both nodes (Master and Slave) periodically, but we don't know what are the limitations/dependencies of those backups, ie, in case of total disaster, the recovery can be done using any of the backups (Master or Slave) or the backups are role/vm dependant.
Thanks in advance,
Sorry, late to this thread.
A couple points on NSO HA and tailf-hcc package operation some alluded to in the responses here, but just to recap:
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