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

[root@cloud1 bin]# systemctl status httpd.service
● httpd.service - The Apache HTTP Server
   Loaded: loaded (/usr/lib/systemd/system/httpd.service; disabled; vendor preset: disabled)
   Active: failed (Result: exit-code) since 五 2016-08-26 11:13:09 CST; 6min ago
     Docs: man:httpd(8)
           man:apachectl(8)
  Process: 9915 ExecStop=/bin/kill -WINCH ${MAINPID} (code=exited, status=1/FAILURE)
  Process: 9913 ExecStart=/usr/sbin/httpd $OPTIONS -DFOREGROUND (code=exited, status=1/FAILURE)
 Main PID: 9913 (code=exited, status=1/FAILURE)

8月 26 11:13:09 cloud1.localdomain httpd[9913]: (98)Address already in use: AH00072: make_sock: could not bind to address [::]:80
8月 26 11:13:09 cloud1.localdomain httpd[9913]: (98)Address already in use: AH00072: make_sock: could not bind to address 0.0.0.0:80
8月 26 11:13:09 cloud1.localdomain httpd[9913]: no listening sockets available, shutting down
8月 26 11:13:09 cloud1.localdomain httpd[9913]: AH00015: Unable to open logs
8月 26 11:13:09 cloud1.localdomain systemd[1]: httpd.service: main process exited, code=exited, status=1/FAILURE
8月 26 11:13:09 cloud1.localdomain kill[9915]: kill: cannot find process ""
8月 26 11:13:09 cloud1.localdomain systemd[1]: httpd.service: control process exited, code=exited status=1
8月 26 11:13:09 cloud1.localdomain systemd[1]: Failed to start The Apache HTTP Server.
8月 26 11:13:09 cloud1.localdomain systemd[1]: Unit httpd.service entered failed state.
8月 26 11:13:09 cloud1.localdomain systemd[1]: httpd.service failed.

[root@cloud1 bin]# journalctl -xe
-- 
-- Unit session-9830.scope has finished starting up.
-- 
-- The start-up result is done.
8月 26 11:01:01 cloud1.localdomain systemd[1]: Starting Session 9830 of user root.
-- Subject: Unit session-9830.scope has begun start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- Unit session-9830.scope has begun starting up.
8月 26 11:01:01 cloud1.localdomain CROND[9744]: (root) CMD (run-parts /etc/cron.hourly)
8月 26 11:01:01 cloud1.localdomain run-parts(/etc/cron.hourly)[9747]: starting 0anacron
8月 26 11:01:01 cloud1.localdomain run-parts(/etc/cron.hourly)[9753]: finished 0anacron
8月 26 11:01:01 cloud1.localdomain run-parts(/etc/cron.hourly)[9755]: starting 0yum-hourly.cron
8月 26 11:01:01 cloud1.localdomain run-parts(/etc/cron.hourly)[9759]: finished 0yum-hourly.cron
8月 26 11:10:01 cloud1.localdomain systemd[1]: Started Session 9831 of user root.
-- Subject: Unit session-9831.scope has finished start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- Unit session-9831.scope has finished starting up.
-- 
-- The start-up result is done.
8月 26 11:10:01 cloud1.localdomain systemd[1]: Starting Session 9831 of user root.
-- Subject: Unit session-9831.scope has begun start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
-- 
-- Unit session-9831.scope has begun starting up.
8月 26 11:10:01 cloud1.localdomain CROND[9870]: (root) CMD (/usr/lib64/sa/sa1 1 1)
8月 26 11:13:09 cloud1.localdomain polkitd[1171]: Registered Authentication Agent for unix-process:9908:450142261 (system bus name :1.19686 [/usr/bin/pkttyagent --notify-fd 5 --fallback], object p
8月 26 11:13:09 cloud1.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.
8月 26 11:13:09 cloud1.localdomain httpd[9913]: (98)Address already in use: AH00072: make_sock: could not bind to address [::]:80
8月 26 11:13:09 cloud1.localdomain httpd[9913]: (98)Address already in use: AH00072: make_sock: could not bind to address 0.0.0.0:80
8月 26 11:13:09 cloud1.localdomain httpd[9913]: no listening sockets available, shutting down
8月 26 11:13:09 cloud1.localdomain httpd[9913]: AH00015: Unable to open logs
8月 26 11:13:09 cloud1.localdomain systemd[1]: httpd.service: main process exited, code=exited, status=1/FAILURE
8月 26 11:13:09 cloud1.localdomain kill[9915]: kill: cannot find process ""
8月 26 11:13:09 cloud1.localdomain systemd[1]: httpd.service: control process exited, code=exited status=1
8月 26 11:13:09 cloud1.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.
8月 26 11:13:09 cloud1.localdomain systemd[1]: Unit httpd.service entered failed state.
8月 26 11:13:09 cloud1.localdomain systemd[1]: httpd.service failed.
8月 26 11:13:09 cloud1.localdomain polkitd[1171]: Unregistered Authentication Agent for unix-process:9908:450142261 (system bus name :1.19686, object path /org/freedesktop/PolicyKit1/Authenticatio