Make user services that are persistent

README.md

@@ -0,0 +1,14 @@
+# Minecraft server on AWS EC2 instance
+
+## Installing
+
+Install systemd services
+```
+mkdir -p /home/ubuntu/.config/systemd/user
+ln -s /home/ubuntu/minecraft/services/set_initial_ttl.service /home/ubuntu/.config/systemd/user/set_initial_ttl.service
+ln -s /home/ubuntu/minecraft/services/ensure_running.service /home/ubuntu/.config/systemd/user/ensure_running.service
+
+systemctl --user enable set_initial_ttl
+systemctl --user enable ensure_running
+loginctl show-user ubuntu --property Linger
+```

ensure_running.sh

@@ -1,4 +1,4 @@
 #!/bin/bash
 
-cd servers/kincls
+cd /home/ubuntu/minecraft/servers/kincls
 tmux new-session -Ad -s "minecraft kincls server" "java -Xmx1024M -Xms1024M -jar server.jar nogui"

services/ensure_running.service

@@ -1,9 +1,11 @@
 [Unit]
 Description=Launch minecraft server
+After=network-online.target
 
 [Service]
 Type=oneshot
+RemainAfterExit=yes
 ExecStart=/home/ubuntu/minecraft/ensure_running.sh
 
 [Install]
-WantedBy=multi-user.target
+WantedBy=default.target

services/set_initial_ttl.service

@@ -6,4 +6,4 @@ Type=oneshot
 ExecStart=/bin/sh -c 'date -d "+1 hour" > /home/ubuntu/minecraft/live_until.txt'
 
 [Install]
-WantedBy=multi-user.target
+WantedBy=default.target