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Instructional & Research Information Systems

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DNS

Domain Name Service

DNS disruption for eecs.berkeley.edu, Nov 19

November 20, 2024 by Lars Rohrbach

Tuesday afternoon and evening, November 19, we had a disruption of DNS resolution for the eecs.berkeley.edu domain on the campus nameservers. This meant that many systems outside of the EECS network were temporarily unable to resolve *.eecs.berkeley.edu hostnames — so people may have been temporarily unable to reach EECS websites or deliver email to some @eecs.berkeley.edu addresses.

[Read more…] about DNS disruption for eecs.berkeley.edu, Nov 19

Filed Under: Resolved Incidents Services: DNS

New DNS Nameserver: themis.eecs

October 4, 2024 by Lars Rohrbach

System administrators in EECS may be familiar with our DNS nameservers cronus and rhea. We now have a new nameserver, physically located in Cory Hall, named themis. If your systems are typical DHCP clients, or you don’t use the EECS wired network, then you should have nothing to change.

We are planning to replace and retire rhea according to the following schedule:

  • Thu Oct 15 — We will update our DHCP configuration, telling Cory Hall DHCP clients to use themis and cronus, and telling other DHCP clients to use cronus and themis.
  • November/December — We will monitor any continued usage of rhea for DNS, and periodically alert system administrators so they can update their systems to use themis instead.
  • early January — We will retire rhea, but will point its name and IP address at cronus.

Filed Under: Highlights, News Services: DNS

November IRIS Server Patching

November 13, 2023 by Lars Rohrbach

Microsoft will release their patches for the month on Tuesday, November 14th, 2023. Various IRIS Windows and Linux servers will be patched and rebooted Tuesday or Wednesday.

PRINT, WINTERM and WDS will automatically patch and reboot Wednesday, November 15th, at 3:00am. WINTERM may be unavailable till 10:00am Wednesday, November 15th, depending on additional software updates.

Linux servers lists.eecs, iris2.eecs (for access to the network and roster databases), and login.eecs will be patched and rebooted Tuesday night. DNS servers cronus and rhea may also be briefly unavailable while rebooting at approximately 8:00pm Tuesday.

On Wednesday, November 15th, the departmental DHCP server is scheduled for downtime from 10pm to 10:30pm (actual downtime is expected to be shorter than scheduled).

[Read more…] about November IRIS Server Patching

Filed Under: Resolved Incidents Services: DHCP, DNS, Mailing Lists, Print Server, Unix Login Server, WDS, winterm.eecs

October IRIS Server Patching

October 6, 2023 by Lars Rohrbach

Microsoft will release their patches for the month on Tuesday, October 10th, 2023. Various IRIS Windows and Linux servers will be patched and rebooted Tuesday or Wednesday.

PRINT, WINTERM and WDS will automatically patch and reboot Wednesday, October 11th, at 3:00am. WINTERM may be unavailable till 10:00am Wednesday, October 11th, depending on additional software updates.

Linux servers lists.eecs, iris2.eecs (for access to the network and roster databases), and login.eecs will be patched and rebooted Tuesday night. DNS servers cronus and rhea may also be briefly unavailable while rebooting at approximately 8:00pm Tuesday.

On Wednesday, October 11th, the departmental DHCP server is scheduled for downtime from 10pm to 10:30pm (actual downtime is expected to be shorter than scheduled).

[Read more…] about October IRIS Server Patching

Filed Under: Resolved Incidents Services: DHCP, DNS, IRIS Website, Mailing Lists, NTP, Print Server, Unix Login Server, WDS, winterm.eecs

Various Linux servers (login, dhcp, DNS, SMTP, NTP) downtime Wednesday, August 9, 2023

August 7, 2023 by Lars Rohrbach

Various Linux servers will be down for patching and needed reboots to activate changes delivered by some RHEL patches.

The departmental dhcp server is scheduled for downtime from 10pm to 10:30pm. login.EECS.Berkeley.EDU is scheduled for downtime from 10:30pm to 11pm. Other Linux hosts (e.g. DNS servers cronus and rhea, and SMTP server gateway.eecs) may also be briefly unavailable while rebooting approximately 6-7pm.

We expect actual downtimes to be shorter than scheduled.

[Read more…] about Various Linux servers (login, dhcp, DNS, SMTP, NTP) downtime Wednesday, August 9, 2023

Filed Under: Resolved Incidents Services: DHCP, DNS, NTP, SMTP, Unix Login Server

Various Linux servers (login, dhcp, DNS, SMTP, NTP) downtime Tuesday June 13, 2023 06:30-07:45 am

June 12, 2023 by Mark Kraitchman

Various Linux servers will be down for patching and needed reboots to activate changes delivered by some RHEL patches.

login.EECS.Berkeley.EDU is scheduled for downtime from 6:30am to 7am.

