# Nodejs (typescript) communication error with elastic
**URL:** https://discuss.elastic.co/t/nodejs-typescript-communication-error-with-elastic/323687
**Category:** Elasticsearch
**Tags:** docker, language-clients
**Created:** [January 22, 2023, 5:00pm UTC](https://discuss.elastic.co/t/nodejs-typescript-communication-error-with-elastic/323687 "2023-01-22T17:00:13Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@David\_Robles](https://discuss.elastic.co/u/David_Robles)
#### Post date: [January 22, 2023, 5:00pm UTC](https://discuss.elastic.co/t/nodejs-typescript-communication-error-with-elastic/323687/1 "2023-01-22T17:00:13Z")
I have a problem connecting nodejs with elasticsearch, at this moment I have dockerized the version of Elasticsearch 8.6.0 as the documentation comes, the communication between kibana and elastic is correct since I have access and I have created indexes from kibana without any problem, now I have the error when connecting to nodeJs with typescript
```auto
import { Client } from '@elastic/elasticsearch'
const client = new Client({
node: 'https://localhost:9200',
auth: {
username: 'elastic',
password: 'elastic_pass'
}
})
//Endpoint
this.app.post('/testElastic', (req, res) => {
client.index({
index: 'index-test',
document: {
character: 'Ned Stark',
quote: 'Winter is coming.'
}
},)
})
```
docker-compose.yml:
```auto
version: "2.2"
services:
setup:
image: docker.elastic.co/elasticsearch/elasticsearch:${STACK_VERSION}
volumes:
- certs:/usr/share/elasticsearch/config/certs
user: "0"
command: >
bash -c '
if [x${ELASTIC_PASSWORD} == x]; then
echo "Set the ELASTIC_PASSWORD environment variable in the .env file";
exit 1;
elif [x${KIBANA_PASSWORD} == x]; then
echo "Set the KIBANA_PASSWORD environment variable in the .env file";
exit 1;
fi;
if [! -f config/certs/ca.zip]; then
echo "Creating CA";
bin/elasticsearch-certutil ca --silent --pem -out config/certs/ca.zip;
unzip config/certs/ca.zip -d config/certs;
fi;
if [! -f config/certs/certs.zip]; then
echo "Creating certs";
echo -ne \
"instances:\n"\
" - name: es01\n"\
" dns:\n"\
" - es01\n"\
" - localhost\n"\
" ip:\n"\
" - 127.0.0.1\n"\
" - name: es02\n"\
" dns:\n"\
" - es02\n"\
" - localhost\n"\
" ip:\n"\
" - 127.0.0.1\n"\
" - name: es03\n"\
" dns:\n"\
" - es03\n"\
" - localhost\n"\
" ip:\n"\
" - 127.0.0.1\n"\
> config/certs/instances.yml;
bin/elasticsearch-certutil cert --silent --pem -out config/certs/certs.zip --in config/certs/instances.yml --ca-cert config/certs/ca/ca.crt --ca-key config/certs/ca/ca.key;
unzip config/certs/certs.zip -d config/certs;
fi;
echo "Setting file permissions"
chown -R root:root config/certs;
find . -type d -exec chmod 750 \{\} \;;
find . -type f -exec chmod 640 \{\} \;;
echo "Waiting for Elasticsearch availability";
until curl -s --cacert config/certs/ca/ca.crt https://es01:9200 | grep -q "missing authentication credentials"; do sleep 30; done;
echo "Setting kibana_system password";
until curl -s -X POST --cacert config/certs/ca/ca.crt -u "elastic:${ELASTIC_PASSWORD}" -H "Content-Type: application/json" https://es01:9200/_security/user/kibana_system/_password -d "{\"password\":\"${KIBANA_PASSWORD}\"}" | grep -q "^{}"; do sleep 10; done;
echo "All done!";
