Ansible Variable Lab & Excercise – Part 6
Assigment 1 – Create a playbook and setup a webserver(httpd) and use httpd as a variable decalared in role var file Assigment 2 – Create a playbook…
Ansible Variable Lab & Excercise – Part 5
Assigment 1 – Create a playbook and setup a webserver(httpd) and use httpd as a variable decalared in inventory. Assigment 2 – Create a playbook and setup…
Understanding the difference between AWS Root, Administrator & Power User?
The AWS Account Root User When you first create an Amazon Web Services (AWS) account, you begin with a single sign-in identity that has complete access to…
Understanding about Amazon EC2 Key Pairs
Amazon EC2 uses public–key cryptography to encrypt and decrypt login information. Amazon EC2 stores the public key only, and you store the private key. The public and…
Limitations of volumes you can attach to one aws ec2 instance?
Linux-Specific Volume Limits – 40 volumes Windows-Specific Volume Limits – AWS PV – 26 Citrix PV – 26 Red Hat PV – 17 Instance Type Limits C5,…
Terraform Variables and Configuration explained – 5 mins reading!
There are broadly 3 ways to configure/declare variables in Terraform. This section will focus on only on Input variables and Environment variables. Input variables Environment variables…
How to access Ansible remote machine using SSH user and key?
How to access Ansible remote machine using SSH user and key? There are following ways, you can autheticte linux remote server using Ansible. Method 1 – Password…
Ansible execution connection type
Ansible executes playbooks in the remote server using following connection type. To change the connection type, you need to pass host-specific parameter ansible_connection=<connector>, the connection type can…
How to Autoscale pods based on CPU/Memory in Kubernetes?
CPU Based Scaling With Horizontal Pod Autoscaling, Kubernetes automatically scales the number of pods in a replication controller, deployment or replica set based on observed CPU utilisation….
What is Gitlab and how its useful in DevOps?
Intially, GitLab was introduced as a web-based Git-repository manager providing hositing solutions for git repo along with Wiki and Issues tracking. Later, GitLab become the single application…
Setup Artifactory pro 6.1.0 using Docker containtainer
Step 1 – Register a free account here. https://bintray.com/ Step 2 – Login and Click on the your “username” right top corner and go to “edit profile”…
Copy a files from jenkins server to jenkins node/slave using pipeline plugins
Workarond 1 – Try to use stash/unstash, but it is bad for large files. [code]node(‘master’) {dir(‘/path/on/master/1’) {stash ‘master-stuff’}}node(‘slave’) {dir(‘/path/on/slave/1’) {unstash ‘master-stuff’}dir(‘/path/on/slave/2’) {stash ‘slave-stuff’}}node(‘master’) {dir(‘/path/on/master/2’) {unstash ‘slave-stuff’}} [/code]…
Perforce Broker aka Helix Broker defined!
The Perforce Broker (P4Broker) enables you to restrict the commands that can be executed, or redirect specific commands to alternate (replica or edge) Perforce servers. The Perforce…
Helix Server Perforce Trigger Quick Start Guide
What is Perforce Trigger? Helix Server supports triggers which are user-written programs or scripts that are called when certain operations are performed. Examples of operations that might…
Helix Core Trigger script type Reference Guide
Each line in the trigger table has four fields. Field Meaning name The user-defined name of the trigger. A run of the same trigger name on…
Helix Core Trigger script variables Reference Guide
Use the following variables in the command field to pass data to a trigger script: Argument Description Available for type %action% Either null or a string reflecting an…
How to monitor Perforce Server (Helix Core Server – p4D)
There are various ways you can monitor Perforce Server (Helix Core Server – p4D). Method 1 – Monitoring the Perforce Server disk space Use the p4 diskspace…
Docker Tutorials: Difference between Docker Load and Docker Import
If you want to “flatten” an image and avoid the history which has multiple layers, docker export and import is the best way to do that. docker…
Kubeadm Web References & Cheatsheet
https://kubernetes.io/docs/setup/independent/install-kubeadm/https://kubernetes.io/docs/setup/independent/create-cluster-kubeadmhttps://kubernetes.io/docs/setup/independent/troubleshooting-kubeadm/https://kubernetes.io/docs/setup/independent/high-availability/https://kubernetes.io/docs/reference/setup-tools/kubeadm/kubeadm/https://kubernetes.io/docs/setup/independent/create-cluster-kubeadm/#tear-downhttps://kubernetes.io/docs/concepts/cluster-administration/addons/
List of Best Alternatives of Kubernetes
Here are some of the known best alternative of Kubernetes which incudes. Docker Swarm A swarm is a group of machines that are running Docker and joined…
Alternative of Docker in Kubernetes
Since v1.6.0, Kubernetes has enabled the use of CRI, Container Runtime Interface, by default. The container runtime used by default is Docker, which is enabled through the…
How to troubleshoot Docker Server(daemon) and Containers?
How to troubleshoot Docker Server(daemon) and Containers? There are following way using troubleshooting of Docker Server and Containers can be done. If you are running your container…
Lets understand about Helix Core in 2 mins!
Helix Core (P4D) is version control system introduced in 1995 and its based on client application and server application communicating over a TCP/IP connection. A full version…
Lets know about Perforce Company and its product/Services.
Perforce, aka Perforce Software, is a Minneapolis, Minnesota-based developer of software used for Application development. The software is sold under the Helix and Hansoft brand names. In January…
Understanding the Update API in Elasticsearch
The update API allows to update(also allows to delete, or ignore the operation). a document based on a script provided. The operation gets the document from the…
Understanding Elasticsearch Index Mapping & Schema
A schema is a description of one or more fields that describes the document type and how to handle the different fields of a document. The schema…
Find out elastic Search health using _cat/health
To check elasticsearch cluster health by using (CURL) and Cluster API “cat” provieded by elasticsearch The cat API print the info in JSON format, compact and aligned…
Understanding Elasticsearch Keywords and Terminology
Understanding Elasticsearch Keywords and Terminology Elasticsearch Terminology Description Cluster “A cluster is a collection of one or more nodes (servers) that together holds your entire data and…
Crash Course of Elasticsearch in 10 mins
What is Elasticsearch? Elasticsearch is fast, horizontally scalable open source search engine. It provides HTTP API for storing and indexing JSON documents and with default configuration it…