红帽全球峰会9.8. ingressIP 的高可用性
在非云集群中，可以将 IP 故障转移和 ingressIP 合并到服务。其结果是，为使用 ingressIP 创建服务的用户提供了高可用性服务。
方法是指定一个 ingressIPNetworkCIDR 范围，然后在创建 ipfailover 配置时使用相同的范围。
由于 IP 故障转移最多可支持整个集群的 255 个 VIP，所以 ingressIPNetworkCIDR 需要为 /24 或更小。
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