CAS, ryerson.ca, and my.ryerson.ca service interruptions: from 1:38 PM to 2:20 PM , April 14

Posted on April 14, 2020 by Hongbo HE

One of the Central Authentication Service (CAS) application servers had connection issue to back-end database server starting around 1:38 p.m. on April 14. This prevented some users who were on this server from logging in. This server has been restarted at 2:20 p.m. and CAS service has returned to normal. CCS technical team is investigating the root cause.

Update Tuesday April 14 at 5:19 PM.

The issue has been traced to a network issue between our datacentre firewall and a network switch. While the severity of the issue has not always been consistent issues were observed at the following dates and times:
Monday April 13:
7:06 am 
9:34 am
Tuesday April 14:
4:30 am
8:18 am
1:10 pm
1:17 pm
2:30 pm
2:40 pm
3:27 pm
3:36 pm
4:31 pm
CCS has made changes to reduce the probability of further disruptions and is working with our firewall and network vendors to fully resolve the issue.

Update Wednesday April 15 at 10:00 AM.

Two more instances noticed at:

8:51 AM

9:04 AM

At 9:12 IT security team switched the traffic to go through the standby datacentre firewall

We apologize for the inconvenience this has caused.

– Computing and Communications Services

Posted in All Categories, CAS | 2 Comments

eHR service outage: Tuesday, April 14th, 2020

Posted on April 14, 2020 by Hongbo HE

At approximately 8:45 AM, today, April 14th, 2020, the eHR system became unavailable for some users due to a memory issue in one of the web servers.  The server was rebooted and services restored around 9:23 AM.

Please accept our apologies for the problems this outage has caused.

-Computing and Communications Services

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Data Centre outage on Monday April 13 from 7:00 to 7:05 AM

Posted on April 13, 2020 by michael

On Monday April 13, 2020 the data centre firewall appliance lost connectivity to the network. This may have prevented access to the serves inside the data centre during that time. The firewall vendor has been contacted to find the root cause of this outage.

We apologize for any inconvenience this may have caused.

-Computing and Communications Services

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Network outage at CE building on April 10, 2020 from 8:00 AM to 4:30 PM

Posted on April 10, 2020 by michael



On Friday April 10, 2020 the network switch servicing CE building basement floor didn’t come up after a scheduled upgrade. This caused a network outage for the equipment on this floor. The network switch was rebooted and services resumed at 4:30 PM

We apologize for any inconvenience this may have caused.

-Computing and Communications Services



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RU-VPN2 service disruption: Thursday, April 9th, 2020 3:40 pm – 4:30 pm

Posted on April 9, 2020 by Hongbo HE

Starting at approximately 3:40 PM on Thursday, April 9th, users were not able to authenticate to RU-VPN2 via CAS.  This was due to a URL filtering policy that was enabled unintentionally. The policy was disabled and service was restored around 4:30 PM.

We apologize for any inconvenience.

-Computing and Communications Services

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Ryerson Gmail Service Delay on Wed. April 8th, 2020

Posted on April 8, 2020 by Hongbo HE

On Wed., April 8th, 2020 starting at approximately 11:00 AM emails to Ryerson GMail users are delayed. This service disruption only applies to Ryerson GMail and does not impact the other Ryerson Google Services such as Google Drive, Google Calendar and Google Hangout. Google is aware of this issue and has published a service update here. We will update this alert when more information is available.

Update – April 9th, 2020, per Google, the issue has been fixed since 11:58 AM, April 8th.

We apologize for the inconvenience this outage may have caused.

-Computing and Communications Services

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Issue with CAS registration page for Mobile Users Mar. 19 – Mar. 26

Posted on March 26, 2020 by Hongbo HE

Since March 19, 2020, a configuration error in the CAS single-sign on service prevented 62 people from using their mobile devices to reach the second factor registration page. Desktop users were not affected. The issue was rectified today.

We apologize for the inconvenience this error caused.

– Computing and Communications Services

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Issue with ryerson.zoom.us site

Posted on March 20, 2020 by Jim Buchanan

The Zoom video conferencing system experienced a problem with custom domains like ryerson.zoom.us being available today, Friday March 20, from approximately 4:10 PM to 4:34 PM. The site has been restored. The zoom.us site continued to function. We will work with Zoom to determine the cause of the issue.

We apologize for any inconvenience this may have caused.

-Computing and Communications Services

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Issues with www.ryerson.ca

Posted on March 13, 2020 by Jim Buchanan

The Ryerson web server, www.ryerson.ca is currently experiencing slower than normal response times due to an increased load on the server.

CCS is investigating and working to restore full service.

We apologize for any inconvenience.

Update: This issue was resolved on the same day at approximately 12:15 PM.

– Computing and Communications Services

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WiFi interruption on Tuesday March 10, 2019 from 3:55 to 4:25 PM

Posted on March 10, 2020 by michael

On Tuesday March 10, 2020 at 3:55 PM some of the Wireless Access Points all over the campus failed-over to a secondary wireless controller. This caused interruption for the WiFi service in multiple buildings that lasted up to 30 minutes. Network Services is investigating the cause of the fail-over.

We apologize for any inconvenience this may have caused.

-Computing and Communications Services

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