From 5512fe7d461dcc2d73f4f655b754216917c75fa3 Mon Sep 17 00:00:00 2001 From: Damini Satya Date: Fri, 1 Feb 2019 23:29:24 +0530 Subject: [PATCH] Add Preemption to Glossary page (#12460) * Add Preemption to Glossary page * Change Delete -> Evict in preemption concept docs --- .../configuration/pod-priority-preemption.md | 2 +- .../en/docs/reference/glossary/Preemption.md | 17 +++++++++++++++++ 2 files changed, 18 insertions(+), 1 deletion(-) create mode 100644 content/en/docs/reference/glossary/Preemption.md diff --git a/content/en/docs/concepts/configuration/pod-priority-preemption.md b/content/en/docs/concepts/configuration/pod-priority-preemption.md index c49078ffef..297c61f1a7 100644 --- a/content/en/docs/concepts/configuration/pod-priority-preemption.md +++ b/content/en/docs/concepts/configuration/pod-priority-preemption.md @@ -202,7 +202,7 @@ Node is found that satisfies all the specified requirements of the Pod, preemption logic is triggered for the pending Pod. Let's call the pending Pod P. Preemption logic tries to find a Node where removal of one or more Pods with lower priority than P would enable P to be scheduled on that Node. If such a -Node is found, one or more lower priority Pods get deleted from the Node. After +Node is found, one or more lower priority Pods get evicted from the Node. After the Pods are gone, P can be scheduled on the Node. ### User exposed information diff --git a/content/en/docs/reference/glossary/Preemption.md b/content/en/docs/reference/glossary/Preemption.md new file mode 100644 index 0000000000..c94d9a3a3e --- /dev/null +++ b/content/en/docs/reference/glossary/Preemption.md @@ -0,0 +1,17 @@ +--- +title: Preemption +id: Preemption +date: 2019-01-31 +full_link: https://kubernetes.io/docs/concepts/configuration/pod-priority-preemption/#preemption +short_description: > + Preemption logic in Kubernetes helps a pending Pod to find a suitable Node by evicting low priority Pods existing on that Node. + +aka: +tags: +- operation +--- + Preemption logic in Kubernetes helps a pending Pod to find a suitable Node by evicting low priority Pods existing on that Node. + + + +If a Pod cannot be scheduled, the scheduler tries to [preempt](https://kubernetes.io/docs/concepts/configuration/pod-priority-preemption/#preemption) lower priority Pods to make scheduling of the pending Pod possible.