[Unit]
Description=Upgrade PostgreSQL database cluster
Before=postgresql.service
Before=systemd-update-done.service
After=local-fs.target
RequiresMountsFor=/var/lib/pgsql
DefaultDependencies=no
ConditionNeedsUpdate=/var

[Service]
Type=oneshot
User=postgres
ExecStart=+/usr/local/libexec/postgresql-upgrade
Environment=PG_COLOR=always
WorkingDirectory=~

[Install]
RequiredBy=postgresql.service