[Unit]
Description=PostgreSQL 11 database server
Documentation=man:postgres(1)
After=network-online.target
Wants=network-online.target

[Service]
Type=notify
User=postgres
EnvironmentFile=-/etc/default/postgresql11
ExecStart=/usr/lib/pgsql/11/bin/postgres -D $POSTGRESQL_DATADIR
ExecReload=/bin/kill -HUP $MAINPID
KillMode=mixed
KillSignal=SIGINT
TimeoutSec=infinity

[Install]
WantedBy=multi-user.target