How to manage multiple ssh-keys & automatically load them

Issues you might experience with SSH:

• Conflicting SSH keys
• Committing with the wrong credentials
• Set your personal SSH key from GitHub -> unset your work SSH. Having to login manually in SSH every single time...
• Hairloss and broken keyboard due to stress of not getting it to work 👨🏻‍🦲

Solution in a nutshell:

1. Remove your current remote (now it's porbably http instead of ssh or tied to the wrong ssh key).
2. Add your git remote again, but via a special way. It will be linked to the ssh-key that you wish to use for you repo. Below I'll try to explain it to you step-by-step. Feel free to ask questions if you can't get it to work.

Assumptions

1. Your terminal is running in the ~/.ssh/ folder.
2. You generated the ssh files using ssh-keygen -t rsa -C "example@youremailprovider.com"
3. You type in a filename for your ssh keys. I'd recommend to put your username in it so you can easily link it in the next step. (PS: You're already in ~/.ssh so no need to enter path if asked in prev step)
4. You had ssh-agent running so it did go without errors.
5. You pasted your beautifullfilename.pub contents to Github via GitHub (add SSH key link)

TLDR;

1. Create host file, probably you want to create it in ~/.ssh/ folder
2. Name this host file "config" (without any file-extensions)
3. Use template below to add hosts, use a nice [subdomain].domain-name in Host (not mistaken with Hostname!)
4. Point to your ssh key in the field IdentityFile
5. See below for example on what your file can look like

# Example host file (named config, probably you want to put it in .ssh folder)
Host mebusiness.github.com     
  Hostname github.com
  IdentityFile ~/.ssh/githubpersonal   
  IdentitiesOnly yes
Host mepersonal.github.com     
  Hostname bitbucket.com
  IdentityFile ~/.ssh/githubpersonal   
  IdentitiesOnly yes

5. Add our new remote to Git! (And replace the emoji to the value you've used in the config file).

`git remote add origin git@:username/repository.git `

1. git remote remove origin
2. git remote add origin git@<<<subdomain.domain.com>>:<<<UserNameInGitHub>>>/existing-repo.git
3. Example: git remote add origin git@me.github.com:Yaromey/existing-repo-url.git
4. Don't forget the .git extension

Bonus!! --> Start your ssh agent automatically and add your keys to the agent everytime you open a Bash terminal:

1. Go to your .bashrc file (user root directory) or just create one.
2. Put this code in it -- V

if [ -z "$SSH_AUTH_SOCK" ] ; then
 eval `ssh-agent -s`
 ssh-add ~/.ssh/MY_PERSONAL_SSH_FILE
 ssh-add ~/.ssh/MY_WORK_SSH_FILE
 ssh-add ~/.ssh/MY_OTHER_SECONDARY_ACCOUNT_SSH_FILE
fi