40 lines
1.1 KiB
Nix
40 lines
1.1 KiB
Nix
{ pkgs, config, ... }: {
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services = {
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postgresql = {
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enable = true;
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package = pkgs.postgresql_14;
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};
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postgresqlBackup = {
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enable = true;
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};
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};
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# Postgres upgrades: https://nixos.org/manual/nixos/stable/index.html#module-services-postgres-upgrading
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environment.systemPackages = [
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(pkgs.writeScriptBin "upgrade-pg-cluster" ''
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set -eux
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# XXX it's perhaps advisable to stop all services that depend on postgresql
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systemctl stop postgresql
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# XXX replace `<new version>` with the psqlSchema here
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export NEWDATA="/var/lib/postgresql/14"
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# XXX specify the postgresql package you'd like to upgrade to
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export NEWBIN="${pkgs.postgresql_14}/bin"
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export OLDDATA="${config.services.postgresql.dataDir}"
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export OLDBIN="${config.services.postgresql.package}/bin"
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install -d -m 0700 -o postgres -g postgres "$NEWDATA"
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cd "$NEWDATA"
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sudo -u postgres $NEWBIN/initdb -D "$NEWDATA"
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sudo -u postgres $NEWBIN/pg_upgrade \
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--old-datadir "$OLDDATA" --new-datadir "$NEWDATA" \
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--old-bindir $OLDBIN --new-bindir $NEWBIN \
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"$@"
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'')
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];
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}
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