kubectl autocompletion on windows & git bash

Hits: 24

Write bash completion code to a file

kubectl completion bash > ~/.kube/completion.bash.inc

and source it from .bash_profile

printf "
# Kubectl shell completion
source '$HOME/.kube/completion.bash.inc'
" >> $HOME/.bash_profile

load the kubectl completion for bash in to current shell

source $HOME/.bash_profile

How to develop PHP applications on Local Kubernetes with Helm

Hits: 35

Dont Worry! It is Very Easy.. πŸ™‚

Install the Helm CLI and k3s(/or minikube) as kubernetes before the begin.

  1. Create Project Tree with empty File Content like so:
.
β”œβ”€β”€ Chart.yaml
β”œβ”€β”€ project
β”‚   └── index.php
β”œβ”€β”€ templates
β”‚   β”œβ”€β”€ deployment.yaml
β”‚   β”œβ”€β”€ ingress.yaml
β”‚   β”œβ”€β”€ pvc.yaml
β”‚   β”œβ”€β”€ pv.yaml
β”‚   └── service.yaml
└── values.yaml

now let’s fill in the files.

Read more

Chart.yaml

apiVersion: v2
name: myfirstlocalphpwithkubernetes
description: A Helm chart for local PHP Development on local Kubernetes

# A chart can be either an 'application' or a 'library' chart.
type: application

# This is the chart version. This version number should be incremented each time you make changes
# to the chart and its templates, including the app version.
version: 0.1.0
# This is the version number of the application being deployed. This version number should be
# incremented each time you make changes to the application. 
appVersion: "1.16.0"

project/index.php

<?php

echo "My First local PHP with Kubernetes via Helm";

templates/deployment.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: {{ .Release.Name }}-deployment
  labels:
        app: {{ .Release.Name }}-php
spec:
  selector:
    matchLabels:
      app: {{ .Release.Name }}-php
  template:
    metadata:
      labels:
        app: {{ .Release.Name }}-php
    spec:
      containers:
      - image: {{ .Values.image.name }}:{{ .Values.image.tag }}
        name: {{ .Release.Name }}-php
        imagePullPolicy: Always
        ports:
          - containerPort: 80
        volumeMounts:
          - name: {{ .Release.Name }}-php-storage
            mountPath: {{ .Values.mountPath }}
      volumes:
        - name: {{ .Release.Name }}-php-storage
          persistentVolumeClaim:
            claimName: {{ .Release.Name }}-pvc-php

templates/ingress.yaml

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: {{ .Release.Name }}-ingress
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /
spec:
  ingressClassName: nginx-example
  rules:
  - host: {{ .Values.hostname }}
    http:
      paths:
      - path: /
        pathType: Prefix
        backend:
          service:
            name: {{ .Release.Name }}-php-service
            port:
              number: 80

template/pv.yaml

apiVersion: v1
kind: PersistentVolume
metadata:
  name:  pv-{{ .Release.Name }}-php
  labels:
    type: local
spec:
  storageClassName: manual
  capacity:
    storage: 10Gi
  accessModes:
    - ReadWriteOnce
  hostPath:
    path: {{ .Values.hostPath }}

template/pvc.yaml

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
    name: {{ .Release.Name }}-pvc-php
spec:
    storageClassName: manual
    accessModes:
        - ReadWriteOnce
    resources:
        requests:
            storage: 1Gi

template/service.yaml

apiVersion: v1
kind: Service
metadata:
  name: {{ .Release.Name }}-php-service
spec:
  type: LoadBalancer
  selector:
    app: {{ .Release.Name }}-php
  ports:
      # By default and for convenience, the `targetPort` is set to the same value as the `port` field.
    - port: 80
      targetPort: 80
      # Optional field

values.yaml

hostname: 'simple-php.local'
mountPath: 'var/www/html/'
hostPath: '/home/projects/myfirstlocalphpwithkubernetes/project'
image:
  name: php
  tag: 8.1-apache

and let’s install with helm

d8dev@d8devs:~/projects/myfirstlocalphpwithkubernetes$ helm install -f values.yaml myfirstlocalphp .

Add hostname (simple-php.local) a.k.a domain in your /etc/hosts with any text editor.

My /etc/hosts looking so;

d8dev@d8devs:~/projects/myfirstlocalphpwithkubernetes$ cat /etc/hosts
127.0.0.1       localhost
127.0.1.1       simple-php.local
......
.....

And check the domain in your browser with slash ( http://simple-php.local/ )

Enjoy!

CNAME (alias) Check for Domain/-s via Bash Script

Hits: 179

#!/bin/bash
#set -x

print_usage() {
  printf "Usage: aliastest.sh -a alis-domain.tld -d domain.tld domain2.tld" 
}

# Get the options
while getopts ":h:a:d:" option; do
   case $option in
      h) # display Help
         print_usage
         exit;;
      a) # The alias hostname for check
         hostname=$OPTARG
         ;;
      d) # Domain or domains
         domains=$OPTARG
         ;;
   esac
done

for domain in $domains
do
        echo "Check for $domain:" 
        echo "-------------------" 
        CNAME=$(dig +short CNAME $domain)
        if [ "${CNAME}" == "${hostname}." ]; then
                echo "$domain is alias for $hostname" 
        else
                echo "$domain is NOT alias for $hostname" 

        fi
done