Centos7.4服务器安装apache及安装过程出现的问题解决方法

#rpm -qa | grep httpd

#yum -y install httpd

#find / -name "httpd.conf"

#cp /etc/httpd/conf/httpd.conf /etc/httpd/conf/httpd.conf.bak

#systemctl start httpd.service

#systemctl enable httpd.service 开机自启httpd
#systemctl disable httpd.service 开机不启动httpd

#systemctl status httpd.service

#systemctl status httpd.service

[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 2018-11-26 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)
11月 26 11:13:09 cloud1.localdomain httpd[9913]: (98)Address already in use: AH00072: make_sock: could not bind to address [::]:80
11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
11月 26 11:13:09 cloud1.localdomain httpd[9913]: no listening sockets available, shutting down
11月 26 11:13:09 cloud1.localdomain httpd[9913]: AH00015: Unable to open logs
11月 26 11:13:09 cloud1.localdomain systemd[1]: httpd.service: main process exited, code=exited, status=1/FAILURE
11月 26 11:13:09 cloud1.localdomain kill[9915]: kill: cannot find process ""
11月 26 11:13:09 cloud1.localdomain systemd[1]: httpd.service: control process exited, code=exited status=1
11月 26 11:13:09 cloud1.localdomain systemd[1]: Failed to start The Apache HTTP Server.
11月 26 11:13:09 cloud1.localdomain systemd[1]: Unit httpd.service entered failed state.
11月 26 11:13:09 cloud1.localdomain systemd[1]: httpd.service failed.

vi /etc/httpd/conf/httpd.conf

#ServerName www.example.com:80

systemctl restart httpd.service