eventrouter

Eventrouter

Receives Kubernetes events and turns them into Prometheus metrics.

Important Events

Good background information on watching Kubernetes events

• CrashLoopBackOff - which happens when a pod starts, crashes, starts again, and then crashes again
• ImagePullBackOff - which happens when the node is unable to retrieve the image
• Evicted - which can happen when a node determines that a pod needs to be evicted or terminated to free up some resources (CPU, memory...etc). When this happens, K8s is supposed to reschedule the pod on another node
• FailedMount / FailedAttachVolume - when pods require a persistent volume or storage, this event prevents them from starting if the storage is not accessible
• FailedSchedulingEvents - when the scheduler is not able to find a node to run your pods
• NodeNotReady - when a node cannot be used to run a pod because of an underlying issue
• Rebooted
• HostPort Conflict

TODO

• Investigate possible pruning options for message to reduce cardinality.