Postgres version 11.
I’ve read this: https://www.postgresql.org/docs/11/app-pgbasebackup.html
But can’t really find what I’m looking for.
Performing a basebackup creates 2 files for me: base.tar.gz and pg_wal.tar.gz
base.tar.gz contains a file
Which contains something like:
START WAL LOCATION: 5CD/87000850 (file 00000001000005CD00000087) CHECKPOINT LOCATION: 5CD/882A2558 BACKUP METHOD: streamed BACKUP FROM: master START TIME: LABEL: pg_basebackup base backup START TIMELINE: 1
And pg_wal.tar.gz contains this:
00000001000005CD00000087 00000001000005CD00000088 00000001000005CD00000089 00000001000005CD0000008A 00000001000005CD0000008B ... 00000001000005CD000000AF
So, incremental files.
backup_label has a field
START WAL LOCATION which literally points to
00000001000005CD00000087, the first file in the
Then it has
CHECKPOINT LOCATION: 5CD/882A2558.
What is this "CHECKPOINT LOCATION"? I don’t see anything to correlate
882A2558 to. Or is that not intended?
Am I to interpret that as "The wal archives created while pg_basebackup was running are in pg_wal.tar.gz and they start at 5CD/87000850 and stop at 5CD/882A2558" ?
I’m just wondering: does pg_wal.tar.gz contain all the wal archives I need to do a successful restore? And if not, is there some other file that will provide me this info?
And if this is clearly written in the documentation, well I just read the entire page and didn’t recognize anything in there as the answer to my question? Did I miss it?