Apache Crashes AH00295：抓住了SIGTERM，关闭了[systemctl]

Question

我从源代码构建了apache-httpd-2.4.20并正确安装。

我在apphttpd.service下创建了/etc/systemd/system。

脚本

[Unit]
Description=Apache Web Server
After=network.target remote-fs.target nss-lookup.target

[Service]
Type=simple
TimeoutStartSec=600
PIDFile=/usr/local/apache/logs/httpd.pid
ExecStart=/usr/local/apache/bin/apachectl -k start
ExecStop=/usr/local/apache/bin/apachectl -k stop
ExecReload=/usr/local/apache/bin/apachectl -k graceful
Restart=on-abort
PrivateTmp=true
LimitNOFILE=infinity
#User=root
#Group=root

[Install]
WantedBy=multi-user.target

当我执行systemctl start apphttpd时，得到消息已启动Apache Web Server，

状态记录

**systemctl status -l apphttpd**

apphttpd.service - Apache Web Server
   Loaded: loaded (/etc/systemd/system/apphttpd.service; enabled)
   Active: inactive (dead) since Wed 2018-06-13 21:45:20 SGT; 14min ago
  Process: 112124 ExecStop=/usr/local/apache/bin/apachectl -k stop (code=exited, status=0/SUCCESS)
  Process: 112118 ExecStart=/usr/local/apache/bin/apachectl -k start (code=exited, status=0/SUCCESS)
 Main PID: 112118 (code=exited, status=0/SUCCESS)

Jun 13 21:45:20 <host> systemd[1]: Started Apache Web Server.

但实际上没有启动服务。

error_log信息：

[Wed Jun 13 21:45:20.873135 2018] [core:debug] [pid 112123:tid 139709837686656] log.c(1546): AH02639: Using SO_REUSEPORT: yes (1)
[Wed Jun 13 21:45:20.873145 2018] [mpm_worker:debug] [pid 112123:tid 139709837686656] worker.c(1874): AH00294: Accept mutex: sysvsem (default: sysvsem)
[Wed Jun 13 21:45:20.907675 2018] [core:info] [pid 112123:tid 139709837686656] AH00096: removed PID file /usr/local/apache/logs/httpd.pid (pid=112123)
[Wed Jun 13 21:45:20.907684 2018] [mpm_worker:notice] [pid 112123:tid 139709837686656] AH00295: caught SIGTERM, shutting down

但是如果我从/ usr / local / apache / bin / apachectl -k start启动服务，服务就会正常启动并能够得到响应。

[Wed Jun 13 21:46:25.146698 2018] [core:debug] [pid 112229:tid 140320724187008] log.c(1546): AH02639: Using SO_REUSEPORT: yes (1)
[Wed Jun 13 21:46:25.146711 2018] [mpm_worker:debug] [pid 112229:tid 140320724187008] worker.c(1874): AH00294: Accept mutex: sysvsem (default: sysvsem)

我的apphttpd.service脚本是否存在任何问题，是否存在任何访问问题？提前感谢您的建议和帮助。