System maintenance on Feb 4 2020

Resolved Posted by Jason Anderson on January 27, 2020
Outage start Tuesday, February 04, 2020 1 p.m.
Expected end Tuesday, February 04, 2020 2 p.m.

We will be performing system-wide maintenance on the CHI infrastructure on February 4, 2020. The maintenance is expected to take all day; while CHI@UC and CHI@TACC may be accessible for portions of the day, you should expect service interruptions as we apply upgrades to the various subsystems.

The Jupyter environment will continue to be operational, and connectivity to existing experiments should be possible throughout the outage.

Update: this maintenance completed successfully, though some of the upgrades introduced a regression that affected login performance, which caused the subsequent intermittent outage. We anticipate the total observed downtime for this rollout was 1 hour.