32 lines
1 KiB
Nix
32 lines
1 KiB
Nix
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{ config, pkgs, ... }:
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{
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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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# TODO it's perhaps advisable to stop all services that depend on postgresql
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systemctl stop postgresql
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# TODO replace `<new version>` with the psqlSchema here
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# The schema can be found by running:
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# nix-instantiate '<nixpkgs>' --eval -A postgresql_14.psqlSchema
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export NEWDATA="/var/lib/postgresql/<new version>"
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# TODO 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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