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Systemd 同时运行 ExecStart 和 ExecStop

tag-icon • tag-icon systemd minecraft
Systemd 同时运行 ExecStart 和 ExecStop

我正在尝试使用 systemd 运行 minecraft 服务器，但它不起作用。这是一个简单的测试文件，为简单起见，仅替换了“execstart”和“execstop”位。

root@Paidia:~# systemctl start test@one
root@Paidia:~# systemctl status test@one
● [email protected] - Test one
   Loaded: loaded (/etc/systemd/system/[email protected]; disabled; vendor preset: enabled)
   Active: inactive (dead)

Oct 31 23:03:21 Paidia echo[398]: I started
Oct 31 23:03:21 Paidia echo[399]: I stopped
Oct 31 23:03:21 Paidia systemd[1]: Started Test one.
root@Paidia:~# cat /etc/systemd/system/test\@.service 
[Unit]
Description=Test %i

[Service]
Type=forking
ExecStart=/bin/echo "I started"
ExecStop=/bin/echo "I stopped"

[Install]
WantedBy=multi-user.target

使用实际代码进行编辑

root@Paidia:~# cat /etc/systemd/system/minecraft\@.service 
[Unit]
Description=Minecraft Server %i

[Service]
WorkingDirectory=/opt/minecraft-%i
User=minecraft
Type=forking

ExecStart=/usr/bin/screen -DmS mc-%i /bin/java -Xmx2048M -jar minecraft_server.jar nogui 

ExecStop=/usr/bin/screen -p 0 -S mc-%i -X eval 'stuff "say SERVER SHUTTING DOWN. Saving map..."\\015'
ExecStop=/usr/bin/screen -p 0 -S mc-%i -X eval 'stuff "save-all"\\015'
ExecStop=/usr/bin/screen -p 0 -S mc-%i -X eval 'stuff "stop"\\015'
ExecStop=/bin/sleep 2

[Install]
WantedBy=multi-user.target
root@Paidia:~# systemctl start minecraft@survival
Job for [email protected] failed because the control process exited with error code. See "systemctl status [email protected]" and "journalctl -xe" for details.
root@Paidia:~# systemctl status minecraft@survival
● [email protected] - Minecraft Server survival
   Loaded: loaded (/etc/systemd/system/[email protected]; disabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Wed 2017-11-01 01:32:44 UTC; 8s ago
  Process: 422 ExecStop=/usr/bin/screen -p 0 -S mc-%i -X eval stuff "say SERVER SHUTTING DOWN. Saving map..."\015 (code=exited, status=1/FAILURE)
  Process: 420 ExecStart=/usr/bin/screen -DmS mc-%i /bin/java -Xmx2048M -jar minecraft_server.jar nogui (code=exited, status=0/SUCCESS)

Nov 01 01:32:43 Paidia systemd[1]: Starting Minecraft Server survival...
Nov 01 01:32:44 Paidia systemd[1]: [email protected]: Control process exited, code=exited status=1
Nov 01 01:32:44 Paidia systemd[1]: Failed to start Minecraft Server survival.
Nov 01 01:32:44 Paidia systemd[1]: [email protected]: Unit entered failed state.
Nov 01 01:32:44 Paidia systemd[1]: [email protected]: Failed with result 'exit-code'.
root@Paidia:~# journalctl -u minecraft@survival
-- Logs begin at Wed 2017-11-01 01:32:10 UTC, end at Wed 2017-11-01 01:32:44 UTC. --
Nov 01 01:32:43 Paidia systemd[1]: Starting Minecraft Server survival...
Nov 01 01:32:44 Paidia systemd[1]: [email protected]: Control process exited, code=exited status=1
Nov 01 01:32:44 Paidia systemd[1]: Failed to start Minecraft Server survival.
Nov 01 01:32:44 Paidia systemd[1]: [email protected]: Unit entered failed state.
Nov 01 01:32:44 Paidia systemd[1]: [email protected]: Failed with result 'exit-code'.

如您所见，它尝试同时执行“ExecStart”和“ExecStop”。

答案1

“控制进程已退出，代码=已退出状态=1”表示服务启动的主进程以状态 1 退出，没有任何幸存的分叉进程。由于您使用了screen -Dm，这意味着screen当命令退出时退出。-dm改为使用 保持screen活动状态，然后重新连接它以查看发生了什么。

答案2

我遇到了类似的问题，发现屏幕屏蔽了 Java 的错误代码。当我单独运行此命令时：/bin/java -Xmx2048M -jar minecraft_server.jar nogui 我收到一个错误，提示 minecraft 是由比我系统上安装的 Java Runtime 版本更新的版本编译的（60 vs 55）

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