| Outage start | Thursday, November 06, 2025 9 a.m. |
| Expected end | Friday, November 07, 2025 5:14 p.m. |
The CHI@Edge maintenance has now concluded. All smoke tests are passing, and we're observing significant performance improvements for floating IP connectivity and the reliability of container launches.
| Outage start | Monday, November 10, 2025 8 a.m. |
| Expected end | Monday, November 10, 2025 12 p.m. |
On November 10, 2025 the Chameleon site at TACC will be transitioning cluster connectivity to new switch hardware. During a window of approximately one hour, interruptions of less than a minute will affect traffic to services and instances at CHI@TACC, KVM@TACC, and CHI@Edge as individual links are moved.
| Outage start | Saturday, September 27, 2025 6 a.m. |
| Expected end | Monday, October 20, 2025 11:34 a.m. |
Update 10/20/2025:
The remaining maintenance for composable hardware has now been completed.
Update 10/02/2025:
KVM@TACC and CHI@Edge are now back to normal.
CHI@TACC is back to normal, exept for the following:
Thank you for your patience as we restore these!
| Outage start | Saturday, September 27, 2025 6:30 a.m. |
| Expected end | Saturday, September 27, 2025 11:59 p.m. |
Chameleon Jupyterhub is unavailable.
| Outage start | Monday, September 15, 2025 12 p.m. |
| Expected end | Tuesday, September 16, 2025 12:54 p.m. |
As of the morning of September 16th, the switch has had another issue, and is no longer passing traffic. Staff are investigating, but we do not have an ETA yet.
| Outage start | Thursday, July 31, 2025 6 p.m. |
| Expected end | Friday, August 01, 2025 9:21 p.m. |
This is now resolved.
For those interested in the details, see https://github.com/projectcalico/calico/issues/9622
CHI@Edge containers are currently failing to send any network traffic. This is due to an unanticipated edge case during routine maintenance breaking breaking updates to the calico network database.
| Outage start | Tuesday, July 22, 2025 9:30 a.m. |
| Expected end | Tuesday, July 22, 2025 11 a.m. |
On the morning of July 22, we'll be upgrading the infrastructure hosting trovi. During this time, you will not be able to upload, edit, or launch trovi artifacts. Running Jupyter servers will not be affected.
| Outage start | Monday, July 21, 2025 9 a.m. |
| Expected end | Monday, July 21, 2025 9:05 a.m. |
All functionality should be restored. Please contact the help desk if you encounter any issues.
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On Monday, July 21 we will be upgrading out authentication server. As a result, login to all Chameleon web services will be down, including portal, Jupyter, and horizon. Network connections to running instances will not be affected. We expect the interruption to last 5 minutes.
| Outage start | Saturday, June 07, 2025 6 a.m. |
| Expected end | Monday, June 09, 2025 6 p.m. |
It appears that early morning on Saturday, container launches on CHI@Edge began timing out. We are currently investigating the cause, and will update here.
| Outage start | Sunday, June 01, 2025 9 a.m. |
| Expected end | Tuesday, June 10, 2025 4:28 p.m. |
Update June 10th: The datacenter maintenance has concluded, and CHI@NCAR is back online.