Spring Quarter 2018 Maintentance Events

ICS Computing Support Maintenance Calendar

• Date: 6/18/2018
• Time: All Day

Affected Hosts: All IGB Computing Hosts, All instructional computing hosts

Reason: Installation of the latest kernel and security patches that include mitigation for the Meltdown and Spectre and Meltdown vulnerabilities.

Impact:

• ALL IGB managed hosts in the affected groups will receive the latest OS patches.
• ALL IGB hosts will be rebooted.
• Instructional hosts will be rebooted

Affected Hosts: richard-castle, dover-1, dover-2, adrian-monk, tiamat, odin, disney, christopher-eccleston, liz-shaw, tom-baker, addison

Reason: Cisco switch is currently on a redundant power supply. When the RPS is turned off, it is expected for the Cisco switch to cut over to the main power.

Impact: All the hosts listed will lose network connection if the Cisco switch doesn't switch over to the main power as expected. Network connection should be back online in about 10 minutes.

=== MySQL Server Outage ===\

Time: 0700-0800

Affected Hosts: mysql0.ics.uci.edu

Reason: This is being done in order to make a new slave to the master MySQL server.

Impact: Services dependent on central database server will be unavailable. This includes most ICS web apps.

SYSTEM: ICS Hitachi Storage

DATE: 4/16/2018

START TIME: 0700

DURATION: 1 hour

REASON: Old fiber is being swapped with new ones to add more speed and bandwidth to the storage device.

AFFECTS: People with data on the device, ugrads that use the scratch space, and vagrant users can see some downtime.

SYSTEM: SMTP (kate-beckett-v1, nancy-drew-v1, adrian-monk-v3), IMAP (columbo-v0, addison-v3, rockford-v4), MDA (kate-beckett-v5, nancy-drew-v5)

DATE: 4/10/2018

START TIME: 0700

DURATION: 1 hour

REASON: These hosts are being moved to the new haproxy servers.

AFFECTS: Mail hosts are all affected by this change.