Elasticsearch connectin refused

hitardha · October 24, 2018, 9:41pm

Hi,

I have installed elasticsearch But when i am trying to run curl it is resulting to the error "connection refused" following are the few observations.

If i configure network.host to localhost in elasticsearch.yml it is working fine and netstat -tupln | grep java shows 127.0.0.1:9200 and 127.0.0.1:9300

If i configure http.host to FQDN in elasticsearch.yml curl fails and netstat shows only 127.0.0.1:9300

If I configure network.host to FQDN in elasticsearch.yml curl fails and netstat shows nothing related to elasticsearch

Please help to sort this out. How can i restrict curl avoiding go through external proxy and external firewall ?

Hitardha

warkolm · October 24, 2018, 9:57pm

You need to speak to your network admin about that.

Please show the config you used as well as the logs.

hitardha · October 25, 2018, 3:19am

[root@PHCHBS-ST290005 ~]# cat /etc/elasticsearch/elasticsearch.yml
# ======================== Elasticsearch Configuration =========================
#
# NOTE: Elasticsearch comes with reasonable defaults for most settings.
#       Before you set out to tweak and tune the configuration, make sure you
#       understand what are you trying to accomplish and the consequences.
#
# The primary way of configuring a node is via this file. This template lists
# the most important settings you may want to configure for a production cluster.
#
# Please consult the documentation for further information on configuration options:
# https://www.elastic.co/guide/en/elasticsearch/reference/index.html
#
# ---------------------------------- Cluster -----------------------------------
#
# Use a descriptive name for your cluster:
#
cluster.name: DVNC
#
# ------------------------------------ Node ------------------------------------
#
# Use a descriptive name for the node:
#
node.name: node-1
#
# Add custom attributes to the node:
#
node.attr.rack: r1
#
# ----------------------------------- Paths ------------------------------------
#
# Path to directory where to store the data (separate multiple locations by comma):
#
path.data: /CHBS/data/ELK/es/Data
#
# Path to log files:
#
path.logs: /CHBS/data/ELK/es/Logs
#
# ----------------------------------- Memory -----------------------------------
#
# Lock the memory on startup:
#
#bootstrap.memory_lock: true
#
# Make sure that the heap size is set to about half the memory available
# on the system and that the owner of the process is allowed to use this
# limit.
#
# Elasticsearch performs poorly when the system is swapping the memory.
#
# ---------------------------------- Network -----------------------------------
#
# Set the bind address to a specific IP (IPv4 or IPv6):
#
#network.host: phchbs-sd220166.eu.novartis.net
#network.host: '_team0_'
#network.bind_host: '_team0_'
http.host: phchbs-sd220166.eu.novartis.net
#
# Set a custom port for HTTP:
#
http.port: 9200
#
# For more information, consult the network module documentation.
#
# --------------------------------- Discovery ----------------------------------
#
# Pass an initial list of hosts to perform discovery when new node is started:
# The default list of hosts is ["127.0.0.1", "[::1]"]
#
#discovery.zen.ping.unicast.hosts: ["host1", "host2"]
#
# Prevent the "split brain" by configuring the majority of nodes (total number of master-eligible nodes / 2 + 1):
#
#discovery.zen.minimum_master_nodes:
#
# For more information, consult the zen discovery module documentation.
#
# ---------------------------------- Gateway -----------------------------------
#
# Block initial recovery after a full cluster restart until N nodes are started:
#
#gateway.recover_after_nodes: 3
#
# For more information, consult the gateway module documentation.
#
# ---------------------------------- Various -----------------------------------
#
# Require explicit names when deleting indices:
#
#action.destructive_requires_name: true
[root@PHCHBS-ST290005 ~]#

