# Unresolved adddress exception **URL:** \ **Category:** Elasticsearch\ **Created:** [June 23, 2011, 2:00am UTC](https://discuss.elastic.co/t/unresolved-adddress-exception/4687 "2011-06-23T02:00:19Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Karl\_Baum](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/karl_baum/32/3186_2.png) [@Karl\_Baum](https://discuss.elastic.co/u/Karl_Baum)\ **Post date:** [June 23, 2011, 2:00am UTC](https://discuss.elastic.co/t/unresolved-adddress-exception/4687/1 "2011-06-23T02:00:19Z")
We are using zen discovery within ec2. I tried to restart one of the instances and I ended up with the exceptions below. The instance throws a 500 whenever i execute any command against it. All of the other instances are functioning properly. Is this because it cannot connect to just one peer instance? Thx. ava.lang.String] [18:56:56,989][TRACE][jmx] [Quentin Quire] Attribute TcpKeepAlive[r=true,w=false,is=false,type=jav a.lang.Boolean][18:56:56,989][TRACE][jmx] [Quentin Quire] Attribute PublishHost[r=true,w=false,is=false,type=java .lang.String][18:56:56,989][TRACE][jmx] [Quentin Quire] Attribute TcpSendBufferSize[r=true,w=false,is=false,typ e=java.lang.String] [18:56:56,989][TRACE][jmx] [Quentin Quire] Attribute BindHost[r=true,w=false,is=false,type=java.la ng.String] [18:56:57,040][DEBUG][index.shard.recovery] [Quentin Quire] using concurrent\_streams [5], file\_chunk\_size [100kb], translog\_size [100kb], translog\_ops [1000], and compress [true] [18:56:57,041][DEBUG][indices.memory] [Quentin Quire] using index\_buffer\_size [99.5mb], with min\_shard\_index\_ buffer\_size [4mb], max\_shard\_index\_buffer\_size [512mb], shard\_inactive\_time [30m] [18:56:57,143][DEBUG][indices.cache.filter] [Quentin Quire] using [node] filter cache with size [199.1mb] [18:56:57,146][INFO][node] [Quentin Quire] {elasticsearch/0.16.2}[17047]: initialized [18:56:57,147][INFO][node] [Quentin Quire] {elasticsearch/0.16.2}[17047]: starting ... [18:56:57,175][DEBUG][netty.channel.socket.nio.NioProviderMetadata] Using the autodetected NIO constraint level: 0 [18:56:57,304][DEBUG][transport.netty] [Quentin Quire] Bound to address [/0.0.0.0:9300] [18:56:57,306][INFO][transport] [Quentin Quire] bound\_address {inet[/0.0.0.0:9300]}, publish\_address {i net[/10.110.34.26:9300]} [18:56:57,333][TRACE][discovery] [Quentin Quire] waiting for 30s for the initial state to be set by the discovery [18:56:57,397][DEBUG][transport.netty] [Quentin Quire] Connected to node [[Quentin Quire][AxXecX8PTbaMEJZs5RZX4g][inet[/10.110.34.26:9300]]] [18:56:57,399][TRACE][discovery.zen.ping.unicast] [Quentin Quire] [1] connecting to [Quentin Quire][AxXecX8PTbaMEJZs5RZX4g][inet[/10.110.34.26:9300]], disconnect[false] [18:56:57,423][WARN][transport.netty] [Quentin Quire] Exception caught on netty layer [[id: 0x322b2057]] java.nio.channels.UnresolvedAddressException at sun.nio.ch.Net.checkAddress(Net.java:30) at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:487) at org.elasticsearch.common.netty.channel.socket.nio.NioClientSocketPipelineSink.connect(NioClientSocketPipeline Sink.java:140) at org.elasticsearch.common.netty.channel.socket.nio.NioClientSocketPipelineSink.eventSunk(NioClientSocketPipeli neSink.java:103) at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendDownstream(DefaultChannelPipeline.java:555) at org.elasticsearch.common.netty.channel.Channels.connect(Channels.java:541) at org.elasticsearch.common.netty.channel.AbstractChannel.connect(AbstractChannel.java:218) at org.elasticsearch.common.netty.bootstrap.ClientBootstrap.connect(ClientBootstrap.java:227) at org.elasticsearch.common.netty.bootstrap.ClientBootstrap.connect(ClientBootstrap.java:188) at org.elasticsearch.transport.netty.NettyTransport.connectToChannels(NettyTransport.java:501) at org.elasticsearch.transport.netty.NettyTransport.connectToNode(NettyTransport.java:475) at org.elasticsearch.transport.TransportService.connectToNode(TransportService.java:126) at org.elasticsearch.discovery.zen.ping.unicast.UnicastZenPing$3.run(UnicastZenPing.java:198) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619) [18:56:57,424][WARN][transport.netty] [Quentin Quire] Exception caught on netty layer [[id: 0x3c4178d0]] java.nio.channels.UnresolvedAddressException at sun.nio.ch.Net.checkAddress(Net.java:30) ---
