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https://issues.apache.org/jira/browse/CASSANDRA-14924?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17575182#comment-17575182
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Claude Warren commented on CASSANDRA-14924:
-------------------------------------------
This may be related to the Docker issue:
https://github.com/docker-library/cassandra/issues/169
> Cassandra nodes becomes unreachable to each other
> -------------------------------------------------
>
> Key: CASSANDRA-14924
> URL: https://issues.apache.org/jira/browse/CASSANDRA-14924
> Project: Cassandra
> Issue Type: Bug
> Reporter: ventsislav
> Priority: Urgent
>
> I have 3 nodes of elassandra running in docker containers.
> Containers created like:
> {code:java}
> > Host 10.0.0.1 : docker run --name elassandra-node-1 --net=host -e
> > CASSANDRA_SEEDS="10.0.0.1" -e CASSANDRA_CLUSTER_NAME="BD Storage" -e
> > CASSANDRA_DC="DC1" -e CASSANDRA_RACK="r1" -d
> > strapdata/elassandra:latest{code}
> {code:java}
> > Host 10.0.0.2 : docker run --name elassandra-node-2 --net=host -e
> > CASSANDRA_SEEDS="10.0.0.1,10.0.0.2" -e CASSANDRA_CLUSTER_NAME="BD Storage"
> > -e CASSANDRA_DC="DC1" -e CASSANDRA_RACK="r1" -d
> > strapdata/elassandra:latest{code}
> {code:java}
> > Host 10.0.0.3 : docker run --name elassandra-node-3 --net=host -e
> > CASSANDRA_SEEDS="10.0.0.1,10.0.0.2,10.0.0.3" -e CASSANDRA_CLUSTER_NAME="BD
> > Storage" -e CASSANDRA_DC="DC1" -e CASSANDRA_RACK="r1" -d
> > strapdata/elassandra:latest{code}
> Cluster was working fine for a couple of days since created, elastic,
> cassandra all was perfect.
> Currently however all cassandra nodes became unreachable to each other:
> Nodetool status on all nodes is like
> {code:java}
> > Datacenter: DC1
> > ===============
> > Status=Up/Down
> > |/ State=Normal/Leaving/Joining/Moving
> > – Address Load Tokens Owns (effective) Host ID Rack
> > DN 10.0.0.3 11.95 GiB 8 100.0% 7652f66e-194e-4886-ac10-0fc21ac8afeb r1
> > DN 10.0.0.2 11.92 GiB 8 100.0% b91fa129-1dd0-4cf8-be96-9c06b23daac6 r1
> > UN 10.0.0.1 11.9 GiB 8 100.0% 5c1afcff-b0aa-4985-a3cc-7f932056c08f r1{code}
> Where the UN is the current host 10.0.0.1
> Same on all other nodes.
> Nodetool describecluster on 10.0.0.1 is like
> {code:java}
> > Cluster Information:
> > Name: BD Storage
> > Snitch: org.apache.cassandra.locator.GossipingPropertyFileSnitch
> > DynamicEndPointSnitch: enabled
> > Partitioner: org.apache.cassandra.dht.Murmur3Partitioner
> > Schema versions:
> > 24fa5e55-3935-3c0e-9808-99ce502fe98d: [10.0.0.1]
> >
> > UNREACHABLE: [10.0.0.2,10.0.0.3]{code}
> When attached to the first node its only repeating these infos:
> {code:java}
> > 2018-12-09 07:47:32,927 WARN [OptionalTasks:1]
> > org.apache.cassandra.auth.CassandraRoleManager.setupDefaultRole(CassandraRoleManager.java:361)
> > CassandraRoleManager skipped default role setup: some nodes were not ready
> > 2018-12-09 07:47:32,927 INFO [OptionalTasks:1]
> org.apache.cassandra.auth.CassandraRoleManager$4.run(CassandraRoleManager.java:400)
> Setup task failed with error, rescheduling
> > 2018-12-09 07:47:32,980 INFO [HANDSHAKE-/10.0.0.2]
> org.apache.cassandra.net.OutboundTcpConnection.lambda$handshakeVersion$1(OutboundTcpConnection.java:561)
> Handshaking version with /10.0.0.2
> > 2018-12-09 07:47:32,980 INFO [HANDSHAKE-/10.0.0.3]
> org.apache.cassandra.net.OutboundTcpConnection.lambda$handshakeVersion$1(OutboundTcpConnection.java:561)
> Handshaking version with /10.0.0.3{code}
> After a while when some node is restarted:
> {code:java}
> > 2018-12-09 07:52:21,972 WARN [MigrationStage:1]
> > org.apache.cassandra.service.MigrationTask.runMayThrow(MigrationTask.java:67)
> > Can't send schema pull request: node /10.0.0.2 is down.{code}
> Tried so far:
> Restarting all containers at the same time
> Restarting all containers one after another
> Restarting cassandra in all containers like : service cassandra restart
> Nodetool disablegossip then enable it
> Nodetool repair : Repair command #1 failed with error Endpoint not alive:
> /10.0.0.2
> Seems that all node schemas are different, but I still dont understand why
> they are marked as down to each other.
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