Curl: (7) failed to connect

Elastic Stack Elasticsearch
1

Hello,

I have an application that requires ElasticSearch as one of its components to work with the application. After successfully installing ElasticSearch, my application wants me to run the CURL -XGET command from another server. When I run the command from another server I get curl: (7) Failed connect to "ipaddressfromESserver":9200 Connection refused. I also get the same error message on the server that has ES installed. ElasticSearch 2.4 is hosted on Red Hat 7.2.

What are the potential reasons why I am experiencing this issue?

1 Like
2

By default Elasticsearch only listens to localhost. You may need to set network.host to something else.

Check out https://www.elastic.co/guide/en/elasticsearch/reference/6.2/network.host.html

3

Hello when I type "ipaddressfromESServer" in this forum, I am referring to the ip address of the server. What is consider the localhost? Is the 127.0.0.1 address or you referring to the ip address of the where ES is installed?

4

Hello,

How can I get it to listen on the ip address that I installed ES? I review the link provided but I dont understand what to do next?

5

If you're not familiar with localhost, then check out https://whatismyipaddress.com/localhost

You need to set network.host to something, 0.0.0.0 will bind to all IPs and interfaces on the host, if that is what you want.

6

Thanks for providing the info. I check out localhost earlier. In regards to my issues, I change the network.host to 0.0.0.0. When I enter the following I still receive an error message: [root@OUSNWA2H elasticsearch]# curl -XGET OUSNWA2H:9200
curl: (7) Failed connect to OUSNWA2H:9200; Connection refused
[root@OUSNWA2H elasticsearch]#

How can I get the curl command to use the servername provided. How can I also used the same command with the servername in the syntax from another server?

7

What do the logs of Elasticsearch show?

8

Which log do you want me to provide?

9

@warkolm asked for elasticsearch logs.

10

Hello,

What location can I find the elasticsearch logs? I installed the application using rpm.

Thanks

11

I think I found it. Here is the log:

[root@OUSNWA2H elasticsearch]# vi elasticsearch.log.2018-02-15
[2018-02-15 11:53:37,096][INFO ][node ] [Watcher] stopping ...
[2018-02-15 11:53:37,115][INFO ][node ] [Watcher] stopped
[2018-02-15 11:53:37,115][INFO ][node ] [Watcher] closing ...
[2018-02-15 11:53:37,122][INFO ][node ] [Watcher] closed
[2018-02-15 11:53:38,033][INFO ][node ] [Jawynn Dueck the Iron Christian of Faith] version[2.4.0], pid[29223], build[ce9f0c7/2016-08-29T09:14:17Z]
[2018-02-15 11:53:38,034][INFO ][node ] [Jawynn Dueck the Iron Christian of Faith] initializing ...
[2018-02-15 11:53:38,673][INFO ][plugins ] [Jawynn Dueck the Iron Christian of Faith] modules [reindex, lang-expression, lang-groovy], plugins [], sites []
[2018-02-15 11:53:38,701][INFO ][env ] [Jawynn Dueck the Iron Christian of Faith] using [1] data paths, mounts [[/var (/dev/mapper/rootvg-var)]], net usable_space [5.6gb], net total_space [6.4gb], spins? [possibly], types [xfs]
[2018-02-15 11:53:38,701][INFO ][env ] [Jawynn Dueck the Iron Christian of Faith] heap size [990.7mb], compressed ordinary object pointers [true]
[2018-02-15 11:53:40,668][INFO ][node ] [Jawynn Dueck the Iron Christian of Faith] initialized
[2018-02-15 11:53:40,668][INFO ][node ] [Jawynn Dueck the Iron Christian of Faith] starting ...
[2018-02-15 11:53:40,741][INFO ][transport ] [Jawynn Dueck the Iron Christian of Faith] publish_address {127.0.0.1:9300}, bound_addresses {[::1]:9300}, {127.0.0.1:9300}
[2018-02-15 11:53:40,748][INFO ][discovery ] [Jawynn Dueck the Iron Christian of Faith] elasticsearch/bMO39iuVQyaFHsxXTnxquA
[2018-02-15 11:53:43,803][INFO ][cluster.service ] [Jawynn Dueck the Iron Christian of Faith] new_master {Jawynn Dueck the Iron Christian of Faith}{bMO39iuVQyaFHsxXTnxquA}{127.0.0.1}{127.0.0.1:9300}, reason: zen-disco-join(elected_as_master, [0] joins received)

How do I get to see my node and not random nodes?

