Hi All,
This is the log for the case.
The node 10.1.4.196 is removed at 14:08 due to machine reboot, the client keeps
trying to connect to the elasticsearch cluster but fails.
Master Node :
[2014-03-08 14:08:26,531][INFO ][cluster.service ] [10.1.4.197:9202]
removed {[10.1.4.196:9202][_sJrum34QWGqEkv8CvAtow][inet[/10.1.4.196:9302]],},
reason:
zen-disco-node_failed([10.1.4.196:9202][_sJrum34QWGqEkv8CvAtow][inet[/10.1.4.196:9302]]),
reason failed to ping, tried [3] times, each with maximum [30s] timeout
Client :
2014-03-08 14:15:36,184 WARN org.elasticsearch.transport.netty - [Bulldozer]
exception caught on transport layer [[id: 0x50dc218f]], closing connection
java.net.NoRouteToHostException: No route to host
(The cluster health at this moment is Yellow and there is no unassigned shard.)
The node is back at 14:25, the client can successfully connected to the cluster
again.
Client :
2014-03-08 14:25:20,597 WARN org.elasticsearch.transport.netty - [Bulldozer]
exception caught on transport layer [[id: 0xf24d85d7]], closing connection
java.net.NoRouteToHostException: No route to host
Master Node :
[2014-03-08 14:25:57,984][INFO ][cluster.service ] [10.1.4.197:9202]
added {[10.1.4.196:9202][rFZ7k7XSSY231EgPoDfmFw][inet[/10.1.4.196:9302]],},
reason: zen-disco-receive(join from
node[[10.1.4.196:9202][rFZ7k7XSSY231EgPoDfmFw][inet[/10.1.4.196:9302]]])
(The cluster health at this moment is Green.)
In the above case, the client should be able to connect to the cluster even a
node is removed from the cluster.
For the client, the connection is created as followings :
Settings settings = ImmutableSettings.settingsBuilder()
.put("cluster.name", "clustername")
.put("client.transport.sniff", true)
.build();
TransportClient client = new TransportClient(settings);
client.addTransportAddress(new InetSocketTransportAddress(
"10.1.4.195" /* hostname */, 9300 /* port */));
client.addTransportAddress(new InetSocketTransportAddress(
"10.1.4.196" /* hostname */, 9300 /* port */));
client.addTransportAddress(new InetSocketTransportAddress(
"10.1.4.197" /* hostname */, 9300 /* port */));
The master node is 10.1.4.197 while the node being removed is 10.1.4.196.
For the cluster setting, all setting is using the default except the the
discovery.zen.minimum_master_nodes
which is set to 3.
Is there any problem for the above setting which cause this issue?
Thanks.
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