Not able to connect to a running SSH Agent-CodePudding

I'm trying to use SSH Agent for a git authentication. My environment is Ubuntu Linux in Docker on ECS. I'm starting the SSH Agent when the container starts with a command:

runuser -l user -c 'ssh-agent -d'

That starts agent using user user with debug. Right after that, I wrote SSH_AUTH_SOCK and SSH_AGENT_PID into /home/user/.profile to make possible to connect to agent for the user.

When I log in as a user, I can see that my env variables are ok:

[user]$ echo $SSH_AUTH_SOCK && echo $SSH_AGENT_PID
/tmp/ssh-z5omIr4XkN49/agent.65
65

And the agent is running:

[user]$ ps -efal | grep ssh-agent
4 S root        62    59  0  80   0 - 37521 -      14:32 ?        00:00:00 /usr/bin/qemu-x86_64 /usr/sbin/runuser -l user -c ssh-agent -d
4 S user        65    62  0  80   0 - 37672 -      14:32 ?        00:00:00 /usr/bin/qemu-x86_64 /usr/bin/ssh-agent -d

And socket permissions are fine:

[user]$ ls -lh /tmp/ssh-FMgHCgorQ36E/agent.65
srw------- 1 user root 0 Mar 12 14:32 /tmp/ssh-FMgHCgorQ36E/agent.65

But when I'm trying to use the ssd-add command, I'm getting a connection error:

[user]$ ssh-add -l
Could not open a connection to your authentication agent.

What am I doing wrong?

I checked out this answer (Could not open a connection to your authentication agent) but it does not work for me because I have to start SSH Agent in my script, without forcing the user to do that.

UPDATE

I guess that ssh-add does not read env variables for some reason.

The SSH_AUTH_SOCK is set:

[user]$ echo $SSH_AUTH_SOCK
/tmp/ssh-FN4YayNM6fJ1/agent.65

But:

[user]$ ssh-add -l
Could not open a connection to your authentication agent.

But this works:

[user]$ SSH_AUTH_SOCK=/tmp/ssh-FN4YayNM6fJ1/agent.65 ssh-add -l
4096 SHA256:xvtWid6fm7C9LgyhosVOULo9HZQchve4rUVUgUO2zqE (stdin) (RSA)

CodePudding user response：

Your SSH_AGENT_PID (59) is not right, you should use 65.

CodePudding user response：

My bad. I was confused about the echo $SSH_AUTH_SOCK result.

I missed the export keyword when updating the .profile file by my script.

SSH_AUTH_SOCK=/tmp/ssh-Y3YbbJ4ZTGyp/agent.59
SSH_AGENT_PID=59

should be:

export SSH_AUTH_SOCK=/tmp/ssh-Y3YbbJ4ZTGyp/agent.59
export SSH_AGENT_PID=59