I need to close all existing connections and the prevent people/processes from
connecting again until the restore has completed.
I was hoping there was a command in psql that would do both, that is, kick the exisiting connections and stop new ones. It was being a bit optimistic I think, but such a command would be really useful, IMHO.
Modifying pg_hba.conf, is a little complicated. The daemons are using the db owner's credential and the backups are on a different server so I still need to be able to connect to do the restore.
I guess I will need something like
local mydb all reject
host mydb postgres 0.0.0.0/0 password
host mydb postgres ::0/0 password
host mydb all 0.0.0.0/0 reject
host mydb all ::0/0 reject
then systemctl reload postgresql-10
then from the server with the backup on it
pg_restore -h db-server -Upostgres -c -C -d mydb mydb-backup
Modifying pg_hba isnt going to kick the existing connections, so I will need to do that either using psql and the commands in the article Rob posted, (I think I have used that method somewhere already). or kill them on the DB server
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