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migration: Add PostgreSQL server migration script 

This script captures the steps taken to migrate from the PostgreSQL
server in the Kubernetes cluster, managed by _postgres operator_, to the
dedicated server on _db0.pyrocufflink.blue_.  The data were restored
from the backups created by _wal-e_, and then the new server was
promoted to primary.  Finally, I cleaned up the roles and databases that
are no longer needed.
frigate-exporter
Dustin 2024-07-02 20:45:12 -05:00
parent 4f202c55e4
commit afb7030e44
1 changed files with 48 additions and 0 deletions
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migration/postgresql-db.sh Normal file
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#!/bin/sh
server=db0.pyrocufflink.blue
sudo='sudo'
sudo_postgres='sudo -u postgres'
#server=root@db1.local
#sudo=''
#sudo_postgres='runuser -u postgres --'
ssh ${server} ${sudo_postgres} pg_ctl promote -D /etc/postgresql -w -t 300
ssh ${server} ${sudo_postgres} psql <<EOF
ALTER USER "authelia.authelia" RENAME TO authelia;
ALTER USER "firefly-iii.firefly" RENAME TO firefly;
ALTER USER "home-assistant.homeassistant" RENAME TO homeassistant;
ALTER DATABASE authelia REFRESH COLLATION VERSION;
ALTER DATABASE firefly REFRESH COLLATION VERSION;
ALTER DATABASE homeassistant REFRESH COLLATION VERSION;
ALTER DATABASE postgres REFRESH COLLATION VERSION;
ALTER DATABASE template0 REFRESH COLLATION VERSION;
ALTER DATABASE template1 REFRESH COLLATION VERSION;
DROP DATABASE dustin;
DROP DATABASE wger;
DROP OWNED BY admin;
DROP OWNED BY cron_admin;
DROP OWNED BY robot_zmon;
\c authelia
DROP OWNED BY admin;
DROP OWNED BY robot_zmon;
\c firefly
DROP OWNED BY admin;
DROP OWNED BY robot_zmon;
\c homeassistant
DROP OWNED BY admin;
DROP OWNED BY robot_zmon;
\c template1
DROP OWNED BY admin;
DROP OWNED BY robot_zmon;
DROP ROLE admin;
DROP ROLE cron_admin;
DROP ROLE dustin;
DROP ROLE standby;
DROP ROLE "wger.wger";
DROP ROLE zalandos;
DROP ROLE robot_zmon;
EOF