hitardha · October 25, 2018, 3:20am

[root@PHCHBS-ST290005 ~]# tail -50 /CHBS/data/ELK/es/Logs/DVNC.log
        at io.netty.channel.DefaultChannelPipeline$HeadContext.bind(DefaultChannelPipeline.java:1283) ~[?:?]
        at io.netty.channel.AbstractChannelHandlerContext.invokeBind(AbstractChannelHandlerContext.java:501) ~[?:?]
        at io.netty.channel.AbstractChannelHandlerContext.bind(AbstractChannelHandlerContext.java:486) ~[?:?]
        at io.netty.channel.DefaultChannelPipeline.bind(DefaultChannelPipeline.java:989) ~[?:?]
        at io.netty.channel.AbstractChannel.bind(AbstractChannel.java:254) ~[?:?]
        at io.netty.bootstrap.AbstractBootstrap$2.run(AbstractBootstrap.java:365) ~[?:?]
        at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163) ~[?:?]
        at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:403) ~[?:?]
        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:463) ~[?:?]
        at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) ~[?:?]
        at java.lang.Thread.run(Thread.java:748) ~[?:1.8.0_181]
[2018-10-24T23:36:29,158][WARN ][o.e.b.ElasticsearchUncaughtExceptionHandler] [node-1] uncaught exception in thread [main]
org.elasticsearch.bootstrap.StartupException: BindHttpException[Failed to bind to [9200]]; nested: BindException[Cannot assign requested address];
        at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:140) ~[elasticsearch-6.4.1.jar:6.4.1]
        at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:127) ~[elasticsearch-6.4.1.jar:6.4.1]
        at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) ~[elasticsearch-6.4.1.jar:6.4.1]
        at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:124) ~[elasticsearch-cli-6.4.1.jar:6.4.1]
        at org.elasticsearch.cli.Command.main(Command.java:90) ~[elasticsearch-cli-6.4.1.jar:6.4.1]
        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:93) ~[elasticsearch-6.4.1.jar:6.4.1]
        at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:86) ~[elasticsearch-6.4.1.jar:6.4.1]
Caused by: org.elasticsearch.http.BindHttpException: Failed to bind to [9200]
        at org.elasticsearch.http.netty4.Netty4HttpServerTransport.bindAddress(Netty4HttpServerTransport.java:474) ~[?:?]
        at org.elasticsearch.http.netty4.Netty4HttpServerTransport.createBoundHttpAddress(Netty4HttpServerTransport.java:375) ~[?:?]
        at org.elasticsearch.http.netty4.Netty4HttpServerTransport.doStart(Netty4HttpServerTransport.java:352) ~[?:?]
        at org.elasticsearch.common.component.AbstractLifecycleComponent.start(AbstractLifecycleComponent.java:66) ~[elasticsearch-6.4.1.jar:6.4.1]
        at org.elasticsearch.node.Node.start(Node.java:734) ~[elasticsearch-6.4.1.jar:6.4.1]
        at org.elasticsearch.bootstrap.Bootstrap.start(Bootstrap.java:265) ~[elasticsearch-6.4.1.jar:6.4.1]
        at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:335) ~[elasticsearch-6.4.1.jar:6.4.1]
        at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:136) ~[elasticsearch-6.4.1.jar:6.4.1]
        ... 6 more
Caused by: java.net.BindException: Cannot assign requested address
        at sun.nio.ch.Net.bind0(Native Method) ~[?:?]
        at sun.nio.ch.Net.bind(Net.java:433) ~[?:?]
        at sun.nio.ch.Net.bind(Net.java:425) ~[?:?]
        at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223) ~[?:?]
        at io.netty.channel.socket.nio.NioServerSocketChannel.doBind(NioServerSocketChannel.java:128) ~[?:?]
        at io.netty.channel.AbstractChannel$AbstractUnsafe.bind(AbstractChannel.java:558) ~[?:?]
        at io.netty.channel.DefaultChannelPipeline$HeadContext.bind(DefaultChannelPipeline.java:1283) ~[?:?]
        at io.netty.channel.AbstractChannelHandlerContext.invokeBind(AbstractChannelHandlerContext.java:501) ~[?:?]
        at io.netty.channel.AbstractChannelHandlerContext.bind(AbstractChannelHandlerContext.java:486) ~[?:?]
        at io.netty.channel.DefaultChannelPipeline.bind(DefaultChannelPipeline.java:989) ~[?:?]
        at io.netty.channel.AbstractChannel.bind(AbstractChannel.java:254) ~[?:?]
        at io.netty.bootstrap.AbstractBootstrap$2.run(AbstractBootstrap.java:365) ~[?:?]
        at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163) ~[?:?]
        at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:403) ~[?:?]
        at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:463) ~[?:?]
        at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) ~[?:?]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_181]
[2018-10-24T23:36:29,165][INFO ][o.e.g.GatewayService     ] [node-1] recovered [0] indices into cluster_state
[2018-10-24T23:36:30,129][INFO ][t.b.r.e.SettingsObservableImpl] [CLUSTERWIDE SETTINGS] index settings not found. Will keep on using the local YAML file. Learn more about clusterwide settings at https://readonlyrest.com/pro.html
[root@PHCHBS-ST290005 ~]#

warkolm · October 25, 2018, 4:18am

Please edit your post and use the </> button to format the config and logs. Otherwise use markdown style back ticks.

hitardha · October 25, 2018, 10:38am

Please help me to sort this issue.

Admin_Hack · October 25, 2018, 12:17pm

use sudo ufw allow 9200 if not works then sudo apt-get purge elasticsearch .
[EDITED] Then use yum remove package-name instead of apt-get
SEE here Follow this tut

hitardha · October 25, 2018, 12:26pm

My server environment is RHEL not Ubuntu .. still works ?

Tek_Chand · October 26, 2018, 8:55am

@hitardha, Can you please try to ping your FQDN i.e node-1? Its seems that you can't ping it. So please use IP of your node in elasticseerach.yml file. Then restart the service of elasticserach. Please let me know if you face any issue.

Thanks.

system · November 23, 2018, 8:55am

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