ITS Service Status Report

Scheduled Maintenance — Resolved

BlueCat quarterly security patching part 1 of 2

Services Affected: BlueCat quarterly security patching part 1 of 2

Start Time: 11/21/2020 11:00 pm

Maintenance Completed: 11/22/2020 12:25 am

Issue Symptoms: Outage

Quarterly security updates from BlueCat vendor. Apply to Web/DB servers and one pair of DHCP servers the first weekend, apply to the rest the second weekend.
Ten minute outage to the BlueCat web interface (bluecat.umnet.umich.edu) and the Netreg web interface (netreg.it.umich.edu), but no outage to actual DNS and DHCP services.

Domain Name Service (DNS) is the service that converts internet names (like www.umich.edu) into network addresses (like 141.211.243.251).
Dynamic Host Configuration Protocol (DHCP) provides network configuration to computers that connect to the network, including their IP Address, subnet mask, network gateway, time server, DNS domain, etc.
BlueCat is the system that provides DNS and DHCP services.
Netreg provides an easy way for users to register devices into BlueCat.

Who is Impacted? Bluecat admins

Next Update: 11:59 PM

Technical Details

Service Type: Production

Server Name: bluecat.umnet.umich.edu, bam-asb-1, bam-macc-2, bdds-its-seb-1, bdds-its-cool-1, netreg.it.umich.edu

Comments:

12:25 AM Completed.

Groups Notified:

Report Additional Impacts

Contact the ITS Service Center for more information or to report additional impacts.