Kubernetes: Load multiple config files

1. KUBECONFIG.md

Kubernetes: Load multiple config files

Add this line in your .bashr or .zshrc

## Kubernetes: Load config files dinamically (conf.yml)
export KUBECONFIG=$(find $HOME/.kube -name "*.conf.yml" -print0 | tr '\0' ':' | sed 's/:$//')

Then reload it

 source ~/.bashrc
#or
 source ~/.zshrc

Warning

Remember to reload your shell configuration or environment after adding any .conf.yml files to the ~/.kube path to ensure the changes take effect. You can do this by restarting your terminal session or sourcing your shell's configuration file

dev-cluster.conf.yml

apiVersion: v1
clusters:
- cluster:
    certificate-authority-data: your-certificate-authority-data-base64
    server: https://kubernetes.docker.internal:6443
  name: docker-desktop-dev
contexts:
- context:
    cluster: docker-desktop-dev
    user: docker-desktop-dev
  name: docker-desktop-dev
current-context: ""
kind: Config
preferences: {}
users:
- name: docker-desktop-dev
  user:
    client-certificate-data: your-client-certificate-data-base64
    client-key-data: your-client-key-data-base64

full-cluster.conf.yml

apiVersion: v1
clusters:
- cluster:
    certificate-authority-data: your-certificate-authority-data
    server: https://kubernetes.docker.internal:6443
  name: docker-desktop
contexts:
- context:
    cluster: docker-desktop
    namespace: dev
    user: docker-desktop
  name: docker-desktop-dev
- context:
    cluster: docker-desktop
    namespace: prd
    user: docker-desktop
  name: docker-desktop-prd
current-context: ""
kind: Config
preferences: {}
users:
- name: docker-desktop
  user:
    client-certificate-data: your-client-certificate-data
    client-key-data: your-client-key-data

load-kubeconfig.sh

#!/bin/bash

# Check if an argument has been passed
if [ -z "$1" ]; then
  echo "❌ Usage: $0 <file-kubeconfig.yml>"
  exit 1
fi

KUBECONFIG_FILE="$1"

# Check if the file exists
if [ ! -f "$KUBECONFIG_FILE" ]; then
  echo "❌ Error: File '$KUBECONFIG_FILE' not found."
  exit 1
fi

echo "🔄 Loading '$KUBECONFIG_FILE' in ~/.kube/config..."

# Copy the file to the global config of kubectl
cp "$KUBECONFIG_FILE" ~/.kube/config

# Check if the change was successful
if [ $? -eq 0 ]; then
  CURRENT_CLUSTER=$(kubectl config view --minify -o jsonpath='{.clusters[0].name}' 2>/dev/null)

  echo "✅ Configuration loaded correctly from '$KUBECONFIG_FILE'."

  if [ -n "$CURRENT_CLUSTER" ]; then
    echo "🌐 Current cluster: '$CURRENT_CLUSTER'."
  else
    echo "⚠️ Warning: Could not determine the current cluster. Verify the kubeconfig."
  fi
else
  echo "❌ Error copying the file."
  exit 1
fi

prd-cluster.conf.yml

apiVersion: v1
clusters:
- cluster:
    certificate-authority-data: your-certificate-authority-data-base64
    server: https://kubernetes.docker.internal:6443
  name: docker-desktop-prd
contexts:
- context:
    cluster: docker-desktop-prd
    user: docker-desktop-prd
  name: docker-desktop-prd
current-context: ""
kind: Config
preferences: {}
users:
- name: docker-desktop-prd
  user:
    client-certificate-data: your-client-certificate-data-base64
    client-key-data: your-client-key-data-base64