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https://issues.apache.org/jira/browse/KNOX-1091?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16406636#comment-16406636
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Kevin Risden commented on KNOX-1091:
------------------------------------
Attached new patch with test for auditlogging specifically that worked on just
GatewayFilter. Previously the tests didn't catch the problem of the MDC not
being cleared if GatewayFilter was only being used.
> Knox Audit Logging - duplicate correlation ids
> ----------------------------------------------
>
> Key: KNOX-1091
> URL: https://issues.apache.org/jira/browse/KNOX-1091
> Project: Apache Knox
> Issue Type: Bug
> Components: Server
> Affects Versions: 0.9.0, 0.10.0, 0.11.0, 0.12.0, 0.13.0, 0.14.0, 1.0.0
> Reporter: Kevin Risden
> Assignee: Kevin Risden
> Priority: Major
> Labels: audit
> Fix For: 1.1.0
>
> Attachments: KNOX-1091.patch, KNOX-1091.patch
>
>
> From the Knox User list thread: "Multiple topology audit logging", it came to
> my attention that Knox seems to be logging duplicate correlation ids.
> Separating out the topic specifically here to dig a bit deeper.
> While looking at our Knox audit logs (Knox 0.9 on HDP 2.5) the "correlation
> id" doesn't seem to be unique across requests. Is this to be expected? Here
> is a snippet (anonymized):
> grep 7557c91b-2a48-4e09-aefc-44e9892372da /var/knox/gateway-audit.log
> {code}
> 17/10/10 12:50:09
> ||7557c91b-2a48-4e09-aefc-44e9892372da|audit|WEBHBASE||||access|uri|/gateway/HADOOPTEST/hbase/hbase/NAMESPACE1:TABLE1/ID1//|unavailable|Request
> method: GET
> 17/10/10 12:50:09
> ||7557c91b-2a48-4e09-aefc-44e9892372da|audit|WEBHBASE|USER1|||authentication|uri|/gateway/HADOOPPROD/hbase/NAMESPACE2:TABLE2/multiget?row=ID2%2fd%3araw&|success|
> 17/10/10 12:50:09
> ||7557c91b-2a48-4e09-aefc-44e9892372da|audit|WEBHBASE|USER1|||authentication|uri|/gateway/HADOOPPROD/hbase/NAMESPACE2:TABLE2/multiget?row=ID2%2fd%3araw&|success|Groups:
> []
> 17/10/10 12:50:09
> ||7557c91b-2a48-4e09-aefc-44e9892372da|audit|WEBHBASE|USER1|||dispatch|uri|http://WEBHBASE.example.com:8084/NAMESPACE2:TABLE2/multiget?doAs=USER1&row=ID2%2Fd%3Araw|unavailable|Request
> method: GET
> 17/10/10 12:50:09
> ||7557c91b-2a48-4e09-aefc-44e9892372da|audit|WEBHBASE|USER1|||dispatch|uri|http://WEBHBASE.example.com:8084/NAMESPACE2:TABLE2/multiget?doAs=USER1&row=ID2%2Fd%3Araw|success|Response
> status: 200
> 17/10/10 12:50:09
> ||7557c91b-2a48-4e09-aefc-44e9892372da|audit|WEBHBASE|USER1|||access|uri|/gateway/HADOOPPROD/hbase/NAMESPACE2:TABLE2/multiget?row=ID2%2fd%3araw&|success|Response
> status: 200
> 17/10/10 12:50:09
> ||7557c91b-2a48-4e09-aefc-44e9892372da|audit|WEBHBASE||||authentication|principal|USER2|failure|LDAP
> authentication failed.
> 17/10/10 12:50:09
> ||7557c91b-2a48-4e09-aefc-44e9892372da|audit|WEBHBASE||||access|uri|/gateway/HADOOPTEST/hbase/hbase/NAMESPACE1:TABLE2/ID1//|success|Response
> status: 401
> {code}
> The things to highlight here for the same correlation id:
> * different topologies are being used
> * different uris are being used
> * different users are being used
> Some of the things that we have configured that could impact results:
> * authentication caching
> * multiple Knox servers
> * load balancer in front of Knox
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