March 27th, 2019 3:59 AM - 4:49 AM PDT
Customers could not start tests or new tunnels. Both the SauceLabs UI and saucelabs.com were unresponsive.
The normal constraints on the volume of concurrent tests allowed to run on our service were inadvertently removed by a configuration change. Without these constraints, the number of running tests rapidly increased to the point that our service became unresponsive.
We corrected this by returning the subsystem config to its proper value and restarting the subsystem.
We’ve hardened our process around managing configuration changes to this subsystem.