I'm looking over the various KB articles on this, and I haven't found a good answer to this. I'm running Synchorny and it just keeps restarting. The logs, pasted below, don't seem to tell me much other than it keeps restarting.
I do see attempts to connect to the localhost 127.0.0.1. I suspect that it should be attempting to connect via the reverse-proxy address (confluence.mydomain.net) but I don't see anywhere to configure that.
==> atlassian-synchrony.log <==
2019-05-23 15:53:53,779 DEBUG [238:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] Running QueryDSL sytem...
2019-05-23 15:53:53,870 DEBUG [238:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] {"synchrony":{"message":"synchrony.querydsl.jdbc [info] connection pool test-connection-on-checkin: true idle-connection-test-period: 100 max-idle-time-excess-connections: 100 max-idle-time: 3600","ns":"synchrony.querydsl.jdbc","level":"info"}}
2019-05-23 15:53:53,878 DEBUG [238:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] MLog clients using slf4j logging.
2019-05-23 15:53:53,893 DEBUG [238:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] Initializing c3p0-0.9.5.1 [built 16-June-2015 00:06:36 -0700; debug? true; trace: 10]
2019-05-23 15:53:53,926 DEBUG [238:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] {"synchrony":{"message":"synchrony.event-bus [info] cluster membership transition","transition":{"type":"join","member":{"member-id":"local","host":null,"local?":true}},"ns":"synchrony.event-bus","level":"info"}}
2019-05-23 15:53:54,278 DEBUG [238:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] {"synchrony":{"request":{"remote-addr":"127.0.0.1","uri":"/synchrony/heartbeat","request-method":"get","query-string":null},"response":{"status":200},"ns":"synchrony.middleware.logging","level":"info","message":"synchrony.middleware.logging [info] null"}}
2019-05-23 15:53:54,291 DEBUG [238:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] {"synchrony":{"request":{"remote-addr":"127.0.0.1","uri":"/synchrony/jwt-key","request-method":"get","query-string":null},"response":{"status":200},"ns":"synchrony.middleware.logging","level":"info","message":"synchrony.middleware.logging [info] null"}}
2019-05-23 15:53:56,027 DEBUG [238:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] {"synchrony":{"message":"synchrony.components.watch-pid [warn] PID 53182 has died. Terminating","ns":"synchrony.components.watch-pid","level":"warn"}}
2019-05-23 15:53:59,211 DEBUG [238:StdErrHandler [/usr/local/openjdk8/jre/bin/java]] WARNING: boolean? already refers to: #'clojure.core/boolean? in namespace: medley.core, being replaced by: #'medley.core/boolean?
2019-05-23 15:53:59,314 DEBUG [238:StdErrHandler [/usr/local/openjdk8/jre/bin/java]] WARNING: Inst already refers to: #'clojure.core/Inst in namespace: schema.core, being replaced by: #'schema.core/Inst
2019-05-23 15:54:02,324 DEBUG [239:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] Running QueryDSL sytem...
2019-05-23 15:54:02,420 DEBUG [239:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] {"synchrony":{"message":"synchrony.querydsl.jdbc [info] connection pool test-connection-on-checkin: true idle-connection-test-period: 100 max-idle-time-excess-connections: 100 max-idle-time: 3600","ns":"synchrony.querydsl.jdbc","level":"info"}}
2019-05-23 15:54:02,428 DEBUG [239:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] MLog clients using slf4j logging.
2019-05-23 15:54:02,443 DEBUG [239:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] Initializing c3p0-0.9.5.1 [built 16-June-2015 00:06:36 -0700; debug? true; trace: 10]
2019-05-23 15:54:02,476 DEBUG [239:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] {"synchrony":{"message":"synchrony.event-bus [info] cluster membership transition","transition":{"type":"join","member":{"member-id":"local","host":null,"local?":true}},"ns":"synchrony.event-bus","level":"info"}}
2019-05-23 15:54:04,567 DEBUG [239:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] {"synchrony":{"message":"synchrony.components.watch-pid [warn] PID 53182 has died. Terminating","ns":"synchrony.components.watch-pid","level":"warn"}}
2019-05-23 15:54:07,845 DEBUG [239:StdErrHandler [/usr/local/openjdk8/jre/bin/java]] WARNING: boolean? already refers to: #'clojure.core/boolean? in namespace: medley.core, being replaced by: #'medley.core/boolean?
