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Document URL: https://access.redhat.com/documentation/en/openshift-enterprise/version-3.2/installation-and-configuration/#establishing-a-tunnel-using-a-ramp-node Section Number and Name: 21.3. Establishing a Tunnel Using a Ramp Node 7. Mark the ramp node as an unschedulable node so that no pods end up on the ramp node itself Describe the issue: What problem/issue/behavior are you having trouble with? What do you expect to see? The steps described for routing traffic from the edge load balancer servers (https://access.redhat.com/documentation/en/openshift-enterprise/version-3.2/installation-and-configuration/#establishing-a-tunnel-using-a-ramp-node) can be confusing. Indeed when configuring the ramp node (https://access.redhat.com/documentation/en/openshift-enterprise/version-3.2/installation-and-configuration/#establishing-a-tunnel-using-a-ramp-node), the point 7 suggests marking the node as non-schedulable. Unfortunately, That action directly clashes with the next section for having an HA infra for ramp nodes (https://access.redhat.com/documentation/en/openshift-enterprise/version-3.2/installation-and-configuration/#configuring-a-highly-available-ramp-node). The reason being that the ramp node once marked as non-schedulable is unable to receive the ipfailover pods which is required for HA Ramp node. Suggestions for improvement: It should be made clear in documentation in which circumstances we need to make node unscheduled and scheduled Additional information:
PR submitted for this BZ, and verification given over IRC. Currently on peer review: https://github.com/openshift/openshift-docs/pull/2830
Commit pushed to master at https://github.com/openshift/openshift-docs https://github.com/openshift/openshift-docs/commit/0ffe03f76728b0566c5bc32fd66392e0b899fea0 Merge pull request #2830 from bfallonf/unschedHA-1372338 Bug 1372338 edited step for making ramp node highly-available
Link to released docs: https://docs.openshift.com/container-platform/3.3/install_config/routing_from_edge_lb.html#establishing-a-tunnel-using-a-ramp-node
My mistake, the released docs are not out just yet. Will be released at the next weekly release date.