NixOS-Config/nixos/package-configs/postgres/upgrade.nix

37 lines
1 KiB
Nix

{
config,
pkgs,
...
}: {
environment.systemPackages = [
(let
# XXX specify the postgresql package you'd like to upgrade to.
# Do not forget to list the extensions you need.
newPostgres = pkgs.postgresql_16.withPackages (pp: [
# pp.plv8
]);
in
pkgs.writeScriptBin "upgrade-pg-cluster" ''
set -eux
# XXX it's perhaps advisable to stop all services that depend on postgresql
systemctl stop postgresql
export NEWDATA="/var/lib/postgresql/${newPostgres.psqlSchema}"
export NEWBIN="${newPostgres}/bin"
export OLDDATA="${config.services.postgresql.dataDir}"
export OLDBIN="${config.services.postgresql.package}/bin"
install -d -m 0700 -o postgres -g postgres "$NEWDATA"
cd "$NEWDATA"
sudo -u postgres $NEWBIN/initdb -D "$NEWDATA"
sudo -u postgres $NEWBIN/pg_upgrade \
--old-datadir "$OLDDATA" --new-datadir "$NEWDATA" \
--old-bindir $OLDBIN --new-bindir $NEWBIN \
"$@"
'')
];
}