Reported Outages

Launch issues at CHI@TACC

Resolved Posted by Francois Halbach on March 29, 2021
Outage start Friday, March 26, 2021 6 p.m.
Expected end Monday, March 29, 2021 1:56 p.m.

Resolved: Chameleon staff has confirmed that the launch issue has been corrected.

CHI@TACC is experiencing launch issues for new instances since Friday. We are investigating and will provide an update once functionality is restored. CHI@UC is still available at

CHI@TACC experiment network disruption

Resolved Posted by Jason Anderson on March 24, 2021
Outage start Wednesday, March 24, 2021 4:40 p.m.
Expected end Wednesday, March 24, 2021 7:45 p.m.

We're currently experiencing issues with experimental networks at CHI@TACC, which affects external connectivity to your bare metal instances via, e.g., SSH.

Stiching outage for CHI@TACC

Resolved Posted by Cody Hammock on March 19, 2021
Outage start Monday, February 22, 2021 12 a.m.
Expected end Friday, March 26, 2021 12 p.m.

As of February 22, 2021 the path for stitable networking has been interrupted on the TACC side. The TACC site networking team is aware of this issue and is pursuing a solution.

Planned maintenance on auth server 02/20

Resolved Posted by Jason Anderson on February 16, 2021
Outage start Saturday, February 20, 2021 12 p.m.
Expected end Saturday, February 20, 2021 12:01 p.m.

ANL is performing maintenance of the underlying cluster that powers the Chameleon auth server. For some period between 12pm and 5pm, the auth server may be unavailable. This will affect logins to Chameleon sites and the Jupyter environment, but existing experiments will be unaffected.

Network outage at TACC - January 5, 2021

Resolved Posted by Cody Hammock on January 05, 2021
Outage start Tuesday, January 05, 2021 6:16 a.m.
Expected end Tuesday, January 05, 2021 11:16 a.m.

Dear Chameleon Users,

There was an interruption to networking affecting Chameleon systems hosted at TACC, from about 6:15  to 11:15 this morning. This included the Chameleon Portal. CHI@UC was not affected.

Service has been restored.

Thank you for your patience.

TACC network outage 10 Dec 2020

Resolved Posted by Cody Hammock on December 10, 2020
Outage start Thursday, December 10, 2020 2:15 p.m.
Expected end Thursday, December 10, 2020 2:52 p.m.

Network outage at TACC.

Planned power maintenance 2020-10-19

Resolved Posted by Jason Anderson on October 14, 2020
Outage start Monday, October 19, 2020 6 a.m.
Expected end Tuesday, October 20, 2020 3 p.m.

There will be a total site outage for Chameleon on Monday, October 19th, due to maintenance on the power system in the data center. While we don't expect the outage to take all day, we are blocking out a wide time slot just in case. During this time, users will be unable to access Chameleon resources.

CHI@UC network outage 2020-10-01

Resolved Posted by Jason Anderson on October 01, 2020
Outage start Thursday, October 01, 2020 9:20 a.m.
Expected end Thursday, October 01, 2020 10:45 a.m.

We are experiencing an unplanned network outage due to unforseen consequences of a networking config change earlier in the day. This is affecting the CHI@UC site and the Jupyter environment. We are working on a fix right now and hope to be back up shortly, thanks for the patience.

Reservation service outage for bare-metal sites

Resolved Posted by Zhuo Zhen on September 22, 2020
Outage start Monday, September 21, 2020 6 p.m.
Expected end Tuesday, September 22, 2020 10:38 a.m.

We are having issues with the Chameleon reservation service (Blazar) on both the bare metal sites. You may not be able to create or update your leases. We are working on fixing the issue now.

JupyterHub outage 2020-09-03

Resolved Posted by Jason Anderson on September 03, 2020
Outage start Thursday, September 03, 2020 10:11 a.m.
Expected end Thursday, September 03, 2020 9:46 a.m.

There was a brief outage of the JupyterHub environment this morning for 25 minutes, when a bad build was released.