# Failed to initialize http input channel **URL:** \ **Category:** Logstash\ **Created:** [August 14, 2018, 10:16pm UTC](https://discuss.elastic.co/t/failed-to-initialize-http-input-channel/144416 "2018-08-14T22:16:08Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![meetdave2611997](https://avatars.discourse-cdn.com/v4/letter/m/f07891/32.png) [@meetdave2611997](https://discuss.elastic.co/u/meetdave2611997)\ **Post date:** [August 14, 2018, 10:16pm UTC](https://discuss.elastic.co/t/failed-to-initialize-http-input-channel/144416/1 "2018-08-14T22:16:08Z")
Hi, We keep seeing this error in log files of logstash nodes when we start logstash with http input. ``` [2018-08-14T22:03:50,292][WARN][io.netty.channel.ChannelInitializer] Failed to initialize a channel. Closing: [id: 0x31fa5de6, L:/x.x.x.x:6000 - R:/x.x.x.x:44444] java.lang.NullPointerException: keyCertChainFile at io.netty.util.internal.ObjectUtil.checkNotNull(ObjectUtil.java:31) ~[netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.handler.ssl.OpenSslServerContext.(OpenSslServerContext.java:352) ~[netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.handler.ssl.OpenSslServerContext.(OpenSslServerContext.java:337) ~[netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.handler.ssl.SslContext.newServerContextInternal(SslContext.java:413) ~[netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.handler.ssl.SslContextBuilder.build(SslContextBuilder.java:391) ~[netty-all-4.1.3.Final.jar:4.1.3.Final] at org.logstash.plugins.inputs.http.util.JksSslBuilder.build(JksSslBuilder.java:57) ~[logstash-input-http-3.2.0.jar:?] at org.logstash.plugins.inputs.http.HttpInitializer.initChannel(HttpInitializer.java:34) ~[logstash-input-http-3.2.0.jar:?] at org.logstash.plugins.inputs.http.HttpInitializer.initChannel(HttpInitializer.java:17) ~[logstash-input-http-3.2.0.jar:?] at io.netty.channel.ChannelInitializer.channelRegistered(ChannelInitializer.java:68) ~[netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRegistered(AbstractChannelHandlerContext.java:158) [netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRegistered(AbstractChannelHandlerContext.java:144) [netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.channel.AbstractChannelHandlerContext.fireChannelRegistered(AbstractChannelHandlerContext.java:137) [netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRegistered(DefaultChannelPipeline.java:1307) [netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRegistered(AbstractChannelHandlerContext.java:158) [netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRegistered(AbstractChannelHandlerContext.java:144) [netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.channel.DefaultChannelPipeline.fireChannelRegistered(DefaultChannelPipeline.java:820) [netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.channel.AbstractChannel$AbstractUnsafe.register0(AbstractChannel.java:509) [netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.channel.AbstractChannel$AbstractUnsafe.access$200(AbstractChannel.java:419) [netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.channel.AbstractChannel$AbstractUnsafe$1.run(AbstractChannel.java:478) [netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.util.concurrent.SingleThreadEventExecutor.safeExecute(SingleThreadEventExecutor.java:451) [netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:418) [netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:401) [netty-all-4.1.3.Final.jar:4.1.3.Final] at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:877) [netty-all-4.1.3.Final.jar:4.1.3.Final] at java.lang.Thread.run(Thread.java:748) [?:1.8.0_171] ``` This is http input configuration ``` input { http { port => 6000 ssl => true keystore => "/opt/elastic/logstash/ssl/keystore" keystore_password => "password" } } ``` However, this is only happening on two nodes, other nodes work well with the same configuration. We are currently using logstash 5.6. Thanks, Meet ---
**Author:** ![NerdSec](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/nerdsec/32/22056_2.png) [@NerdSec](https://discuss.elastic.co/u/NerdSec)\ **Post date:** [August 15, 2018, 4:47am UTC](https://discuss.elastic.co/t/failed-to-initialize-http-input-channel/144416/2 "2018-08-15T04:47:29Z")
Hi Meet, Could try starting Logstash without the ssl part? Does that give you the same error? Also, are you running Logstash as a systemd service or from a binary? ---
**Author:** ![meetdave2611997](https://avatars.discourse-cdn.com/v4/letter/m/f07891/32.png) [@meetdave2611997](https://discuss.elastic.co/u/meetdave2611997)\ **Post date:** [August 15, 2018, 12:35pm UTC](https://discuss.elastic.co/t/failed-to-initialize-http-input-channel/144416/3 "2018-08-15T12:35:04Z")
Corrected!. There was some problem with our logstash installation script. It was updating logstash-http-input plugin and i guess it created some version mismatch and found out that the above http configuration for ssl is deprecated in updated http-input-plugin. Removing that "update plugin" part worked well. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [September 12, 2018, 12:35pm UTC](https://discuss.elastic.co/t/failed-to-initialize-http-input-channel/144416/4 "2018-09-12T12:35:07Z")
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