本文實例講述了Centos7.4服務器安裝apache及安裝過程出現的問題解決方法。分享給大家供大家參考，具體如下：
一、安裝httpd
1. 安裝之前，先查看系統中是否存在已經安裝了的httpd.rpm包，如果，沒有就是沒安裝，有的話rpm -e 對應的rpm包名進行刪除
2. 使用yum安裝(自動安裝依賴包),簡單方便
3. 安裝成功后，httpd-v 查看安裝的apache版本，查找apache的配置文件位置
#find / -name "httpd.conf"
4. 將找到的源配置文件備份一份，防止錯誤后無法恢復
#cp /etc/httpd/conf/httpd.conf /etc/httpd/conf/httpd.conf.bak
5. 啟動Apache服務
#systemctl start httpd.service
6. 開機自動啟動Apache服務
#systemctl enable httpd.service 開機自啟httpd
#systemctl disable httpd.service 開機不啟動httpd
7. 查看httpd的狀態
#systemctl status httpd.service
二、安裝過程出現的問題
1. Apache啟動失敗，Job for httpd.service failed because the control process exited with error code. See “systemctl status httpd.service” and “journalctl -xe” for details
執行命令,查看報錯提示
#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.
問題是80端口被占用
解決辦法：
查看80端口的使用情況
① .netstat -lnp|grep 80
tcp 0 0 192.168.180.68:61027 0.0.0.0:* LISTEN 6289/oproxyd
tcp 0 0 :::80 :::* LISTEN 846/httpd
tcp 0 0 ::ffff:192.168.180.68:7001 :::* LISTEN 32015/java
殺掉占用80端口的進程
② .kill -9 846
③ .若是前兩個方法不行的話，則重啟后再啟動httpd服務
2.Apache啟動失敗，httpd：httpd: Could not reliably determine the server's fully qualified domain name, using localhost.localdomain for ServerName
① .進入apache的配置文件
vi /etc/httpd/conf/httpd.conf
② ./ServerName 查找ServerName
#ServerName www.example.com:80
將其前面的#去掉
:wq保存并退出
③ .重啟服務
systemctl restart httpd.service
希望本文所述對大家CentOS服務器配置有所幫助。
