* Starting web server apache2
AH00558: apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1. Set the 'ServerName' directive globally to suppress this message
(98)Address already in use: AH00072: make_sock: could not bind to address [::]:80
(98)Address already in use: AH00072: make_sock: could not bind to address 0.0.0.0:80
no listening sockets available, shutting down
AH00015: Unable to open logs
Action 'start' failed.
The Apache error log may have more information.
*
* The apache2 instance did not start within 20 seconds. Please read the log files to discover problems
答案1
Address already in use: AH00072: make_sock: could not bind to address [::]:80
根据错误提示，您已经有一个监听 80 端口的服务。请尝试：
service apache2 restart
可能是 apache 已在运行，因此您可以尝试重新启动它。如果仍然有问题，请检查系统中是否有其他可能使用端口 80 的进程。