docker-compose: zipkin cannot connect to elasticsearch - docker

Question

I try to setup zipkin, elasticsearch, prometheus and grafana with docker-compose.yml
When I run dockers, see in the log:
dependencies_zipkin | 19/09/30 14:37:09 ERROR NetworkClient: Node [172.28.0.2:9200] failed (java.net.ConnectException: Connection refused (Connection refused)); no other nodes left - aborting...
I'm on MacOS X with docker 2.1.0.3
the content of my docker-compose.yml is this one:
version: '3.7'
services:
storage:
image: openzipkin/zipkin-elasticsearch7
container_name: elasticsearch
ports:
- "9200:9200"
environment:
- "xpack.security.enabled=false"
- "ES_JAVA_OPTS=-Xms512m -Xmx512m"
restart: unless-stopped
prometheus:
image: prom/prometheus:latest
container_name: prometheus
volumes:
- $PWD/prometheus:/etc/prometheus/
- /tmp/prometheus:/prometheus/data:rw
command:
- '--config.file=/etc/prometheus/prometheus.yml'
- '--storage.tsdb.path=/prometheus'
- '--web.console.libraries=/usr/share/prometheus/console_libraries'
- '--web.console.templates=/usr/share/prometheus/consoles'
ports:
- "9090:9090"
restart: unless-stopped
zipkin:
image: openzipkin/zipkin
container_name: zipkin
depends_on:
- dependencies
- storage
environment:
- "STORAGE_TYPE=elasticsearch"
- "ES_HOSTS=storage"
ports:
- "9411:9411"
restart: unless-stopped
grafana:
image: grafana/grafana
container_name: grafana
ports:
- "3000:3000"
restart: unless-stopped
dependencies:
image: openzipkin/zipkin-dependencies
container_name: dependencies_zipkin
depends_on:
- storage
environment:
- "STORAGE_TYPE=elasticsearch"
- "ES_HOSTS=storage"
When I connect to localhost:9200, I see that elasticsearch is working fine and on port 9411, zipkin is deployed but I have the error:
ERROR: cannot load service names: server error (Service Unavailable)(due to the network error
In the log, I have this information:
105 ^[[35mdependencies_zipkin |^[[0m 19/09/30 14:45:20 ERROR NetworkClient: Node [172.28.0.2:9200] failed (java.net.ConnectException: Connection refused (Connection refused)); no other nodes left - aborting...
and this one
^[[31mzipkin |^[[0m java.lang.IllegalStateException: couldn't connect any of [Endpoint{storage:80, ipAddr=172.28.0.2, weight=1000}]
Any idea?
UPDATE
by using mysql it is working fine, so the problem is at the level of elastic search.
I tried alsoo by using
"STORAGE_PORT_9200_TCP_ADDR=127.0.0.1"
but the issue still occurs.
UPDATE
As mention is the solution gave by Brian, I have to use:
ES_HOSTS=http://storage:9300
the key is on port, I was using the port 9200
The error disappear between zipkin and es but still occurs between es and zipkin-dependencies.

Answer 1

The problem lies in your ES_HOSTS variable, from the docs here:
ES_HOSTS: A comma separated list of elasticsearch base urls to connect to ex. http://host:9200.
Defaults to "http://localhost:9200".
So you will need: ES_HOSTS=http://storage:9200

Answer 2

Finally I have this file:
version: '3.7'
services:
storage:
image: openzipkin/zipkin-elasticsearch7
container_name: elasticsearch
ports:
- 9200:9200
zipkin:
image: openzipkin/zipkin
container_name: zipkin
environment:
- STORAGE_TYPE=elasticsearch
- "ES_HOSTS=elasticsearch:9300"
ports:
- 9411:9411
depends_on:
- storage
dependencies:
image: openzipkin/zipkin-dependencies
container_name: dependencies
entrypoint: crond -f
depends_on:
- storage
environment:
- STORAGE_TYPE=elasticsearch
- "ES_HOSTS=elasticsearch:9300"
- "ES_NODES_WAN_ONLY=true"
prometheus:
image: prom/prometheus:latest
container_name: prometheus
volumes:
- $PWD/prometheus:/etc/prometheus/
- /tmp/prometheus:/prometheus/data:rw
command:
- '--config.file=/etc/prometheus/prometheus.yml'
- '--storage.tsdb.path=/prometheus'
- '--web.console.libraries=/usr/share/prometheus/console_libraries'
- '--web.console.templates=/usr/share/prometheus/consoles'
ports:
- "9090:9090"
grafana:
image: grafana/grafana
container_name: grafana
depends_on:
- prometheus
ports:
- "3000:3000"
Main differences are the usage of
"ES_HOSTS=elasticsearch:9300"
instead of
"ES_HOSTS=storage:9300"
and in the dependencies configuration I add the entrypoint in dependencies:
entrypoint: crond -f
This one is really the key to not have the exception when I start docker-compose.
To solve this issue, I check the this project: https://github.com/openzipkin/docker-zipkin
The remaining question is: why do I need to use entrypoint: crond -f