SSH Connection to Slave Error about dockerjenkins_tutorial

[AdnaneKhan]

I was able to work around this issue by adding

RUN rm -f /run/nologin

at the end of the Dockerfile for the jenkins slave.

[maxfields2000]

Working on a new tutorial but yes, it's all fixed in the Jenkins2 folder (I'm moving on from Jenkins 1 finally!)

[cirocosta]

Hey @AdnaneKhan , thanks for the suggestion. Had the same error here and adding the removal of /run/nologin did the job 👍
Also, on the slave's sshd side, after running rsyslogd inside the slave you can check that (before removing the nologin) we get:

Jul  7 19:49:19 aba7116ed670 sshd[20]: fatal: Access denied for user jenkins by PAM account configuration [preauth]

[maxfields2000]

Neat find. Is this happening for you right out of the box with what I have or by any chance are you changing versions on anything?

Last time I tested things seemed to work so I'll go figure out what's changed. This looks like a good update so worst case I'll apply this to the build slave image permanently. Going to leave this issue open until I'm confident things just work out of the box one way or another. Thanks for coming back with what you found fixed it!

[AdnaneKhan]

Pretty much out of the box. I had updated the Jenkins version however this issue still manifested itself with the following set of steps to take Jenkins out of the mix.

While in jenkins-slave directory:

docker build .

docker run {IMAGE_ID}

ssh -i files/dummy_private_rsa_key [email protected]

The result is then:

The authenticity of host '172.17.0.3 (172.17.0.3)' can't be established.
ECDSA key fingerprint is 6b:c0:6e:c6:e8:0e:75:68:3c:05:32:0e:ba:df:40:de.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '172.17.0.3' (ECDSA) to the list of known hosts.
System is booting up. See pam_nologin(8)
Connection closed by 172.17.0.3

I tried this using both Docker installed directly on my CentOS 7 host, as well in the docker machine running Boot2Docker.

The Docker version I am using is 1.11.1

[CosetteN]

I'm having the same issue, but adding @AdnaneKhan's fix to the end of the slave file didn't alter anything. Could it be linked to using Docker version 1.12.2?

[De1taE1even]

This solution worked for me as well, thanks so much! For reference, I'm running docker version 1.13.1.

[maxfields2000]

Still plan on including this in my update, though On Jenkins2 I've switched to the JNLP launcher (from Yet another docker plugin) and SSH is no longer needed but I'll get the Jenkins 1.6'ish version fixed.

[SalahAdDin]

Will you make a new tutorial for it? You are speaking about this, right?