markdown multiple_ssh_setting.md

Posted 2021-05-05

Multiple SSH Keys settings for different github account
=================================================================


create different public key
---------------------------------

create different ssh key according the article [Mac Set-Up Git](http://help.github.com/mac-set-up-git/)

	$ ssh-keygen -t rsa -C "[e-mail]"

Please refer to [github ssh issues](http://help.github.com/ssh-issues/) for common problems.

for example, 2 keys created at:

	~/.ssh/id_rsa_activehacker
	~/.ssh/id_rsa_jexchan

then, add these two keys as following

	$ ssh-add ~/.ssh/id_rsa_activehacker
	$ ssh-add ~/.ssh/id_rsa_jexchan

you can delete all cached keys before

	$ ssh-add -D

finally, you can check your saved keys

	$ ssh-add -l


Modify the ssh config
---------------------------------

	$ cd ~/.ssh/
	$ touch config
	$ subl -a config

Then added

	```
	#ntamvl-tam-dev account on tam-dev
	Host github.com-ntamvl
	    HostName github.com
	    User ntamvl
	    PreferredAuthentications publickey
	    IdentityFile ~/.ssh/id_rsa_ntamvl
	
	#nguyentamvinhlong account on tam-dev
	Host github.com-nguyentamvinhlong
	    HostName github.com
	    User nguyentamvinhlong
	    PreferredAuthentications publickey
	    IdentityFile ~/.ssh/id_rsa


	#ntamvl account
	Host github.com
	    HostName github.com
	    PreferredAuthentications publickey
	    IdentityFile ~/.ssh/id_rsa_ntamvl
        
        
	#activehacker account
	Host github.com-activehacker
		HostName github.com
		User git
		IdentityFile ~/.ssh/id_rsa_activehacker

	#jexchan account
	Host github.com-jexchan
		HostName github.com
		User git
		IdentityFile ~/.ssh/id_rsa_jexchan


Clone you repo and modify your Git config
---------------------------------------------

clone your repo
	git clone [e-mail]:activehacker/gfs.git gfs_jexchan

cd gfs_jexchan and modify git config

	$ git config user.name "jexchan"
	$ git config user.email "[e-mail]" 
 
	$ git config user.name "activehacker"
	$ git config user.email "[e-mail]" 

or you can have global git config
	$ git config --global user.name "jexchan"
	$ git config --global user.email "[e-mail]"


then use normal flow to push your code

	$ git add .
	$ git commit -m "your comments"
	$ git push


Another related article in Chinese

1. http://4simple.github.com/docs/multipleSSHkeys/