Details
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Bug
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Status: Resolved (View Workflow)
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Blocker
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Resolution: Fixed
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17.1.1, 18.0.0
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Security Level: Default (Default Security Scheme)
Description
When using the JdbcCollector for a MySQL 5.7 server, I saw the following notes in mysql.log:
2016-04-14T13:05:44.692827Z 77 [Note] Aborted connection 77 to db:'information_schema' user: 'opennms' host: '10.1.15.17' (Got an error reading communication packets) 2016-04-14T13:05:44.692829Z 73 [Note] Aborted connection 73 to db:'information_schema' user: 'opennms' host: '10.1.15.17' (Got an error reading communication packets) 2016-04-14T13:05:44.692966Z 89 [Note] Aborted connection 89 to db:'information_schema' user: 'opennms' host: '10.1.15.17' (Got an error reading communication packets) 2016-04-14T13:05:44.693006Z 95 [Note] Aborted connection 95 to db:'information_schema' user: 'opennms' host: '10.1.15.17' (Got an error reading communication packets)
These lines occur on every datacollection interval and stil occur if Polling and Provisioning were disabled. When I disable Collectd I can't see these lines anymore. So there seems to be an issue with the connection handling in JdbcCollector.
I did some further investigation with wireshark. Per collected value a new JDBC connection was created, but only for a few connections I saw a MySQL close at the end before TCP FIN.
