Difference between revisions of "StatefulSets"
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| + | [[StatefulSet]] | ||
| + | * https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/ | ||
| + | |||
| + | * <code>[[kubectl get statefulsets]]</code> | ||
| + | * <code>[[kubectl describe statefulsets]]</code> | ||
| + | |||
| + | kubectl get statefulsets -n your_namespace | ||
| + | NAME READY AGE | ||
| + | your-elasticsearch-master 0/2 2y88d | ||
| − | + | 33m Warning [[CalculateExpectedPodCountFailed]] poddisruptionbudget/xxxx-[[pdb]] Failed to calculate the number of expected pods: statefulsets.apps does not implement the scale subresource | |
| + | |||
| + | |||
| + | == Official example == | ||
| + | |||
| + | apiVersion: v1 | ||
| + | [[kind: Service]] | ||
| + | metadata: | ||
| + | name: nginx | ||
| + | labels: | ||
| + | app: nginx | ||
| + | spec: | ||
| + | ports: | ||
| + | - port: 80 | ||
| + | name: web | ||
| + | clusterIP: None | ||
| + | selector: | ||
| + | app: nginx | ||
| + | --- | ||
| + | apiVersion: apps/v1 | ||
| + | [[kind: StatefulSet]] | ||
| + | metadata: | ||
| + | name: web | ||
| + | spec: | ||
| + | selector: | ||
| + | matchLabels: | ||
| + | app: nginx # has to match .spec.template.metadata.labels | ||
| + | serviceName: "nginx" | ||
| + | replicas: 3 # by default is 1 | ||
| + | minReadySeconds: 10 # by default is 0 | ||
| + | template: | ||
| + | metadata: | ||
| + | labels: | ||
| + | app: nginx # has to match .spec.selector.matchLabels | ||
| + | spec: | ||
| + | [[terminationGracePeriodSeconds]]: 10 | ||
| + | containers: | ||
| + | - name: nginx | ||
| + | image: k8s.gcr.io/nginx-slim:0.8 | ||
| + | ports: | ||
| + | - containerPort: 80 | ||
| + | name: web | ||
| + | [[volumeMounts:]] | ||
| + | - name: www | ||
| + | [[mountPath:]] /usr/share/nginx/html | ||
| + | [[volumeClaimTemplates:]] | ||
| + | - metadata: | ||
| + | name: www | ||
| + | spec: | ||
| + | accessModes: [ "ReadWriteOnce" ] | ||
| + | storageClassName: "my-storage-class" | ||
| + | resources: | ||
| + | requests: | ||
| + | storage: 1Gi | ||
| + | == Related == | ||
| + | * [[Peloton]] | ||
| + | * <code>[[kubectl rollout]]</code> | ||
| + | * [[Elastic Cloud on Kubernetes (ECK)]] (May 2019) | ||
| + | * [[Kubernetes storage]] | ||
== See also == | == See also == | ||
| − | * {{ | + | * {{StatefulSets}} |
| + | * {{Kubernetes workloads}} | ||
[[Category:K8s]] | [[Category:K8s]] | ||
Latest revision as of 08:05, 24 July 2024
kubectl get statefulsets -n your_namespace NAME READY AGE your-elasticsearch-master 0/2 2y88d
33m Warning CalculateExpectedPodCountFailed poddisruptionbudget/xxxx-pdb Failed to calculate the number of expected pods: statefulsets.apps does not implement the scale subresource
Official example[edit]
apiVersion: v1 kind: Service metadata: name: nginx labels: app: nginx spec: ports: - port: 80 name: web clusterIP: None selector: app: nginx --- apiVersion: apps/v1 kind: StatefulSet metadata: name: web spec: selector: matchLabels: app: nginx # has to match .spec.template.metadata.labels serviceName: "nginx" replicas: 3 # by default is 1 minReadySeconds: 10 # by default is 0 template: metadata: labels: app: nginx # has to match .spec.selector.matchLabels spec: terminationGracePeriodSeconds: 10 containers: - name: nginx image: k8s.gcr.io/nginx-slim:0.8 ports: - containerPort: 80 name: web volumeMounts: - name: www mountPath: /usr/share/nginx/html volumeClaimTemplates: - metadata: name: www spec: accessModes: [ "ReadWriteOnce" ] storageClassName: "my-storage-class" resources: requests: storage: 1Gi
Related[edit]
See also[edit]
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