Manage Minecraft servers with systemd

roles/minecraft/templates/eula.txt.j2

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+eula={{ minecraft_eula | lower }}

roles/minecraft/templates/minecraft.service.j2

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+[Unit]
+Description=Minecraft Server
+After=network.target
+
+[Service]
+Type=simple
+WorkingDirectory={{ minecraft_home }}
+User={{ minecraft_user }}
+Group={{ minecraft_user }}
+Restart=always
+
+ExecStart=/usr/bin/screen -DmS minecraft \
+  /usr/bin/java -Xms{{ minecraft_xms }} -Xmx{{ minecraft_xmx }} -jar minecraft_server.jar nogui
+ExecReload=/usr/bin/screen -p 0 -S minecraft -X eval 'stuff "reload"\\015'
+ExecStop=/usr/bin/screen -p 0 -S minecraft -X eval 'stuff "say SERVER SHUTDOWN IN 30 SECONDS"\015'
+ExecStop=/bin/sleep 15
+ExecStop=/usr/bin/screen -p 0 -S minecraft -X eval 'stuff "say SERVER SHUTDOWN IN 15 SECONDS"\015'
+ExecStop=/bin/sleep 10
+ExecStop=/usr/bin/screen -p 0 -S minecraft -X eval 'stuff "say SERVER SHUTDOWN IN 5 SECONDS"\015'
+ExecStop=/bin/sleep 5
+ExecStop=/usr/bin/screen -p 0 -S minecraft -X eval 'stuff "save-all"\015'
+ExecStop=/bin/sleep 1
+ExecStop=/usr/bin/screen -p 0 -S minecraft -X eval 'stuff "stop"\015'
+ExecStop=/bin/sleep 3
+
+[Install]
+WantedBy=multi-user.target