Git and SSH, which key is used?

Question

Say your .ssh directory contains 30 keys (15 private and 15 public).

Where in Git can one check which one is used to connect to a given remote repository?

Answer 1

The following entry in .ssh/config file solves the problem

  host git.assembla.com
  user git
  identityfile ~/.ssh/whatever

Where ~/.ssh/whatever is a path to your private key

Additionally, user and host can be picked up from

git push git@git.assembla.com:repo_name.git
         ^__ ^_______________
         user host