Deep dive into Kubernetes Taint with node

Follwing are workload which run in a cluster’s node…. DaemonSet Deployment Pod ReplicaSet ReplicationController StatefulSet When you submit a workload,…

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Setup NFS server and use inside a Kubernetes pods in RHEL/CENTOS7

Setup a NFS server in one of the node of Kubernetes Cluster using rhel 7.X Validate NFS server is working…

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Kubernetes Configmap explained using example

Content of reverseproxy.conf Commands to execute to create configmap Example pod using configmap Validating configmap inside a pod

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Detailed explaination of joining Kubernetes Nodes aka workers in Kubernetes master?

Step 1 – Install Docker https://www.devopsschool.com/tutorial/docker/install-config/ https://www.devopsschool.com/tutorial/docker/install-config/docker-install-commuityedition-centos-rhel.html Step 2 – How to find discovery-token-ca-cert-has in kubernetes master node? Mehtod 1…

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Kubernetes PersistentVolume and PersistentVolumeClaim using NFS volume types

Save the definition to a file, for example nfs-pv.yaml, and create the PV: $ kubectl create -f nfs-pv.yaml persistentvolume “pv0001”…

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Kubernetes Errors and Solutions Database

Kubernetes minikube errors and Solutions kubeadm error – kubelet isn’t running or healthy and connection refused EKS cluster setup error:…

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How to expose multiple port in services in kubernetes or Multi-Port Services

You have two options: You could have multiple services, one for each port. As you pointed out, each service will…

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List of Free Tools for Tabbed Multiple Linux SSH / Putty sessions

PuTTY Connection Manager PuTTY Connection Manager was mentioned in the 12 PuTTY add-ons. One of the major missing features in…

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Python Resources Web References & Cheatsheet

https://www.learnbyexample.org/python/ https://www.programiz.com/python-programming/variables-datatypes https://data-flair.training/blogs/python-string/ https://www.journaldev.com/26711/python-logical-operators https://www.geeksforgeeks.org/python-list/ https://www.programiz.com/python-programming/dictionary https://www.learnbyexample.org/python-if-else-elif-statement/ https://www.programiz.com/python-programming/if-elif-else https://www.askpython.com/python/python-functions https://www.learnbyexample.org/python-functions/ https://www.learnbyexample.org/python-classes-and-objects/ https://realpython.com/courses/ https://www.learnbyexample.org/python-file-handling/ https://www.roytuts.com/python-web-application-crud-example-using-flask-and-mysql/

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What is List of Popular Editor for Python?

Visual Studio Code PyCharm Commmunity Version Thonny Atom Sublime Text 3 IDLE Online Compiler from Programiz

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How to use pip command to Python3.x instead of Python2.7?

First of all, pip is made for Python2.x and pip3 is made for Python3.x. Thus you need to select wisely…

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How to Download and Install Mysql in Macos 10

Step 1 – Download a DMG package from here https://dev.mysql.com/downloads/mysql/ Step 2 – Download a DMG package from here Click…

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List of python3 Options and arguments command lines

usage: /Library/Frameworks/Python.framework/Versions/3.8/bin/python3 [option] … [-c cmd | -m mod | file | -] [arg] … Options and arguments (and corresponding…

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List of Python Environment Variables

Here are important environment variables, which can be recognized by Python − Sr.No. Variable & Description 1 PYTHONPATHIt has a…

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Terrform Project – Assignment – Exercise – Part 2

Project 1 – Create a terraform Module in which you create a Ec2-instance RHEL7.5, Install JDK and Maven into Ec2-instance…

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Terrform Project – Assignment – Exercise – Part 1

Exercise 1 – Write a terraform configuration file to create a EC2-Instance(RHEL7.5) along assigned with newly created Keypair, Security group…

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Local Values is defined in Terraform!!!

What is local value in terraform? The local block defines one or more local variables within a module. A local…

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How to use one module’s variable in another module in terraform?

You can use outputs to accomplish this. Such as if there are 2 modules, kafka and cloudwatch. In your kafka…

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Terraform workspace explained!!!

What is Terraform workspace? Have you worked with terraform workflow? such as terraform init/plan/apply/destroy with terraform configuration file? If Yes,…

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Terraform Advance Workflow loop explained!!!

validate – Validates the Terraform files init – Init. Initialize the (local) Terraform environment. Usually executed only once per session….

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Terraform Basics Workflow loop explained!!!

init – Init. Initialize the (local) Terraform environment. Usually executed only once per session. plan – Plan. Compare the Terraform state with…

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Decide factor to write Terraform Module or not?

Terraform modules are reusable configuration units. They let you manage pieces of infrastructure as a single package you can call…

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Terraform Environment Variables Exaplained!

Terraform has many environment variables which can be used to customize various aspects of its behavior of terraform. However all…

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Terraform variable List Type Explained!!!

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Terraform variable Number Type Explained!!!

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How to run provisioners code after resources is created in terraform?

The chef, file, local-exec, puppet, remote-exec, provisioner invokes a script on a remote resource only after it is created. Thus,…

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Terraform Error: Invalid reference

Solution: Declare variable with var. such as name = “${var.reponame}” instead of name = “${reponame}”

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Terraform Error: Invalid variable name

Solution You must not use following variables. These names are reserved for meta-arguments in module configuration blocks, and cannot be declared as variable names. source version providers count for_each lifecycle depends_on locals

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Terraform Error: Failed to read ssh private key: no key found

Solutions private_key – The contents of an SSH key to use for the connection. These can be loaded from a…

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How to do Looping/Iterations in Terraform?

Resources Resources are the most important element in the Terraform language. Each resource block describes one or more infrastructure objects,…

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