AgentProxyException when referencing a git repo in deps.edn

[AlexAti]

I'm trying to deploy a project that references another gitlab repo as a dependency through clojure deps.

In order to have the required ssh keys, I use the following custom buildpack on top of the clojure one: https://github.com/simon0191/custom-ssh-key-buildpack

But when trying to pull this private gitlab repo through clojure deps, I get the following message:

       com.jcraft.jsch.agentproxy.AgentProxyException: connector is not available: 
        at com.jcraft.jsch.agentproxy.ConnectorFactory.createConnector (ConnectorFactory.java:120)
           clojure.tools.gitlibs.impl$fn__1007.invokeStatic (impl.clj:30)
           clojure.tools.gitlibs.impl/fn (impl.clj:28)
           (...)

There seems to be some configuration that needs to be amended, but I can't find where.

[jkutner]

Judging from the jsch-agent-proxy-connector-factory source code, it looks like it's trying to use ssh-agent to get the key. But I suspect that's not running. Is there a way to configure it to read the key created by the buildpack directly?

[AlexAti]

I don't see how I can configure jsch to do so, but I looked into the buildpack source and it is not registering the key in ssh-agent. I modified the buildpack to add the key to ssh-agent here, but when testing with this version, I still get the same error.

[AlexAti]

I had another stab at it. You were correct that the problem is that clojure cli tools expect the ssh-agent to be running, yet clojure's buildpack doesn't launch it. I think it should, so I've added its start in #66.

However I'm now getting a different error:

UnknownHostKey: gitlab.com. RSA key fingerprint is b6:03:0e:39:97:9e:d0:e7:24:ce:a3:77:3e:01:42:09
Although the custom-ssh-key-buildpack is turning host key verification off, it seems to be the culprit: https://stackoverflow.com/questions/13396534/unknownhostkey-exception-in-accessing-github-securely . The strange thing is that in my testing fork of that repo I am both deactivating Strict Host Checking AND adding gitlab's public key to ~/.ssh/known_hosts :

  IFS=',' ;for element in `cat $ENV_DIR/CUSTOM_SSH_KEY_HOSTS`;
  do
    echo -e "Host $element\n"\
            "  IdentityFile ~/.ssh/custom_key\n"\
            "  IdentitiesOnly yes\n"\
            "  UserKnownHostsFile=/dev/null\n"\
            "  StrictHostKeyChecking no"\
            >> ~/.ssh/config
ssh-keyscan -H -t rsa $element >> ~/.ssh/known_hosts

It seems as if clojure's buildpack doesn't see the changes done by the ssh buildpack in ~/.ssh/config ? I'll keep on investigating but I thought it could be useful to document all this here.

[jkutner]

do you know if jsch-agent-proxy honors .ssh config and .ssh/known_hosts? maybe you have to configure it directly.

[eelkevanfoeken]

Did you find a solution for this?