Merge multiple kubeconfigs

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Merge multiple ~/.kube/config into one using kubectl konfig merge


1) Make a backup of your current ~/.kube/config

cp ~/.kube/config ~/.kube/config.BAK.$(date '+%Y-%m-%d_%H%M')

2) Use kubectl konfig merge for merge files:

kubectl konfig merge ~/.kube/config yournewcluster-configfile > merged_kubeconfig

3) Overwrite your old ~/.kube/config with your new file

cp merged_kubeconfig ~/.kube/config
for CLUSTER in $(rancher cluster ls | grep -v NAME | cut -d"*" -f2- | awk '{print $3}' ); do rancher cluster kubeconfig $CLUSTER > $CLUSTER.kubeconfig; done

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