devops-practical.md

+## DevOps Practical 
+
+### Introduction to DevOps
+
+DevOps is a set of practices that companies/startups follow for writing software.
+-   The practice is to build, test and deploy each change in the software as soon as the changes are submitted.
+-   It increases speed of software development and make sure that the software quality is high.
+
+### DevOps stages 
+
+Devops has these stages 
+
+1.  Plan 
+2.  Code
+3.  Build 
+4.  Test 
+5.  Release 
+6.  Deploy
+
+
+### Steps to run DevOps using gitlab
+
+Gitlab provides ready-to-use templates to run DevOps on sample programs.
+
+For Example: 
+
+We will use a simple CPP program which `adds` and `substracts` 2 numbers.
+
+1.  Fork the repository.
+    ![fork](upload/Selection_023.png)
+    -   Select your username in the next window.
+
+2.  Clone the repository.
+    -   Copy Repository URL from the 
+
+        ![clone](upload/Selection_024.png)    
+
+    -   Open VSCode, Go to File --> Open Folder (open any empty folder)
+    -   Press `Ctrl` + `J`
+    -   Type `git clone {your-repository URL here}` 
+
+        ![clone2](upload/Selection_025.png)
+
+3.  Make changes to the code.
+    -   Add another line printing addition of 100 + 80.
+    ![change-code](upload/Selection_026.png)
+    
+
+4.  Submit the changes.
+    -   Press `Ctrl` + `J`
+    -   Run commands
+        
+        ```sh
+        cd devops-trial
+        git config --global user.name "{Your-name}"
+        git config --global user.email "{your-email-id}"
+        git add .
+        git commit -m "Added add 10 + 80"
+        git push
+        ```
+        ![submit-cmd](upload/Selection_027.png)
+
+5.  See your code Build, Test and Deploy.
+    -   Go to your repository, CI/CD --> Pipelines.
+    ![pipleines](upload/Screenshot%20from%202020-11-03%2015-34-57.png)
+    -   You can see Build, Test and Deploy devOps stages passing.
+    ![stages](upload/Selection_028.png)
+    -   Click on the `passed` to see all the individual stage summary.
+    ![stages-1](upload/Selection_029.png)
+
+6.  Thats is it done, you have successfully seen your code Build, Test and Deployed.
+