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 | + | apiVersion: v1 |
| − | metadata: | + | [[kind: Service]] |
| − | + | metadata: | |
| − | + | name: nginx | |
| − | + | labels: | |
| − | spec: | + | app: nginx |
| − | + | spec: | |
| − | + | ports: | |
| − | + | - port: 80 | |
| − | + | name: web | |
| − | + | clusterIP: None | |
| − | + | selector: | |
| − | --- | + | app: nginx |
| − | apiVersion: apps/v1 | + | --- |
| − | kind: StatefulSet | + | apiVersion: apps/v1 |
| − | metadata: | + | [[kind: StatefulSet]] |
| − | + | metadata: | |
| − | spec: | + | 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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