Couldn't connect to elasticsearch remotely

Elastic Stack Elasticsearch
1

Hi All,

I'm new to Elasticsearch. I've installed elasticsearch 6.7.0 on Centos6.9. It is a single cluster node. I can successfully curl it on same machine. curl -XGET "http://xxx.xxx.xx.xx:9200" I get the following result

    {
  "name" : "........",
  "cluster_name" : ".................",
  "cluster_uuid" : "..........",
  "version" : {
    "number" : "6.7.0",
    "build_flavor" : "default",
    "build_type" : "rpm",
    "build_hash" : "......",
    "build_date" : "......",
    "build_snapshot" : false,
    "lucene_version" : "7.7.0",
    "minimum_wire_compatibility_version" : "5.6.0",
    "minimum_index_compatibility_version" : "5.0.0"
  },
  "tagline" : "You Know, for Search"
}

But I couldnt connect to elasticsearch from other system, It says curl(7): Failed to connect to xxx.xxx.xx.xx port 9200 : Timed out. I check the firewall settings, it is open and in my elasticsearch.yml file,

# ---------------------------------- Network -----------------------------------
#
# Set the bind address to a specific IP (IPv4 or IPv6):
#
network.host: 0.0.0.0
http.host: 0.0.0.0
transport.host: localhost
network.bind_host: 0.0.0.0
http.cors.allow-origin: "*"
http.cors.enabled: true
#
# Set a custom port for HTTP:
#
http.port: 9200
transport.tcp.port: 9300

Any help is greatly appreciated. Thanks in advance

2

Can you share elasticsearch starting logs?
Is there any reason you are masking the IP address here? Do you mean that it's a public IP and that you are exposing your elasticsearch cluster on internet?

