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Document URL: https://access.redhat.com/documentation/en/openshift-enterprise/3.1/installation-and-configuration/chapter-16-routing-from-edge-load-balancers Section Number and Name: 16.3. ESTABLISHING A TUNNEL USING A RAMP NODE On the ramp node: 6. Modify the OVS rules for SNAT: Describe the issue: In 3.1.1 multitentant and flat SDN plugins were merged, yet documentation still says setting one of these modes during configuration which may result in wrong set of OVS flows being generated on the Ramp node. Suggestions for improvement: Update list of commands to match the current SDN implementation Additional information: upstream docs have the same issue https://docs.openshift.com/enterprise/3.1/install_config/routing_from_edge_lb.html
Evgheni, Looking at this: https://docs.openshift.com/enterprise/3.1/install_config/routing_from_edge_lb.html#establishing-a-tunnel-using-a-ramp-node As I understand it, step 6 "Modify the OVS rules for SNAT" is what needs the update (from the topic linked above), but I'm not sure what that update should be. Could you please provide the required update? The priority/severity of this BZ has been escalated to urgent.
In short, before there were two plugins, "sdn" and "multitentant" - so there were specific OVS rules needed only for the "multitentant" plugin. In 3.1.1.6 plugins were merged, so even what was "sdn" now requires all the rules to be in place. For users who had "sdn" defined that would break the Ramp node as these now required rules would be missing.
Relevant updates to that section of the documentation were already implemented: https://github.com/openshift/openshift-docs/pull/1934 https://github.com/openshift/openshift-docs/pull/1781 There's one minor additional clean up to complete 1934: https://github.com/openshift/openshift-docs/pull/2117 but other than that I believe this has already been addressed, so I'm closing it as currentrelease.
Thanks Pep. The final updated docs with the changes can be seen here [1]. [1] https://docs.openshift.com/enterprise/3.2/install_config/routing_from_edge_lb.html