Ho avuto un problema simile e l'ho risolto con il seguente file di composizione:
version: "3.8"
services:
mongo1:
image: mongo:4.2
container_name: mongo1
command: ["--replSet", "my-replica-set", "--bind_ip_all", "--port", "30001"]
volumes:
- ./data/mongo-1:/data/db
ports:
- 30001:30001
healthcheck:
test: test $$(echo "rs.initiate({_id:'my-replica-set',members:[{_id:0,host:\"mongo1:30001\"},{_id:1,host:\"mongo2:30002\"},{_id:2,host:\"mongo3:30003\"}]}).ok || rs.status().ok" | mongo --port 30001 --quiet) -eq 1
interval: 10s
start_period: 30s
mongo2:
image: mongo:4.2
container_name: mongo2
command: ["--replSet", "my-replica-set", "--bind_ip_all", "--port", "30002"]
volumes:
- ./data/mongo-2:/data/db
ports:
- 30002:30002
mongo3:
image: mongo:4.2
container_name: mongo3
command: ["--replSet", "my-replica-set", "--bind_ip_all", "--port", "30003"]
volumes:
- ./data/mongo-3:/data/db
ports:
- 30003:30003
con quanto segue nel mio /etc/hosts file:
127.0.0.1 mongo1
127.0.0.1 mongo2
127.0.0.1 mongo3
L'ho documentato in un repository GitHub e con un piccolo post sul blog qui:
https://github.com/UpSync-Dev/docker-compose-mongo-replica-set
https://www.upsync.dev/2021/02/02/run-mongo-replica-set.html
