systemctl status 显示供应商预设：禁用

Question

有人可以澄清一下“供应商预设：禁用”是什么意思吗？在 RHEL7 中启用包后，此选项可见。

Answer 1

如果您看到供应商预设：已禁用，则表示该服务首次安装时将在启动时禁用，必须手动启动。如果您希望服务在启动时自动启动，只需使用 更改它的启动设置systemctl enable <service>，例如：systemctl enable httpd。

可以在RHEL systemctl 文档或systemctl 手册页本身找到详细说明

? httpd.service - The Apache HTTP Server
   Loaded: loaded (/usr/lib/systemd/system/httpd.service; enabled; vendor preset: disabled)
   Active: active (running) since Mon 2018-09-10 09:29:16 MDT; 1h 3min ago
     Docs: man:httpd(8)
           man:apachectl(8)
  Process: 6917 ExecReload=/usr/sbin/httpd $OPTIONS -k graceful (code=exited, status=0/SUCCESS)
 Main PID: 1261 (httpd)
   Status: "Total requests: 0; Current requests/sec: 0; Current traffic:   0 B/sec"
   CGroup: /system.slice/httpd.service
           ??1261 /usr/sbin/httpd -DFOREGROUND
           ??6936 /usr/sbin/httpd -DFOREGROUND
           ??6937 /usr/sbin/httpd -DFOREGROUND
           ??6938 /usr/sbin/httpd -DFOREGROUND
           ??6939 /usr/sbin/httpd -DFOREGROUND
           ??6940 /usr/sbin/httpd -DFOREGROUND

Sep 10 09:28:51 localhost systemd[1]: Starting The Apache HTTP Server...
Sep 10 09:29:16 localhost systemd[1]: Started The Apache HTTP Server.
Sep 10 10:21:02 localhost systemd[1]: Reloaded The Apache HTTP Server.