[Unit]
Description=PostgreSQL Database Server
Documentation=man:postgres(1)
After=network.target
After=syslog.target

[Service]
Type=notify
User=postgres
Group=postgres

Environment=PGDATA=/var/lib/postgresql/data

ExecStartPre=/usr/bin/postgresql-check-db-dir ${PGDATA}
ExecStart=/usr/bin/postgres -D ${PGDATA}
ExecReload=/bin/kill -HUP $MAINPID

KillMode=mixed
KillSignal=SIGINT

TimeoutSec=infinity

[Install]
WantedBy=multi-user.target