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Bug
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Resolution: Done-Errata
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Minor
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4.14.0
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+
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Informational
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No
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False
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N/A
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Release Note Not Required
Description of problem:
The statefulset thanos-ruler-user-workload no serviceName. As the document described, the serviceName is a must for Statefulset. I'm not sure if we need service here, but one question, if we don't need service, why not use a regular Deployment? Thanks!
MacBook-Pro:k8sgpt jianzhang$ oc explain statefulset.spec.serviceName
KIND: StatefulSet
VERSION: apps/v1FIELD: serviceName <string>DESCRIPTION:
serviceName is the name of the service that governs this StatefulSet. This
service must exist before the StatefulSet, and is responsible for the
network identity of the set. Pods get DNS/hostnames that follow the
pattern: pod-specific-string.serviceName.default.svc.cluster.local where
"pod-specific-string" is managed by the StatefulSet controller.
MacBook-Pro:k8sgpt jianzhang$ oc get statefulset -n openshift-user-workload-monitoring -o=jsonpath={.spec.serviceName}
MacBook-Pro:k8sgpt jianzhang$
MacBook-Pro:k8sgpt jianzhang$ oc get statefulset -n openshift-user-workload-monitoring
NAME READY AGE
prometheus-user-workload 2/2 4h44m
thanos-ruler-user-workload 2/2 4h44m
MacBook-Pro:k8sgpt jianzhang$ oc get svc -n openshift-user-workload-monitoring
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
prometheus-operated ClusterIP None <none> 9090/TCP,10901/TCP 4h44m
prometheus-operator ClusterIP None <none> 8443/TCP 4h44m
prometheus-user-workload ClusterIP 172.30.46.204 <none> 9091/TCP,9092/TCP,10902/TCP 4h44m
prometheus-user-workload-thanos-sidecar ClusterIP None <none> 10902/TCP 4h44m
thanos-ruler ClusterIP 172.30.110.49 <none> 9091/TCP,9092/TCP,10901/TCP 4h44m
thanos-ruler-operated ClusterIP None <none> 10902/TCP,10901/TCP 4h44m
Version-Release number of selected component (if applicable):
MacBook-Pro:k8sgpt jianzhang$ oc get clusterversion NAME VERSION AVAILABLE PROGRESSING SINCE STATUS version 4.14.0-0.nightly-2023-05-31-080250 True False 7h30m Cluster version is 4.14.0-0.nightly-2023-05-31-080250
How reproducible:
always
Steps to Reproduce:
1. Install OCP 4.14 cluster. 2. Check cluster's statefulset instances or run `k8sgpt analyze -d` 3.
Actual results:
MacBook-Pro:k8sgpt jianzhang$ k8sgpt analyze -d Service nfs-provisioner/example.com-nfs does not exist AI Provider: openai 0 openshift-user-workload-monitoring/thanos-ruler-user-workload(thanos-ruler-user-workload) - Error: StatefulSet uses the service openshift-user-workload-monitoring/ which does not exist. Kubernetes Doc: serviceName is the name of the service that governs this StatefulSet. This service must exist before the StatefulSet, and is responsible for the network identity of the set. Pods get DNS/hostnames that follow the pattern: pod-specific-string.serviceName.default.svc.cluster.local where "pod-specific-string" is managed by the StatefulSet controller.
Expected results:
There is the serviceName for statefulset.
Additional info:
