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

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?

Not useful for 7.5.0 and above.

Update your jdk to latest minimum version for your elasticsearch.

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.

After utilizing some of the answers above, don't forget that after an apt install, a total reboot might be in order.

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

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 -> /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 -> discovery settings that should set.
by e.g

...
# roughly means the same as 1
discovery.zen.minimum_master_nodes: -1
...

v7.x -> 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.

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.

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.

Disabling SELinux worked for me, although I don't suggest it - I did that just for a PoC

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

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

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.

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

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.

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"
}

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.

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

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.

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.

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

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.

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/

Edit elasticsearch.yml and add the following line

http.host: 0.0.0.0

network.host: 0.0.0.0 didn't work for

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.

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