3

Thank you for your prompt reply

[2019-04-09T14:56:20,286][WARN ][o.e.b.JNANatives         ] [test_mall] unable to install syscall filter:
    java.lang.UnsupportedOperationException: seccomp unavailable: CONFIG_SECCOMP not compiled into kernel, CONFIG_SECCOMP and CONFIG_SECCOMP_FILTER are needed
            at org.elasticsearch.bootstrap.SystemCallFilter.linuxImpl(SystemCallFilter.java:342) ~[elasticsearch-6.7.0.jar:6.7.0]
            at org.elasticsearch.bootstrap.SystemCallFilter.init(SystemCallFilter.java:617) ~[elasticsearch-6.7.0.jar:6.7.0]
            at org.elasticsearch.bootstrap.JNANatives.tryInstallSystemCallFilter(JNANatives.java:260) [elasticsearch-6.7.0.jar:6.7.0]
            at org.elasticsearch.bootstrap.Natives.tryInstallSystemCallFilter(Natives.java:113) [elasticsearch-6.7.0.jar:6.7.0]
            at org.elasticsearch.bootstrap.Bootstrap.initializeNatives(Bootstrap.java:108) [elasticsearch-6.7.0.jar:6.7.0]
            at org.elasticsearch.bootstrap.Bootstrap.setup(Bootstrap.java:170) [elasticsearch-6.7.0.jar:6.7.0]
            at org.elasticsearch.bootstrap.Bootstrap.init(Bootstrap.java:333) [elasticsearch-6.7.0.jar:6.7.0]
            at org.elasticsearch.bootstrap.Elasticsearch.init(Elasticsearch.java:159) [elasticsearch-6.7.0.jar:6.7.0]
            at org.elasticsearch.bootstrap.Elasticsearch.execute(Elasticsearch.java:150) [elasticsearch-6.7.0.jar:6.7.0]
            at org.elasticsearch.cli.EnvironmentAwareCommand.execute(EnvironmentAwareCommand.java:86) [elasticsearch-6.7.0.jar:6.7.0]
            at org.elasticsearch.cli.Command.mainWithoutErrorHandling(Command.java:124) [elasticsearch-cli-6.7.0.jar:6.7.0]
            at org.elasticsearch.cli.Command.main(Command.java:90) [elasticsearch-cli-6.7.0.jar:6.7.0]
            at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:116) [elasticsearch-6.7.0.jar:6.7.0]
            at org.elasticsearch.bootstrap.Elasticsearch.main(Elasticsearch.java:93) [elasticsearch-6.7.0.jar:6.7.0]
    [2019-04-09T14:56:20,614][INFO ][o.e.e.NodeEnvironment    ] [test_mall] using [1] data paths, mounts [[/ (rootfs)]], net usable_space [6gb], net total_space [29.4gb], types [rootfs]
    [2019-04-09T14:56:20,614][INFO ][o.e.e.NodeEnvironment    ] [test_mall] heap size [990.7mb], compressed ordinary object pointers [true]
    [2019-04-09T14:56:20,651][INFO ][o.e.n.Node               ] [test_mall] node name [test_mall], node ID [UREzq21QS9Cx29nz8AwRZQ]
    [2019-04-09T14:56:20,652][INFO ][o.e.n.Node               ] [test_mall] version[6.7.0], pid[255833], build[default/rpm/8453f77/2019-03-21T15:32:29.844721Z], OS[Linux/2.6.32-754.el6.x86_64/amd64], JVM[Oracle Corporation/Java HotSpot(TM) 64-Bit Server VM/1.8.0_131/25.131-b11]
      ..................
    [2019-04-09T14:56:29,162][INFO ][o.e.x.s.a.s.FileRolesStore] [test_mall] parsed [0] roles from file [/etc/elasticsearch/roles.yml]
    [2019-04-09T14:56:30,046][INFO ][o.e.x.m.p.l.CppLogMessageHandler] [test_mall] [controller/255851] [Main.cc@109] controller (64 bit): Version 6.7.0 (Build d74ae2ac01b10d) Copyright (c) 2019 Elasticsearch BV
    [2019-04-09T14:56:30,843][DEBUG][o.e.a.ActionModule       ] [test_mall] Using REST wrapper from plugin org.elasticsearch.xpack.security.Security
    [2019-04-09T14:56:31,200][INFO ][o.e.d.DiscoveryModule    ] [test_mall] using discovery type [zen] and host providers [settings]
    [2019-04-09T14:56:32,457][INFO ][o.e.n.Node               ] [test_mall] initialized
    [2019-04-09T14:56:32,457][INFO ][o.e.n.Node               ] [test_mall] starting ...
    [2019-04-09T14:56:32,659][INFO ][o.e.t.TransportService   ] [test_mall] publish_address {127.0.0.1:9300}, bound_addresses {127.0.0.1:9300}, {[::1]:9300}
    [2019-04-09T14:56:32,742][WARN ][o.e.b.BootstrapChecks    ] [test_mall] max number of threads [1024] for user [elasticsearch] is too low, increase to at least [4096]
    [2019-04-09T14:56:32,742][WARN ][o.e.b.BootstrapChecks    ] [test_mall] system call filters failed to install; check the logs and fix your configuration or disable system call filters at your own risk
    [2019-04-09T14:56:35,827][INFO ][o.e.c.s.MasterService    ] [test_mall] zen-disco-elected-as-master ([0] nodes joined), reason: new_master {test_mall}{UREzq21QS9Cx29nz8AwRZQ}{m4bxiSN8QXalnNNmGZYEXg}{localhost}{127.0.0.1:9300}{ml.machine_memory=8389681152, xpack.installed=true, ml.max_open_jobs=20, ml.enabled=true}
    [2019-04-09T14:56:35,834][INFO ][o.e.c.s.ClusterApplierService] [test_mall] new_master {test_mall}{UREzq21QS9Cx29nz8AwRZQ}{m4bxiSN8QXalnNNmGZYEXg}{localhost}{127.0.0.1:9300}{ml.machine_memory=8389681152, xpack.installed=true, ml.max_open_jobs=20, ml.enabled=true}, reason: apply cluster state (from master [master {test_mall}{UREzq21QS9Cx29nz8AwRZQ}{m4bxiSN8QXalnNNmGZYEXg}{localhost}{127.0.0.1:9300}{ml.machine_memory=8389681152, xpack.installed=true, ml.max_open_jobs=20, ml.enabled=true} committed version [1] source [zen-disco-elected-as-master ([0] nodes joined)]])
    [2019-04-09T14:56:35,932][INFO ][o.e.h.n.Netty4HttpServerTransport] [test_mall] publish_address {xxx.xxx.xx.xx:9200}, bound_addresses {[::]:9200}
    [2019-04-09T14:56:35,933][INFO ][o.e.n.Node               ] [test_mall] started
    [2019-04-09T14:56:36,551][WARN ][o.e.x.s.a.s.m.NativeRoleMappingStore] [test_mall] Failed to clear cache for realms [[]]
    [2019-04-09T14:56:36,618][INFO ][o.e.l.LicenseService     ] [test_mall] license [fd218012-bd44-4eae-8831-35cb0da9702b] mode [basic] - valid
    [2019-04-09T14:56:36,629][INFO ][o.e.g.GatewayService     ] [test_mall] recovered [4] indices into cluster_state
    [2019-04-09T14:56:37,461][INFO ][o.e.c.r.a.AllocationService] [test_mall] Cluster health status changed from [RED] to [YELLOW] (reason: [shards started [[test][4], [testserverelastic_][0]] ...]).
    [2019-04-09T15:35:24,191][INFO ][o.e.c.m.MetaDataCreateIndexService] [test_mall] [testserverelastic1] creating index, cause [api], templates [], shards [6]/[6], mappings [category]
4

Yes, I've installed my elasticsearch in my testserver and I tried to connect to it locally from my system. I couldnt connect through curl or browser.

5

Don't expose your cluster on internet without any protection.

You can have a look at cloud.elastic.co where you can have a secured cluster up and running in few minutes.

But if you really want to do it:

Change network.host setting to bound it to the public IP of your server.

6

Thanks for your support. I'll check cloud.elastic.

7

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