python_tutorials/g00_git_ssh-keygen.txt at master · lselector/python_tutorials · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
How to Set up SSH to work with GitHub
# --------------------------------------------------------------
Note - in 2021 GitHub switched their authentication rules.

Now you should use SSH.

You can add SSH key to your account or to a specific repository
(may be to a repo which is not yours, but you have access).

# --------------------------------------------------------------
Here how to add to your account

https://docs.github.com/en/authentication/connecting-to-github-with-ssh/generating-a-new-ssh-key-and-adding-it-to-the-ssh-agent

The link above provide instructions for Mac, Windows, and Linux.
They have some minor differences.
On Mac and Linux you use terminal.
On Windows you use Git Bash terminal.

Below is how to do it on a Mac:

ssh-keygen -t ed25519 -C "your_email@example.com"

/Users/you/.ssh/github_myname/id_ed25519_github

# Start the ssh-agent in the background
# and set env vars SSH_AUTH_SOCK, SSH_AGENT_PID to point to it
eval "$(ssh-agent -s)"

# add your key to the agent
ssh-add  ~/.ssh/github_myname/id_ed25519_github

create/edit file     ~/.ssh/config

Host *
  AddKeysToAgent yes

Host github.com
  User myuser
  HostName github.com
  IdentityFile ~/.ssh/github_myname/id_ed25519_github
  UseKeychain yes
  IdentityFile ~/.ssh/id_ed25519_github

# -------------------------------------
# Then copy/paste public key into Github website:

https://docs.github.com/en/authentication/connecting-to-github-with-ssh/adding-a-new-ssh-key-to-your-github-account

# -------------------------------------
# Then switch the remote locally:

cd your_local_repo_dir
git remote set-url origin git@github.com:YouUser/YouRepo.git

git remote -v
origin  git@github.com:YouUser/YouRepo.git (fetch)
origin  git@github.com:YouUser/YouRepo.git (push)

# -------------------------------------
Note: to add a new key to a company's private repo,
follow instructions here:
  https://cloud.redhat.com/blog/private-git-repositories-part-2a-repository-ssh-keys

Basically you need to generate the key pair

   ssh-keygen -t ed25519 -C "first.last@gmail.com"

For example, you created these two keys:

    $HOME/.ssh/github_myproject/github_id_ed25519
    $HOME/.ssh/github_myproject/github_id_ed25519.pub

Then you update the .ssh/config file:

Host github.com
  User githubuser
  HostName github.com
  IdentityFile /home/azureuser/.ssh/github_myproject/github_id_ed25519
  IdentitiesOnly yes

Host *
  AddKeysToAgent yes

Then login in github, go to the repo, click on settings (gear),
then on the left click on "Deploy keys",
and the on right-top click on "Add deploy key"
then follow instructions to paste the public key.
# -------------------------------------