OpenShift oneliners

# Install OpenShift 3.11 cli
brew install https://raw.githubusercontent.com/cblecker/homebrew-core/d1092419e5113b296a6b1d7ecd2bf6673d39f0a2/Formula/openshift-cli.rb

# ID = /var/lib/origin/openshift.local.volumes/plugins/kubernetes.io/cinder/mounts/[ID]
oc get pv -o json | jq -r '[.items[] | {name:.spec.claimRef.name, namespace:.spec.claimRef.namespace, volumeID:.spec.cinder.volumeID}]' | grep -n2 [ID]


# ElasticSearch get incides
oc -n openshift-logging rsh $(oc -n openshift-logging get po -l component=es -o name) es_util --query=_cat/indices -XCURL

# Fix OCP 3.11 curator
oc -n openshift-logging set image cronjob logging-curator curator=registry.redhat.io/openshift3/ose-logging-curator5:v3.11.16 && \ 
oc -n openshift-logging create job --from=cronjob/logging-curator logging-curator

# loop namespaces and get networkpolicy,egressnetworkpolicies
for ns in `oc get namespaces -o=jsonpath='{.items[*].metadata.name}'`; do
echo '--'
echo $ns
oc -n $ns get networkpolicy,egressnetworkpolicies 
echo '--'
done

# get images used inside a namespace
oc get po -o jsonpath="{..image}" |\
 tr -s '[[:space:]]' '\n' |\
 sort |\
 uniq -c

# get images used inside all namespace
for ns in `oc get ns -o jsonpath='{..metadata.name}'`; do oc -n $ns get po -o jsonpath="{..image}" |\
 tr -s '[[:space:]]' '\n' |\
 sort |\
 uniq -c; done
 
# get resource usage of all worker/compute nodes
for i in $(oc get nodes --no-headers | awk '{print $1}' | sort -V | grep compute); do echo $i && oc describe node $i | grep -A5 '^Allocated resources' ;done

# scale all dc's to one
for dc in `oc get dc  -o jsonpath='{.items[*].metadata.name}'`; do echo $dc; oc scale dc/$dc --replicas=1; done

# change all route's inside a project
for r in `oc get route -o jsonpath='{.items[*].metadata.name}'`; do
  echo $r;
  url=$(oc get route $r -o jsonpath='{..spec.host}');
  echo $url;
  oc patch route/$r -p '{"spec":{"host":"'$(echo $url | sed -e "s/dev/prod/g")'"}}';
done

# Get CPU requests/limits 
oc get dc -o custom-columns=Name:.metadata.name,CPUReq:.spec.template.spec.containers[*].resources.requests.cpu
oc get dc -o custom-columns=Name:.metadata.name,CPULimit:.spec.template.spec.containers[*].resources.limits.cpu

# Get Memory requests/limits
oc get dc -o custom-columns=Name:.metadata.name,MEMReq:.spec.template.spec.containers[*].resources.requests.memory
oc get dc -o custom-columns=Name:.metadata.name,MEMLimit:.spec.template.spec.containers[*].resources.limits.memory

# Restart all pods with CrashLoopBackOff status in cluster
oc get po -o wide --all-namespaces | grep CrashLoopBackOff| awk '{print "oc -n " $1 " delete po --wait=false " $2}' | sh


# Loop OpenShift projects and get image & imagePullPolicy
for ns in default glusterfs kube-service-catalog kube-system openshift openshift-console openshift-infra openshift-logging openshift-metrics-server openshift-node openshift-sdn openshift-template-service-broker openshift-web-console; do
  for p in `oc -n $ns get po -o=jsonpath='{..metadata.name}'`; do 
    oc -n $ns get po $p -o=jsonpath='{..spec.containers[*].image}{","}{..spec.containers[*].imagePullPolicy}{"\n"}'; 
  done
done

# wait for deployment to finish
until [ $(oc get po -l deploymentconfig=tomcat-as -o jsonpath='{..status.containerStatuses[?(@.name=="tomcat-as")].ready}') == "true" ]
do
  oc get po -l deploymentconfig=tomcat-as --no-headers
  sleep 30
done

# wait for sts to finish
until [ $(oc get sts/tomcat-as-background -o jsonpath='{.status.readyReplicas}') == "2" ]
do
  oc get po -l deploymentconfig=tomcat-as-background --no-headers
  sleep 30
done

# wait for job or pod to finish
until [ $(oc get po/tomcat-import -o jsonpath='{..status.phase}') == "Succeeded" ]
do
  oc get po/tomcat-import --no-headers
  sleep 3
done

# send test alert via prometheus
oc -n monitoring rsh -c prometheus $(oc -n monitoring get po -l app=prometheus -o name|head -n1) curl -H "Content-Type: application/json" -d '[{"labels":{"alertname":"TestAlert1"}}]' alertmanager:9093/api/v1/alerts

# get configmap value in json format
oc get cm grafana-dashboard-alertmanager-alerts -o json | jq -r ".data|.[]"

# get configmap json
oc get secret pull-secret -o json | jq -r '.data[".dockerconfigjson"]' | base64 -d | grep -c cloud.openshift.com