Hi, everyone.
I found some warning message in elasticsearch.log. I do not know how to fix it.
FYI
- Installed Elastcisearch 5.5.1
- Installed Search Guard 5.5.1-16
- Stand-alone Elasticsearch
Please suggest me to solve this problem. Thank you in advance.
Error
[2020-02-18T22:59:00,797][WARN ][c.f.s.h.SearchGuardHttpServerTransport] [esnode] caught exception while handling client http traffic, closing connection [id: 0x3b144a12, L:0.0.0.0/0.0.0.0:9200 ! R:/203.209.117.45:51878]
java.lang.NullPointerException: ssl
at io.netty.internal.tcnative.SSL.getHandshakeCount(Native Method) ~[netty-tcnative-openssl-1.0.2l-static-2.0.5.Final-non-fedora-linux-x86_64.jar:2.0.5.Final]
at io.netty.handler.ssl.ReferenceCountedOpenSslEngine.rejectRemoteInitiatedRenegotiation(ReferenceCountedOpenSslEngine.java:969) ~[netty-handler-4.1.11.Final.jar:4.1.11.Final]
at io.netty.handler.ssl.ReferenceCountedOpenSslEngine.unwrap(ReferenceCountedOpenSslEngine.java:932) ~[netty-handler-4.1.11.Final.jar:4.1.11.Final]
at io.netty.handler.ssl.ReferenceCountedOpenSslEngine.unwrap(ReferenceCountedOpenSslEngine.java:978) ~[netty-handler-4.1.11.Final.jar:4.1.11.Final]
at io.netty.handler.ssl.ReferenceCountedOpenSslEngine.unwrap(ReferenceCountedOpenSslEngine.java:1021) ~[netty-handler-4.1.11.Final.jar:4.1.11.Final]
at io.netty.handler.ssl.SslHandler$SslEngineType$1.unwrap(SslHandler.java:205) ~[netty-handler-4.1.11.Final.jar:4.1.11.Final]
at io.netty.handler.ssl.SslHandler.unwrap(SslHandler.java:1156) ~[netty-handler-4.1.11.Final.jar:4.1.11.Final]
at io.netty.handler.ssl.SslHandler.decode(SslHandler.java:1078) ~[netty-handler-4.1.11.Final.jar:4.1.11.Final]
at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:489) ~[netty-codec-4.1.11.Final.jar:4.1.11.Final]
at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:428) ~[netty-codec-4.1.11.Final.jar:4.1.11.Final]
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:265) ~[netty-codec-4.1.11.Final.jar:4.1.11.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [netty-transport-4.1.11.Final.jar:4.1.11.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [netty-transport-4.1.11.Final.jar:4.1.11.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) [netty-transport-4.1.11.Final.jar:4.1.11.Final]
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1334) [netty-transport-4.1.11.Final.jar:4.1.11.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [netty-transport-4.1.11.Final.jar:4.1.11.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [netty-transport-4.1.11.Final.jar:4.1.11.Final]
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:926) [netty-transport-4.1.11.Final.jar:4.1.11.Final]
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:134) [netty-transport-4.1.11.Final.jar:4.1.11.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:644) [netty-transport-4.1.11.Final.jar:4.1.11.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKeysPlain(NioEventLoop.java:544) [netty-transport-4.1.11.Final.jar:4.1.11.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:498) [netty-transport-4.1.11.Final.jar:4.1.11.Final]
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:458) [netty-transport-4.1.11.Final.jar:4.1.11.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) [netty-common-4.1.11.Final.jar:4.1.11.Final]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_242]