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Reimplement PR #4339

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Andrew Chen
2017-08-01 02:16:30 -07:00
committed by Andrew Chen
parent 6ec54a096e
commit 72508c26fe
2 changed files with 3 additions and 5 deletions
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docs/concepts/workloads/pods/disruptions.md
+1 -3
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@@ -183,9 +183,7 @@ At some point, the pods terminate, and the cluster look like this:
At this point, if an impatient cluster administrator tries to drain `node-2` or At this point, if an impatient cluster administrator tries to drain `node-2` or
`node-3`, the drain command will block, because there are only 2 available `node-3`, the drain command will block, because there are only 2 available
pods for the deployment, and its PDB requires at least 2. After some time pods for the deployment, and its PDB requires at least 2. After some time passes, `pod-d` becomes available.
asses, `pod-d` becomes available.
The cluster state now looks like this: The cluster state now looks like this:
docs/tasks/administer-cluster/safely-drain-node.md
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@@ -83,7 +83,7 @@ For example, if you have a StatefulSet with three replicas and have
set a `PodDisruptionBudget` for that set specifying `minAvailable: set a `PodDisruptionBudget` for that set specifying `minAvailable:
2`. `kubectl drain` will only evict a pod from the StatefulSet if all 2`. `kubectl drain` will only evict a pod from the StatefulSet if all
three pods are ready, and if you issue multiple drain commands in three pods are ready, and if you issue multiple drain commands in
parallel, Kubernetes will respect the PodDisruptionBudget an ensure parallel, Kubernetes will respect the PodDisruptionBudget and ensure
that only one pod is unavailable at any given time. Any drains that that only one pod is unavailable at any given time. Any drains that
would cause the number of ready replicas to fall below the specified would cause the number of ready replicas to fall below the specified
budget are blocked. budget are blocked.
@@ -91,7 +91,7 @@ budget are blocked.
## The Eviction API ## The Eviction API
If you prefer not to use [kubectl drain](/docs/user-guide/kubectl/{{page.version}}/#drain) (such as If you prefer not to use [kubectl drain](/docs/user-guide/kubectl/{{page.version}}/#drain) (such as
to avoid calling to an external command, or to get finer control over over the pod to avoid calling to an external command, or to get finer control over the pod
eviction process), you can also programmatically cause evictions using the eviction API. eviction process), you can also programmatically cause evictions using the eviction API.
You should first be familiar with using [Kubernetes language clients](/docs/tasks/administer-cluster/access-cluster-api/#programmatic-access-to-the-api). You should first be familiar with using [Kubernetes language clients](/docs/tasks/administer-cluster/access-cluster-api/#programmatic-access-to-the-api).