Connection refused when running my vertx3 http handler in docker swarm - docker

Question

I'm trying to deploy a vertx3 service on docker swarm but when I run
$ curl localhost:4000
curl: (7) Failed to connect to localhost port 4000: Connection refused
and I can't figure out how to make it work, help appreciated. See below the code and more info.
This is my vertx3 application
import io.vertx.core.AbstractVerticle;
import io.vertx.core.Future;
public class MainVerticle extends AbstractVerticle {
#Override
public void start(Future<Void> fut) {
vertx.createHttpServer().requestHandler(r -> {
r.response().end("<h1>Powered by Vert.x3</h1>");
}).listen(8080, result -> {
if (result.succeeded()) {
fut.complete();
} else {
fut.fail(result.cause());
}
});
}
}
this is my dockerfile
FROM vertx/vertx3
ENV VERTICLE_NAME com.shop.services.products.MainVerticle
ENV VERTICLE_FILE target/products-3.5.1.jar
ENV VERTICLE_HOME /usr/verticles
EXPOSE 8080
COPY $VERTICLE_FILE $VERTICLE_HOME/
WORKDIR $VERTICLE_HOME
ENTRYPOINT ["sh", "-c"]
CMD ["exec vertx run $VERTICLE_NAME -cp $VERTICLE_HOME/*"]
and this is my docker-compose.yml
version: "3"
services:
web:
image: sergionava89/products:v1
deploy:
replicas: 5
resources:
limits:
cpus: "0.1"
memory: 50M
restart_policy:
condition: on-failure
ports:
- "4000:8080"
networks:
- webnet
networks:
webnet:
I try to run a local docker swarm
docker swarm init
then I get this message
Error response from daemon: could not choose an IP address to advertise since this system has multiple addresses on interface enp0s25 (2a02:c7d:501a:f200:84fc:532e:737a:7a21 and 2a02:c7d:501a:f200:ad08:5748:44d4:6726) - specify one with --advertise-addr
so I run the following
docker swarm init --advertise-addr 2a02:c7d:501a:f200:84fc:532e:737a:7a21
then launch the container
docker stack deploy -c docker-compose.yml shop
to which I get
Creating network shop_webnet
Creating service shop_web
when I try to hit the endpoint I get
$ curl localhost:4000
curl: (7) Failed to connect to localhost port 4000: Connection refused
Output of docker service
docker service ls
ID NAME MODE REPLICAS IMAGE PORTS
sj8k1hd26cbk shop_web replicated 5/5 sergionava89/products:v1 *:4000->8080/tcp
docker service ps shop_web
ID NAME IMAGE NODE DESIRED STATE CURRENT STATE ERROR PORTS
sjsoh7atv24x shop_web.1 sergionava89/products:v1 sergio-ThinkPad-T431s Running Running 9 minutes ago
owakk9xqty69 shop_web.2 sergionava89/products:v1 sergio-ThinkPad-T431s Running Running 9 minutes ago
yvlopiq6vtjh shop_web.3 sergionava89/products:v1 sergio-ThinkPad-T431s Running Running 9 minutes ago
op7yv8vuliuk shop_web.4 sergionava89/products:v1 sergio-ThinkPad-T431s Running Running 9 minutes ago
z8imj3b572tg shop_web.5 sergionava89/products:v1 sergio-ThinkPad-T431s Running Running 9 minutes ago

Answer 1

As suggested in the comments 127.0.0.1:4000 works