GIT - Working with Remote repository GITHUB

Setup SSH Authentication with GITHUB Repository

Generate ssh keys on your linux machine

[osboxes@master ansible-playbooks]$ ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/home/osboxes/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/osboxes/.ssh/id_rsa.
Your public key has been saved in /home/osboxes/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:iDSkhURVA9g/UILBIkV4mAdjdkr6QpF2iHFMhCPsrqk osboxes@linuxhost
The key's randomart image is:
+---[RSA 3072]----+
|*^%O*++          |
|/B%=o. .         |
|*Bo oo           |
|.o . oo.         |
|o . . ..S        |
| o               |
|..               |
|o                |
|E                |
+----[SHA256]-----+

[osboxes@master ansible-playbooks]$ cat ~/.ssh/id_rsa.pub

ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABgQDHsN99astKP+jnHdSu6EtiY072Rllo4ILiZ4wwU5KISwjKVnUy9XGjVmMbFdQAJOczBRtw7AVmuo1vh5ieKa+BRvdJe1Sa7fZQVyHWqKxk+wkA1Mt6sSIkz3zzdte8hE9Ojmuqrqw3evjcwBywzf2Tz03JqSN2hhaXeQl8eK/DbO4y+NQXM2nOhVAGhpj1JWSCwXS9a1hWBF2OSHpJsmvcqVyDDWZvpjDoAwvJjd+n2XuZqyns/PVTy1WPq7AfWBigiGI8OTi/K97MKtDrSv0JgjX/aTVz5sirWxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxqIzrPkq+MfpKDMtORfjjbzIdwuRgngZLUtPDI1EywCy2gNhaWwoeG3CTQ/aR1OsMDs/74u/S5ECcQTYW7Vpb/slQhm8I+yvyfqUky7M9zuLMaMZyfRwdawrMExtU= osboxes@master

Create a new github account if you don't have one 

https://github.com

Go to Settings -> SSH and GPG keys -> SSH keys -> Click on New SSH Key

Copy the id_rsa.pub key from linux machine and paste it here 

Enter the following command on your Linux Machine

[osboxes@master ansible-playbooks]$ ssh -T git@github.com

The authenticity of host 'github.com (140.82.114.4)' can't be established.
RSA key fingerprint is SHA256:nThbg6kXUpJWGl7E1IGOCspRomTxdCARLviKw6E5SY8.
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added 'github.com,140.82.114.4' (RSA) to the list of known hosts.
Hi pavanbandaru! You've successfully authenticated, but GitHub does not provide shell access.

Create a repository on your local system and commit the changes to local repository before pushing your code to GITHUB

[osboxes@master ansible-playbooks]$ git init

Initialized empty Git repository in /home/osboxes/ansible-playbooks/.git/

[osboxes@master ansible-playbooks]$ git add .

[osboxes@master ansible-playbooks]$ git commit -m "My First commit to ansible playbooks"

[master (root-commit) e8f579c] My First commit to ansible playbooks

 15 files changed, 236 insertions(+)

 create mode 100644 addusers.yml

 create mode 100644 apache-install.yml

 create mode 100644 create_dir.yml

 create mode 100644 dict.yml

 create mode 100644 install-packages.yml

 create mode 100644 install-packages_1.yml

 create mode 100644 inventory-loops.yml

 create mode 100644 inventory.txt

 create mode 100644 iterating-loops.yml

 create mode 100644 limit-output.yml

 create mode 100644 linux-user.yml

 create mode 100644 mynewplaybook

 create mode 100644 new_inventory.txt

 create mode 100644 password.txt

 create mode 100644 register.yml

[osboxes@master ansible-playbooks]$ git status

On branch master

nothing to commit, working tree clean

Create a new repository on GITHUB and click on Code -> SSH and copy the URL link.

Go to your Linux machine and execute the following commands

[osboxes@master ansible-playbooks]$ git remote add origin git@github.com:pavanbandaru/ansible-playbooks.git

[osboxes@master ansible-playbooks]$ git remote -v

origin  git@github.com:pavanbandaru/ansible-playbooks.git (fetch)

origin  git@github.com:pavanbandaru/ansible-playbooks.git (push)

[osboxes@master ansible-playbooks]$ git push -u origin master

Warning: Permanently added the RSA host key for IP address '140.82.112.4' to the list of known hosts.

Enumerating objects: 17, done.

Counting objects: 100% (17/17), done.

Compressing objects: 100% (15/15), done.

Writing objects: 100% (17/17), 3.34 KiB | 285.00 KiB/s, done.

Total 17 (delta 2), reused 0 (delta 0), pack-reused 0

remote: Resolving deltas: 100% (2/2), done.

remote:

remote: Create a pull request for 'master' on GitHub by visiting:

remote:      https://github.com/pavanbandaru/ansible-playbooks/pull/new/master

remote:

To github.com:pavanbandaru/ansible-playbooks.git

 * [new branch]      master -> master

Branch 'master' set up to track remote branch 'master' from 'origin'.

Go to GITHUB and verify the changes

Make some changes to our local repository and push the changes to remote repository

( I have made changes to inventory-loops.yml file and I am going to push these changes to remote repository)

Check the status

[osboxes@master ansible-playbooks]$ git status

On branch master

Your branch is up to date with 'origin/master'.

Changes not staged for commit:

  (use "git add <file>..." to update what will be committed)

  (use "git restore <file>..." to discard changes in working directory)

        modified:   inventory-loops.yml

no changes added to commit (use "git add" and/or "git commit -a")

Check the difference

[osboxes@master ansible-playbooks]$ git diff

diff --git a/inventory-loops.yml b/inventory-loops.yml

index dba93c1..d50904f 100644

--- a/inventory-loops.yml

+++ b/inventory-loops.yml

@@ -1,5 +1,5 @@

 ---

-- name:  looping over inventory

+- name:  looping over inventory example

   hosts: all

   become: true

   become_user: root

Add file and commit the changes

[osboxes@master ansible-playbooks]$ git commit -am "updated inventory-loops.yml"

[master 10207db] updated inventory-loops.yml

 1 file changed, 1 insertion(+), 1 deletion(-)

Pull the remote repository to local before pushing into remote as a best practice. Changes would have been made to the remote repository by others. So to avoid conflicts, pull the repository before pushing it to remote. 

[osboxes@master ansible-playbooks]$ git pull origin master

warning: Pulling without specifying how to reconcile divergent branches is

discouraged. You can squelch this message by running one of the following

commands sometime before your next pull:

  git config pull.rebase false  # merge (the default strategy)

  git config pull.rebase true   # rebase

  git config pull.ff only       # fast-forward only

You can replace "git config" with "git config --global" to set a default

preference for all repositories. You can also pass --rebase, --no-rebase,

or --ff-only on the command line to override the configured default per

invocation.

Warning: Permanently added the RSA host key for IP address '140.82.114.3' to the list of known hosts.

From github.com:pavanbandaru/ansible-playbooks

 * branch            master     -> FETCH_HEAD

Already up to date.

Now push the changes to remote repository

[osboxes@master ansible-playbooks]$ git push origin master

Enumerating objects: 5, done.

Counting objects: 100% (5/5), done.

Compressing objects: 100% (3/3), done.

Writing objects: 100% (3/3), 314 bytes | 314.00 KiB/s, done.

Total 3 (delta 2), reused 0 (delta 0), pack-reused 0

remote: Resolving deltas: 100% (2/2), completed with 2 local objects.

To github.com:pavanbandaru/ansible-playbooks.git

   e8f579c..10207db  master -> master

We can see the changes on the remote repository