Multiple Mongo container in ECS - mongodb

Question

I have made this task definition in ansible to create two container in an ECS cluster:
- name: Create task definition
community.aws.ecs_taskdefinition:
containers:
- name: mongo-db
essential: true
image: "mongo:5.0.9"
environment:
- name: MONGO_INITDB_ROOT_USERNAME
value: "{{ lookup('env', 'DB_USER') }}"
- name: MONGO_INITDB_ROOT_PASSWORD
value: "{{ lookup('env', 'DB_PASSWORD') }}"
mountPoints:
- containerPath: "/data"
sourceVolume: mongodb-data-local
readOnly: true
- containerPath: "/dump"
sourceVolume: mongodb-dump
- containerPath: "/docker-entrypoint-initdb.d/init-mongo.sh"
sourceVolume: db-init
readOnly: true
portMappings:
- containerPort: 27017
hostPort: 27017
- name: roadmap-mongo-db
essential: false
image: "mongo:5.0.9"
command: ["mongod", "--port", "27018"]
environment:
- name: MONGO_INITDB_ROOT_USERNAME
value: "{{ lookup('env', 'DB_USER') }}"
- name: MONGO_INITDB_ROOT_PASSWORD
value: "{{ lookup('env', 'DB_PASSWORD') }}"
mountPoints:
- containerPath: "/data"
sourceVolume: roadmap-mongodb-data-local
readOnly: true
- containerPath: "/dump"
sourceVolume: roadmap-mongodb-dump
- containerPath: "/docker-entrypoint-initdb.d/init-mongo.sh"
sourceVolume: roadmap-db-init
portMappings:
portMappings:
- containerPort: 27018
hostPort: 27018
volumes:
- name: mongodb-data-local
- name: roadmap-mongodb-data-local
- name: mongodb-dump
host:
sourcePath: "/home/ec2-user/dump"
- name: roadmap-mongodb-dump
host:
sourcePath: "/home/ec2-user/roadmap-dump"
- name: db-init
host:
sourcePath: "/home/ec2-user/init-mongo.sh"
- name: roadmap-db-init
host:
sourcePath: "/home/ec2-user/roadmapdb/init-mongo.sh"
cpu: 128
memory: 340
family: showcase-task
force_create: True
state: present
basically I am creating two mongodb containers. The two containers start just fine, the first container (mongo-db) runs properly, I can exec into it and run mongo -u root to connect to it and also the services that interact with it can communicate just fine, so no problem with the first container.
Instead the second container is giving me problems, even if it runs ok and I can exec into it, I cannot do mongo -u root
mongo -u root gives this:
MongoDB shell version v5.0.9
Enter password:
connecting to: mongodb://127.0.0.1:27017/?compressors=disabled&gssapiServiceName=mongodb
Error: couldn't connect to server 127.0.0.1:27017, connection attempt failed: SocketException: Error connecting to 127.0.0.1:27017 :: caused by :: Connection refused :
connect#src/mongo/shell/mongo.js:372:17
#(connect):2:6
exception: connect failed
exiting with code 1
It seems it still wants to connect to 27017 instead of 27018. What am I doing wrong?
However the logs seems to be fine as it says:
{"t":{"$date":"2022-11-03T12:46:27.654+00:00"},"s":"I", "c":"NETWORK", "id":23015, "ctx":"listener","msg":"Listening on","attr":{"address":"/tmp/mongodb-27018.sock"}}
{"t":{"$date":"2022-11-03T12:46:27.753+00:00"},"s":"I", "c":"NETWORK", "id":23015, "ctx":"listener","msg":"Listening on","attr":{"address":"0.0.0.0"}}
{"t":{"$date":"2022-11-03T12:46:27.756+00:00"},"s":"I", "c":"NETWORK", "id":23016, "ctx":"listener","msg":"Waiting for connections","attr":{"port":27018,"ssl":"off"}}