====== issues ======

===== invalid primary checkpoint record =====

After unclean shutdown:
<code>
user=,db=,app=,client= LOG:  invalid primary checkpoint record
user=,db=,app=,client= PANIC:  could not locate a valid checkpoint record
</code>

Postgresql running from official docker container.

**Solution:**

Prevent container from restarting:
<code bash>docker-compose stop db</code>
<file yaml docker-compose.yml>
services:
  db:
    image: postgres:12-alpine
    command: bash
</file>

run it interactively:
<code bash>docker-compose run db</code>

and reset WAL:

<code bash>
su postgres -c '/usr/local/bin/pg_resetwal -f /var/lib/postgresql/data'
</code>