Satellite 6: A backend service [ Candlepin ] is unreachable

Solution Verified - Updated -


  • Candlepin service fails randomly on the Satellite server
# foreman-maintain service status
/ displaying tomcat                                                             
* tomcat.service - Apache Tomcat Web Application Container
   Loaded: loaded (/usr/lib/systemd/system/tomcat.service; enabled; vendor preset: disabled)
   Active: failed (Result: signal) since Mon 2022-05-23 04:04:43 CDT; 5h 17min ago
  Process: 111183 ExecStart=/usr/libexec/tomcat/server start (code=killed, signal=KILL)
 Main PID: 111183 (code=killed, signal=KILL)

May 17 04:01:23 server[111183]: WARNING: Method [public void org.candlepin.model.EntitlementCertificateCurator.delete(org.candlepin.model.Persisted)] is synthetic and is being intercepted by []. This could indicate a bug.  The method may be intercepted twice, or may not be intercepted at all.
May 17 04:01:42 server[111183]: May 17, 2022 4:01:42 AM org.apache.catalina.startup.HostConfig deployDirectory
May 17 04:01:42 server[111183]: INFO: Deployment of web application directory /var/lib/tomcat/webapps/candlepin has finished in 27,059 ms
May 17 04:01:42 server[111183]: May 17, 2022 4:01:42 AM org.apache.coyote.AbstractProtocol start
May 17 04:01:42 server[111183]: INFO: Starting ProtocolHandler ["http-bio-"]
May 17 04:01:42 server[111183]: May 17, 2022 4:01:42 AM org.apache.catalina.startup.Catalina start
May 17 04:01:42 server[111183]: INFO: Server startup in 27105 ms
May 23 04:04:43 systemd[1]: tomcat.service: main process exited, code=killed, status=9/KILL
May 23 04:04:43 systemd[1]: Unit tomcat.service entered failed state.
May 23 04:04:43 systemd[1]: tomcat.service failed.
/ All services displayed                                              [FAIL]    
Some services are not running (tomcat)
Scenario [Status Services] failed.


  • Red Hat Satellite 6.9
  • Red Hat Satellite 6.10

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