无法可靠地确定服务器的完全限定域名，使用127.0.0.1作为ServerName。

I tried to restart my Apache server on CentOS 5.0 and got this message:

我试着在CentOS 5.0重启我的Apache服务器，并得到了这个消息:

httpd: Could not reliably determine the server's fully qualified domain name, using 127.0.0.1 for ServerName

无法可靠地确定服务器的完全限定域名，使用127.0.0.1作为ServerName。

Here is the /etc/hosts file:

这里是/etc/hosts文件:

127.0.0.1    server4-245    server4-245.com    localhost.localdomain localhost
::1        localhost6.localdomain6 localhost6

Here is the /etc/sysconfig/network file:

这里是/etc/sysconfig/network文件:

NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=server4-245

I also have this in the Apache httpd.conf file:

我在Apache httpd中也有这个。配置文件:

ServerName localhost

However, I still get the first error message when I restart Apache.

但是，当我重新启动Apache时，仍然会收到第一个错误消息。

10 个解决方案

#1

Your hosts file does not include a valid FQDN, nor is localhost an FQDN. An FQDN must include a hostname part, as well as a domain name part. For example, the following is a valid FQDN:

您的主机文件不包含有效的FQDN，本地主机也不包含FQDN。一个FQDN必须包含一个主机名部分，以及一个域名部分。例如，以下是一个有效的FQDN:

host.server4-245.com

Choose an FQDN and include it both in your /etc/hosts file on both the IPv4 and IPv6 addresses you are using (in your case, localhost or 127.0.0.1), and change your ServerName in your httpd configuration to match.

选择一个FQDN，并将它包含在您正在使用的IPv4和IPv6地址的/etc/hosts文件中(在您的情况中，localhost或127.0.0.1)，并将您的服务器名更改为httpd配置以匹配。

/etc/hosts:

/ etc / hosts:

127.0.0.1    localhost.localdomain localhost host.server4-245.com
::1          localhost.localdomain localhost host.server4-245.com

httpd.conf:

httpd . conf。

ServerName host.server4-245.com

#2

195

If you don't have httpd.conf in folder /etc/apache2, you should have apache2.conf - simply add:

如果没有httpd。conf在文件夹/etc/apache2中，应该有apache2。conf -只需添加:

ServerName localhost

ServerName localhost

Then restart the apache2 service.

然后重新启动apache2服务。

#3

After the initial install of Apache server, I got the following error while restarting the Apache service on Ubuntu 12.04 (Precise Pangolin)

在Apache服务器的初始安装之后，我在Ubuntu 12.04(确切的穿山甲)重新启动Apache服务时犯了以下错误

The solution is really simple. Just add the ServerName directive to /etc/apache2/httpd.conf:

解决方法非常简单。只需将ServerName指令添加到/etc/apache2/httpd.conf:

sudo nano /etc/apache2/httpd.conf

Add: ServerName localhost

添加:ServerName localhost

Finally restart the Apache server:

最后重新启动Apache服务器:

sudo /etc/init.d/apache2 restart

#4

So while this is answered and accepted it still came up as a top search result and the answers though laid out (after lots of research) left me scratching my head and digging a lot further. So here's a quick layout of how I resolved the issue.

所以，当这个答案被接受的时候，它仍然是一个*搜索的结果，而答案虽然列出(经过大量的研究)，让我挠头并进一步挖掘。这是我如何解决这个问题的快速布局。

Assuming my server is myserver.myhome.com and my static IP address is 192.168.1.150:

假设我的服务器是myserver.myhome.com，我的静态IP地址是192.168.1.150:

Edit the hosts file

编辑主机文件

$ sudo nano -w /etc/hosts

127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4

127.0.0.1 myserver.myhome.com myserver

192.168.1.150 myserver.myhome.com myserver

::1 localhost localhost.localdomain localhost6 localhost6.localdomain6
::1 myserver.myhome.com myserver

Edit httpd.conf

编辑httpd . conf

$ sudo nano -w /etc/apache2/httpd.conf

ServerName myserver.myhome.com

Edit network

编辑网络

$ sudo nano -w /etc/sysconfig/network HOSTNAME=myserver.myhome.com

Verify

验证

$ hostname

(output) myserver.myhome.com

$ hostname -f

(output) myserver.myhome.com

Restart Apache

重新启动Apache
```
$ sudo /etc/init.d/apache2 restart
```

It appeared the difference was including myserver.myhome.com to both the 127.0.0.1 as well as the static IP address 192.168.1.150 in the hosts file. The same on Ubuntu Server and CentOS.

