elasticsearch 6.3 两个进程运行在两台机子上，有一台一直报错，failed to connect master

elasticsearch 6.3 两个进程运行在两台机子上，有一台一直报错，failed to connect master
[2018-06-21T17:35:25,745][WARN ][o.e.d.z.ZenDiscovery ] [node-2] failed to connect to master [{node-1}{2NatnUW7TACr5yWDxpGUMQ}{XUw0TyukQKmks9XQLRxucw}{172.28.16.100}{172.28.16.100:9300}{ml.machine_memory=8254550016, ml.max_open_jobs=20, xpack.installed=true, ml.enabled=true}], retrying...
org.elasticsearch.transport.ConnectTransportException: [node-1][172.28.16.100:9300] connect_exception
at org.elasticsearch.transport.TcpChannel.awaitConnected(TcpChannel.java:165) ~[elasticsearch-6.3.0.jar:6.3.0]
at org.elasticsearch.transport.TcpTransport.openConnection(TcpTransport.java:631) ~[elasticsearch-6.3.0.jar:6.3.0]
at org.elasticsearch.transport.TcpTransport.connectToNode(TcpTransport.java:530) ~[elasticsearch-6.3.0.jar:6.3.0]
at org.elasticsearch.transport.TransportService.connectToNode(TransportService.java:331) ~[elasticsearch-6.3.0.jar:6.3.0]
at org.elasticsearch.transport.TransportService.connectToNode(TransportService.java:318) ~[elasticsearch-6.3.0.jar:6.3.0]
at org.elasticsearch.discovery.zen.ZenDiscovery.joinElectedMaster(ZenDiscovery.java:509) [elasticsearch-6.3.0.jar:6.3.0]
at org.elasticsearch.discovery.zen.ZenDiscovery.innerJoinCluster(ZenDiscovery.java:477) [elasticsearch-6.3.0.jar:6.3.0]
at org.elasticsearch.discovery.zen.ZenDiscovery.access$2500(ZenDiscovery.java:90) [elasticsearch-6.3.0.jar:6.3.0]
at org.elasticsearch.discovery.zen.ZenDiscovery$JoinThreadControl$1.run(ZenDiscovery.java:1247) [elasticsearch-6.3.0.jar:6.3.0]
at org.elasticsearch.common.util.concurrent.ThreadContext$ContextPreservingRunnable.run(ThreadContext.java:625) [elasticsearch-6.3.0.jar:6.3.0]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_151]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_151]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_151]
Caused by: io.netty.channel.AbstractChannel$AnnotatedSocketException: Connection reset by peer: 172.28.16.100/172.28.16.100:9300
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) ~[?:?]
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717) ~[?:?]
at io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:323) ~[?:?]
at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:340) ~[?:?]
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:633) ~[?:?]
at io.netty.channel.nio.NioEventLoop.processSelectedKeysPlain(NioEventLoop.java:545) ~[?:?]
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:499) ~[?:?]
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:459) ~[?:?]
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) ~[?:?]
... 1 more
Caused by: java.net.SocketException: Connection reset by peer
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method) ~[?:?]
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717) ~[?:?]
at io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:323) ~[?:?]
at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:340) ~[?:?]
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:633) ~[?:?]
at io.netty.channel.nio.NioEventLoop.processSelectedKeysPlain(NioEventLoop.java:545) ~[?:?]
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:499) ~[?:?]
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:459) ~[?:?]
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) ~[?:?]
... 1 more

配置已经改过N次了，两台始终有一台报这个错
cluster.name: cluster1
node.name: node-2
path.data: /home/chiwei/es/es_data
path.logs: /home/chiwei/es/es_log
network.host: 172.28.16.105
bootstrap.system_call_filter: false
discovery.zen.ping.unicast.hosts: ["172.28.16.100", "172.28.16.105"]