Automatic switchboard process failure and restart

Our uaa service fluctuated for a minute due to JDBC connection error We could link the downtime to mysql proxy's switchboard restart. The downtime happened at the same time the process had restarted. Based on the logs can you tell us as to what could be the reason for the failure-restart as it happened twice in 10 days

details about your deployment 3 mysql nodes and 2 proxy nodes Release version CF/287, mysql version - cf-mysql/32

{"timestamp":"1552556151.317238569","source":"/var/vcap/packages/switchboard/bin/switchboard","message":"/var/vcap/packages/switchboard/bin/switchboard.lock.lost-lock","log_level":2,"data":{"error":"Unexpected response code: 500","key":"v1/locks/mysql_lock","session":"1","value":""}} {"timestamp":"1552556151.317294359","source":"/var/vcap/packages/switchboard/bin/switchboard","message":"/var/vcap/packages/switchboard/bin/switchboard.lock.done","log_level":1,"data":{"key":"v1/locks/mysql_lock","session":"1","value":""}} {"timestamp":"1552556151.317338943","source":"/var/vcap/packages/switchboard/bin/switchboard","message":"/var/vcap/packages/switchboard/bin/switchboard.registration-runner.poll-until-signaled.deregistering-service","log_level":1,"data":{"service":"mysql","session":"2.1","update-interval":"1.5s"}} {"timestamp":"1552556152.952075720","source":"/var/vcap/packages/switchboard/bin/switchboard","message":"/var/vcap/packages/switchboard/bin/switchboard.registration-runner.poll-until-signaled.finished","log_level":1,"data":{"service":"mysql","session":"2.1","update-interval":"1.5s"}} {"timestamp":"1552556152.952127218","source":"/var/vcap/packages/switchboard/bin/switchboard","message":"/var/vcap/packages/switchboard/bin/switchboard.registration-runner.finished","log_level":1,"data":{"service":"mysql","session":"2"}} {"timestamp":"1552556152.952205896","source":"/var/vcap/packages/switchboard/bin/switchboard","message":"/var/vcap/packages/switchboard/bin/switchboard.Received signal","log_level":1,"data":{"signal":2}} {"timestamp":"1552556152.952279568","source":"/var/vcap/packages/switchboard/bin/switchboard","message":"/var/vcap/packages/switchboard/bin/switchboard.Received signal","log_level":1,"data":{"signal":2}} {"timestamp":"1552556152.952310562","source":"/var/vcap/packages/switchboard/bin/switchboard","message":"/var/vcap/packages/switchboard/bin/switchboard.Proxy runner has exited","log_level":1,"data":{}} {"timestamp":"1552556152.952507496","source":"/var/vcap/packages/switchboard/bin/switchboard","message":"/var/vcap/packages/switchboard/bin/switchboard.Switchboard exited unexpectedly","log_level":3,"data":{"error":"Exit trace for group:\nlock exited with error: lock lost\nregistration exited with nil\nhealth exited with nil\nmonitor exited with nil\napi exited with nil\nbridge exited with nil\n","proxyConfig":{"Port":3306,"Backends":[{"Host":"10.3.5.19","Port":3306,"StatusPort":9200,"StatusEndpoint":"galera_status","Name":"backend-0"},{"Host":"10.3.6.19","Port":3306,"StatusPort":9200,"StatusEndpoint":"galera_status","Name":"backend-1"},{"Host":"10.3.7.19","Port":3306,"StatusPort":9200,"StatusEndpoint":"galera_status","Name":"backend-2"}],"HealthcheckTimeoutMillis":5000},"trace":"goroutine 1 [running]:\ngithub.com/cloudfoundry-incubator/switchboard/vendor/code.cloudfoundry.org/lager.(*logger).Fatal(0xc420115da0, 0x8bf522, 0x1f, 0xac1ce0, 0xc420585dc0, 0xc42049a858, 0x1, 0x1)\n\t/var/vcap/packages/switchboard/src/github.com/cloudfoundry-incubator/switchboard/vendor/code.cloudfoundry.org/lager/logger.go:131 +0xc7\nmain.main()\n\t/var/vcap/packages/switchboard/src/github.com/cloudfoundry-incubator/switchboard/main.go:151 +0xd13\n"}} panic: Exit trace for group: lock exited with error: lock lost registration exited with nil health exited with nil monitor exited with nil api exited with nil bridge exited with nil

Please help out to solve this issue, we are facing recently many times. Thanks in Advance .. :) :) :)

cloudfoundry / switchboard

Automatic switchboard process failure and restart #15