regiskuckaertz commented on issue #1854:
URL: https://github.com/apache/pekko/issues/1854#issuecomment-2905132800
ok, it's starting up 🎉 I'm getting an exception when an akka node is trying
to join, I have a feeling I made a mistake somewhere so I'm following the
thread. However just in case it rings a bell, here it is:
```
2025-05-23 16:41:24,064 INFO [PTS-pekko.actor.default-dispatcher-22]
org.apache.pekko.cluster.Cluster Cluster(pekko://PTS) - Cluster Node
[akka.ssl.tcp://PTS@***:1600] - Received InitJoinAck message from
[Actor[akka.ssl.tcp://PTS@***:1601/system/cluster/core/daemon#-1262355348]] to
[akka.ssl.tcp://PTS@***:1600]
2025-05-23 16:41:24,064 ERROR [PTS-pekko.actor.default-dispatcher-22]
o.a.pekko.actor.OneForOneStrategy
pekko://PTS/system/cluster/core/daemon/firstSeedNodeProcess-1 - String: 1: No
configuration setting found for key 'pekko'
com.typesafe.config.ConfigException$Missing: String: 1: No configuration
setting found for key 'pekko'
at
com.typesafe.config.impl.SimpleConfig.findKeyOrNull(SimpleConfig.java:157)
at com.typesafe.config.impl.SimpleConfig.findKey(SimpleConfig.java:150)
at
com.typesafe.config.impl.SimpleConfig.findOrNull(SimpleConfig.java:177)
at com.typesafe.config.impl.SimpleConfig.find(SimpleConfig.java:189)
at com.typesafe.config.impl.SimpleConfig.find(SimpleConfig.java:194)
at
com.typesafe.config.impl.SimpleConfig.getString(SimpleConfig.java:251)
at
org.apache.pekko.cluster.JoinConfigCompatCheckCluster.check(JoinConfigCompatCheckCluster.scala:41)
at
org.apache.pekko.cluster.JoinConfigCompatChecker$$anon$1.$anonfun$check$1(JoinConfigCompatChecker.scala:169)
at scala.collection.IterableOnceOps.foldLeft(IterableOnce.scala:676)
at scala.collection.IterableOnceOps.foldLeft$(IterableOnce.scala:670)
at scala.collection.AbstractIterable.foldLeft(Iterable.scala:933)
at
org.apache.pekko.cluster.JoinConfigCompatChecker$$anon$1.check(JoinConfigCompatChecker.scala:168)
at
org.apache.pekko.cluster.SeedNodeProcess.receiveInitJoinAckCompatibleConfig(SeedNodeProcess.scala:134)
at
org.apache.pekko.cluster.FirstSeedNodeProcess$$anonfun$receive$1.applyOrElse(SeedNodeProcess.scala:230)
at org.apache.pekko.actor.Actor.aroundReceive(Actor.scala:547)
at org.apache.pekko.actor.Actor.aroundReceive$(Actor.scala:545)
at
org.apache.pekko.cluster.SeedNodeProcess.aroundReceive(SeedNodeProcess.scala:28)
at org.apache.pekko.actor.ActorCell.receiveMessage(ActorCell.scala:590)
at org.apache.pekko.actor.ActorCell.invoke(ActorCell.scala:557)
at org.apache.pekko.dispatch.Mailbox.processMailbox(Mailbox.scala:272)
at org.apache.pekko.dispatch.Mailbox.run(Mailbox.scala:233)
at org.apache.pekko.dispatch.Mailbox.exec(Mailbox.scala:245)
at java.base/java.util.concurrent.ForkJoinTask.doExec(Unknown Source)
at
java.base/java.util.concurrent.ForkJoinPool$WorkQueue.topLevelExec(Unknown
Source)
at java.base/java.util.concurrent.ForkJoinPool.scan(Unknown Source)
at java.base/java.util.concurrent.ForkJoinPool.runWorker(Unknown Source)
at java.base/java.util.concurrent.ForkJoinWorkerThread.run(Unknown
Source)
```
Should this check be disabled in a heterogenous cluster?
```
pekko.cluster.configuration-compatibility-check.enforce-on-join = no
```
... or perhaps create a new check that accounts for `akka.*` config?
```
pekko.cluster.configuration-compatibility-check.checkers.pekko-cluster =
"JoinAkkaConfigCompatCheckCluster"
```
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