Setup Git Server in CentOS 6.3

0. Environment:

Server machine: CentOS 6.3 x86

Client machine: Windows 10 Pro x86_64

1. Install ssh server

[server machine shell]
#yum install openssh openssh-server
#chkconfig sshd on
#/etc/init.d/sshd start

2. Create user git

[server machine shell]
#useradd git
#passwd git

3. Create an empty repository

[server machine shell]
#cd /home/git
#git init --bare sample.git
#chown -R git:git sample.git

4. Conifigure ssh client in client machine

Download Git for Windows from https://git-for-windows.github.io/

Direct link(for 64bit system): https://github.com/git-for-windows/git/releases/download/v2.6.1.windows.1/Git-2.6.1-64-bit.exe

Install it to default location(C:\Program Files\Git), add C:\Program Files\Git\usr\bin to system environment PATH

Adding C:\Program Files\Git\usr\bin to PATH to enable command ssh and ssh-keygen in cmd.exe

Replace the  email address with yours to generate public & private ssh keys

[client machine cmd]
>ssh-keygen -t rsa -C "my_email@hotmail.com"

Press Enter three times to accept default setting, sample output

Generating public/private rsa key pair.
Enter file in which to save the key (/c/Users/<your account name>/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /c/Users/<your account name>/.ssh/id_rsa.
Your public key has been saved in /c/Users/<your account name>/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:+GR+6jWy7FtN3hFBszUCq08nk3fzlIBPzI0AbTkwOo4 my_email@hotmail.com
The key's randomart image is:
+---[RSA 2048]----+
|         ++ooo+..|
|        . .=* +=.|
|       o  .o.*o. |
|      o.. . + ...|
|     E..S. =.+.+.|
|       =  o+=..oo|
|        + =.o . .|
|       . B .     |
|       oB.       |
+----[SHA256]-----+

5. Transfer client machine's public key to server machine to enable login without password

[client machine cmd]
>ssh git@<server address>

$midkr .ssh
$chmod  .ssh
$cd .ssh
$touch authorized_keys
$chmod 600 authorized_keys

Sample output

The authenticity of host '<server address> (<server address>)' can't be established.
RSA key fingerprint is SHA256:hsFlk18MlWP3wtNVGKcBrZijZMvCjsdlhJg/SPAn9Z0.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '<server address>' (RSA) to the list of known hosts.
git@<server address>'s password:
Last login: Sun Oct 18 07:58:35 2015 from <client ip>
[git@localhost ~]$ mkdir .ssh
[git@localhost ~]$ chmod 700 .ssh
[git@localhost ~]$ cd .ssh
[git@localhost .ssh]$ touch authorized_keys
[git@localhost .ssh]$ chmod 600 authorized_keys

Append client's public key to server's authorized_keys file by copy-and-paste

[client machine cmd -> connected to server via ssh]
$vi ~/.ssh/authorized_keys

client machine public key location: %USERPROFILE%\.ssh\id_rsa.pub

server machine authorized_keys file location: /home/git/.ssh/authorized_keys

Sample authorized_keys file

[git@localhost ~]$ vi .ssh/authorized_keys

aaarticlea/png;base64,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" 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Logout from server and connect again to test, if ssh doesn't prompt for password, your configuration for ssh is correct.

6. Clone remote repository

[client machine cmd]
>git clone git@<server address>:sample.git

7. Test

Create a README.md file and push to server repository

[client machine cmd]
>touch README.md
>notepad README.md       #input some content into README.md, then save
>git add README.md
>git commit -m "Intial commit for sample project"
>git push origin master

8 Done. if you want to submit code in another machine, you need to:

　　a. Append the public key of the new machine to server's authorized_keys file

　　b. Clone repository to new machine

　　c. Modify the files in new machine local repository, and push to server(remote repository)

---

If you don't want the user git login into server via shell, you can modify the type of shell for this user

[server machine shell]
#vi /etc/passwd

Locate to the end of file, change  git:**********/bin/bash to git:**********/usr/bin/git-shell

After that, user still can use name git to push their code to server, but login via ssh is denied

C:\Users\<account name>>ssh git@<server address>
Last login: Sun Oct 18 10:42:30 2015 from <client ip>
fatal: What do you think I am? A shell?
Connection to 192.168.1.109 closed.

C:\Users\<account name>>