Columbia University Information Technology

Service Alerts

F5 NETWORK LOAD BALANCER - SCHEDULED MAINTENANCE

Service Impact: 
Alert Date: 
06/18/2013 - 06:30am to 06/18/2013 - 06:55am
Main Content
Alert Message: 

Update: Maintenance was completed at 0635 without incident. Maintenance window is closed as of 0655.  

On Tuesday June 18th, 2013 starting at 6:30AM, CUIT will perform maintenanceof the F5 network load balancers. During this maintenance, we will be failing over between systems. The maintenance window will be 1 hour. 

We expect most services to transition to the backup load balancer with
minimal client-facing disruption. However, on-going sessions of load-balanced
applications and web sites could be disrupted. The disruption could be
momentary, or could require that clients re-initiate sessions. There is a
chance, however, that some applications will be unavailable for part of the
maintenance window.

Customers who are concerned about this maintenance impacting their sites or
applications should contact their service support teams.


Services that depend on the F5 Network Load Balancer and may be affected include the following:

  • ARC
  • CourseWorks
  • CUIT's Wordpress infrastructure
  • CUIT's Drupal infrastructure and hosted sites/applications
  • CUIT's Lamp infrastructure and hosted sites/applications
  • LDAP

CUIT apologizes for any inconvenience caused by this essential maintenance.

If customers have questions about the maintenance, or if clients experience issues after the posted maintenance hours, please contact the CUIT Service Desk.

The CUIT Service Desk can be reached via email at askcuit@columbia.edu [1], or by phone: 212-854-1919.