Connection

Overview

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# CONNECTION PARAMETERS
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proxy_env
ansible_host

Detail

proxy_env

在某些受到“互联网封锁”的地区，有些软件的下载会受到影响。

例如，从中国大陆访问PostgreSQL的官方源，下载速度可能只有几KB每秒。但如果使用了合适的HTTP代理，则可以达到几MB每秒。

因此，如果您有代理服务器，请通过proxy_env进行配置，样例如下：

proxy_env: # global proxy env when downloading packages
  http_proxy: 'http://username:password@proxy.address.com'
  https_proxy: 'http://username:password@proxy.address.com'
  all_proxy: 'http://username:password@proxy.address.com'
  no_proxy: "localhost,127.0.0.1,10.0.0.0/8,192.168.0.0/16,*.pigsty,*.aliyun.com"

ansible_host

如果您的环境使用了跳板机，或者进行了某些定制化修改，无法通过简单的ssh <ip>方式访问，那么可以考虑使用Ansible的连接参数。

Ansible中关于SSH连接的参数

• ansible_host

  The name of the host to connect to, if different from the alias you wish to give to it.

• ansible_port

  The ssh port number, if not 22

• ansible_user

  The default ssh user name to use.

• ansible_ssh_pass

  The ssh password to use (never store this variable in plain text; always use a vault. See Variables and Vaults)

• ansible_ssh_private_key_file

  Private key file used by ssh. Useful if using multiple keys and you don’t want to use SSH agent.

• ansible_ssh_common_args

  This setting is always appended to the default command line for sftp, scp, and ssh. Useful to configure a ProxyCommand for a certain host (or group).

• ansible_sftp_extra_args

  This setting is always appended to the default sftp command line.

• ansible_scp_extra_args

  This setting is always appended to the default scp command line.

• ansible_ssh_extra_args

  This setting is always appended to the default ssh command line.

• ansible_ssh_pipelining

  Determines whether or not to use SSH pipelining. This can override the pipelining setting in ansible.cfg.

最简单的用法是将ssh alias配置为ansible_host，只要您可以通过ssh <name>的方式访问目标机器，那么将ansible_host配置为<name>即可。注意这些变量都是实例级别的变量。