Tim, You need to set the MTU of the OpenShift SDN to be lower than the MTU of the NIC.
This is described in https://docs.openshift.com/container-platform/3.11/scaling_performance/network_optimization.html#scaling-performance-optimizing-mtu . On Tue, Aug 27, 2019 at 12:02 PM Tim Dudgeon <tdudgeon...@gmail.com> wrote: > In one of our OKD3.11 environments the hosting provider wanting to > change the network MTU from 9000 to 1500 and did that for all the > physical network interfaces of all the nodes. > > This caused the Openshift networking to break completely. Resetting back > to 9000 restored things. > > Is there a way to allow for this to be done on a running Openshift system? > > Thanks > Tim > > _______________________________________________ > users mailing list > users@lists.openshift.redhat.com > http://lists.openshift.redhat.com/openshiftmm/listinfo/users >
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