centos7.9怎么查看logrotate服务是否开启

你可以使用以下命令来检查logrotate服务是否在CentOS 7.9上运行：

systemctl status logrotate.service

如果logrotate服务正在运行，你应该会看到类似以下的输出：

● logrotate.service - Rotate log files
   Loaded: loaded (/usr/lib/systemd/system/logrotate.service; static; vendor preset: disabled)
   Active: active (exited) since Wed 2021-10-20 10:30:48 UTC; 2h 5min ago
     Docs: man:logrotate(8)
           man:logrotate.conf(5)
  Process: 24792 ExecStart=/usr/sbin/logrotate /etc/logrotate.conf (code=exited, status=0/SUCCESS)
 Main PID: 24792 (code=exited, status=0/SUCCESS)

如果logrotate服务未运行，则会显示不同的输出。