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 == | == Official example == | ||
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+ | 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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