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Maniphest T184721

Alert instrumentation returning 500 errors
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Description

The follwing Icinga error

PROBLEM - PyBal backends health check on lvs1010 is CRITICAL: PYBAL CRITICAL - Bad Response from pybal: 500 Internal Server Error

is caused by PyBal's alerting endpoint returning an HTTP 500 in certain cases

$ curl http://localhost:9090/alerts

<html>
  <head><title>500 - Request did not return bytes</title></head>
  <body>
    <h1>Request did not return bytes</h1>
    <p>Request: <pre>&lt;Request at 0x7f34ad625878 method=GET uri=/alerts clientproto=HTTP/1.1&gt;</pre><br />Resource: <pre>&lt;pybal.instrumentation.Alerts instance at 0x7f34acd22170&gt;</pre><br />Value: <pre>u'CRITICAL - thumbor_8800: Servers thumbor1004.eqiad.wmnet, thumbor1002.eqiad.wmnet, thumbor1003.eqiad.wmnet are marked down but pooled'</pre></p>
  </body>
</html>

Details

Related Changes in Gerrit:
SubjectAuthorRepoBranchLines +/-
Alerts instrumentation: return instance of bytesEmaoperations/debs/pybal1.14+4 -1
Alerts instrumentation: return instance of bytesEmaoperations/debs/pybalmaster+4 -1
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Related Objects

Event Timeline

• ema created this task.Jan 11 2018, 1:58 PM
Restricted Application added a subscriber: Aklapper. · View Herald TranscriptJan 11 2018, 1:58 PM
• ema triaged this task as High priority.Jan 11 2018, 1:58 PM
gerritbot subscribed.Jan 11 2018, 2:52 PM

Change 403664 had a related patch set uploaded (by Ema; owner: Ema):
[operations/debs/pybal@master] Alerts instrumentation: return instance of bytes

https://gerrit.wikimedia.org/r/403664

gerritbot added a project: Patch-For-Review.Jan 11 2018, 2:52 PM
gerritbot added a comment.Jan 11 2018, 3:06 PM

Change 403664 merged by Ema:
[operations/debs/pybal@master] Alerts instrumentation: return instance of bytes

https://gerrit.wikimedia.org/r/403664

gerritbot added a comment.Jan 11 2018, 3:06 PM

Change 403671 had a related patch set uploaded (by Ema; owner: Ema):
[operations/debs/pybal@1.14] Alerts instrumentation: return instance of bytes

https://gerrit.wikimedia.org/r/403671

gerritbot added a comment.Jan 11 2018, 3:08 PM

Change 403671 merged by Ema:
[operations/debs/pybal@1.14] Alerts instrumentation: return instance of bytes

https://gerrit.wikimedia.org/r/403671

• ema moved this task from Backlog to In Progress on the PyBal board.Jan 11 2018, 3:11 PM
• ema moved this task from Backlog to LoadBalancer on the Traffic board.Jan 15 2018, 10:16 AM
Stashbot mentioned this in T184715: pybal's "can-depool" logic only takes downServers into account.Jan 17 2018, 4:52 PM
Stashbot subscribed.

Mentioned in SAL (#wikimedia-operations) [2018-01-17T16:52:43Z] <ema> upgrade secondary LVSs to pybal 1.13.4 T184715, T184721

Stashbot added a comment.Jan 17 2018, 5:06 PM

Mentioned in SAL (#wikimedia-operations) [2018-01-17T17:06:10Z] <ema> upgrade pybal on primary LVSs to 1.14.3 T184715, T184721

• ema closed this task as Resolved.Jan 17 2018, 5:20 PM
• ema claimed this task.
• 238482n375 removed • ema as the assignee of this task.Jun 15 2018, 8:04 AM
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• 238482n375 edited subscribers, added: • 238482n375; removed: Aklapper.

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Aklapper assigned this task to • ema.Jun 15 2018, 1:06 PM
Aklapper raised the priority of this task from Lowest to High.Jun 15 2018, 1:07 PM
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Aklapper edited subscribers, added: Aklapper; removed: • 238482n375.
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