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StatefulSet 1.9 updates. #6550

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merged 4 commits into from
Dec 11, 2017
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StatefulSet 1.9 updates. #6550

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83167be
updates sts concept and tutorials to use 1.9 apps/v1
Dec 4, 2017
9a9592f
Update statefulset.md
zacharysarah Dec 5, 2017
dc25c51
clarify pod name label
Dec 11, 2017
48816e0
Merge branch 'sts-concept-1.9' of github.com:kow3ns/kubernetes.github…
Dec 11, 2017
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10 changes: 8 additions & 2 deletions docs/concepts/workloads/controllers/statefulset.md
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Expand Up @@ -11,7 +11,7 @@ title: StatefulSets

{% capture overview %}
**StatefulSet is the workload API object used to manage stateful applications.
StatefulSets are beta in 1.8.**
StatefulSets are stable (GA) in 1.9.**

{% glossary_definition term_id="statefulset" length="all" %}
{% endcapture %}
Expand Down Expand Up @@ -66,7 +66,7 @@ spec:
selector:
app: nginx
---
apiVersion: apps/v1beta2
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: web
Expand Down Expand Up @@ -152,6 +152,12 @@ PersistentVolume Claims. Note that, the PersistentVolumes associated with the
Pods' PersistentVolume Claims are not deleted when the Pods, or StatefulSet are deleted.
This must be done manually.

### Pod Name Label

When the StatefulSet controller creates a Pod, it adds a label, `statefulset.kubernetes.io/pod-name`,
that is set to the name of the Pod. This label allows you to attach an individual Service to
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by "individual", do you mean "distinct" or "different"?

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@kow3ns Bumping for action on docs review

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@foxish foxish Dec 11, 2017 •
edited
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This should be "different" I think.

each Pod in the StatefulSet.

## Deployment and Scaling Guarantees

* For a StatefulSet with N replicas, when Pods are being deployed, they are created sequentially, in order from {0..N-1}.
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2 changes: 1 addition & 1 deletion docs/tasks/run-application/mysql-statefulset.yaml
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@@ -1,4 +1,4 @@
apiVersion: apps/v1beta2 # for versions before 1.8.0 use apps/v1beta1
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: mysql
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2 changes: 1 addition & 1 deletion docs/tutorials/stateful-application/cassandra/cassandra-statefulset.yaml
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@@ -1,4 +1,4 @@
apiVersion: apps/v1beta2
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: cassandra
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2 changes: 1 addition & 1 deletion docs/tutorials/stateful-application/web.yaml
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Expand Up @@ -13,7 +13,7 @@ spec:
selector:
app: nginx
---
apiVersion: apps/v1beta2 # for versions before 1.8.0 use apps/v1beta1
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: web
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2 changes: 1 addition & 1 deletion docs/tutorials/stateful-application/webp.yaml
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Expand Up @@ -13,7 +13,7 @@ spec:
selector:
app: nginx
---
apiVersion: apps/v1beta2 # for versions before 1.8.0 use apps/v1beta1
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: web
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2 changes: 1 addition & 1 deletion docs/tutorials/stateful-application/zookeeper.yaml
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Expand Up @@ -38,7 +38,7 @@ spec:
app: zk
maxUnavailable: 1
---
apiVersion: apps/v1beta2 # for versions before 1.8.0 use apps/v1beta1
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: zk
Expand Down