Description of problem: The MTU value used on the Nodes Network should also be used for the Namespace Network and Pods VIF to avoid any possible MTU misconfiguration on a cluster that is already running. Version-Release number of selected component (if applicable): How reproducible: Steps to Reproduce: 1. 2. 3. Actual results: Expected results: Additional info:
The fixes for this bug are already present on master so I'm moving it to ON_QA. https://github.com/openshift/kuryr-kubernetes/commit/17f99a71782caec0cbf73cb268fc55ef0d2dba06 https://github.com/openshift/cluster-network-operator/commit/a918dd93e3059dc53c9f5d786fecc1ef5f56955c
Checked with: RHOS-16.1-RHEL-8-20210323.n.0 OCP 4.8.0-0.nightly-2021-04-18-101412 Using a tenant: Create a network with MTU 1400 and a subnet (shiftstack) [cloud-user@installer-host ~]$ openstack network show net1 |grep mtu | mtu | 1400 Created a router and added to the router as well as setting the gateway Checked the MTU of the openshift-kuryr-net (shiftstack) [cloud-user@installer-host ~]$ openstack network show ns/openshift-kuryr-net | grep mtu | mtu | 1400 Checked one of the pods MTU (shiftstack) [cloud-user@installer-host ~]$ oc exec -it packageserver-5d69b87476-slkp4 -n openshift-operator-lifecycle- manager -- ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 19: eth0@if2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1400 qdisc noqueue state UP group default qlen 1000 link/ether fa:16:3e:3c:30:93 brd ff:ff:ff:ff:ff:ff link-netnsid 0 inet 10.128.14.208/23 scope global eth0 valid_lft forever preferred_lft forever inet6 fe80::f816:3eff:fe3c:3093/64 scope link valid_lft forever preferred_lft forever
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (Moderate: OpenShift Container Platform 4.8.2 bug fix and security update), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHSA-2021:2438