Dear Readers,
In this article, we will see the following Daily Tips for DevOps. 
Tip-1 : Date: 09-Dec-20 Provided By (Linkedin): Bhagyasri
History of DevOps:
👉 The word “DevOps” was coined in 2009 by Patrick Debois, who became one of its gurus.
👉 The term was formed by combining “development” and “operations,”.
👉 Which provides a starting point for understanding exactly what people typically mean when they say “DevOps”.
Tip-2 : Date: 11-Dec-20 Provided By (Linkedin): Ramesh
Traditional vs Modern Methodologies:
| Traditional | Modern |
| Waterfall Approach | Agile Approach |
| Different teams or organizational units for requirements,development,test and operations. | Multidisciplinary teams where all disciplines work together on small piece to deliver. |
| Clear separation between business and IT (Demand/Supply) | Business,Development and Operations in 1 team. |
| Release software 2 or 3 times a year | Release multiple times a day |
| Budget/cost driven | Value stream driven |
Tip-3 : Date: 12-Dec-20 Provided By (Linkedin): Ramesh
DevOps Uses:
👉 Predictability
👉 Reproducibility
👉 Maintainability
👉 Time to market
👉 Greater Quality
👉 Reduced Risk
👉 Resiliency
👉 Cost Efficiency
👉 Breaks larger code base into small pieces:
Tip-4 : Date: 15-Dec-20 Provided By (Linkedin): Bhagyasri
Stages of DevOps LifeCycle:
👉 Continuous Development
👉 Continuous Testing
👉 Continuous Integration
👉 Continuous Deployment
👉 Continuous Monitoring
Tip-5 : Date: 16-Dec-20 Provided By (Linkedin): Ramesh
DevOps Work Flow :
Tip-6 : Date: 18-Dec-20 Provided By (Linkedin): Ramesh
The most popular DevOps tools :
👉 Git : Version Control System tool
👉 Jenkins : Continuous Integration tool
👉 Selenium : Continuous Testing tool
👉 Puppet, Chef, Ansible : Configuration Management and Deployment tools
👉 Nagios : Continuous Monitoring tool
👉 Docker : Containerization tool
👉 Kubernetes : Container Custer Management tool
Tip-7 : Date: 22-Dec-20 Provided By (Linkedin): Bhagyasri
Source Code Management Tools :
👉 Team Foundation Server (TFS)
👉 Kallithea
👉 Helix Core Version Control
👉 GitLab:
👉 Bitbucket Server
👉 Subversion
👉 Mercurial
👉 GIT
👉 GitHub
👉 Gerrit
Tip-8 : Date: 25-Dec-20 Provided By (Linkedin): Bhagyasri
Source Code Management Tools :
👉 Team Foundation Server (TFS)
Tip-9 : Date: 27-Dec-20 Provided By (Linkedin): Bhagyasri
What is SCM :
👉 SCM stands for Source Code Management is an integral part of any development project in the current IT world.
Tip-10 : Date: 29-Dec-20 Provided By (Linkedin): Bhagyasri
What is Version Control System :
👉 version control system (VCS) allows you to track the history of a collection of files.
👉 It supports creating different versions of this collection.
👉 Each version captures a snapshot of the files at a certain point in time.
Tip-11 : Date: 30-Dec-20 Provided By (Linkedin): Bhagyasri
Types of Version Control System(VCS) :
👉 Centralized Version Control Systems (CVCSs)
👉 Distributed Version Control Systems (DVCSs)
Tip-12 : Date: 31-Dec-20 Provided By (Linkedin): Bhagyasri
Centralized Version Control Systems (CVCSs) Tools :
👉 SVN
👉 Perforce
👉 ClearCase
Tip-13 : Date: 01-Jan-21 Provided By (Linkedin): Bhagyasri
Distribution Version Control System Tools (DVCSs) :
👉 Git
Tip-14 : Date: 03-Jan-21 Provided By (Linkedin): Bhagyasri
Benefits of GIT :
👉 Git provides the best performance
👉 Git handles your security
👉 Git has a different branching
👉 Git has an intermediate stage
👉 Git is distributed in nature
👉 This is a very important feature of any software present today.
