Consolidated Troubleshooting Article for Red Hat Satellite 6.x Candlepin Issues

Issues

• hammer ping shows candlepin in FAIL status with error Message: SSL_connect returned=1 errno=0 state=error: certificate verify failed (unable to get local issuer certificate) on Red Hat Satellite
• Candlepin is not running on Red Hat Satellite 6
• hammer ping shows candlepin FAIL with error Message: SSL_connect returned=1 errno=0 state=error: certificate verify failed (certificate has expired) on Red Hat Satellite
• Candlepin fails to start with psql authentication error despite passwords are OK
• "Oops, we're sorry but something went wrong A backend service [ Candlepin ] is unreachable" error in Satellite's web UI when using customized cryptographic policy on Red Hat Satellite 6.11 server
• Katello::Errors::CandlepinError: Unable to find content with the ID XXX
• The Candlepin service fails in Red Hat Satellite 6 with error "Failed to open TCP connection to localhost:23443 (Connection refused - connect(2) for "localhost" port 23443)"
• [Satellite6] Candlepin not responsive with" JournalStorageManager is not responsive"
• ListenOnCandlepinEvents task is gone, dynflowd service restart does not help
• [Satellite6] Candlepin stays in suspended mode, tomcat restart does not help
• Satellite 6: candlepin and candlepin_auth fail with response "404 Resource Not Found" and "Katello::Resources::Candlepin::CandlepinPing: 404 Resource Not Found" (SSLEngine problem)
• This content is not included.Why do I see "A backend service [ Candlepin ] is unreachable" in Satellite 6 production logs ?
• "RestClient::Gone: Katello::Resources::Candlepin::Consumer: 410 Gone" errors in Red Hat Satellite 6 logs?
• After upgrading to Satellite 6.3, candlepin is in suspended mode
• Candlepin gets stuck during startup forever, logging huge thread dump to error.log
• [Satellite6] foreman-rake katello:reindex (or reimport) fails on Katello::Resources::Candlepin::Consumer: 410 Gone
• [Satellite6] candlepin postgres database grows
• Duplicate entries of ListenOnCandlepinEvents task in Red Hat Satellite 6.
• Satellite 6 upgrade check through satellite-maintain failed on candlepin disk space usage
• After performing an accidental patch on Satellite server, candlepin won't start
• Satellite6 performance issues every day after noon
• [Satellite6] Candlepin request takes a much longer time than it should
• Candlepin timeout when upgrading to Red Hat Satellite 6.8
• candlepin not working on Red Hat Satellite and hammer ping returns 404 on candlepin
• Satellite Unresponsive when Candlepin Filesystem Hits Mask Disk Usage, Artemis Queue Blocked after upgrade to Red Hat Satellite 6
• [Satellite 6] Candlepin service is down after an upgrade to Satellite 6.9
• Candlepin log files are not rotated and filling up the file system in Red Hat Satellite 6.
• Satellite 6: candlepin and candlepin_auth fail with response "404 Resource Not Found" and "Katello::Resources::Candlepin::CandlepinPing: 404 Resource Not Found" (GC overhead limit exceeded)
• Error with STOMP client causing 'candlepin_events' to enter a failed state
• Candlepin_events FAIL, not running and wont restart after upgrading Red Hat Satellite 6

How To

• Satellite 6 - How to resolve the error Katello::Resources::Candlepin::CandlepinPing: 404 Resource Not Found?
• [Satellite6] How to configure candlepin to accept GET requests from command line?

Q & A

• What are the function of Candlepin tables?
• Is it possible to change Candlepin self-signed certificates on Satellite 6?