annis's blog

Wed, June 21, 2017: Linux machine security issue and reboots

To address an extremely dangerous and widespread vulnerability, we will be patching all the linux machines in the next few days.

This patch requires a reboot.

Condor users will see a slightly higher rate of job restarts as we patch and reboot the condor-only hosts. We will try to schedule patch times with people for their desktop machines, but we don't want to spend more than a few days on getting every computer patched.

Wed April 26, 2017, 11:01am - SSH from off campus and VPNs failing [RESOLVED]

After a switch on April 10th to a new firewall for the Med School, we noticed that idle ssh sessions were being killed after very short times. This morning, the SMPH Network Group made a change to reduce that timeout, but now we are seeing incomplete ssh negotiation for new ssh sessions, from off campus and from VPNs. Within the Biostat network, ssh is fine.

The SMPH Network Group is aware of this and debugging the issue now. We'll update this status page when we know more.

Mon, Feb 6, 2017, 1:00pm: File Server Outage [Resolved 10:17pm]

Access to the main file server is intermittent. We're working on it now.

10:17pm Update: File system services to user home directories and project directories are now working again.

There will need to be a scheduled outage (perhaps more than one) to deal with additional clean-up and adjustments. The system might be a bit slower than usual for a few days.

Most machines have recovered on their own from the outage, but a few may be so confused they need a reboot. We'll be checking hosts, but please let us know if you run into any stuck machines.