Data hub error - No root guardian

[hka201181]

Hi Experts,

I tested the new Data hub WAR "datahub-webapp-6.7.0.30-RC4.war" on my local environment and unfortunately I get the following error:

2020-07-03 14:22:28,025 [INFO] [a.r.a.t.ArteryTcpTransport] Remoting started with transport [Artery tcp]; listening on address [akka://DataHubActorSystem@127.0.0.1:2551] with UID [5686743047181104463] 2020-07-03 14:22:28,052 [INFO] [akka.cluster.Cluster] Cluster Node [akka://DataHubActorSystem@127.0.0.1:2551] - Starting up, Akka version [2.6.5] ... 2020-07-03 14:22:28,123 [INFO] [akka.cluster.Cluster] Cluster Node [akka://DataHubActorSystem@127.0.0.1:2551] - Registered cluster JMX MBean [akka:type=Cluster] 2020-07-03 14:22:28,123 [INFO] [akka.cluster.Cluster] Cluster Node [akka://DataHubActorSystem@127.0.0.1:2551] - Started up successfully 2020-07-03 14:22:28,171 [INFO] [akka.cluster.Cluster] Cluster Node [akka://DataHubActorSystem@127.0.0.1:2551] -No downing-provider-class configured, manual cluster downing required, see https://doc.akka.io/docs/akka/current/typed/cluster.html#downing 2020-07-03 14:22:28,221 [ERROR] [a.c.ClusterActorRefProvider] No root guardian at [akka.tcp://DataHubActorSystem@127.0.0.1:2551] java.lang.IllegalArgumentException: Wrong protocol of [akka.tcp://DataHubActorSystem@127.0.0.1:2551/], expected [akka] at akka.remote.RemoteActorRef.<init>(RemoteActorRefProvider.scala:668) at akka.remote.RemoteActorRefProvider.rootGuardianAt(RemoteActorRefProvider.scala:475) at akka.actor.ActorRefFactory.actorSelection(ActorRefProvider.scala:246) at akka.actor.ActorRefFactory.actorSelection$(ActorRefProvider.scala:240) at akka.actor.ActorCell.actorSelection(ActorCell.scala:410) at akka.cluster.SeedNodeProcess.$anonfun$receiveJoinSeedNode$1(SeedNodeProcess.scala:59) at akka.cluster.SeedNodeProcess.$anonfun$receiveJoinSeedNode$1$adapted(SeedNodeProcess.scala:58) at scala.collection.immutable.Set$Set1.foreach(Set.scala:95) at akka.cluster.SeedNodeProcess.receiveJoinSeedNode(SeedNodeProcess.scala:58) at akka.cluster.JoinSeedNodeProcess$anonfun$receive$2.applyOrElse(SeedNodeProcess.scala:270) at akka.actor.Actor.aroundReceive(Actor.scala:535) at akka.actor.Actor.aroundReceive$(Actor.scala:533) at akka.cluster.SeedNodeProcess.aroundReceive(SeedNodeProcess.scala:18) at akka.actor.ActorCell.receiveMessage(ActorCell.scala:575) at akka.actor.ActorCell.invoke(ActorCell.scala:545) at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:270) at akka.dispatch.Mailbox.run(Mailbox.scala:231) at akka.dispatch.Mailbox.exec(Mailbox.scala:243) at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289) at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056) at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692) at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)

I'm using on my local environment:

- Toncat 8.5

- Java 1.8

Any idea about this error?

Thanks in advance,

Houssem

[d_morelli]

Hi,

did you find a solution for this problem?

We're facing the same issue with version 1811.

Thanks

[d_morelli]

Hi,

in our case to solve the issue we had to create a setenv.sh file in the tomcat bin folder with the following data:

export CATALINA_OPTS="$CATALINA_OPTS -Ddatahub.cluster.seed.hostname=127.0.0.1"
export CATALINA_OPTS="$CATALINA_OPTS -Ddatahub.cluster.node.akka-port=2552"
export CATALINA_OPTS="$CATALINA_OPTS -Ddatahub.cluster.seed.akka-port=2551"
export CATALINA_OPTS="$CATALINA_OPTS -Ddatahub.cluster.node.hostname=127.0.0.1"
export CATALINA_OPTS="$CATALINA_OPTS -Dconfig.resource=datahub_cluster_seed.conf"

Hope it help.

Daniele

[sbsamuell]

Hi Daniele,

This solution worked very well for us too.

Really thanks!