Posted on 4/2/09 by Felix Geisendörfer
while playing with automated machine configuration in EC2 for a few minutes this morning, I stumbled across a little hurdle. One of the items in my init script was the cloning of a git repository from GitHub.
This normally isn't a very difficult task to automate. However, it can become so if you see the following message:
$ git clone firstname.lastname@example.org:debuggable/secret-project.debuggable.com.git Initialized empty Git repository in /var/git/secret-project.debuggable.com/.git/ The authenticity of host 'github.com (220.127.116.11)' can't be established. RSA key fingerprint is 16:27:ac:a5:76:28:2d:36:63:1b:56:4d:eb:df:a6:48. Are you sure you want to continue connecting (yes/no)?
Interactive questions like this can be really annoying when it comes to automation. Luckily there is an easy fix available.
$ echo -e "Host github.com\n\tStrictHostKeyChecking no\n" >> ~/.ssh/config
This will add a configuration line to your ~/.ssh/config script that will silently ignore the authenticity of github.com.
-- Felix Geisendörfer aka the_undefined
PS: If the topic of passing ssh options to your git commands is interesting to you, make sure to also check out this git wiki page.
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