count pods by label

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Fri Oct 15 2021 13:56:53 GMT+0000 (Coordinated Universal Time)

kubectl get pods -l env=dev --no-headers | wc -l

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k8s

@mkhaired

setup autocomplete in bash Alias kubectl count pods by label Namespaces | Kubernetes

#k8s #docker #tools

GitHub - rchakode/realopinsight: Federated operations visualization over Kubernetes®, Nagios®/Centreon®, Zabbix®, and more.

$ docker run -d \
  --name realopinsight \
  --network host \
  --publish 4583:4583 \
  rchakode/realopinsight

#k8s

Kubernetes Cheat Sheet

# Display the list of context
kubectl config get-contexts   
# Display the current-context
kubectl config current-context
# Change context to my-cluster-name
kubectl config use-context my-cluster-name
# Get nodes
kubectl get nodes
# Get pods
kubectl get pods
# Execute bash in a specific pod
kubectl exec -it pod-name -- /bin/bash
# Inspect env values
kubectl exec pod-name -- env

#k8s #kubernetes

setup autocomplete in bash

# setup autocomplete in bash into the current shell, bash-completion package should be installed first.
source <(kubectl completion bash) 
# add autocomplete permanently to your bash shell.
echo "source <(kubectl completion bash)" >> ~/.bashrc

#k8s #kubernetes

Alias kubectl

alias k=kubectl
complete -F __start_kubectl k

#k8s

count pods by label

kubectl get pods -l env=dev --no-headers | wc -l

#powershell #k8s #spn #reset #expired #expire

Reset the SPN of a K8s cluster

$RG = "di-platform-dev-rg-execution"
$NAME = "di-platform-dev-k8s-exe"

$SP_ID=$(az aks show --resource-group "$RG" --name "$NAME" \
    --query servicePrincipalProfile.clientId -o tsv)

az ad sp credential list --id "$SP_ID" --query "[].endDate" -o tsv

$SP_ID=$(az aks show --resource-group "$RG" --name "$NAME" \
    --query servicePrincipalProfile.clientId -o tsv)

$SP_SECRET=$(az ad sp credential reset --name "$SP_ID" --query password -o tsv)

az aks update-credentials \
    --resource-group "$RG" \
    --name $NAME" \
    --reset-service-principal \
    --service-principal "$SP_ID" \
    --client-secret "$SP_SECRET"

#k8s #shell #pod

Get a shell on a running container in a POD

kubectl exec --stdin --tty <<PODNAME>>> -n cnext-di-tst  -- /bin/bash

#bash #k8s #docker

k8s on raspberry permenent

docker run --privileged -idt kindest/node:v1.21.2

#k8s #docker #bash

Exec to pod

docker exec -it <container_id> bash

count pods by label

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