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TASK_121_Git_setup_from_Scratch.md

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Start:         2023-05-17 21:42:48
Finished:   2023-05-17 21:58:24

TASK 121: Git Setup from Scratch

Requirements

Some new developers have joined xFusionCorp Industries and have been assigned Nautilus project. They are going to start development on a new application, and some pre-requisites have been shared with the DevOps team to proceed with. Please note that all tasks need to be performed on storage server in Stratos DC.

  • Install git, set up any values for user.email and user.name globally and create a bare repository /opt/news.git.

  • There is an update hook (to block direct pushes to master branch) under /tmp on storage server itself; use the same to block direct pushes to master branch in /opt/news.git repo.

  • Clone /opt/news.git repo in /usr/src/kodekloudrepos/news directory.

  • Create a new branch xfusioncorp_news in repo that you cloned in /usr/src/kodekloudrepos.

  • There is a readme.md file in /tmp on storage server itself; copy that to repo, add/commit in the new branch you created, and finally push your branch to origin.

  • Also create master branch from your branch and remember you should not be able to push to master as per hook you have set up.

Steps

Login to the storage server and switch to root. For the server credentials, check out the Project Nautilus documentation.

sshpass -p '**********' ssh -o StrictHostKeyChecking=no  [email protected]
sudo su -
**********

Install git and set the username and email.

yum install -y git  
git config --global --add user.name natasha
git config --global --add user.email [email protected]

Initialize the new git repository.

git init --bare /opt/news.git

Check the update hook in tmp and copy it to the hooks directory inside the new repository.

[root@ststor01 ~]# cat /tmp/update 
#!/bin/sh
if [ "$1" == refs/heads/master ];
then
  echo "Manual pushing to this repo's master branch is restricted"
  exit 1 
cp /tmp/update  /opt/news.git/hooks/

Proceed to the specified directory and clone the news repo.

cd /usr/src/kodekloudrepos/ 
git clone /opt/news.git
[root@ststor01 kodekloudrepos]# ls -la
total 12
drwxr-xr-x 3 root root 4096 May 17 13:50 .
drwxr-xr-x 1 root root 4096 May 17 13:44 ..
drwxr-xr-x 3 root root 4096 May 17 13:50 news

Go inside the news repo. Create a new branch and switch to the new branch.

cd news 
git checkout -b xfusioncorp_news
git branch

Copy the README file from /tmp. Add, commit, and push it to origin afterwards.

cp /tmp/readme.md . 
git add readme.md 
git commit -m "Readme file"
git push origin xfusioncorp_news

Lastly, create a new branch called master. Based on the update hook we copied onto this repository, we should not be able to push to the master branch.

git checkout -b master 
[root@ststor01 news]# git push origin master
Total 0 (delta 0), reused 0 (delta 0)
remote: Manual pushing to this repo's master branch is restricted
remote: error: hook declined to update refs/heads/master
To /opt/news.git
 ! [remote rejected] master -> master (hook declined)
error: failed to push some refs to '/opt/news.git'

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