'
healthcheck:
test: ["CMD-SHELL", "[-f config/certs/es01/es01.crt]"]
interval: 1s
timeout: 5s
retries: 120
es01:
depends_on:
setup:
condition: service_healthy
image: docker.elastic.co/elasticsearch/elasticsearch:${STACK_VERSION}
volumes:
- certs:/usr/share/elasticsearch/config/certs
- esdata01:/usr/share/elasticsearch/data
ports:
- ${ES_PORT}:9200
environment:
- node.name=es01
- cluster.name=${CLUSTER_NAME}
- cluster.initial_master_nodes=es01,es02,es03
- discovery.seed_hosts=es02,es03
- ELASTIC_PASSWORD=${ELASTIC_PASSWORD}
- bootstrap.memory_lock=true
- xpack.security.enabled=true
- xpack.security.http.ssl.enabled=true
- xpack.security.http.ssl.key=certs/es01/es01.key
- xpack.security.http.ssl.certificate=certs/es01/es01.crt
- xpack.security.http.ssl.certificate_authorities=certs/ca/ca.crt
- xpack.security.transport.ssl.enabled=true
- xpack.security.transport.ssl.key=certs/es01/es01.key
- xpack.security.transport.ssl.certificate=certs/es01/es01.crt
- xpack.security.transport.ssl.certificate_authorities=certs/ca/ca.crt
- xpack.security.transport.ssl.verification_mode=certificate
- xpack.license.self_generated.type=${LICENSE}
mem_limit: ${MEM_LIMIT}
ulimits:
memlock:
soft: -1
hard: -1
healthcheck:
test:
[
"CMD-SHELL",
"curl -s --cacert config/certs/ca/ca.crt https://localhost:9200 | grep -q 'missing authentication credentials'",
]
interval: 10s
timeout: 10s
retries: 120
es02:
depends_on:
- es01
image: docker.elastic.co/elasticsearch/elasticsearch:${STACK_VERSION}
volumes:
- certs:/usr/share/elasticsearch/config/certs
- esdata02:/usr/share/elasticsearch/data
environment:
- node.name=es02
- cluster.name=${CLUSTER_NAME}
- cluster.initial_master_nodes=es01,es02,es03
- discovery.seed_hosts=es01,es03
- bootstrap.memory_lock=true
- xpack.security.enabled=true
- xpack.security.http.ssl.enabled=true
- xpack.security.http.ssl.key=certs/es02/es02.key
- xpack.security.http.ssl.certificate=certs/es02/es02.crt
- xpack.security.http.ssl.certificate_authorities=certs/ca/ca.crt
- xpack.security.transport.ssl.enabled=true
- xpack.security.transport.ssl.key=certs/es02/es02.key
- xpack.security.transport.ssl.certificate=certs/es02/es02.crt
- xpack.security.transport.ssl.certificate_authorities=certs/ca/ca.crt
- xpack.security.transport.ssl.verification_mode=certificate
- xpack.license.self_generated.type=${LICENSE}
mem_limit: ${MEM_LIMIT}
ulimits:
memlock:
soft: -1
hard: -1
healthcheck:
test:
[
"CMD-SHELL",
"curl -s --cacert config/certs/ca/ca.crt https://localhost:9200 | grep -q 'missing authentication credentials'",
]
interval: 10s
timeout: 10s
retries: 120
es03:
depends_on:
- es02
image: docker.elastic.co/elasticsearch/elasticsearch:${STACK_VERSION}
volumes:
- certs:/usr/share/elasticsearch/config/certs
- esdata03:/usr/share/elasticsearch/data
environment:
- node.name=es03
- cluster.name=${CLUSTER_NAME}
- cluster.initial_master_nodes=es01,es02,es03
- discovery.seed_hosts=es01,es02
- bootstrap.memory_lock=true
- xpack.security.enabled=true
- xpack.security.http.ssl.enabled=true
- xpack.security.http.ssl.key=certs/es03/es03.key
- xpack.security.http.ssl.certificate=certs/es03/es03.crt
- xpack.security.http.ssl.certificate_authorities=certs/ca/ca.crt