The departmental dhcp server is scheduled for downtime from 6:30am to 7am.

cronus one of the departmental DNS and time servers is scheduled for downtime from 6:45am-7:00am.

rhea the other departmental DNS and time server is scheduled for downtime from 7:00am-7:15am.

The departmental authenticating outgoing SMTP server gateway.eecs is scheduled for downtime from 7:30am to 7:45am.

We expect actual downtimes to be less than scheduled.

[Read more…] about Various Linux servers (login, dhcp, DNS, SMTP, NTP) downtime Tuesday June 13, 2023 06:30-07:45 am

Filed Under: Resolved Incidents Services: DHCP, DNS, NTP, SMTP Server, Unix Login Server

Various Linux servers (login, dhcp, DNS, SMTP, NTP) downtime Tuesday May 2, 2023 06:30-07:45 am

May 1, 2023 by Mark Kraitchman

Various Linux servers will be down for patching and needed reboots to activate changes delivered by some RHEL patches.

login.EECS.Berkeley.EDU is scheduled for downtime from 6:30am to 7am.

The departmental dhcp server is scheduled for downtime from 6:30am to 7am.

cronus one of the departmental DNS and time servers is scheduled for downtime from 6:45am-7:00am.

rhea the other departmental DNS and time server is scheduled for downtime from 7:00am-7:15am.

The departmental authenticating outgoing SMTP server gateway.eecs is scheduled for downtime from 7:30am to 7:45am.

We expect actual downtimes to be less than scheduled.

[Read more…] about Various Linux servers (login, dhcp, DNS, SMTP, NTP) downtime Tuesday May 2, 2023 06:30-07:45 am

Filed Under: Resolved Incidents Services: DHCP, DNS, NTP, SMTP, Unix Login Server

Various Linux servers (login, dhcp, DNS, SMTP, NTP) downtime Wednesday March 15, 2023 06:30-07:45 am

March 14, 2023 by Mark Kraitchman

Various Linux servers will be down for patching and needed reboots to activate changes delivered by some RHEL patches.

login.EECS.Berkeley.EDU is scheduled for downtime from 6:30am to 7am.

The departmental dhcp server is scheduled for downtime from 6:30am to 7am.

cronus one of the departmental DNS and time servers is scheduled for downtime from 6:45am-7:00am.

rhea the other departmental DNS and time server is scheduled for downtime from 7:00am-7:15am.

The departmental authenticating outgoing SMTP server gateway.eecs is scheduled for downtime from 7:30am to 7:45am.

We expect actual downtimes to be less than scheduled.

[Read more…] about Various Linux servers (login, dhcp, DNS, SMTP, NTP) downtime Wednesday March 15, 2023 06:30-07:45 am

Filed Under: Resolved Incidents Services: DHCP, DNS, NTP, SMTP Server, Unix Login Server

Various Linux servers (login, dhcp, DNS, SMTP, NTP) downtime Tuesday January 31, 2023 06:30-07:45 am

January 30, 2023 by Mark Kraitchman

Various Linux servers will be down for patching and needed reboots to activate changes delivered by some RHEL patches.

login.EECS.Berkeley.EDU is scheduled for downtime from 6:30am to 7am.

The departmental dhcp server is scheduled for downtime from 6:30am to 7am.

cronus one of the departmental DNS and time servers is scheduled for downtime from 6:45am-7:00am.

rhea the other departmental DNS and time server is scheduled for downtime from 7:00am-7:15am.

The departmental authenticating outgoing SMTP server gateway.eecs is scheduled for downtime from 7:30am to 7:45am.

We expect actual downtimes to be less than scheduled.

[Read more…] about Various Linux servers (login, dhcp, DNS, SMTP, NTP) downtime Tuesday January 31, 2023 06:30-07:45 am

Filed Under: Resolved Incidents Services: DHCP, DNS, NTP, SMTP, Unix Login Server

Various Linux servers (login, dhcp, DNS, SMTP, NTP) downtime Tuesday December 20, 2022 06:30-07:45 am

December 19, 2022 by Mark Kraitchman

Various Linux servers will be down for patching and needed reboots to activate changes delivered by some RHEL patches.

login.EECS.Berkeley.EDU is scheduled for downtime from 6:30am to 7am.

The departmental dhcp server is scheduled for downtime from 6:30am to 7am.

cronus one of the departmental DNS and time servers is scheduled for downtime from 6:45am-7:00am.

rhea the other departmental DNS and time server is scheduled for downtime from 7:00am-7:15am.

The departmental authenticating outgoing SMTP server gateway.eecs is scheduled for downtime from 7:30am to 7:45am.

We expect actual downtimes to be less than scheduled.

[Read more…] about Various Linux servers (login, dhcp, DNS, SMTP, NTP) downtime Tuesday December 20, 2022 06:30-07:45 am

Filed Under: Resolved Incidents Services: DHCP, DNS, NTP, SMTP Server, Unix Login Server

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