[CI] Jenkins is down

[hcho3]

The Jenkins master node (xgboost-ci.net) has been down (*) for a few days, according to @trivialfis. Impact: Substantial amount of test suite is rendered unavailable. I'm re-building the master from scratch. Sorry for inconvenience caused. @dmlc/xgboost-committer

PS. This seems to be a good opportunity to document all steps it takes to set up the Jenkins master node from scratch. See hcho3/xgboost-devops#6. Also #4958

(*) I cannot either ping or SSH into the master instance.

[trivialfis]

Travis seems also down as there is a permission error. Will try to resolve it later.

[trivialfis]

Travis is fixed in #5062 . The disabled test should be related to #5063 . As our previous discussion on the threaded iterator, I will make the fix as a future plan.

[hcho3]

@trivialfis Thanks for fixing Travis! I'll get Jenkins back up very soon.

[hcho3]

Update: Linux pipeline is now back up. I still need to work on the Windows pipeline.

[trivialfis]

Okay. I messed up a little. Out of curious I created a different pipeline with Script Path pointing to Jenkinsfile-win64, but somehow it's still running the pipeline defined in Jenkinsfile. I deleted the new pipeline as I failed to find a solution for getting it work. Also I added a worker from Windows CPU AMI which is later deleted.

[hcho3]

@trivialfis I updated hcho3/xgboost-devops#6 to include some details about the Windows pipeline. I'm also closing this issue, as Jenkins is now fully back up.

[hcho3]

Sorry, looks like I called it too early. Windows pipeline is still broken. It looks like I have to re-build AMIs for all Windows workers. (There are 5 AMIs)

[hcho3]

Fixed in #5078 and hcho3/xgboost-devops#8