Rolling Reboot of all three HPC clusters beginning July 7

Resolution: 
Resolved

A rolling reboot is scheduled to remediate a ptrace vulnerability and safely restore debugger functionality for all clusters, including Ascend, Cardinal, and Pitzer. Login nodes will be rebooted first and access will be temporarily disrupted. Compute nodes will reboot in a rolling fashion; running jobs will not be impacted.

Status: Scheduled Maintenance

Start Time: July 7

Scope: All clusters

Impact: Temporary login node disruption; no job impact on compute nodes. 

Updates on July 9:  Remaining nodes to reboot:

* Pitzer - 11 nodes
* Ascend - 76 nodes
* Cardinal - 84 nodes