ssh config中有多个类似的条目

假设我要ssh使用.ssh config文件中的相同设置为30台服务器配置选项：

host XXX
     HostName XXX.YYY.com
     User my_username
     Compression yes
     Ciphers arcfour,blowfish-cbc
     Protocol 2
     ControlMaster auto
     ControlPath ~/.ssh/%r@%h:%p
     IdentityFile ~/.ssh/YYY/id_rsa

这30台机器之间唯一改变的是XXX。

除了在config文件中重复上述结构30次之外，还有另一种方法来定义一系列机器吗？

从ssh_config(5)手册页：

 Host    Restricts the following declarations (up to the next Host key‐
         word) to be only for those hosts that match one of the patterns
         given after the keyword.  If more than one pattern is provided,
         they should be separated by whitespace.

...

 HostName
         Specifies the real host name to log into.  This can be used to
         specify nicknames or abbreviations for hosts.  If the hostname
         contains the character sequence ‘%h’, then this will be replaced
         with the host name specified on the commandline (this is useful
         for manipulating unqualified names).

所以：

Host XXX1 XXX2 XXX3
  HostName %h.YYY.com

要最小化设置，您可以.ssh/config像这样

Host X01
    HostName X01.YYY.com

Host X02
    HostName X02.YYY.com

...

Host X01 X02 ...
     User my_username
     Compression yes
     Ciphers arcfour,blowfish-cbc
     Protocol 2
     ControlMaster auto
     ControlPath ~/.ssh/%r@%h:%p
     IdentityFile ~/.ssh/YYY/id_rsa

Host X01 X02 ...Host *如果每个主机都具有以下配置，则可以替换为

只需使用 *

见man ssh_config：

模式模式由零个或多个非空白字符，“ *”（匹配零个或多个字符的通配符）或“？”组成 （与一个字符完全匹配的通配符）。例如，要为“ .co.uk”域集中的任何主机指定一组声明，可以使用以下模式：

       Host *.co.uk

 The following pattern would match any host in the 192.168.0.[0-9] network range:

       Host 192.168.0.?

 A pattern-list is a comma-separated list of patterns.  Patterns within pattern-lists may be negated by preceding them with an
 exclamation mark (‘!’).  For example, to allow a key to be used from anywhere within an organisation except from the “dialup”
 pool, the following entry (in authorized_keys) could be used:

       from="!*.dialup.example.com,*.example.com"

从Ignacio Vazquez-Abrams和H.-Dirk Schmitt的答案中可以将以下内容添加到.ssh / config

HOST XXX*
    HostName %h.YYY.com
    User myname

然后，例如，您可以通过以下方式登录为myname@XXX2.YYY.com

ssh XXX2

这对我有用：

CanonicalizeHostname是
CanonicalDomains xxx.auckland.ac.nz yyy.auckland.ac.nz

主持人* .xxx.auckland.ac.nz
   用户myuser
主持人* .yyy.auckland.ac.nz
   用户myuser

这样一来，用户就可以使用域中的名称并更改用户名：

bluebottle：〜user_one $ ssh itslogprd05
myuser@itslogprd05.xxx.auckland.ac.nz的密码：