Common Problems

How to find the kubernetes object causing a dependency

When it says that an object is waiting for an other object, it might be difficult to understand which one it is refering to.

If in the status of resource X it says Waiting for Y, you can find which resource Y is meant by performing the following steps:

Find the python class name implementing resource Y:

grep -Rni 'KIND: "X"' yaook/op -A 1000 | grep "Y = "

Now find the class definition of that class CLASS_NAME:
grep -R "class CLASS_NAME" .
Examine the python code of this class definition. It will mention a kubernetes resource and this is the kind of kubernetes resource X is waiting for.

Network interface not found

If the initcontainer neutron-ovs-bridge-setup in the neutron-l2 statefulset pod fails with a Cannot find device "eth1" error (or similar) in its log, you probably are listing a device in the l2 agent’s bridge configuration, which does not exist on the the target system. If this is your intention, you can ignore the error. If not, go ahead and change it in docs/examples/neutron.yaml and re-apply the specification:

kubectl -n $YAOOK_OP_NAMESPACE apply -f docs/examples/neutron.yaml

Unable to establish connection to neutron

If you get an error similar to Unable to establish connection to https://neutron.yaook.cloud:32443/v2.0/agents, your glance, cinder, gnocchi ceph client secrets are probably not present in the $YAOOOK_OP_NAMESPACE namespace. Did you forget to copy them?

Note

The ceph client secrets might disappear without error at creation time, for example if there is a problem with the metadata.ownerReferences path.

Services or agents are not scheduled

The way to schedule (network) agents and (compute) services on nodes depends on many facts.

First have a look at scheduling

The nodes that should run the agents needing: - SchedulingKeys - l2 label set by l2 operator Neutron OVN Agent - for bgp: bgp section at neutron deployment

No file descriptors available

If you get an error similar to inotifyd: no kernel support: No file descriptors available, you have reached inotify limits and max_user_instances need to be increased on the node. You can increase it e.g. by:

echo fs.inotify.max_user_instances=1024 >> /etc/sysctl.conf && sysctl -p