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Bash

Moving

command	description
ctrl + a	Goto BEGINNING of command line
ctrl + e	Goto END of command line
ctrl + b	move back one character

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# get inactive rs 
kubectl get rs | awk '{if ($2=="0") print $0}'

# delete inactive rs 
kubectl get rs | awk '{if ($2=="0") print $1}' | xargs kubectl delete rs

# get error job 
kubectl get job | awk '{if ($2=="0/1") print $0}'

# delete error job

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kubectl get pods -n kube-system -l k8s-app=prometheus-to-sd -o=jsonpath='{range .items[*]}{.metadata.name}{"\t"}{.spec.containers[*].image}{"\n"}{end}'

https://kubernetes.io/docs/reference/kubectl/jsonpath/

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Download Audio from YouTube

-i - ignore errors

-c - continue

-t - use video title as file name

--extract-audio - extract audio track

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jq -cr '.[] | "\(.name) \(.)"'  test.json | awk '{ file=$1".json"; print $2 > file; close(file); }'

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README

Short excursion into git --track, --set-upstream and --set-upstream-to.

All examples use the aliases co for checkout and br for branch.

Setup:

$ git clone git@github.com:AKSW/OntoWiki.git

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# suspend active cronjobs
kubectl.exe get cronjob | grep False | awk '{print $1}' | xargs kubectl patch cronjob -p '{"spec" : {"suspend" : true }}'

# resume suspended cronjobs
kubectl.exe get cronjob | grep True | awk '{print $1}' | xargs kubectl patch cronjob -p '{"spec" : {"suspend" : false }}'

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schema: "1"         # Schema must match for all 
id: auth
metadata:
  name: Template to deploy auth api
variables:
- name: k8s-account
  description: kubernetes account to deploy
  type: string
  group: Deployment
- name: namespace

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initContainers:
  - name: volume-mount-hack
    image: busybox
    command: ["sh", "-c", "chown -R 200:200 /nexus"]
    volumeMounts:
    - name: <your nexus volume>
      mountPath: /nexus

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kubectl get po --all-namespaces | grep Evicted | awk '{print $2, "--namespace", $1}' | xargs kubectl delete pod