[Local mongo replicaset with docker] #docker #mongo

local-mongo-replicaset-with-docker

# pull the official mongo docker container
docker pull mongo

# create network
docker network create my-mongo-cluster

# create mongos
docker run -d --net my-mongo-cluster -p 27017:27017 --name mongo1 mongo mongod --replSet my-mongo-set --port 27017
docker run -d --net my-mongo-cluster -p 27018:27018 --name mongo2 mongo mongod --replSet my-mongo-set --port 27018
docker run -d --net my-mongo-cluster -p 27019:27019 --name mongo3 mongo mongod --replSet my-mongo-set --port 27019

# add hosts
127.0.0.1       mongo1 mongo2 mongo3

# setup replica set
docker exec -it mongo1 mongo
db = (new Mongo('localhost:27017')).getDB('test')
config={"_id":"my-mongo-set","members":[{"_id":0,"host":"mongo1:27017"},{"_id":1,"host":"mongo2:27018"},{"_id":2,"host":"mongo3:27019"}]}
rs.initiate(config)

# connection URI
mongodb://localhost:27017,localhost:27018,localhost:27019/{db}?replicaSet=my-mongo-set

how to write a docker-compose file?

With docker compose file find here:
https://gist.github.com/harveyconnor/518e088bad23a273cae6ba7fc4643549

Excelent, thanks a lot. I didn't add mongos to the hosts file.

worked on local linux machine, but for robo3t connection I used mongo1, mongo2 and mongo3 names.
didn't work when try connect using localhost:...

@SuddenGunter You'll need to add 127.0.0.1 mongo1 mongo2 mongo3 to your hosts file

This replicaSet is created on a single machine. Can you please point to a resource where the writer has used 3 different machines?

Excelent.

I love you bro