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Say I connect to Amazon's EC2 service for multiple clients, where each client has their own ssh settings and secret keys etc.
Is there a way I could swap the settings for each client?
I'm on OS X.
user1361315
Posted 2012-08-23T16:39:01.130
Reputation: 327
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Well, an easy way to do this, would be to put each key in ~/.ssh and then create a file in ~/.ssh called config
inside config you would then put lines like this for each host/key pair
Host host1.example1.com
IdentityFile ~/.ssh/key1
User username_on_host1
Host host2.example2.com
IdentityFile ~/.ssh/key2
User username_on_host2
...
then when connecting to each server it will use the proper usernames & keys
You could go further, by editing /etc/hosts and put shortened names for the IP addresses that your connecting to like such
11.22.33.44 host1
then in your config file you can just put host1 instead of host1.example.com
This way your clients get the added benefit of separate security instead of sharing the same key across all clients.
Edit: You should also
chmod 644 ~/.ssh/config
Kevin
Posted 2012-08-23T16:39:01.130
Reputation: 186
1Are you looking for a way to synchronize the ssh configurations for each client? I'm not sure what you mean from your question. – bobmagoo – 2012-08-23T16:42:44.307
Do you want to have the systems setup so the same key pair grants you ssh access to every system? – chuck – 2012-08-23T17:54:20.233
I want to connect to each one without having to manually change my environmental variables etc. since connecting to ec2 assumes an environtal variable during ssh connection. – user1361315 – 2012-08-23T18:10:21.827