Hey,
I have 2 db nodes(9.6) configured with streaming replication (+repmgr). Suddenly ysterday my secondary stopped syncing and I saw the following error in the log :
invalid record length at X/YYYYY: wanted 24, got
In addition, since then, the secondary db keeps restoring the same wal file (kinda stuck on restorying it).
I guess that the wal was missing some data / corrupted so I tried to copy it from the primary but it didnt help. In addition, I decided to start the secondary in read write but it failed with the following error :
LOG: invalid primary checkpoint record
LOG: invalid secondary checkpoint record
PANIC: could not locate a valid checkpoint record
LOG: startup process (PID 17096) was terminated by signal 6: Aborted
LOG: aborting startup due to startup process failure
LOG: database system is shut down
My next idea is using pg_resetxlog in order to start the secondary successfully and then use pg_rewind to sync it again with the master. The master is working perfectly and there arent any issues on it. Right now, I'm not interested in taking a basebackup and creating the secondary from scratch..
I will be happy to hear if u guys have any other ideas why it might happened and how I can handle it.
Thanks