12

[root@OUSNWA2H elasticsearch]# vi elasticsearch.log.2018-02-15
[2018-02-15 21:05:59,753][INFO ][node ] [Power Broker] stopped
[2018-02-15 21:05:59,753][INFO ][node ] [Power Broker] closing ...
[2018-02-15 21:05:59,758][INFO ][node ] [Power Broker] closed
[2018-02-15 21:06:00,530][INFO ][node ] [Professor X] version[2.4.0], pid[19297], build[ce9f0c7/2016-08-29T09:14:17Z]
[2018-02-15 21:06:00,531][INFO ][node ] [Professor X] initializing ...
[2018-02-15 21:06:01,065][INFO ][plugins ] [Professor X] modules [reindex, lang-expression, lang-groovy], plugins [], sites []
[2018-02-15 21:06:01,087][INFO ][env ] [Professor X] using [1] data paths, mounts [[/var (/dev/mapper/rootvg-var)]], net usable_space [5.6gb], net total_space [6.4gb], spins? [possibly], types [xfs]
[2018-02-15 21:06:01,087][INFO ][env ] [Professor X] heap size [990.7mb], compressed ordinary object pointers [true]
[2018-02-15 21:06:02,710][INFO ][node ] [Professor X] initialized
[2018-02-15 21:06:02,710][INFO ][node ] [Professor X] starting ...
[2018-02-15 21:06:02,781][INFO ][transport ] [Professor X] publish_address {127.0.0.1:9300}, bound_addresses {[::1]:9300}, {127.0.0.1:9300}
[2018-02-15 21:06:02,787][INFO ][discovery ] [Professor X] elasticsearch/ykNJ2ybxQxuppXR8yTvzoA
[2018-02-15 21:06:05,833][INFO ][cluster.service ] [Professor X] new_master {Professor X}{ykNJ2ybxQxuppXR8yTvzoA}{127.0.0.1}{127.0.0.1:9300}, reason: zen-disco-join(elected_as_master, [0] joins received)
[2018-02-15 21:06:05,854][INFO ][http ] [Professor X] publish_address {127.0.0.1:9200}, bound_addresses {[::1]:9200}, {127.0.0.1:9200}
[2018-02-15 21:06:05,854][INFO ][node ] [Professor X] started
[2018-02-15 21:06:05,868][INFO ][gateway ] [Professor X] recovered [0] indices into cluster_state

13

/[root@OUSNWA2H elasticsearch]# vi elasticsearch.log
[2018-02-16 10:19:05,405][WARN ][http.netty ] [Professor X] Caught exception while handling client http traffic, closing connection [id: 0xab749283, /0:0:0:0:0:0:0:1:56482 => /0:0:0:0:0:0:0:1:9200]
java.lang.IllegalArgumentException: empty text
at org.jboss.netty.handler.codec.http.HttpVersion.(HttpVersion.java:89)
at org.jboss.netty.handler.codec.http.HttpVersion.valueOf(HttpVersion.java:62)
at org.jboss.netty.handler.codec.http.HttpRequestDecoder.createMessage(HttpRequestDecoder.java:75)
at org.jboss.netty.handler.codec.http.HttpMessageDecoder.decode(HttpMessageDecoder.java:191)
at org.jboss.netty.handler.codec.http.HttpMessageDecoder.decode(HttpMessageDecoder.java:102)
at org.jboss.netty.handler.codec.replay.ReplayingDecoder.callDecode(ReplayingDecoder.java:500)
at org.jboss.netty.handler.codec.replay.ReplayingDecoder.messageReceived(ReplayingDecoder.java:485)
at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)
at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)
at org.jboss.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)
at org.elasticsearch.common.netty.OpenChannelsHandler.handleUpstream(OpenChannelsHandler.java:75)
at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)
at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:559)
at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:268)
at org.jboss.netty.channel.Channels.fireMessageReceived(Channels.java:255)
at org.jboss.netty.channel.socket.nio.NioWorker.read(NioWorker.java:88)
at org.jboss.netty.channel.socket.nio.AbstractNioWorker.process(AbstractNioWorker.java:108)
at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:337)
at org.jboss.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:89)/

Is this what you mean? @dadoonet

14

Please format your code using </> icon as explained in this guide and not the citation button. It will make your post more readable.

Or use markdown style like:

```
CODE
```

Please edit your posts.

Anyway your server is listening here on 127.0.0.1:9200. So the only way to access it is locally with curl 127.0.0.1:9200/.

If you want to be able to access it from another machine, then you need to configure properly what @warkolm told you

15

Thanks....I review what @warkolm mentioned. Can you provide an example?

16

Hello,

I do not understand what you mean by editing my code. I provide the logs not code is there a different method to do so?

Thanks

17

Format your logs if you prefer.

18

What did you do to follow what Mark wrote?

19

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