====== 2018 Spring Quarter Maintenance Events ======


===== Calendar =====

[[https://calendar.google.com/calendar/embed?src=ics.uci.edu_rbt2q6kmhapqm4bjaet1j48h00@group.calendar.google.com&ctz=America/Los_Angeles|ICS Computing Support Maintenance Calendar]]


====Summer Break Maintenance====
  * Date:  6/18/2018
  * Time:  All Day

=== IGB and Instructional OS Maintenance ===

**Affected Hosts**:  All IGB Computing Hosts and ll instructional computing hosts

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

**Impact**:  
  * **Most** IGB managed hosts in the affected groups will receive the latest OS patches.
  * **Most** IGB hosts will be rebooted.
  * Hosts in the benzene cluster and dover-1 and dover-2 will be defered until after 1pm
  * The Arcus cluster will be updated and reboot on Tuesday morning, 6/26 and new CUDA installed.
  * Instructional hosts will be rebooted

=== Cisco Switch Power switchover ===

**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

**Duration:** 30 minutes

**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.

=== GitLab Server Outage ===

**Time:**  0800

**Duration:** 8 Hours

**Affected Hosts:**  gitlab.ics.uci.edu (rockford-v3.ics.uci.edu)

**Reason:**  Upgrade Gitlab to the version 11.2.3.

**Impact:**  Gitlab functions will be unavailable intermittently during the upgrade. 

==== Mail Scanner Updates ====

**SYSTEM:** ICS MailScanner

**DATE:** 6/13/2018

**REASON:** Email service mail scanners are superior and more consistently maintained than ICS mail scanners. 

**AFFECTS:**  Email messages recieved by ICS that are forwarded onto another email service, including ICS Gmail, will no longer be scanned.

==== Hitachi Fiber Upgrade ====

**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.



==== Mail server migration ====

**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.