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Merge pull request #11219 from marekbiskup/clarify-rolling-update-procedure

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clarify rolling update procedure when # replicas is not specified
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Eric Tune 2015-07-15 12:52:10 -07:00
commit 52848062f3
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docs/user-guide/update-demo/README.md
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@ -91,9 +91,11 @@ $ kubectl rolling-update update-demo-nautilus --update-period=10s -f examples/up
The rolling-update command in kubectl will do 2 things:
1. Create a new [replication controller](../../../docs/user-guide/replication-controller.md) with a pod template that uses the new image (`gcr.io/google_containers/update-demo:kitten`)
2. Scale the old and new replication controllers until the new controller replaces the old. This will kill the current pods one at a time, spinnning up new ones to replace them.
2. Scale the old and new replication controllers until the new controller replaces the old. This will kill the current pods one at a time, spinning up new ones to replace them.
Watch the [demo website](http://localhost:8001/static/index.html), it will update one pod every 10 seconds until all of the pods have the new image.
Note that the new replication controller definition does not include the replica count, so the current replica count of the old replication controller is preserved.
But if the replica count had been specified, the final replica count of the new replication controller will be equal this number.
### Step Five: Bring down the pods