Incidents/2022-04-26 cr2-eqord down

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document status: in-review

Summary

Incident metadata (see Incident Scorecard)
Incident ID 2022-04-26 cr2-eqord down Start 05:13
Task End 07:27
People paged 18 Responder count 5
Coordinators marostegui Affected metrics/SLOs None.
Impact None.

Since the previous evening (April 25), the Telia link from Eqord to Eqiad was down due to a fiber cut. At 05:00 the next morning, a Telia maintenance began that took down our remaining transports from Eqord, to Codfw and Ulsfo. As a result, we were entirely unable to reach the Eqord networking equipment. There was no end-user impact since Eqord is a network-only location with end-user traffic for Codfw and Ulsfo naturally going there directly instead of via Eqord.


cathal@nbgw:~$ ping -c 3 208.115.136.238 PING 208.115.136.238 (208.115.136.238) 56(84) bytes of data. --- 208.115.136.238 ping statistics --- 3 packets transmitted, 0 received, 100% packet loss, time 2055ms

Telia circuit failure logs:

Apr 25 17:32:42 cr2-eqord fpc0 MQSS(0): CHMAC0: Detected Ethernet MAC Remote Fault Delta Event for Port 5 (xe-0/1/5) 
Apr 26 05:11:57 cr2-eqord fpc0 MQSS(0): CHMAC0: Detected Ethernet MAC Remote Fault Delta Event for Port 3 (xe-0/1/3)
Apr 26 05:11:57 cr2-eqord fpc0 MQSS(0): CHMAC0: Detected Ethernet MAC Local Fault Delta Event for Port 0 (xe-0/1/0)
Apr 26 07:15:19 cr2-eqord fpc0 MQSS(0): CHMAC0: Cleared Ethernet MAC Remote Fault Delta Event for Port 3 (xe-0/1/3)
Apr 26 07:15:47 cr2-eqord fpc0 MQSS(0): CHMAC0: Cleared Ethernet MAC Local Fault Delta Event for Port 0 (xe-0/1/0)

Documentation:

Actionables

  • Grant Cathal authorization to be able to create remote hands cases (DONE)

Scorecard

Incident Engagement™ ScoreCard
Question Score Notes
People Were the people responding to this incident sufficiently different than the previous five incidents? (score 1 for yes, 0 for no) 0 Info not logged
Were the people who responded prepared enough to respond effectively (score 1 for yes, 0 for no) 0 Manually escalated to netops
Were more than 5 people paged? (score 0 for yes, 1 for no) 0
Were pages routed to the correct sub-team(s)? (score 1 for yes, 0 for no) 0
Were pages routed to online (business hours) engineers? (score 1 for yes,  0 if people were paged after business hours) 0
Process Was the incident status section actively updated during the incident? (score 1 for yes, 0 for no) 1
Was the public status page updated? (score 1 for yes, 0 for no) 0
Is there a phabricator task for the incident? (score 1 for yes, 0 for no) 0
Are the documented action items assigned?  (score 1 for yes, 0 for no) 1
Is this a repeat of an earlier incident (score 0 for yes, 1 for no) 0
Tooling Was there, before the incident occurred, open tasks that would prevent this incident / make mitigation easier if implemented? (score 0 for yes, 1 for no) 1
Were the people responding able to communicate effectively during the incident with the existing tooling? (score 1 for yes, 0 or no) 1
Did existing monitoring notify the initial responders? (score 1 for yes, 0 for no) 1
Were all engineering tools required available and in service? (score 1 for yes, 0 for no) 1
Was there a runbook for all known issues present? (score 1 for yes, 0 for no) 1
Total score 7