**Author:** ![Karl\_Baum](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/karl_baum/32/3186_2.png) [@Karl\_Baum](https://discuss.elastic.co/u/Karl_Baum)\ **Post date:** [June 23, 2011, 11:51am UTC](https://discuss.elastic.co/t/unresolved-adddress-exception/4687/2 "2011-06-23T11:51:49Z")
I found the problem. I had the host:port of the current elasticsearch instance within the config. Another words, the loopback to self was failing. I removed that and things seem to work. thx On Jun 22, 2011, at 10:00 PM, Karl Baum wrote: > We are using zen discovery within ec2. I tried to restart one of the instances and I ended up with the exceptions below. The instance throws a 500 whenever i execute any command against it. All of the other instances are functioning properly. Is this because it cannot connect to just one peer instance? > > Thx. > > ava.lang.String] > [18:56:56,989][TRACE][jmx] [Quentin Quire] Attribute TcpKeepAlive[r=true,w=false,is=false,type=jav > a.lang.Boolean][18:56:56,989][TRACE][jmx] [Quentin Quire] Attribute PublishHost[r=true,w=false,is=false,type=java > .lang.String][18:56:56,989][TRACE][jmx] [Quentin Quire] Attribute TcpSendBufferSize[r=true,w=false,is=false,typ > e=java.lang.String] > [18:56:56,989][TRACE][jmx] [Quentin Quire] Attribute BindHost[r=true,w=false,is=false,type=java.la > ng.String] > [18:56:57,040][DEBUG][index.shard.recovery] [Quentin Quire] using concurrent\_streams [5], file\_chunk\_size [100kb], > translog\_size [100kb], translog\_ops [1000], and compress [true] > [18:56:57,041][DEBUG][indices.memory] [Quentin Quire] using index\_buffer\_size [99.5mb], with min\_shard\_index\_ > buffer\_size [4mb], max\_shard\_index\_buffer\_size [512mb], shard\_inactive\_time [30m] > [18:56:57,143][DEBUG][indices.cache.filter] [Quentin Quire] using [node] filter cache with size [199.1mb] > [18:56:57,146][INFO][node] [Quentin Quire] {elasticsearch/0.16.2}[17047]: initialized > [18:56:57,147][INFO][node] [Quentin Quire] {elasticsearch/0.16.2}[17047]: starting ... > [18:56:57,175][DEBUG][netty.channel.socket.nio.NioProviderMetadata] Using the autodetected NIO constraint level: 0 > [18:56:57,304][DEBUG][transport.netty] [Quentin Quire] Bound to address [/0.0.0.0:9300] > [18:56:57,306][INFO][transport] [Quentin Quire] bound\_address {inet[/0.0.0.0:9300]}, publish\_address {i > net[/10.110.34.26:9300]} > [18:56:57,333][TRACE][discovery] [Quentin Quire] waiting for 30s for the initial state to be set by the > discovery > [18:56:57,397][DEBUG][transport.netty] [Quentin Quire] Connected to node [[Quentin Quire][AxXecX8PTbaMEJZs5RZX4g][inet[/10.110.34.26:9300]]] > [18:56:57,399][TRACE][discovery.zen.ping.unicast] [Quentin Quire] [1] connecting to [Quentin Quire][AxXecX8PTbaMEJZs5RZX4g][inet[/10.110.34.26:9300]], disconnect[false] > [18:56:57,423][WARN][transport.netty] [Quentin Quire] Exception caught on netty layer [[id: 0x322b2057]] > java.nio.channels.UnresolvedAddressException > at sun.nio.ch.Net.checkAddress(Net.java:30) > at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:487) > at org.elasticsearch.common.netty.channel.socket.nio.NioClientSocketPipelineSink.connect(NioClientSocketPipeline > Sink.java:140) > at org.elasticsearch.common.netty.channel.socket.nio.NioClientSocketPipelineSink.eventSunk(NioClientSocketPipeli > neSink.java:103) > at org.elasticsearch.common.netty.channel.DefaultChannelPipeline.sendDownstream(DefaultChannelPipeline.java:555) > at org.elasticsearch.common.netty.channel.Channels.connect(Channels.java:541) > at org.elasticsearch.common.netty.channel.AbstractChannel.connect(AbstractChannel.java:218) > at org.elasticsearch.common.netty.bootstrap.ClientBootstrap.connect(ClientBootstrap.java:227) > at org.elasticsearch.common.netty.bootstrap.ClientBootstrap.connect(ClientBootstrap.java:188) > at org.elasticsearch.transport.netty.NettyTransport.connectToChannels(NettyTransport.java:501) > at org.elasticsearch.transport.netty.NettyTransport.connectToNode(NettyTransport.java:475) > at org.elasticsearch.transport.TransportService.connectToNode(TransportService.java:126) > at org.elasticsearch.discovery.zen.ping.unicast.UnicastZenPing$3.run(UnicastZenPing.java:198) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) > at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619) > [18:56:57,424][WARN][transport.netty] [Quentin Quire] Exception caught on netty layer [[id: 0x3c4178d0]] > java.nio.channels.UnresolvedAddressException > at sun.nio.ch.Net.checkAddress(Net.java:30) ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 4:02am UTC](https://discuss.elastic.co/t/unresolved-adddress-exception/4687/3 "2017-07-06T04:02:50Z")