apache is running normally but sometimes dead.
Almost once a month with frequency.

Below is “systemctl status httpd” Log.

● httpd.service – The Apache HTTP Server
Loaded: loaded (/usr/lib/systemd/system/httpd.service; enabled; vendor preset: disabled)
Active: active (running) since Thu 2024-05-09 21:33:22 KST; 3 weeks 1 days ago
Docs: man:httpd.service(8)
Process: 1795 ExecReload=/usr/sbin/httpd $OPTIONS -k graceful (code=exited, status=0/SUCCESS)
Main PID: 17647 (httpd)
Status: “Total requests: 0; Idle/Busy workers -1/-1;Requests/sec: 0; Bytes served/sec: 0 B/sec”
CGroup: /system.slice/httpd.service
├─15862 /usr/sbin/cronolog /var/log/httpd/%y/%m/error_log.%y%m%d
├─15870 /usr/sbin/cronolog /var/log/httpd/%y/%m/access_log.%y%m%d
├─15871 /usr/sbin/httpd -DFOREGROUND
└─17647 /usr/sbin/httpd -DFOREGROUND

Jun 01 00:05:51 servicename httpd[17647]: Server configured, listening on: port 443, port 80
Jun 01 00:05:54 servicename httpd[17647]: Server configured, listening on: port 443, port 80
Jun 01 00:05:58 servicename httpd[17647]: Server configured, listening on: port 443, port 80
Jun 01 00:06:02 servicename httpd[17647]: Server configured, listening on: port 443, port 80
Jun 01 00:06:05 servicename httpd[17647]: Server configured, listening on: port 443, port 80
Jun 01 00:06:12 servicename httpd[17647]: Server configured, listening on: port 443, port 80
Jun 01 00:06:15 servicename httpd[17647]: Server configured, listening on: port 443, port 80
Jun 01 00:06:18 servicename httpd[17647]: Server configured, listening on: port 443, port 80
Jun 01 00:06:26 servicename httpd[17647]: Server configured, listening on: port 443, port 80
Jun 01 00:06:28 servicename httpd[17647]: Server configured, listening on: port 443, port 80

What’s the problem ?
And what is mean the “Idle/Busy workers -1/-1” ?

I reinstalled apache, but not solved…