- xpack.security.transport.ssl.enabled=true
- xpack.security.transport.ssl.key=certs/es03/es03.key
- xpack.security.transport.ssl.certificate=certs/es03/es03.crt
- xpack.security.transport.ssl.certificate_authorities=certs/ca/ca.crt
- xpack.security.transport.ssl.verification_mode=certificate
- xpack.license.self_generated.type=${LICENSE}
mem_limit: ${MEM_LIMIT}
ulimits:
memlock:
soft: -1
hard: -1
healthcheck:
test:
[
"CMD-SHELL",
"curl -s --cacert config/certs/ca/ca.crt https://localhost:9200 | grep -q 'missing authentication credentials'",
]
interval: 10s
timeout: 10s
retries: 120
kibana:
depends_on:
es01:
condition: service_healthy
es02:
condition: service_healthy
es03:
condition: service_healthy
image: docker.elastic.co/kibana/kibana:${STACK_VERSION}
volumes:
- certs:/usr/share/kibana/config/certs
- kibanadata:/usr/share/kibana/data
ports:
- ${KIBANA_PORT}:5601
environment:
- SERVERNAME=kibana
- ELASTICSEARCH_HOSTS=https://es01:9200
- ELASTICSEARCH_USERNAME=kibana_system
- ELASTICSEARCH_PASSWORD=${KIBANA_PASSWORD}
- ELASTICSEARCH_SSL_CERTIFICATEAUTHORITIES=config/certs/ca/ca.crt
mem_limit: ${MEM_LIMIT}
healthcheck:
test:
[
"CMD-SHELL",
"curl -s -I http://localhost:5601 | grep -q 'HTTP/1.1 302 Found'",
]
interval: 10s
timeout: 10s
retries: 120
database_postgresql:
build: ./database
restart: unless-stopped
ports:
- 5432:5432
volumes:
#- ./database/data:/var/lib/postgresql/data # Esto tiene que ser una variable
- db_data:/var/lib/postgresql/data # Esto tiene que ser una variable
- ./logs:/logs
container_name: PostgresQL
back:
build: ./back
restart: unless-stopped
ports:
- 3000:3000
volumes:
- ./back:/back
- /back/node_modules
depends_on:
- es01
- kibana
container_name: Alda_Back
front:
build: ./front
restart: unless-stopped
ports:
- 4200:4200
volumes:
- ./front:/front
- /front/node_modules
- /front/dist
depends_on:
- back
container_name: Alda_Front
volumes:
db_data:
driver: local
certs:
driver: local
esdata01:
driver: local
esdata02:
driver: local
esdata03:
driver: local
kibanadata:
driver: local
```
.env
```auto
ELASTIC_PASSWORD=elastic_pass
KIBANA_PASSWORD=kibana_pass
STACK_VERSION=8.6.0
CLUSTER_NAME=docker-cluster
LICENSE=basic
ES_PORT=9200
KIBANA_PORT=5601
MEM_LIMIT=1073741824
```
ERROR:
```auto
ConnectionError: connect ECONNREFUSED 127.0.0.1:9200
at SniffingTransport.request (/back/node_modules/@elastic/transport/src/Transport.ts:585:17)
at processTicksAndRejections (node:internal/process/task_queues:96:5)
at async Client.IndexApi [as index] (/back/node_modules/@elastic/elasticsearch/src/api/api/index.ts:71:10) {
meta: {
body: undefined,
statusCode: 0,
headers: {},
meta: {
context: null,
request: [Object],
name: 'elasticsearch-js',
connection: [Connection],
attempts: 3,
aborted: false
},
warnings: [Getter]
}
}
```
pd: I check using the netstat command that the nodejs container is at ::3000 (it does not specify address) and the elasticsearch container is 0 0.0.0.0:9200, Could it be the cause of my problem?
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [February 19, 2023, 5:00pm UTC](https://discuss.elastic.co/t/nodejs-typescript-communication-error-with-elastic/323687/2 "2023-02-19T17:00:36Z")
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