Nginx cannot connect fluentd in EFK stack - elasticsearch

Question

I am setting up a stack with an application consisting of nginx, redis, mysql, myapp. Nginx proxies requests to myapp. I want to send logs from nginx to EFK stack, but an error occurs when starting the nginx service:
Error response from daemon: dial tcp 127.0.0.1:24224: connect: connection refused
docker-compose.yml for stack with myapp
version: "3.8"
services:
nginx:
image: nginx:alpine
deploy:
mode: replicated
replicas: 2
labels:
- traefik.enable=true
- traefik.http.routers.node1.rule=Host(`${NODE1}`)
- traefik.http.routers.node1.service=nginx
- traefik.http.routers.node2.rule=Host(`${NODE2}`)
- traefik.http.routers.node2.service=nginx
- traefik.http.routers.node3.rule=Host(`${NODE3}`)
- traefik.http.routers.node3.service=nginx
- traefik.http.services.nginx.loadbalancer.server.port=80
placement:
constraints:
- node.role == manager
logging:
driver: fluentd
options:
fluentd-address: localhost:24224
tag: nginx-
volumes:
- ./nginx/default.conf:/etc/nginx/conf.d/default.conf
ports:
- 80:80
depends_on:
- myapp
networks:
- traefik-public
...
All stacks are in the same traefik-public network, if you make ping fluentd from any container, fluentd responds
Part of efk.yml
version: "3.7"
services:
fluentd:
image: registry.rebrainme.com/docker_users_repos/3912/dkr-30-voting/fluentd
deploy:
mode: global
volumes:
- /mnt/fluent.conf:/fluentd/etc/fluent.conf
ports:
- "24224:24224"
- "24224:24224/udp"
depends_on:
- elasticsearch
- kibana
networks:
- traefik-public
...
fluent.conf
<source>
#type forward
port 24224
bind localhost
</source>
<match *.**>
#type copy
<store>
#type elasticsearch
host elasticsearch
port 9200
logstash_format true
logstash_prefix fluentd
logstash_dateformat %Y%m%d
include_tag_key true
type_name access_log
tag_key #log_name
flush_interval 1s
</store>
<store>
#type stdout
</store>
</match>
I ask for help

Answer 1

Tldr;
Because you are using 2 compose files. docker-compose.yml and efk.yml They are not sharing the same value for the network.
To Fix
Combine both file in a single one.
To Fix (with still 2 files separated)
You should first off all create a network.
docker network create traefik-public
Then update both compose file with
networks:
default:
external:
name: traefik-public
This should make it work.

Answer 2

In order for there to be a connection between the efk stack and the application stack, it is necessary to bind the fluentd port to the host port
version: "3.7"
services:
fluentd:
image: my_fluentd_image:latest
deploy:
mode: global
configs:
- source: fluent-conf
target: /fluentd/etc/fluent.conf
ports:
- target: 24224
published: 24224
protocol: tcp
mode: host
depends_on:
- elasticsearch
- kibana
networks:
- traefik-public