[英]Cannot connect node js app to mongodb running in a docker swarm
[英]Cannot connect from inside docker swarm cluster to external mongodb service
如果我運行后端的單個docker容器,它運行良好並連接到在主機上運行的mongodb。 但是當我使用docker-compose運行我的后端時,它不會連接到mongodb並打印到控制台:
MongoError: failed to connect to server [12.345.678.912:27017] on first connect [MongoError: connection 0 to 12.345.678.912:27017 timed out]
docker-compose.yml內容:
version: "3"
services:
web:
image: __BE-IMAGE__
deploy:
replicas: 1
restart_policy:
condition: on-failure
resources:
limits:
cpus: "0.1"
memory: 2048M
ports:
- "1337:8080"
networks:
- webnet
visualizer:
image: dockersamples/visualizer:stable
ports:
- "1340:8080"
volumes:
- "/var/run/docker.sock:/var/run/docker.sock"
deploy:
placement:
constraints: [node.role == manager]
networks:
- webnet
networks:
webnet:
我如何運行單個docker容器:
docker run -p 1337:8080 BE-IMAGE
你需要鏈接mongo端口,因為localhost與容器內部和外部不同
ports:
- "1337:8080"
- "27017:27017"
在端口定義左側是外側,右側是您的容器內部...您的錯誤說您的容器內部它無法看到端口27017 ...上面只是鏈接該mongo端口所以容器可以訪問該端口之外的搬運工人
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