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nixos: services: postgres: simplify update script

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This commit is contained in:
Bruno BELANYI 2024-05-07 11:10:29 +00:00
parent 6162f4f4d5
commit 48beb9f1fe
1 changed files with 18 additions and 9 deletions
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27
modules/nixos/services/postgresql/default.nix
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@ -27,17 +27,26 @@ in
environment.systemPackages =
let
newpg = config.containers.temp-pg.config.services.postgresql;
pgCfg = config.services.postgresql;
newPackage' = pkgs.postgresql_13;
oldPackage = if pgCfg.enableJIT then pgCfg.package.withJIT else pgCfg.package;
oldData = pgCfg.dataDir;
oldBin = "${if pgCfg.extraPlugins == [] then oldPackage else oldPackage.withPackages pgCfg.extraPlugins}/bin";
newPackage = if pgCfg.enableJIT then newPackage'.withJIT else newPackage';
newData = "/var/lib/postgresql/${newPackage.psqlSchema}";
newBin = "${if pgCfg.extraPlugins == [] then newPackage else newPackage.withPackages pgCfg.extraPlugins}/bin";
in
[
(pkgs.writeScriptBin "upgrade-pg-cluster" ''
#!/usr/bin/env bash
set -x
export OLDDATA="${config.services.postgresql.dataDir}"
export NEWDATA="${newpg.dataDir}"
export OLDBIN="${config.services.postgresql.package}/bin"
export NEWBIN="${newpg.package}/bin"
set -eux
export OLDDATA="${oldData}"
export NEWDATA="${newData}"
export OLDBIN="${oldBin}"
export NEWBIN="${newBin}"
if [ "$OLDDATA" -ef "$NEWDATA" ]; then
echo "Cannot migrate to same data directory" >&2
@ -46,13 +55,13 @@ in
install -d -m 0700 -o postgres -g postgres "$NEWDATA"
cd "$NEWDATA"
sudo -u postgres $NEWBIN/initdb -D "$NEWDATA"
sudo -u postgres "$NEWBIN/initdb" -D "$NEWDATA"
systemctl stop postgresql # old one
sudo -u postgres $NEWBIN/pg_upgrade \
sudo -u postgres "$NEWBIN/pg_upgrade" \
--old-datadir "$OLDDATA" --new-datadir "$NEWDATA" \
--old-bindir $OLDBIN --new-bindir $NEWBIN \
--old-bindir "$OLDBIN" --new-bindir "$NEWBIN" \
"$@"
'')
];