2019-05-23 15:54:07,947 DEBUG [239:StdErrHandler [/usr/local/openjdk8/jre/bin/java]] WARNING: Inst already refers to: #'clojure.core/Inst in namespace: schema.core, being replaced by: #'schema.core/Inst
2019-05-23 15:54:10,747 DEBUG [238:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] Running QueryDSL sytem...
2019-05-23 15:54:10,820 DEBUG [238:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] {"synchrony":{"message":"synchrony.querydsl.jdbc [info] connection pool test-connection-on-checkin: true idle-connection-test-period: 100 max-idle-time-excess-connections: 100 max-idle-time: 3600","ns":"synchrony.querydsl.jdbc","level":"info"}}
2019-05-23 15:54:10,828 DEBUG [238:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] MLog clients using slf4j logging.
2019-05-23 15:54:10,843 DEBUG [238:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] Initializing c3p0-0.9.5.1 [built 16-June-2015 00:06:36 -0700; debug? true; trace: 10]
2019-05-23 15:54:10,876 DEBUG [238:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] {"synchrony":{"message":"synchrony.event-bus [info] cluster membership transition","transition":{"type":"join","member":{"member-id":"local","host":null,"local?":true}},"ns":"synchrony.event-bus","level":"info"}}
2019-05-23 15:54:11,216 DEBUG [238:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] {"synchrony":{"request":{"remote-addr":"127.0.0.1","uri":"/synchrony/heartbeat","request-method":"get","query-string":null},"response":{"status":200},"ns":"synchrony.middleware.logging","level":"info","message":"synchrony.middleware.logging [info] null"}}
2019-05-23 15:54:11,229 DEBUG [238:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] {"synchrony":{"request":{"remote-addr":"127.0.0.1","uri":"/synchrony/jwt-key","request-method":"get","query-string":null},"response":{"status":200},"ns":"synchrony.middleware.logging","level":"info","message":"synchrony.middleware.logging [info] null"}}
2019-05-23 15:54:12,990 DEBUG [238:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] {"synchrony":{"message":"synchrony.components.watch-pid [warn] PID 53182 has died. Terminating","ns":"synchrony.components.watch-pid","level":"warn"}}
2019-05-23 15:54:16,255 DEBUG [238:StdErrHandler [/usr/local/openjdk8/jre/bin/java]] WARNING: boolean? already refers to: #'clojure.core/boolean? in namespace: medley.core, being replaced by: #'medley.core/boolean?
2019-05-23 15:54:16,360 DEBUG [238:StdErrHandler [/usr/local/openjdk8/jre/bin/java]] WARNING: Inst already refers to: #'clojure.core/Inst in namespace: schema.core, being replaced by: #'schema.core/Inst
2019-05-23 15:54:19,162 DEBUG [239:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] Running QueryDSL sytem...
2019-05-23 15:54:19,235 DEBUG [239:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] {"synchrony":{"message":"synchrony.querydsl.jdbc [info] connection pool test-connection-on-checkin: true idle-connection-test-period: 100 max-idle-time-excess-connections: 100 max-idle-time: 3600","ns":"synchrony.querydsl.jdbc","level":"info"}}
2019-05-23 15:54:19,244 DEBUG [239:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] MLog clients using slf4j logging.
2019-05-23 15:54:19,262 DEBUG [239:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] Initializing c3p0-0.9.5.1 [built 16-June-2015 00:06:36 -0700; debug? true; trace: 10]
2019-05-23 15:54:19,338 DEBUG [239:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] {"synchrony":{"message":"synchrony.event-bus [info] cluster membership transition","transition":{"type":"join","member":{"member-id":"local","host":null,"local?":true}},"ns":"synchrony.event-bus","level":"info"}}
2019-05-23 15:54:19,623 DEBUG [239:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] {"synchrony":{"request":{"remote-addr":"127.0.0.1","uri":"/synchrony/heartbeat","request-method":"get","query-string":null},"response":{"status":200},"ns":"synchrony.middleware.logging","level":"info","message":"synchrony.middleware.logging [info] null"}}
2019-05-23 15:54:19,636 DEBUG [239:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] {"synchrony":{"request":{"remote-addr":"127.0.0.1","uri":"/synchrony/jwt-key","request-method":"get","query-string":null},"response":{"status":200},"ns":"synchrony.middleware.logging","level":"info","message":"synchrony.middleware.logging [info] null"}}
2019-05-23 15:54:21,437 DEBUG [239:StdOutHandler [/usr/local/openjdk8/jre/bin/java]] {"synchrony":{"message":"synchrony.components.watch-pid [warn] PID 53182 has died. Terminating","ns":"synchrony.components.watch-pid","level":"warn"}}