Add systemd service and use it by default on systemd-enabled systems

debian/clickhouse-server-base.postinst

@@ -8,9 +8,13 @@ CLICKHOUSE_LOGDIR=/var/log/clickhouse-server
 
 
 if [ "$1" = configure ]; then
-
-    if [ -x "/etc/init.d/clickhouse-server" ]; then
-        update-rc.d clickhouse-server defaults 19 19 >/dev/null || exit $?
+    if [ -x "/bin/systemctl" ] && [ -f /etc/systemd/system/clickhouse-server.service ]; then
+        /bin/systemctl daemon-reload
+        /bin/systemctl enable clickhouse-server
+    else
+        if [ -x "/etc/init.d/clickhouse-server" ]; then
+            update-rc.d clickhouse-server defaults 19 19 >/dev/null || exit $?
+        fi
     fi
 
     # Make sure the administrative user exists

debian/clickhouse-server.service

@@ -0,0 +1,15 @@
+[Unit]
+Description=ClickHouse Server (analytics DBMs for big data)
+
+[Service]
+Type=simple
+User=clickhouse
+Group=clickhouse
+Restart=always
+RestartSec=30
+ExecStart=/usr/bin/clickhouse-server --config=/etc/clickhouse-server/config.xml
+LimitCORE=infinity
+LimitNOFILE=500000
+
+[Install]
+WantedBy=multi-user.target

debian/rules

@@ -77,6 +77,10 @@ override_dh_install:
 	# todo: remove after renaming package:
 	mkdir -p $(DESTDIR)/etc/init.d
 	cp debian/clickhouse-server.init $(DESTDIR)/etc/init.d/clickhouse-server
+	# systemd compatibility
+	mkdir -p $(DESTDIR)/etc/systemd/system/
+	cp debian/clickhouse-server.service $(DESTDIR)/etc/systemd/system/
+
 	mkdir -p $(DESTDIR)/etc/cron.d
 	cp debian/clickhouse-server.cron.d $(DESTDIR)/etc/cron.d/clickhouse-server