3.5 KiB
ssh-agent plugin
This plugin starts automatically ssh-agent to set up and load whichever
credentials you want for ssh connections.
To enable it, add ssh-agent to your plugins:
plugins=(... ssh-agent)
Settings
IMPORTANT: put these settings before the line that sources oh-my-zsh
agent-forwarding
To enable agent forwarding support add the following to your zshrc file:
zstyle :omz:plugins:ssh-agent agent-forwarding yes
helper
To set an external helper to ask for the passwords and possibly store
them in the system keychain use the helper style. For example:
zstyle :omz:plugins:ssh-agent helper ksshaskpass
identities
To load multiple identities use the identities style (this has no effect
if the lazy setting is enabled). For example:
zstyle :omz:plugins:ssh-agent identities id_rsa id_rsa2 id_github
NOTE: the identities may be an absolute path if they are somewhere other than
~/.ssh. For example:
zstyle :omz:plugins:ssh-agent identities ~/.config/ssh/id_rsa ~/.config/ssh/id_rsa2 ~/.config/ssh/id_github
# which can be simplified to
zstyle :omz:plugins:ssh-agent identities ~/.config/ssh/{id_rsa,id_rsa2,id_github}
lazy
To NOT load any identities on start use the lazy setting. This is particularly
useful when combined with the AddKeysToAgent setting (available since OpenSSH 7.2),
since it allows to enter the password only on first use. NOTE: you can know your
OpenSSH version with ssh -V.
zstyle :omz:plugins:ssh-agent lazy yes
You can enable AddKeysToAgent by passing -o AddKeysToAgent=yes to the ssh command,
or by adding AddKeysToAgent yes to your ~/.ssh/config file [1].
See the OpenSSH 7.2 Release Notes.
lifetime
To set the maximum lifetime of the identities, use the lifetime style.
The lifetime may be specified in seconds or as described in sshd_config(5)
(see TIME FORMATS). If left unspecified, the default lifetime is forever.
zstyle :omz:plugins:ssh-agent lifetime 4h
quiet
To silence the plugin, use the following setting:
zstyle :omz:plugins:ssh-agent quiet yes
ssh-add-args
To pass arguments to the ssh-add command that adds the identities on startup,
use the ssh-add-args setting. You can pass multiple arguments separated by spaces:
zstyle :omz:plugins:ssh-agent ssh-add-args -K -c -a /run/user/1000/ssh-auth
These will then be passed the ssh-add call as if written directly. The example
above will turn into:
ssh-add -K -c -a /run/user/1000/ssh-auth <identities>
For valid ssh-add arguments run ssh-add --help or man ssh-add.
Powerline 10k specific settings
Powerline10k has an instant prompt setting that doesn't like when this plugin writes to the console. Consider using the following settings if you're using p10k (documented above):
zstyle :omz:plugins:ssh-agent quiet yes
zstyle :omz:plugins:ssh-agent lazy yes
macOS specific settings
macOS supports using passphrases stored in the keychain when adding identities to the ssh-agent.
ssh-add --apple-use-keychain ~/.ssh/id_rsa ...
This plugin can be configured to use the keychain when loading using the following:
zstyle :omz:plugins:ssh-agent ssh-add-args --apple-load-keychain
Credits
Based on code from Joseph M. Reagle: https://www.cygwin.com/ml/cygwin/2001-06/msg00537.html
Agent-forwarding support based on ideas from Florent Thoumie and Jonas Pfenniger