Tip-15 : Date: 05-Jan-21 Provided By (Linkedin): Bhagyasri
History of git
👉 Git was developed by Linus Torvalds, creator of Linux Operating System.
👉 Git was developed when the relationship between the existing Version Control System (BitKeeper) and Linux team broke.
Tip-16 : Date: 09-Jan-21 Provided By (Linkedin): Bhagyasri
Git Life Cycle
Here are the three Git states:
👉 Working directory
👉 Staging area
👉 Git directory
Tip-17 : Date: 10-Jan-21 Provided By (Linkedin): Bhagyasri
Advantages of Git
👉 Relatively easy to set up
👉 Provides transparency
👉 Enable admins control the workflow
Tip-18 : Date: 12-Jan-21 Provided By (Linkedin): Bhagyasri
Disadvantages of Git
👉 If the main server goes down, developers can’t save versioned changes
👉 Remote commits are slow
👉 Unsolicited changes might ruin development
👉 If the central database is corrupted, the entire history could be lost (security issues)
Tip-19 : Date: 13-Jan-21 Provided By (Linkedin): Bhagyasri
GIT repository
👉 GIT contain a collection of files of various different versions of a Project.
Tip-20 : Date: 14-Jan-21 Provided By (Linkedin): Bhagyasri
Types of Repositories
👉 Bare Repositories
👉 Non-bare Repositories
Tip-21 : Date: 18-Jan-21 Provided By (Linkedin): Bhagyasri
GIT Terminology
👉 Repository
👉 Work space
👉 Branch
👉 Indexing area
👉 work tree
👉 commit
👉 Version-id/commit id
👉 Tag
Tip-22 : Date: 21-Jan-21 Provided By (Linkedin): Bhagyasri
Git Life Cycle :
Local Working Directory:
👉 The first stage of a Git project life cycle is the local working directory where our project resides, which may or may not be tracked.
Tip-23 : Date: 22-Jan-21 Provided By (Linkedin): Bhagyasri
Initialization:
👉 Initialize a repository, we give the command git init. With this command, we will make Git aware of the project file in our repository.
Tip-24 : Date: 25-Jan-21 Provided By (Linkedin): Bhagyasri
Staging Area:
👉 Files are being tracked by Git, we will add the files that we want to commit to the staging area by the git add command.
👉 This process can also be called indexing. The index consists of files added to the staging area.
Tip-25 : Date: 25-Jan-21 Provided By (Linkedin): Bhagyasri
Commit:
👉 Now, we will commit our files using the git commit -m our message command.
👉 We have successfully committed our files to the local repository.
Tip-26 : Date: 25-Jan-21 Provided By (Linkedin): Bhagyasri
Common git commands:
👉 We will divide the common Git commands into two primary categories:
👉 Local
👉 Remote
Tip-27 : Date: 25-Jan-21 Provided By (Linkedin): Bhagyasri
Local:
👉 git init, git touch, git status, git add, git commit, and git rm.
Remote:
👉 git remote, git pull, and git push.
Tip-28 : Date: 01-Jan-21 Provided By (Linkedin): Bhagyasri
Branching in Git:
👉 In branching, we mainly make use of the git checkout and git branch commands.
Tip-29 : Date: 02-Jan-21 Provided By (Linkedin): Bhagyasri
Merging in Git:
👉 Git by merging the branch we created to the master branch.
Tip-30: Date: 03-Feb-21 Provided By (Linkedin): Bhagyasri
Advantages of Merging:
👉 Merging allows parallel working in collaborative projects.
👉 It saves the time that is consumed by manual merging.
Disadvantage of Merging:
👉 Merging conflicts may occur while merging branches.
