Restart all pods in K8s cluster

restart.sh

#!/bin/bash

## Usage: ./restart.sh --env staging

# Check if the --env argument is provided
if [ "$#" -ne 2 ] || [ "$1" != "--env" ]; then
    echo "Usage: $0 --env <environment>"
    exit 1
fi

ENV=$2

# Set the kubectl context based on the environment
case $ENV in
    staging)
        kubectl config use-context staging
        ;;
    production)
        kubectl config use-context production
        ;;
    *)
        echo "Invalid environment: $ENV. Available options are staging or production."
        exit 1
        ;;
esac


# Get all namespaces
namespaces=$(kubectl get namespaces -o jsonpath="{.items[*].metadata.name}")

# Loop through each namespace and restart all deployments
for namespace in $namespaces; do
    echo "Restarting deployments in namespace: $namespace"
    # Get all deployments in the namespace
    deployments=$(kubectl get deployments -n $namespace -o jsonpath="{.items[*].metadata.name}")
    
    # Loop through each deployment and perform a rollout restart
    for deployment in $deployments; do
        echo "Restarting deployment: $deployment"
        kubectl rollout restart deployment/$deployment -n $namespace
    done
done

echo "All deployments have been restarted in all namespaces."