Recently, after upgrading Ubuntu to version 24.10, some users have reported issues with using the Keychain manager to authenticate SSH keys when working with Git and the fish shell. In this article, we'll discuss the key concepts behind this issue and provide a fix to get your Git authentication working smoothly again.
Understanding the Problem
The Keychain manager is a utility in Ubuntu that securely stores passwords and passphrases for various applications, including Git and SSH. When you use the Keychain manager with the Bash shell, it automatically loads the stored keys when needed. However, with the fish shell, you may encounter authentication issues.
The fish Shell and Keychain Manager
The fish shell is a modern alternative to the Bash shell, offering several improvements in terms of productivity and ease of use. However, it doesn't natively support the Keychain manager. Instead, it uses its own keyring mechanism, which may not be compatible with the Keychain manager's stored keys.
The Solution: Using ssh-agent with fish Shell
To resolve the authentication issues with Git and fish shell, you can use the ssh-agent to manage your SSH keys. The ssh-agent is a background process that securely stores your SSH keys and forwards them to the applications that need them.
Setting up ssh-agent with fish Shell
To use ssh-agent with fish shell, follow these steps:
-
Start the ssh-agent in the background:
> fish_config --global init-script source <(curl -s https://raw.githubusercontent.com/fish-shell/fish-shell/master/contrib/completers/ssh-agent/init.fish) > eval $(ssh-agent -s) -
Add your SSH key to the ssh-agent:
> ssh-add ~/.ssh/id_rsa -
Update your Git configuration to use the ssh-agent:
> git config --global credential.helper "store --get-unsafe-file=~/.ssh/keychain.fish --keychain=~/.local/share/keyring/keyring.gpg" > git config --global user.name "Your Name" > git config --global user.email "[email protected]"
In this article, we discussed the issue of authentication with Git and fish shell on Ubuntu 24.10 and provided a fix using the ssh-agent. By following the steps outlined above, you should be able to authenticate your Git commands with fish shell without any issues.