Centos启动Apache失败，显示Job for httpd.service failed because the control process exited with error code.

需要的工具:

1. centos 7.x以上的镜像文件
2. 本地VMware 15.5以上
3. Navicat Premium
4. 使用XSHELL 7和XFTP 其他软件都可
5. Wechat_devtool (微信开发者工具) ego微商客户端源码

相关软件和源码:

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yum install httpd #安装apache服务

当我们执行systemctl status httpd时

报错信息：Job for httpd.service failed because the control process exited with error code. See "systemctl status httpd.service" and "journalctl -xe" for details

通过提示信息

**
See "systemctl status httpd.service" and "journalctl -xe" for details

执行journalctl -xe命令，

May 07 10:10:15 localhost.localdomain dbus[580]: [system] Successfully activated service 'org.freedesktop.problems'
May 07 10:12:34 localhost.localdomain kernel: perf: interrupt took too long (16513 > 15557), lowering kernel.perf_event_max_sample_rate to 12000
May 07 10:13:48 localhost.localdomain polkitd[617]: Registered Authentication Agent for unix-process:5169:404183 (system bus name :1.220 [/usr/bin/pkttyagent --notify-fd 5 --fallback], object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale en_US.UTF-8)
May 07 10:13:52 localhost.localdomain polkitd[617]: Operator of unix-process:5169:404183 successfully authenticated as unix-user:root to gain ONE-SHOT authorization for action org.freedesktop.systemd1.manage-units for system-bus-name::1.221 [systemctl start httpd] (owne
May 07 10:13:52 localhost.localdomain systemd[1]: Starting The Apache HTTP Server...
-- Subject: Unit httpd.service has begun start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- Unit httpd.service has begun starting up.
May 07 10:13:52 localhost.localdomain httpd[5186]: AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using localhost.localdomain. Set the 'ServerName' directive globally to suppress this message
May 07 10:13:52 localhost.localdomain httpd[5186]: (98)Address already in use: AH00073: make_sock: unable to listen for connections on address [::]:80
May 07 10:13:52 localhost.localdomain httpd[5186]: (98)Address already in use: AH00073: make_sock: unable to listen for connections on address 0.0.0.0:80
May 07 10:13:52 localhost.localdomain httpd[5186]: no listening sockets available, shutting down
May 07 10:13:52 localhost.localdomain httpd[5186]: AH00015: Unable to open logs
May 07 10:13:52 localhost.localdomain systemd[1]: httpd.service: main process exited, code=exited, status=1/FAILURE
May 07 10:13:52 localhost.localdomain systemd[1]: Failed to start The Apache HTTP Server.
-- Subject: Unit httpd.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- Unit httpd.service has failed.
-- 
-- The result is failed.
May 07 10:13:52 localhost.localdomain polkitd[617]: Unregistered Authentication Agent for unix-process:5169:404183 (system bus name :1.220, object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale en_US.UTF-8) (disconnected from bus)
May 07 10:13:52 localhost.localdomain systemd[1]: Unit httpd.service entered failed state.
May 07 10:13:52 localhost.localdomain systemd[1]: httpd.service failed.
May 07 10:13:58 localhost.localdomain su[5193]: (to root) zws on pts/0
May 07 10:13:58 localhost.localdomain su[5193]: pam_unix(su:session): session opened for user root by zws(uid=1000)
May 07 10:13:58 localhost.localdomain dbus[580]: [system] Activating service name='org.freedesktop.problems' (using servicehelper)
May 07 10:13:58 localhost.localdomain dbus[580]: [system] Successfully activated service 'org.freedesktop.problems'
May 07 10:14:12 localhost.localdomain polkitd[617]: Registered Authentication Agent for unix-process:5232:406549 (system bus name :1.226 [/usr/bin/pkttyagent --notify-fd 5 --fallback], object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale en_US.UTF-8)
May 07 10:14:12 localhost.localdomain systemd[1]: Starting The Apache HTTP Server...
-- Subject: Unit httpd.service has begun start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- Unit httpd.service has begun starting up.
May 07 10:14:12 localhost.localdomain httpd[5239]: AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using localhost.localdomain. Set the 'ServerName' directive globally to suppress this message
May 07 10:14:12 localhost.localdomain httpd[5239]: (98)Address already in use: AH00073: make_sock: unable to listen for connections on address [::]:80
May 07 10:14:12 localhost.localdomain httpd[5239]: (98)Address already in use: AH00073: make_sock: unable to listen for connections on address 0.0.0.0:80
May 07 10:14:12 localhost.localdomain httpd[5239]: no listening sockets available, shutting down
May 07 10:14:12 localhost.localdomain httpd[5239]: AH00015: Unable to open logs
May 07 10:14:12 localhost.localdomain systemd[1]: httpd.service: main process exited, code=exited, status=1/FAILURE
May 07 10:14:12 localhost.localdomain systemd[1]: Failed to start The Apache HTTP Server.
-- Subject: Unit httpd.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- Unit httpd.service has failed.
-- 
-- The result is failed.
May 07 10:14:12 localhost.localdomain systemd[1]: Unit httpd.service entered failed state.
May 07 10:14:12 localhost.localdomain systemd[1]: httpd.service failed.
May 07 10:14:12 localhost.localdomain polkitd[617]: Unregistered Authentication Agent for unix-process:5232:406549 (system bus name :1.226, object path /org/freedesktop/PolicyKit1/AuthenticationAgent, locale en_US.UTF-8) (disconnected from bus)

查看端口占用情况：

netstat -antlp | grep 80 #查看80端口占用情况

发现nginx服务占用80端口，我们关闭该服务，再次重启httpd服务即可

1. systemctl stop nginx.service #关闭nginx服务
2. systemctl start httpd.service #开启apache服务
3. systemctl enable httpd.service #apache服务开机启动

我们只需要暂停： nginx 服务，然后再次启动Apache服务

1. service nginx stop
2. systemctl status httpd

这时候提示显示已经启动成功:

httpd.service - The Apache HTTP Server
   Loaded: loaded (/usr/lib/systemd/system/httpd.service; disabled; vendor preset: disabled)
   Active: active (running) since Sat 2022-05-07 10:28:17 CST; 13s ago
     Docs: man:httpd(8)
           man:apachectl(8)
 Main PID: 5527 (httpd)
   Status: "Total requests: 0; Current requests/sec: 0; Current traffic:   0 B/sec"
    Tasks: 6
   CGroup: /system.slice/httpd.service
           ├─5527 /usr/sbin/httpd -DFOREGROUND
           ├─5531 /usr/sbin/httpd -DFOREGROUND
           ├─5532 /usr/sbin/httpd -DFOREGROUND
           ├─5533 /usr/sbin/httpd -DFOREGROUND
           ├─5534 /usr/sbin/httpd -DFOREGROUND
           └─5535 /usr/sbin/httpd -DFOREGROUND

May 07 10:28:17 localhost.localdomain systemd[1]: Starting The Apache HTTP Server...
May 07 10:28:17 localhost.localdomain httpd[5527]: AH00558: httpd: Could not reliably determine the server's fully qualified domain name, using localhost.localdomain. Set the 'ServerName' directive globally to suppress this message
May 07 10:28:17 localhost.localdomain systemd[1]: Started The Apache HTTP Server.

原因:

nginx和apache都需要用到80端口，所以此时nginx和apache无法同时启动。
此时可以通过修改nginx或者apache的监听端口来解决，一般来说我们不希望修改nginx的默认端口，此时可以修改apache的配置文件来达到目的。
2）修改配置文件，将监听端口改为8080，重启apache服务