Tip-31: Date: 04-Jan-21 Provided By (Linkedin): Bhagyasri
Why Git for Your Organization:
👉 Git for developers
👉 git for marketing
👉 git for product management
👉 git for designers
👉 git for customer support
👉 git for human resource
👉 git for anyone managing a budget.
Tip-32: Date: 05-Jan-21 Provided By (Linkedin): Bhagyasri
Reasons Why Git so popular:
👉 Save time
👉 work offline
👉 Immensely Powerful Community
👉 The Largest Shared Repository
👉 Easy Version Control
👉 Secure Cloud Storage
Tip-33: Date: 10-Jan-21 Provided By (Linkedin): Bhagyasri
Most Polular Lanugages used with Git :
💎 HTML
💎 CSS
💎 Javascript
💎 Python
💎 ASP
💎 Scala
💎 Shell scripts
💎 PHP
💎 Ruby
💎 Ruby on Rails
💎 C
💎 C++
💎 C#
💎 Perl”
Tip-34: Date: 12-Feb-21 Provided By (Linkedin): Bhagyasri
Git Ignore :
👉 A gitignore file specifies intentionally untracked files that Git should ignore.
Tip-35 : Date: 16-Feb-21 Provided By (Linkedin): Bhagyasri
Git Ignore :
👉 Files already tracked by Git are not affected.
Tip-36: Date: 18-Feb-21 Provided By (Linkedin): Bhagyasri
Git Ignore :
👉 Git can be configured to ignore certain files and directories for repository operations.
Tip-37 : Date: 19-Feb-21 Provided By (Linkedin): Bhagyasri
Git Ignore :
👉 The file system of Git is classified into three categories
💎 Tracked
💎 Untracked
💎 Ignored
Tip-38: Date: 23-Feb-21 Provided By (Linkedin): Bhagyasri
Git Ignore :
Tracked
👉 Tracked files are such files that are previously staged or committed.
Tip-39: Date: 24-Feb-21 Provided By (Linkedin): Bhagyasri
Git Ignore :
Untracked
👉 Untracked files are such files that are not previously staged or committed.
Tip-40: Date: 25-Feb-21 Provided By (Linkedin): Bhagyasri
Git Ignore :
Ignored
👉 Ignored files are such files that are explicitly ignored by git.
👉 We have to tell git to ignore such files.
Tip-41: Date: 01-Mar-21 Provided By (Linkedin): Bhagyasri
What is Docker ?
👉 Docker is a containerization engine.
👉 It helps in containerizing your applications, along with the environments.
Tip-42: Date: 03-Mar-21 Provided By (Linkedin): Bhagyasri
👉 Docker allows you to package an application with all of its dependencies into a standardized unit for software development.
Tip-43: Date: 04-Mar-21 Provided By (Linkedin): Bhagyasri
What are Containers?
👉 A way to package your application and environments.
👉 A way to ship your application with ease.
👉 A way to isolate resources in a shared system.
Tip-44: Date: 05-Mar-21 Provided By (Linkedin): Bhagyasri
Docker Tips :
👉 Containers have been around much before Docker.
Tip-45: Date: 06-Mar-21 Provided By (Linkedin): Bhagyasri
Docker Tips :
👉 Docker runs on host operating system.
Tip-46: Date: 08-Mar-21 Provided By (Linkedin): Bhagyasri
Docker Tips :
👉 The kernel is shared among all the containers but the resources are in appropriate namespaces and cgroups.
Tip-47: Date: 10-Mar-21 Provided By (Linkedin): Bhagyasri
Docker Tips :
👉 Typical container consists of operating system libraries and the application code, much of which is shared.
Tip-48: Date: 11-Mar-21 Provided By (Linkedin): Bhagyasri
Docker Tips :
👉 No emulation of hardware.
👉 Docker is an open source tool that uses containers to create, deploy, and manage distributed applications.
Thank you for giving your valuable time to read the above information.
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