Added kubernetes evicted pods article

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+---
+title: How to delete all evicted pods in kubernetes
+description: A quick note for future reference
+date: 2021-09-01
+---
+
+## Introduction
+
+I was playing with the percona xtradb operator on one of my test clusters last week and left it in a state where mysqld errors logs were piling up over the week-end. On monday morning my nodes had their filesystems full and I discovered what kubernetes evicted pods were : pods that fail when a node's resources get constrained.
+
+My problem is : these evicted pods lingered, so I looked for a way to clean them up.
+
+## How to delete all evicted pods
+
+My google fu directed my towards several commands looking like the following, but they all had a thing or another that did not work. Here is the one I pieced together from these various resources :
+```sh
+kubectl get pods --all-namespaces -o json |
+    jq '.items[] | select(.status.reason!=null) |
+        select(.status.reason | contains("Evicted")) |
+        "kubectl -n \(.metadata.namespace) delete pod \(.metadata.name)"' |
+    xargs -n 1 bash -c
+```