Summer Quarter 2018 Maintentance Events

ICS Computing Support Maintenance Calendar

Fall quarter Maintenance has been schedule for 9/17/2018. Please check the Summer Maint. website for updates. Send email to helpdesk@ics.uci.edu to have maintenance rescheduled.

• Date: 9/17/2018
• Time: All Day

Affected Hosts: Large number of ICS Hosts

Reason: Switch unresponsive to remote logins.

Impact: These switches provide network connection for a large number of servers. As the firmware update occurs, except network interruptions of up to 1 hour. If you have a server that needs uninterrupted network connection, please email helpdesk@ics.uci.edu with the server name and the reason.

Affected Hosts:

• john-luther.ics.uci.edu
• ldap3.ics.uci.edu (john-luther-v0.ics.uci.edu)
• gitlab.ics.uci.edu (john-luther-v1.ics.uci.edu)

Reason: Relocating server to rack with emergency power.

Impact:

• gitlab will be unavailable during this period.

Affected Hosts:

• Pedigree cluster
• Beem2 and Beem3

Reason: Relocating power to 110V to free up power needed for another project.

Impact: The server will be turned off for about 10-15 minutes while power is rerouted. This will happen after the servers are patched. Rather than a reboot, a brief shutdown will occur instead.

Affected Hosts: All ICS and IGB CentOS6/7 hosts.

Reason: Patching multiple critical vulnerabilities that can lead to loss of sensitive information and allow attackers to preform trivial DDOS exploits.

• Kernel Side-Channel Attack using L1 Terminal Fault: CVE-2018-3620 and CVE-2018-3646
• Segmentsmack TCP implementations vulnerable to Denial of Service: CVE-2018-5390

Impact:

Kernel packages updates are required to mitigate these vulnerabilities. New kernel packages will be installed to all CentOS6/7 followed by a reboot to load the new kernel.

If this downtime would cause hardship for your research, please send mail to helpdesk@ics.uci.edu to setup an alternate schedule.

Affected Hosts: ICS Hosts using DHCP

Reason: Upgrading to ISC KEA DHCP Server.

Impact: Clients should not experience any interuption in service.

• SYSTEM: Gitlab Server
• DATE: September 17, 2018
• START TIME: 0800
• DURATION: 2 hours

(Please note this is an estimate; systems may be up sooner or later than expected, due to unforeseeable circumstances.)

During this downtime window, the ICS Gitlab server will be unavailable.

The GitLab server will be updated to the latest security release, 11.1.2.

• SYSTEM: melvil-dewey-v0.ics.uci.edu
• DATE: September 17, 2018
• START TIME: 0600
• DURATION: 15 minutes

(Please note this is an estimate; systems may be up sooner or later than expected, due to unforeseeable circumstances.)

During this period the MySQL server will be unavailable. Any dependent websites, including https://www.ics.uci.edu, and applications will be unavailable.

A restart is required in order to limit the size of the ibtmp1 caching file.

• SYSTEM: All ICS Systems
• DATE: Sept 14, 2018

Affected Hosts: All ICS hosts

Reason: Upgrading to the latest version of Virtual Box on all ICS hosts between quarters.

Impact: Running VM's may require a restart. No other service outage anticipated.

• SYSTEM: All ICS Systems
• DATE: Sept 14, 2018

Affected Hosts: All ICS hosts

Reason: Upgrading to the latest version of Vagrant on all ICS hosts between quarters.

Impact: Running VM's may require a restart. No other service outage anticipated.

• SYSTEM: odin.ics.uci.edu
• DATE: Aug 27, 2018
• START TIME: 1130
• DURATION: 2 hours

Affected Hosts: odin.ics.uci.edu.

Reason: Dell Tech will be onsite replacing failed parts.

Impact: 2 hours downtime/interruption on odin host.

This is an estimate and systems may be down longer or back online sooner than estimated.

• SYSTEM: Odin Server
• DATE: Aug 27, 2018
• START TIME: 10:00
• DURATION: 2 hours

Affected Hosts: odin.ics.uci.edu.

Reason: Upgrading the BIOS firmware to fix the CPU error, referring to ticket #68146.

Impact: 2 hours downtime/interruption on odin host.

If this downtime would cause hardship for your research, please send mail to helpdesk@ics.uci.edu to setup an alternate schedule.