在主机文件中，出现了不同的情况，包括myserver.myhome.com和静态IP地址192.168.1.150。Ubuntu服务器和CentOS也一样。

#5

In httpd.conf, search for "ServerName". It's usually commented out by default on Mac. Just uncomment it and fill it in. Make sure you also have the name/ip combo set in /etc/hosts.

在httpd。相依,搜索“ServerName”。它通常会在Mac的默认状态下被注释掉，只是取消注释并填充它。确保在/etc/hosts中设置了名称/ip组合。

#6

In the Apache httpd.conf file:

在Apache httpd。配置文件:

ServerName: 127.0.0.1

#7

There are two ways to resolve this error:

有两种方法可以解决这个错误:

Include /etc/apache2/httpd.conf

包括/etc/apache2/httpd.conf

Add the above line in file /etc/apache2/apache2.conf

将上述行添加到文件/etc/apache2/apache2.conf中。
Add this line at the end of the file /etc/apache2/apache2.conf:

在文件/etc/apache2/apache2.conf的末尾添加这一行:

ServerName localhost

ServerName localhost

#8

I've resolved the fully qualified domain name message on different occasions by adding my server hostname to the /etc/apache2/httpd.conf file and to the /etc/apache2/apache2.conf file.

在不同的场合，我通过将我的服务器主机名添加到/etc/apache2/httpd中，解决了完全限定的域名消息。conf文件和/etc/apache2/apache2。conf文件。

Type hostname -f in your terminal. This query will return your hostname.

在终端中键入主机名-f。此查询将返回您的主机名。

Then edit the /etc/apache2/httpd.conf file (or create it if it does not exist for some reason) and add ServerName <your_hostname>.

然后编辑/etc/apache2/httpd.conf文件(或者创建它，如果它不存在的话)，并添加ServerName 。

Alternatively, I have also been able to eliminate the message by adding ServerName <your_hostname> to the /etc/apache2/apache2.conf file.

另外，我还可以通过在/etc/apache2/apache2上添加ServerName 来消除消息。conf文件。

If all goes well, when you restart Apache, the message will be gone.

如果一切顺利，当您重新启动Apache时，消息将会消失。

#9

Most answers suggest to just add ServerName localhost to /etc/apache2/apache2.conf.

大多数答案建议只添加ServerName localhost到/etc/apache2/apache2.conf。

But quoting Apache documentation :

但是引用Apache文档:

The presence of this error message also indicates that Apache httpd was unable to obtain a fully-qualified hostname by doing a reverse lookup on your server's IP address. While the above instructions will get rid of the warning in any case, it is also a good idea to fix your name resolution so that this reverse mapping works.

此错误消息的存在还表明，Apache httpd无法通过在服务器的IP地址上进行反向查找获得完全限定的主机名。尽管上面的说明将会在任何情况下消除警告，但是修正您的名称解析也不失为一个好主意，以便使这个反向映射起作用。

Therefore adding such a line to /etc/hosts is probably a more robust solution :

因此，向/etc/hosts添加这样的一行可能是一个更健壮的解决方案:

192.0.2.0  foobar.example.com  foobar

where 192.0.2.0 is the static IP address of the server named foobar within the example.com domain.

其中192.0.2.0是example.com域中名为foobar的服务器的静态IP地址。

One can check the FQDN e.g. with

一个可以检查FQDN。

hostname -A

(shortcut for hostname --all-fqdn).

(主机名——all-fqdn快捷方式)。

#10

Make sure you're editing the right httpd.conf file, then the error about unreliable server's domain name should be gone (this is the most common mistake).

确保你编辑的是正确的httpd。conf文件，那么关于不可靠服务器的域名的错误应该消失(这是最常见的错误)。

To locate your httpd.conf Apache configuration file, run:

定位你的httpd。Apache配置文件，运行:

apachectl -t -D DUMP_INCLUDES

Then edit the file and uncomment or change ServerName line into:

然后编辑文件，取消注释或将ServerName行更改为:

ServerName localhost

Then restart your apache by: sudo apachectl restart

然后重新启动您的apache: sudo apachectl重新启动。

#1