Elasticsearch Failed to connect to localhost port 9200 - Connection refused

Question

When I tried connecting to Elasticsearch using the  curl http   localhost 9200 it is working fine   But when I run the curl http   IpAddress 9200 it is throwing an error saying      Failed to connect to localhost port 9200  Connection refused   How to resolve this error

User · Answer

I had the same problem refusing connections on 9200 port. Check elasticsearch service status with the command sudo service elasticsearch status. If it is presenting an error and you read anything related to Java, probably the problem is your jvm memory. You can edit it in /etc/elasticsearch/jvm.options. For a 1GB RAM memory machine on Amazon environment, I kept my configuration on:

-Xms128m
-Xmx128m

After setting that and restarting elasticsearch service, it worked like a charm. Nmap and UFW (if you use local firewall) checking should also be useful.

User · Answer

In my case  the problem is with java version  i installed open-jdk 11 previously  Thats creating the issue while starting the service  I changed it open-jdk 8 and it started working

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Not useful for 7 5 0 and above

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After utilizing some of the answers above  don t forget that after an apt install  a total reboot might be in order

User · Answer

Just to add on this  I ve came across many docs through google that said to set network host to localhost   Doing so gave me the infamous connection refused  You must use an IP address  127 0 0 1   not a FQDN   Jeff

User · Answer

Edit elasticsearch yml and add the following line  http host  0 0 0 0   network host  0 0 0 0 didn t work for

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In my case elasticsearch was started  But still had   curl   7  Failed to connect to localhost port 9200  Connection refused   The following command was unsuccessful  sudo service elasticsearch restart   In order to make it work  I had to run instead  sudo systemctl restart elasticsearch   Then it went all fine

User · Answer

Why don t you start with this command-line     sudo service elasticsearch status   I did it and get    There is insufficient memory for the Java Runtime       Then I edited  etc elasticsearch jvm options file                                                                            Xms represents the initial size of total heap space   Xmx represents the maximum size of total heap space   -Xms2g  -Xms2g  -Xms512m -Xmx512m                                                                          This worked like a charm

User · Answer

Change the network bind to 0 0 0 0 and http port to 9200  The bind address 0 0 0 0 means all IPv4 addresses on the local machine  If a host has two IP addresses  192 168 1 1 and 10 1 2 1  and a server running on the host listens on 0 0 0 0  it will be reachable at both of those IPs

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For those of you installing ELK on virtual machine in GCP  Google Cloud Platform   make sure that you created firewall rule of Ingress type  i e  for incoming to VM traffic   You can specify in the rule multiple ports at a time by separating them with comma  5000 5044 5601 9200 9300 9600  In that rule you may want to specify a tag  pick tag s name as you like  for example docker-elk that will target your VM  Targets column    On VM s settings page assign that tag to your VM   After doing that I was able to access Elasticsearch in my browser via port 9200  And I didn t have to edit elasticsearch yml file whatsoever

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For versions higher than 6 8  7 x  you need two things  1  change the network host to listen on the public interface  In the configuration file elasticsearch yml  for debian and derivatives - gt   etc elasticsearch elasticsearch yml    set the network host or network bind host to       network host  0 0 0 0       Or the interface that must be reached  2  Before going to production it s necessary to set important discovery and cluster formation settings  According to elastic co  v6 8 - gt  discovery settings that should set  by e g       roughly means the same as 1 discovery zen minimum master nodes  -1      v7 x - gt  discovery settings that should set  by one single node discovery type  single-node  OR set discovery seed hosts   127 0 0 1 9200   at least one of  discovery seed hosts  discovery seed providers  cluster initial master nodes  must be configured

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OpenJDK 64-Bit Server VM warning  INFO  os  commit memory 0x0000000085330000  2060255232  0  failed  error  Cannot allocate memory   errno 12    be sure that the server is started  I ve seen this problem when my virtual machine had too litle RAM and es could not start   sudo systemctl status elasticsearch   the above will show you if es is indeed running

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None of the proposed solutions here worked for me  but what eventually got it working was adding the following to elasticsearch yml  network    host  0 0 0 0 http    port  9200   After that  I restarted the service and now I can curl it from both within the VM and externally  For some odd reason  I had to try a few different variants of a curl call inside the VM before it worked   curl localhost 9200 curl http   localhost 9200 curl 127 0 0 1 9200   Note  I m using Elasticsearch 5 5 on Ubuntu 14 04

