Is this possible with assh?

[ashmatadeen]

I would like to set up my ssh config to connect to a number of servers:

• server1.domain.com
• server2.domain.com
• server3.domain.com
• server4.domain.com
  etc

by simply doing
ssh server[X]

Connection to all servers are with the same ssh key and same user.
Is this possible with assh?

I have tried this:

  hosts: 
    "server*":
      Hostname: "%h.domain.com"
      User: ash
      IdentityFile: ~/.ssh/id_ecdsa

which errors with:
FATA[0000] Proxy error: dial tcp [::1]:22: getsockopt: connection refused

Thanks,
Ash

[moul]

Hi @ashmatadeen,

Your configuration should works, however, there is a bug, I'm resolving twice the %h format string

---

example:

Using your configuration file:

$ ssh -v server1
[...]
debug1: Executing proxy command: exec assh proxy --port=22 server1.domain.com
[...]
time="2016-02-02T00:09:47+01:00" level=info msg="Host server1.domain.com"
time="2016-02-02T00:09:47+01:00" level=info msg="  HostName server1.domain.com.domain.com"
time="2016-02-02T00:09:47+01:00" level=info msg="  IdentityFile ~/.ssh/id_ecdsa"
time="2016-02-02T00:09:47+01:00" level=info msg="  User ash"

[moul]

As a temporary fix, you can use this:

  "server*":
    #Hostname: "%h.domain.com"
    ResolveCommand: "echo %h.domain.com"
    User: ash
    IdentityFile: ~/.ssh/id_ecdsa

[ashmatadeen]

Thanks @moul

[moul]

I just pushed a fix (see #103, c403cf4)

Can you rebuild assh and give a new try ?

[moul]

I also made a new release: https://github.com/moul/advanced-ssh-config/releases/tag/v2.2.0 so you can fetch the artifacts as you did the first time

[ashmatadeen]

That worked @moul Thanks for the fix.

One more thing though, is this expected output when running assh proxy localhost
~/.ssh > assh proxy localhost FATA[0000] Proxy error: dial tcp [::1]:22: getsockopt: connection refused

[moul]

Cool !

---

Is the output like this:

~/.ssh > assh proxy localhost FATA[0000] Proxy error: dial tcp [::1]:22: getsockopt: connection refused

Or like this:

~/.ssh > assh proxy localhost
FATA[0000] Proxy error: dial tcp [::1]:22: getsockopt: connection refused

?

---

In the first case, I think this is an old message, probably an old SSH connection that stayed open thanks to ControlMaster SSH support

In the second case, it looks normal ! However, the error messages can be improved to be more human-readable :) any advices ?

[ashmatadeen]

It's the second one. The config file gets generated successfully and works as expected despite the error. I'm not clear on what the proxy error means though.

[moul]

The assh proxy command will:

1. parse ~/.ssh/assh.yml file
2. write ~/.ssh/config file
3. open a network connection unless you use the --dry-run option

I didn't split 1. and 2. into two actions, so in the ~/.ssh/config file you can find an entry ProxyCommand assh proxy ..., which will do all the stuff at once

This error is not related with 1. and 2. but with 3., which here indicates that 127.0.0.1:22 is closed

---

Give a try to these commands:

• assh proxy --dry-run localhost
• assh -D proxy localhost

[ashmatadeen]

That makes more sense now.

If the use case is to only generate the config file, maybe the command in step 3 under Getting started could be assh build > ~/.ssh/config instead?

[moul]

Yep, definitely ! Do you want to make the change ? :)

[moul]

Closing this issue as it was already addressed, do not hesitate to reopen it or open a new one if necessary

Thanks again for your help