DevOps Classroomnotes 15/Jul/2023

Fourth area of Git – Remote Repo

• Remote-Repo: This represents git repository some where else
  
• Any software which hosts git-repo is called as git servers or git hosted repositories
• Git Remote Repositories can be hosted by many platforms/servers
  • Self-Hosted:
    • Gitolite
    • Git-lab
  • Cloud-Hosted or Git as Service
    • GitHub
    • BitBucket
    • Azure Source Repos
    • AWS Code Commit
• Git repository will have connection to remote-repo and a name to it. Default remote conections name is origin
• Cases
  • if you have local repo and then if you have created remote repo
    • remote add to add connection
    • push to send your git objects
    • pull to get git objects
  • you have remote repo already and you need local repo in your system.
    • clone
• When a remote repo is connected git branch -r will show remote branches
• Git pull has two variants
  • pull: this might lead to extra merge commits
  • pull with rebase: this will not lead to extra merge commits
• Pull operation is fetch + merge
• pull or push command require name of remote and branch names

git pull origin main
git push origin main

• if you want to set default remote and branch then we can set upstream branch

# while first creation of branch and pushing

git push  -u origin main

Activity

• Create a new repository in
  • Github: Refer Here
  • Azure Source Repos
  • AWS Code Commit

Tags

• Git reference objects refspec
  • Branches
  • Tags
• Tag points to specific commit and it doesn’t move like branch
• We have two types of tags
  • lightweight tags
  • annonated tags

Exercise

• Create a new repo
• make 3 commits
• delete 2nd commit
• now recover the deleted commit

Install – Jenkins

• Refer Here for installing jenkins on linux
• Ubuntu steps: Refer Here

sudo apt update 
sudo apt install openjdk-17-jdk -y
curl -fsSL https://pkg.jenkins.io/debian-stable/jenkins.io-2023.key | sudo tee \
  /usr/share/keyrings/jenkins-keyring.asc > /dev/null
echo deb [signed-by=/usr/share/keyrings/jenkins-keyring.asc] \
  https://pkg.jenkins.io/debian-stable binary/ | sudo tee \
  /etc/apt/sources.list.d/jenkins.list > /dev/null
sudo apt update
sudo apt install jenkins -y

• Navigate to http://<public-ip>:8080
  
• findout the initial Admin password

sudo cat /var/lib/jenkins/secrets/initialAdminPassword

* Now install suggested plugins


* Create a new admin user




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