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I experienced a similar issue    Here s how I solved it  Run the service command below to start ElasticSearch  sudo service elasticsearch start   OR  sudo systemctl start elasticsearch   If you still get the error     curl   7  Failed to connect to localhost port 9200  Connection refused   Run the service command below to check the status of ElasticSearch  sudo service elasticsearch status   OR  sudo systemctl status elasticsearch   If you get a response  Active  active  running   like the one below then you ElasticSearch is active and running       elasticsearch service - Elasticsearch      Loaded  loaded   usr lib systemd system elasticsearch service  disabled  vendor preset  enabled       Active  active  running  since Sat 2019-09-21 11 22 21 WAT  3s ago   You can then test that your Elasticsearch node is running by sending an HTTP request to port 9200 on localhost using the command below   curl http   localhost 9200   Else  if you get a response a different response  you may have to debug further to fix it  but the running the command below  will help you detect what caveats are holding ElasticSearch service from starting   sudo service elasticsearch status   OR  sudo systemctl status elasticsearch   If you want to stop the ElasticSearch service  simply run the service command below   sudo service elasticsearch stop   OR  sudo systemctl stop elasticsearch   N B  You may have to run the command sudo service elasticsearch status OR sudo systemctl status elasticsearch each time you encounter the error  in order to tell the state of the ElasticSearch service   This also applies for Kibana  run the command sudo service kibana status OR sudo systemctl status kibana each time you encounter the error  in order to tell the state of the Kibana service   That s all   I hope this helps

User · Answer

Edit  etc elasticsearch elasticsearch yml and add the following line   network host  0 0 0 0  This will  unset  this parameter and will allow connections from other IPs

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By default it should bind to all local addresses  So  assuming you don t have a network layer issue with firewalls  the only ES setting I can think to check is network bind host and make sure it is either not set or is set to 0 0 0 0 or   0 or to the correct IP address for your network   Update  per comments in ES 2 3 you should set network host instead

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My 2 cents   I just followed the install procedure on Digital Ocean  apparently the package available in the repos is not up to date  I deleted everything and followed the install procedure direct from Elastic Search and everything is working now  basically the out of the box behaviour is on a localhost pointing to 9200  Same thing issue found with Kibana  the solution for me was too  to remove everything and just follow their procedure  Hope this saves someone two hours  the time I spent figuring out how to setup ELK    en

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Make sure that port 9200 is open for my case it was an amazon instance so when i opened it in my security group the curl command worked

User · Answer

Tried everything on this page  and only instructions from here helped   in  etc default elasticsearch  make sure these are un-commented   START DAEMON true ES USER elasticsearch ES GROUP elasticsearch LOG DIR  var log elasticsearch DATA DIR  var lib elasticsearch WORK DIR  tmp elasticsearch CONF DIR  etc elasticsearch CONF FILE  etc elasticsearch elasticsearch yml RESTART ON UPGRADE true   make sure  var lib elasticsearch is owned by elasticsearch user   chown -R elasticsearch elasticsearch  var lib elasticsearch

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Open your Dockerfile under elasticsearch folder and update  network host 0 0 0 0  with  network host 127 0 0 1   Then restart the container  Check your connection with curl     curl http   docker-machine-ip 9200      name     vI6Zq D      cluster name     elasticsearch      cluster uuid     hhyB Wa4QwSX6zZd1F894Q      version           number     5 2 0        build hash     24e05b9        build date     2017-01-24T19 52 35 800Z        build snapshot    false       lucene version     6 4 0          tagline     You Know  for Search

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My problem was I could not work with localhost I needed to set it to localhost s IP address  network bind host  127 0 0 1

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For this problem  I had to use    sudo  usr share elasticsearch bin elasticsearch start  to be able to get something on ports 9200 9300  sudo netstat -ntlp  and a response to   curl -XGET http   localhost 9200

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If you encounter the Connection refused error  simply run the command below to check the status of ElasticSearch service  sudo service elasticsearch status   This will help you decipher the state of ElasticSearch service and what to do about it

User · Answer

Update your jdk to latest minimum version for your elasticsearch

User · Answer

Disabling SELinux worked for me  although I don t suggest it - I did that just for a PoC

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In this case  first of all you need to check the java version using below command   java -version   after running this command you get something like this       java version  1 7 0 51    OpenJDK Runtime Environment  rhel-2 4 5 5 el7-x86 64 u51-b31    OpenJDK 64-Bit Server VM  build 24 51-b03  mixed mode    then use this command   update-alternatives --config java   and select the below version        1            usr lib jvm java-1 7 0-openjdk-1 7 0 51-2 4 5 5 el7 x86 64 jre bin java      2            usr java jdk1 8 0 73 jre bin java   Enter to keep the current selection     or type selection number  2  curl -XGET http   127 0 0 1 9200

[elasticsearch] Elasticsearch: Failed to connect to localhost port 9200 - Connection refused

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