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Kubernetes Cheat Sheet
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| # delete all pods that are evicted | |
| kubectl get pods --all-namespaces | grep Evicted | awk '{print $2 " --namespace=" $1}' | xargs kubectl delete pod | |
| # delete all pods that are erroring and sleep a bit to avoid rate limit | |
| # you can add head or tail to work in batches | |
| kubectl get pods --all-namespaces | grep 'Evicted\|Error\|ContainerStatusUnknown' | awk '{print $2 " --namespace=" $1}' | xargs -I % sh -c '{ kubectl delete pod %; sleep 0.1; }' | |
| # print all failing pods with their describe reason of failiure | |
| NS=production | |
| IFS=$'\n' # make newlines the only separator | |
| for DEF in $(kubectl -n $NS get pods --no-headers | grep -vi 'running\|evicted\|completed') | |
| do | |
| echo "\n------------\n${DEF}" | |
| echo "${DEF}" | awk '{print $1}' | xargs kubectl -n $NS describe pod | grep -A 12 State | |
| done |
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| for n in $(kubectl get -o=name pvc,configmap,serviceaccount,secret,ingress,service,deployment,statefulset,hpa,job,cronjob) | |
| do | |
| mkdir -p $(dirname $n) | |
| kubectl get -o=yaml --export $n > $n.yaml | |
| done | |
| for n in $(kubectl -n production get -o=name sealedsecret,configmap,ingress,service,deployment,statefulset,hpa,cronjob) | |
| do | |
| mkdir -p $(dirname $n) | |
| kubectl get -o=yaml --export $n > $n.yaml | |
| done | |
| for OBJ in $(kubectl api-resources --verbs=list --namespaced -o name) | |
| do | |
| for NS in $(kubectl get namespaces --no-headers | awk '{print $1}') | |
| do | |
| mkdir -p $NS | |
| for DEF in $(kubectl -n $NS get --show-kind --ignore-not-found $OBJ -o name) | |
| do | |
| mkdir -p $(dirname $DEF) | |
| kubectl get $DEF -o yaml \ | |
| | yq eval 'del(.metadata.resourceVersion, .metadata.uid, .metadata.annotations, .metadata.creationTimestamp, .metadata.selfLink, .metadata.managedFields)' - > $DEF.yaml | |
| done | |
| done | |
| done | |
| for NS in $(kubectl get namespaces --no-headers | awk '{print $1}') | |
| do | |
| mkdir -p $NS | |
| for OBJ in $(kubectl api-resources --verbs=list --namespaced -o name) | |
| do | |
| for DEF in $(kubectl -n $NS get --show-kind --ignore-not-found $OBJ -o name) | |
| do | |
| mkdir -p $NS/$(dirname $DEF) | |
| kubectl -n $NS get $DEF -o yaml \ | |
| | kubectl neat - > $NS/$DEF.yaml | |
| done | |
| done | |
| done | |
| NS=production | |
| mkdir -p $NS | |
| for DEF in $(kubectl -n $NS get -o=name configmap,ingress,service,deployment,statefulset,hpa,cronjob,poddisruptionbudget,sealedsecret) | |
| do | |
| mkdir -p $NS/$(dirname $DEF) | |
| kubectl -n $NS get $DEF -o yaml \ | |
| | kubectl neat - > $NS/$DEF.yaml | |
| done | |
| # Sealed secret controller update | |
| kubectl get secret -n kube-system -l sealedsecrets.bitnami.com/sealed-secrets-key -o yaml >master.key | |
| NS=production | |
| mkdir -p $NS | |
| for DEF in $(kubectl -n $NS get -o=name secret,sealedsecret) | |
| do | |
| mkdir -p $NS/$(dirname $DEF) | |
| kubectl -n $NS get $DEF -o yaml \ | |
| | kubectl neat - > $NS/$DEF.yaml | |
| done |
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