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kubectlでpod名のみの一覧を取得する方法

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pod名のみを取得したいときに、 kubectl get podsでは過分な情報を含むので、jsonpathでフィルターをする。

これを

$ kubectl get pods
NAME                                     READY   STATUS      RESTARTS   AGE
hoge-788cf54966-mdk2p                   1/1     Running     0          1h
fuga-788cf54966-ngh5w                   1/1     Running     0          2h

こう

$ kubectl get pods -o=jsonpath={.items[*].metadata.name}
hoge-788cf54966-mdk2p fuga-788cf54966-ngh5w

順番にshellで処理したいときはそのままforを使う

#!/bin/bash

for name in $(kubectl get pods -o=jsonpath={.items[*].metadata.name}); do
  echo ${name}
done
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