以 root 以外的系統使用者身份在 CentOS 上執行服務

我已經創建了一個系統使用者jackett( useradd -r jackett) 並且我試圖在 CentOS 7 上執行一個 systemd 服務。

服務文件：

[Unit]
Description=Jackett Daemon
After=network-online.target

[Service]
Type=simple
user=jackett
group=jackett
ExecStart=/usr/bin/mono --debug /opt/Jackett/JackettConsole.exe --NoRestart

[Install]
WantedBy=multi-user.target

服務狀態：

[root@server Jackett]# systemctl status jackett
● jackett.service - Jackett Daemon
  Loaded: loaded (/usr/lib/systemd/system/jackett.service; enabled; vendor preset: disabled)
  Active: active (running) since Sat 2019-02-23 23:42:23 +03; 11min ago
Main PID: 24735 (mono)
  CGroup: /system.slice/jackett.service
          └─24735 /usr/bin/mono --debug /opt/Jackett/JackettConsole.exe --NoRestart

Feb 23 23:42:24 server mono[24735]: 02-23 23:42:24 Info Loading Cardigann definition /opt/Jackett/Definitions/yourexotic.yml
Feb 23 23:42:24 server mono[24735]: 02-23 23:42:24 Info Loading Cardigann definition /opt/Jackett/Definitions/zamundanet.yml
Feb 23 23:42:24 server mono[24735]: 02-23 23:42:24 Info Loading Cardigann definition /opt/Jackett/Definitions/zelkaorg.yml
Feb 23 23:42:24 server mono[24735]: 02-23 23:42:24 Info Loading Cardigann definition /opt/Jackett/Definitions/zooqle.yml
Feb 23 23:42:24 server mono[24735]: 02-23 23:42:24 Info Loading Cardigann definition /opt/Jackett/Definitions/ztracker.yml
Feb 23 23:42:24 server mono[24735]: 02-23 23:42:24 Info Adding aggregate indexer
Feb 23 23:42:25 server mono[24735]: Hosting environment: Production
Feb 23 23:42:25 server mono[24735]: Content root path: /opt/Jackett/Content
Feb 23 23:42:25 server mono[24735]: Now listening on: http://[::]:9117
Feb 23 23:42:25 server mono[24735]: Application started. Press Ctrl+C to shut down.

htop 顯示在根目錄下執行的程序

問題顯然是 systemd 對 case:User而不是user：

[Unit]
Description=Jackett Daemon
After=network-online.target

[Service]
Type=simple
User=jackett
Group=jackett
ExecStart=/usr/bin/mono --debug /opt/Jackett/JackettConsole.exe --NoRestart

[Install]
WantedBy=multi-user.target

參考：

• systemd.exec——執行環境配置——使用者和組

引用自：https://unix.stackexchange.com/questions/502574