for noobs? say hello for your data, and start a new empty server.
for users? say hello for your data. restart elastic with empty database.
for pros? start a new empty server, wait for replication or restore the database
If you ran out of space the elastic database will have problem.
The elasticsearch designed for distributed data sorage, so if you have a cluster a node loos won’t be a problem. But if you store all data on one node…
Maybe you can do some research about how can you fix, but I administrate only HA systems, so I didn’t do it. I just drop out the wrong server, and wait for recover.
Wait, are you saying Elastic simply cannot be saved after it has run out of disk space? Not even once? that would be very odd… Then again, you absolutely know a lot more about ES than I do
Onece I ran out of disk. After a restart elastic report a broken database, so I drop the elastic directory and wait for the replication, that was a test System. Now I monitor my systems better.
you can just use CURL commands for the ES to check which indices are broken, and delete those. If that works out, you can get away with only partial data loss.
Yikes, that’s a pretty scary prospect though. One would hope there are ways of restoring broken indices. Some people rely upon the data in ElasticSearch for auditing etc.