Bug 1740263
Summary: | enable the parsing of docker log-driver=json-file continuation lines using fluent concat plugin | ||
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Product: | OpenShift Container Platform | Reporter: | David Caldwell <dcaldwel> |
Component: | Logging | Assignee: | Rich Megginson <rmeggins> |
Status: | CLOSED ERRATA | QA Contact: | Anping Li <anli> |
Severity: | high | Docs Contact: | |
Priority: | high | ||
Version: | 3.11.0 | CC: | aos-bugs, gferrazs, jcantril, jjerezro, rmeggins, zhigwang |
Target Milestone: | --- | ||
Target Release: | 3.11.z | ||
Hardware: | Unspecified | ||
OS: | Unspecified | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Bug Fix | |
Doc Text: |
Cause: Fluentd did not look for continuation log lines from the docker json-file or journald log driver.
Consequence: Very long log lines were split in Elasticsearch and Kibana.
Fix: Change Fluentd to look for continuation log lines and reconstruct them before sending to Elasticsearch. We used a Fluentd plugin called fluent-plugin-concat to do this. We had to backport the 2.4.0 version to Fluentd 0.12.43 in order to work with OCP 3.11.
Result: Very long log lines are not split in Elasticsearch. The entire log can be viewed in Kibana.
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Story Points: | --- |
Clone Of: | Environment: | ||
Last Closed: | 2019-09-03 15:56:03 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: |
Comment 1
Rich Megginson
2019-08-14 15:15:34 UTC
Verified in 3.11.141. USE_MULTILINE_JSON - default false - if set to true, and you are using docker with --log-driver=json-file (which is the default), Fluentd will reconstruct whole log records from the docker log partial fragments 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/RHBA-2019:2580 *** Bug 1792051 has been marked as a duplicate of this bug. *** |