Devops Gyaan Hottest Devops Technologies to learn in 2018 Ansible, Docker and Kubernetes are three hottest devops technologies and skills that I recommend devops engineers should learn in 2018.
Docker How to install Docker in Windows 10 Docker is a computer program that performs operating-system-level virtualization also known as containerization.
Devops Gyaan 7 Devops Certifications you could consider in 2018 Here is a curated list of 7 most coveted devops certification programs for 2018 by School of Devops. Includes Kubernetes, Docker, Ansible, Chef, Puppet, AWS and Jenkins Certifications.
Docker A Small Introduction to Dockerfiles For the last few blogs, we have been playing with various docker commands. This blog discusses about Dockerfile. When you want to run your app inside a container, you first need to create
Docker Docker Operations - Managing Resources In our last blog we have discussed about some useful docker commands like cp, top and rename. This post focusses on stats command and limiting resources Stats Command Docker stats command is based
Puppet Managing Nodes In Puppet Node definition provides a mapping between nodes and a list of classes to apply Node definition resides on the puppet master Its the simplest way of classifying nodes There are more options available
Puppet What is Puppet Module? Modules are the packages with manifests and supporting files Modules have 1:1 mapping with the applications Let you create a library of reusable code Module Path Modules are stored on Puppet Master.
Docker Container Operations - Docker Rename, Top and Copy In our last blog, we saw how we can play with Docker port binding. This week we will see two more useful commands which are rename, top and copy. Rename Rename command helps
Puppet What Is Puppet Manifest ? manifests are files which contain collection of resources written to achieve a specific objective have .pp extension resources in a manifest can be applied in any order Approach Find out the puppet resource
Puppet What Are Puppet Resources ? We will look into briefly for Puppet resources. Resources A resource is a statement of configuration policy that describes the desired state of a node. Block of code, declares the desired state of
Docker Container Operations - Port Mapping In the last post, we have seen the basic docker commands. This blog focuses on other useful, a litle advanced options of Docker
Puppet What Puppet Is Not ? We have seen all features and benefits of Puppet, lets have look where Puppet can not suit as best solution. Graphical Management Tool (e.g. SCCM): If you are looking for a tool
Puppet Puppet : Who is it for? Let us look into, who can use puppet and who is it for? Systems Administrators/Engineers: Who are managing systems at scale and need to install, configure, patch, monitor and maintain systems and
Puppet Where To Use Puppet You should consider using Puppet for the following purposes, Compliance and Audit: When your organization has to comply to policies and you need an ability to convert those policies into a code which
Chef Learn How To Apply Code With chef-solo Using chef-solo we can easily apply our code to node by node itself.
Chef Creating Configuration Profiles with Environments In Chef In this lab we are going to use chef's environment primitive to, Create different configuration profiles. Setup environment specific configurations. Set cookbook versioning constraints. Define cookbook versions to be used in each environment.
Chef Using Search Managing Dynamic Configurations In Chef Search is used to run a query on chef-server. To search for nodes, roles, environment and data bags. Search patterns include exact, wildcards and range. Search can be included within recipe or using
Chef How TO Create Roles In Chef Learn how to create roles in Chef DSL. And use it in small application.
Chef Deploying App on Tomcat using Chef So far you have learnt to write cookbooks, recipes and how to create data driven cookbooks. Now that you have setup tomcat, you have been tasked to write code to deploy a java
Chef How To Customize Chef Community Cookbooks Customizing Strategy Fork - Directly use the community cookbook by forking the upstream cookbook. Wrapper - Create a wrapper cookbook which calls the community cookbook and customize it, by creating a dependency. Creating
Ansible How to provision ec2-server using Ansible we know Ansible is the open source configuration management tool,and unlike Chef and Puppet, it uses a push mechanism to push the desired changes on the servers using ssh.
Chef What Is Chef Cookbook Templates? A cookbook template is an Embedded Ruby (ERB) template that is used to dynamically generate static text files. Templates are great way to manage configuration files for different environment. ERB or ERUBIS Contains
Chef How To Write Platform Specific cookbooks Writing platform specific chef cookbooks to overcome platform based errors and make cookbooks more generic.
Docker Getting Started with Docker In this blog, we will see some of the basic commands that will get us with Docker. Launching a Container To launch a container using Docker, run the following command. docker container run
Chef How To Develop Data Driven Cookbooks Once the data is taken out of the code then cookbook become generic. Generic cookbook can be used with any OS and environments.