Thanks @DavidTurner for your view. Could you please help me with second question about what all conf files?
one i understand may be /etc/elasticsearch, kibana,beats, logstash where we have configuration files. But do you think there are any other configuration files at OS level?
We can't really say which OS configuration you will need to copy. It depends very much on how you will provision new infrastructure during your restore process. The only way you can be sure that your backup process is capturing everything it needs is to regularly restore everything from backup.
@DavidTurner I understand this part. In general case let say OS is not crashed then just indices restore will help.
Let say in case, where Complete OS is crashed and I need to deploy fresh OS. in those cases config files would be handy else full reconfiguration should be done before restoring the indices backup.
Do we have any doc which covers such scenario?
@DavidTurner one more question i had one this part, since Elasticssearch snapshot backup is incremental, I can restore from any snapshot and will it have dependencies on older ones?
I am asking this because, in case i want to remove 30 days older snapshot, i should not loose the data.