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Bug 1609023

Summary:	mmkubernetes - stops working when non-kubernetes container name is read
Product:	Red Hat Enterprise Linux 7	Reporter:	Rich Megginson <rmeggins>
Component:	rsyslog	Assignee:	Rich Megginson <rmeggins>
Status:	CLOSED ERRATA	QA Contact:	Anping Li <anli>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	7.6	CC:	dapospis, dkopecek, jvymazal, ksrot, rmeggins
Target Milestone:	rc	Keywords:	Patch, Triaged
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	rsyslog-8.24.0-31.el7	Doc Type:	No Doc Update
Doc Text:	undefined	Story Points:	---
Clone Of:		Environment:
Last Closed:	2018-10-30 10:17:55 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Rich Megginson 2018-07-26 18:29:08 UTC

Description of problem:
mmkubernetes works fine if the container names are of the form that match the rulebase:

rule=:%k8s_prefix:char-to:_%_%container_name:char-to:.%.%container_hash:char-to:_%_%pod_name:char-to:_%_%namespace_name:char-to:_%_%not_used_1:char-to:_%_%not_used_2:rest%
 rule=:%k8s_prefix:char-to:_%_%container_name:char-to:_%_%pod_name:char-to:_%_%namespace_name:char-to:_%_%not_used_1:char-to:_%_%not_used_2:rest%

but if the CONTAINER_NAME field has a plain docker name e.g. CONTAINER_NAME=test-container then mmkubernetes gives an error and rsyslog suspends it, so it appears to stop working, and further records are not annotated

Version-Release number of selected component (if applicable):


How reproducible:
every time

Steps to Reproduce:
1. deploy openshift with docker log-driver=journald and rsyslog with mmkubernetes
2. run a container using docker that outputs log messages (i.e. prints to stdout/stderr - docker logs returns something)
3. once rsyslog reads this record, it stops annotating subsequent records

Actual results:


Expected results:


Additional info:

Comment 1 openshift-github-bot 2018-07-26 23:35:50 UTC

Commit pushed to master at https://github.com/openshift/origin-aggregated-logging

https://github.com/openshift/origin-aggregated-logging/commit/b916865e4006358fac5278b2d44d5b22c6382f0d
parse embedded json in log/MESSAGE fields

use mmnormalize with `.:json` to parse embedded JSON strings
in the `$!MESSAGE` and `$!log` fields into top level fields in
the record.
Refactor the parsing code into viaq_formatting where all of the
viaq data model specific formatting lives.
Add additional metadata fields such as received_at, file, offset
Clean up code around timestamps to avoid .operations... indices
with no dates.

workaround for bug 1609023

https://bugzilla.redhat.com/show_bug.cgi?id=1609023
the return value of ln_normalize does not differentiate between
a hard error and the no match case.  The workaround is to make
sure there is always a match for CONTAINER_NAME, and let the
mmkubernetes code determine there is no match due to missing
pod and namespace name.

Comment 3 Rich Megginson 2018-07-27 13:26:14 UTC

PR was merged upstream - https://github.com/rsyslog/rsyslog/commit/9535835460e79c132f7a259bc2d198a4aae6c6d4

Comment 10 Anping Li 2018-09-04 16:47:47 UTC

The fix works weel in OCP 3.11 and ryslog-8.24.0-34. @dapospis， You can move to next status.

atomic-openshift-3.11.0-0.25.0.git.0.a95c194.el7.x86_64
rsyslog-8.24.0-34.el7.x86_64
rsyslog-mmjsonparse-8.24.0-34.el7.x86_64
rsyslog-mmnormalize-8.24.0-34.el7.x86_64
rsyslog-elasticsearch-8.24.0-34.el7.x86_64
rsyslog-mmkubernetes-8.24.0-34.el7.x86_64

Comment 13 errata-xmlrpc 2018-10-30 10:17:55 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHEA-2018:3135