July 2018
Intermediate to advanced
504 pages
11h 34m
English
Content preview from Learn OpenShift
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Virtual IPs
We can see that in OpenShift HA, we have what's called an enterprise load balancer, with two Virtual IPs (VIPs). We need one VIP for traffic to master nodes, and another VIP for traffic to actual OpenShift applications, running on OpenShift nodes within pods:
OpenShift with external load balancers
Why can't we just use DNS load balancing? The reason is, if we use DNS load balancing and one of the masters or nodes goes down, some traffic will still keep flowing to the failed node. Load balancing allows for implementing health checks and stops routing the traffic to the failed endpoint. For example, if one of the infra nodes fails, ...