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a2ensite 之后的 Apache 无法启动，并且出现错误“地址已被使用”

tag-icon • tag-icon 16.04 apache2
a2ensite 之后的 Apache 无法启动，并且出现错误“地址已被使用”

我有Ubuntu 16.04服务器并且在使用 Apache 网络服务器时遇到了一个奇怪的问题。

我添加了一个新域名，它将永久重定向到另一个域名。因此，我创建了一个 newdomain.com.conf 文件，其中包含

 ServerAdmin [email protected]
 ServerName newdomainname.com
 ServerAlias www.newdomainname.com
 Redirect permanent / http://www.domain.com

然后我通过 启用它a2ensite newdomain.com.conf。然后，我执行service apache2 restart以完成该过程，其中我没有收到任何错误消息。

但是 Apache 无法启动并且命令service apache2 status打印：

apache2.service - LSB: Apache2 web server
   Loaded: loaded (/etc/init.d/apache2; bad; vendor preset: enabled)
  Drop-In: /lib/systemd/system/apache2.service.d
           └─apache2-systemd.conf
   Active: inactive (dead) since Sun 2020-03-01 16:05:04 UTC; 27s ago
     Docs: man:systemd-sysv-generator(8)
  Process: 13416 ExecStop=/etc/init.d/apache2 stop (code=exited, status=0/SUCCESS)
  Process: 23983 ExecReload=/etc/init.d/apache2 reload (code=exited, status=0/SUCCESS)
  Process: 13280 ExecStart=/etc/init.d/apache2 start (code=exited, status=0/SUCCESS)

Mar 01 16:05:03 kotronis apache2[13280]: (98)Address already in use: AH00072: make_sock: could not bind to address [::]:80
Mar 01 16:05:03 kotronis apache2[13280]: (98)Address already in use: AH00072: make_sock: could not bind to address 0.0.0.0:80
Mar 01 16:05:04 kotronis apache2[13280]: no listening sockets available, shutting down
Mar 01 16:05:04 kotronis apache2[13280]: AH00015: Unable to open logs
Mar 01 16:05:04 kotronis apache2[13280]: Action 'start' failed.
Mar 01 16:05:04 kotronis apache2[13280]: The Apache error log may have more information.
Mar 01 16:05:04 kotronis apache2[13280]:  *
Mar 01 16:05:04 kotronis apache2[13416]:  * Stopping Apache httpd web server apache2
Mar 01 16:05:04 kotronis apache2[13416]:  *
Mar 01 16:05:04 kotronis systemd[1]: Started LSB: Apache2 web server.

如果我重新启动服务器，Apache 将正常启动并且service apache2 status命令打印：

apache2.service - LSB: Apache2 web server
   Loaded: loaded (/etc/init.d/apache2; bad; vendor preset: enabled)
  Drop-In: /lib/systemd/system/apache2.service.d
           └─apache2-systemd.conf
   Active: active (running) since Sun 2020-03-01 16:07:41 UTC; 7min ago
     Docs: man:systemd-sysv-generator(8)
  Process: 1261 ExecStart=/etc/init.d/apache2 start (code=exited, status=0/SUCCESS)
    Tasks: 11
   Memory: 198.4M
      CPU: 5.500s
   CGroup: /system.slice/apache2.service
           ├─ 1440 /usr/sbin/apache2 -k start
           ├─ 1638 /usr/sbin/apache2 -k start
           ├─ 1639 /usr/sbin/apache2 -k start
           ├─ 1642 /usr/sbin/apache2 -k start
           ├─ 1643 /usr/sbin/apache2 -k start
           ├─ 1645 /usr/sbin/apache2 -k start
           ├─ 1781 /usr/sbin/apache2 -k start
           ├─ 7891 /usr/sbin/apache2 -k start
           ├─ 8586 /usr/sbin/apache2 -k start
           ├─ 8890 /usr/sbin/apache2 -k start
           └─26106 /usr/sbin/apache2 -k start

Mar 01 16:07:39 kotronis systemd[1]: Starting LSB: Apache2 web server...
Mar 01 16:07:39 kotronis apache2[1261]:  * Starting Apache httpd web server apache2
Mar 01 16:07:41 kotronis apache2[1261]:  *
Mar 01 16:07:41 kotronis systemd[1]: Started LSB: Apache2 web server.

那么，问题是什么？在 Apache 日志中我也没有收到任何错误。

答案1

告诉我这是否有帮助，来自 apache 文档：

Overlapping Listen directives will result in a fatal error which
will prevent the server from starting up.

(48)Address already in use: make_sock: could not bind to address
[::]:80

See the discussion in the wiki for further troubleshooting tips. ```

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