# Akka Cluster connection error

**URL:** <https://discuss.akka.io/t/akka-cluster-connection-error/545>\
**Category:** Akka Libraries\
**Tags:** scala, akka-cluster\
**Created:** [April 1, 2018, 12:34pm UTC](https://discuss.akka.io/t/akka-cluster-connection-error/545 "2018-04-01T12:34:56Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![nurbekm7](https://avatars.discourse-cdn.com/v4/letter/n/76d3ee/32.png) [@nurbekm7](https://discuss.akka.io/u/nurbekm7)\
**Post date:** [April 1, 2018, 12:34pm UTC](https://discuss.akka.io/t/akka-cluster-connection-error/545/1 "2018-04-01T12:34:56Z")

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I have the following error when starting akka cluster in kubernetes, only with akka version \> 2.4.16. Can anybody help me with this pls ?

```auto
[DEBUG] [03/27/2018 16:56:13.362] [New I/O worker #4] [NettyTransport(akka://InvoicesClusterSystem)] Remote connection to [/172.17.0.1:52788] was disconnected because of [id: 0x9426620d, /172.17.0.1:52788 :> /172.17.0.4:2552] DISCONNECTED
[DEBUG] [03/27/2018 16:56:13.363] [InvoicesClusterSystem-akka.remote.default-remote-dispatcher-7] [akka.tcp://InvoicesClusterSystem@invoices-seed-0.invoices-seed:2552/system/transports/akkaprotocolmanager.tcp0/akkaProtocol-tcp%3A%2F%2FInvoicesClusterSystem%40172.17.0.1%3A52788-10] Association between local [tcp://InvoicesClusterSystem@invoices-seed-0.invoices-seed:2552] and remote [tcp://InvoicesClusterSystem@172.17.0.1:52788] was disassociated because the ProtocolStateActor failed: Unknown

```

$ifconfig

docker0: flags=4099 mtu 1500 inet 172.17.0.1 …

$kubectl get po -o wide

NAME READY STATUS RESTARTS AGE IP NODE

invoices-seed-0 1/1 Running 0 19m 172.17.0.4 minikube

invoices-seed-1 1/1 Running 0 19m 172.17.0.5 minikube

kubernetes - v1.9.0

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<div class="post-metadata">

**Author:** ![johanandren](https://sea2.discourse-cdn.com/flex020/user_avatar/discuss.akka.io/johanandren/32/85_2.png) [@johanandren](https://discuss.akka.io/u/johanandren)\
**Post date:** [April 3, 2018, 8:47am UTC](https://discuss.akka.io/t/akka-cluster-connection-error/545/2 "2018-04-03T08:47:49Z")

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Any more hints in the log before that entry? (also, check on both the joining and the existing node)