ip别名背后的概念很简单：可以在一个网络接口上配置多个IP地址。
The concept behind IP aliasing is simple: you can configure multiple IP addresses on a single network interface.
SIOCGIFCONF 可以用来获取所有配置接口的信息，SIOCGIFADDR 可以用来检索特定接口的地址。
While SIOCGIFCONF can be used to get information of all configured interfaces, SIOCGIFADDR can be used to retrieve the address for a specific interface.
这个文件应该包含这样的远程ip地址和主机名：它们不包含在集群配置中，但可以通过PowerHA网络接口访问。
This file should contain remote IP addresses and host names that are not in the cluster configuration that can be accessed through the PowerHA network interfaces.
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