Attention eClass users,

Welcome back, we hope everyone had a restful break! Here are some important reminders for instructors as we start this term with remote  delivery:

• As a part of the resolution of our recent performance issues, a number of system features that were creating a heavy performance load on the database have been removed from eClass. These changes include:
  • In the Collapsed Topics and Collapsed Labels course formats, the option to show activity summary statistics in the

We are pleased to report that we have now concluded our investigations into the eClass outages that occurred on December 20, 21 and 22. After rigorous testing, our teams were able to pinpoint, replicate, and resolve the root cause.

As a brief summary, there was a sequence of issues that combined to cause eClass to fail:

• On December 20, in preparation for Winter term, an instructor copied the previous year’s instance of a course forward. That is standard practice, facilitates course

Attention eClass Users,

Over the past several days our teams have been performing load tests on both the public and testing environments of eClass. Results of those tests have not been able to replicate the issues experienced during the exam period. This again suggests that multiple complex interactions between the moodle application, the database, and the infrastructure added up to create the outages.

Although we have not yet identified a root cause, we have identified several system

Attention eClass Users,

As per our latest update on recent eClass outages, there will be an additional series of overnight maintenance windows for eClass over the next few days to prepare eClass for the start of Winter term. These outages will be held in the following windows:

• Friday Dec. 31st 12:00AM (Midnight) - 6:00AM
• Saturday Jan. 1st 12:00AM (Midnight) - 6:00AM
• Sunday Jan. 2nd 12:00AM (Midnight) - 6:00AM
• Monday Jan. 3rd 12:00AM (Midnight) - 6:00AM

eClass may be unavailable for

Good afternoon everyone,

Since the end of Fall term, the IST infrastructure and eClass teams along with Amazon Web Services and external consultants have been working diligently to diagnose the issues experienced during the final exam period. However, a definitive root cause has not been identified. This suggests multiple issues added up to cause the outages. Over the last several days, work has concentrated on detailed reviews of all infrastructure configuration to check for any errors,

UPDATE: Maintenance is complete and access to eClass has been restored.

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Attention eClass users,

There will be a brief outage this morning December 30th, 2021 from 9:30PM - 10:30AM. This outage is required to run performance tests on the site after last night's database cleanup.

eClass will be unavailable during this maintenance but the testing process may not take up the full window.

We apologize for the timing of this interruption. If you have any questions about this outage,