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/ Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at…
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…
Elasticsearch Web References & Cheatsheet
Elasticsearch official documentation https://www.elastic.co/guide/en/elasticsearch/reference/6.x/index.html Very good Elasticsearch Guide on Github https://github.com/dzharii/awesome-elasticsearch Elasticsearch Official forum https://discuss.elastic.co/ Stackoverflow elasticsearch handlers http://stackoverflow.com/questions/tagged/elasticsearch Jolicode elasticsearch Cheatsheet http://elasticsearch-cheatsheet.jolicode.com/ Elasticsearch DevOpsSchool reference https://www.devopsschool.com/blog/category/elastic-stack/…
Web GUI tools for Elasticsearch cluster
elasticsearch-head is a web front end for browsing and interacting with an Elastic Search cluster. There are multiple ways of running elasticsearch-head. Running as a plugin of…
Understanding REST HTTP method – GET, POST, PUT, HEAD, DELETE in Elasticsearch
REST (Representational State Transfer) was introduced and defined in 2000 by Roy Fielding in his doctoral dissertation. REST is an architectural style for designing distributed systems. It…
What are the method to interact with Elastic Search?
Elasticsearch provides official clients for several languages—Groovy, JavaScript, .NET, PHP, Perl, Python, and Ruby—and there are numerous community-provided clients and integrations, all of which can be found…
Use of runtime variables to save into another variable using register in Ansible
Another major use of variables is running a command and using the result of that command to save the result into a variable – hosts: all…
Ansible Variable: Ansible & Ansible Tower Variable Precedence Hierarchy
Ansible & Ansible Tower Variable Precedence Hierarchy (last listed wins) Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I…
Run Ansible Adhoc commands or playbook in Local mode
If you are trying to run Ansible Adhoc commands or playbook in Local mode, these articles will help you. Ansible can’t run playbooks locally without ssh if…
Ansible Playbook Lab & Excercise – Part 4
Execution Mode – Remote Write a Ansible Playbook to create a group called “deploy” Write a Ansible Playbook to create a user called “deploy-user” which is part…
Ansible Adhoc Commands Lab & Excercise – Part 1
Program 1 – Write a Ansible Adhoc Commands to create a group called “deploy How to verify? $ more /etc/group | grep deploy Program 2 – Write…
Puppet Module Lab & Excercise – Part 1
Puppet Module Lab & Excercise – Part 1 Write a puppet module to setup a webserver(httpd) only in RHEL and use the HEREDOC to craete a html…
Puppet Program Lab & Excercise – Part 2
Puppet Program Lab & Excercise – Part 1 Write a puppet Program to install package “git”, “ntp” and wget in RHEL. Which resource declaration can help us…
Puppet Program Lab & Excercise – Part 1
Puppet Program Lab & Excercise – Part 1 Write a Puppet Program to create a file named with “file.txt” in /opt/ owner by ec2-user and execute permission?…
Enforce the JIRA issue id in a GIT commit message
Enforce the JIRA issue id in a GIT commit message This can be done by using git hooks file location at .git/hooks/commit-msg. Following are the 2 way…
Best Branching and Merging strategies in Gerrit
Best Branching and Merging strategies in Gerrit Step 1 – First Lets read this article about Best Branching and Merging strategies in git http://www.scmgalaxy.com/tutorials/best-branching-and-merging-strategies-in-git/ Step 2 –…
Best Branching and Merging strategies in git
Best Branching and Merging strategies in git Step 1 – First you need to learn the needs of branches. This is very good read. https://docs.microsoft.com/en-us/vsts/repos/tfvc/branching-strategies-with-tfvc?view=vsts Step 2…
How to revert the changes once its submitted in Gerrit
How to revert the changes once its submitted in Gerrit The Revert button is available if the change has been submitted. This Reverts the change via creating…
What is a Change and Patch set in Gerrit?
Here is the short and quick description of Gerrit key teminology. Change Every time you push a commit with a new Change-Id Gerrit allocates a new change….
How to replace Changes after the Gerrit review without changing the commit id?
How to replace Changes after the Gerrit review without changing the commit id? One of the main benefits of code review is the ability to receive and…
Git Commands Tutorials and Example: Git Fetch – Update remote branch before merge to local branch
Best practice says that before you commit in git, you need to either do git pull or git fetch/merge. However, there is a way to find out…