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Update docs for removing UniqueLabelKey from deployment spec

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This commit is contained in:
Janet Kuo
2016-02-05 17:20:45 -08:00
parent bb0c5fea0e
commit 38ae5785dc
2 changed files with 7 additions and 28 deletions
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18
docs/user-guide/deployments.md
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@@ -47,7 +47,6 @@ Documentation for other releases can be found at
- [Pod Template](#pod-template)
- [Replicas](#replicas)
- [Selector](#selector)
- [Unique Label Key](#unique-label-key)
- [Strategy](#strategy)
- [Recreate Deployment](#recreate-deployment)
- [Rolling Update Deployment](#rolling-update-deployment)
@@ -153,7 +152,7 @@ Running ```kubectl get rc``` and ```kubectl get pods``` will show the replicatio
$ kubectl get rc
CONTROLLER CONTAINER(S) IMAGE(S) SELECTOR REPLICAS AGE
REPLICAS AGE
deploymentrc-1975012602 nginx nginx:1.7.9 deployment.kubernetes.io/podTemplateHash=1975012602,app=nginx 3 2m
deploymentrc-1975012602 nginx nginx:1.7.9 pod-template-hash=1975012602,app=nginx 3 2m
```
```console
@@ -237,8 +236,8 @@ which it scaled up to 3 replicas, and has scaled down the old RC to 0 replicas.
```console
kubectl get rc
CONTROLLER CONTAINER(S) IMAGE(S) SELECTOR REPLICAS AGE
deploymentrc-1562004724 nginx nginx:1.9.1 deployment.kubernetes.io/podTemplateHash=1562004724,app=nginx 3 5m
deploymentrc-1975012602 nginx nginx:1.7.9 deployment.kubernetes.io/podTemplateHash=1975012602,app=nginx 0 7m
deploymentrc-1562004724 nginx nginx:1.9.1 pod-template-hash=1562004724,app=nginx 3 5m
deploymentrc-1975012602 nginx nginx:1.7.9 pod-template-hash=1975012602,app=nginx 0 7m
```
Running `get pods` should now show only the new pods:
@@ -335,17 +334,6 @@ template is different than `.spec.template` or if the total number of such pods
exceeds `.spec.replicas`. It will bring up new pods with `.spec.template` if
number of pods are less than the desired number.
### Unique Label Key
`.spec.uniqueLabelKey` is an optional field specifying key of the selector that
is added to existing RCs (and label key that is added to its pods) to prevent
the existing RCs to select new pods (and old pods being selected by new RC).
Users can set this to an empty string to indicate that the system should
not add any selector and label. If unspecified, the system uses
`deployment.kubernetes.io/podTemplateHash`.
The value of this key is the hash of `.spec.template`.
No label is added if this is set to the empty string.
### Strategy
`.spec.strategy` specifies the strategy used to replace old pods by new ones.