Splunk DB Connect 3: How to resolve "HTTP Error 503: Service Unavailable" error on db input?

[scelikok]

DBInput from MSSQL database is not working because it cannot write records .

Can you help me how to fix this? Error log is below, Splunk version is 6.5.3 and Splunk DB Connect is the latest.

2017-04-28 13:41:02.548 +0300  [QuartzScheduler_Worker-3] ERROR org.easybatch.core.job.BatchJob - Unable to write records
java.io.IOException: HTTP Error 503: Service Unavailable
    at com.splunk.dbx.server.dbinput.recordwriter.HttpEventCollector.uploadEventBatch(HttpEventCollector.java:94)
    at com.splunk.dbx.server.dbinput.recordwriter.HttpEventCollector.uploadEvents(HttpEventCollector.java:71)
    at com.splunk.dbx.server.dbinput.task.processors.HecEventWriter.writeRecords(HecEventWriter.java:40)
    at org.easybatch.core.job.BatchJob.writeBatch(BatchJob.java:203)
    at org.easybatch.core.job.BatchJob.call(BatchJob.java:79)
    at org.easybatch.extensions.quartz.Job.execute(Job.java:59)
    at org.quartz.core.JobRunShell.run(JobRunShell.java:202)
    at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:573)
Collapse
host =  SplLab source = /opt/splunk/var/log/splunk/splunk_app_db_connect_server.log sourcetype =    dbx_server

Thank you...

[scelikok · Accepted solution]

I found that the problem is on HTTP Event Collector itself. When I tested using curl, I got Server busy error.

I fixed this by removing "useDeploymentServer=1" parameter in /opt/splunk/etc/apps/splunk_httpinput/local/inputs.conf.

Thanks to @starcher 's comment on "After configuring the HTTP Event Collector, why am I receiving a "Server is busy" error?" question.

Now DBConnect is working fine.