Mongo Replica Set docker compose

docker-compose-mongo-replicaset.yml

version: "3"
services:
  mongo1:
    hostname: mongo1
    container_name: localmongo1
    image: mongo:4.0-xenial
    expose:
    - 27017
    ports:
      - 27011:27017
    restart: always
    entrypoint: [ "/usr/bin/mongod", "--bind_ip_all", "--replSet", "rs0" ]
  mongo2:
    hostname: mongo2
    container_name: localmongo2
    image: mongo:4.0-xenial
    expose:
    - 27017
    ports:
    - 27012:27017
    restart: always
    entrypoint: [ "/usr/bin/mongod", "--bind_ip_all", "--replSet", "rs0" ]
  mongo3:
    hostname: mongo3
    container_name: localmongo3
    image: mongo:4.0-xenial
    expose:
    - 27017
    ports:
    - 27013:27017
    restart: always
    entrypoint: [ "/usr/bin/mongod", "--bind_ip_all", "--replSet", "rs0" ]

Do not use x.509 Certificates or keyfile?

> rs.initiate({
...   _id : 'rs0',
...   members: [
...     { _id : 0, host : "{YOUR_LOCAL_IP}:27717" },
...     { _id : 1, host : "{YOUR_LOCAL_IP}:27718" },
...     { _id : 2, host : "{YOUR_LOCAL_IP}:27720",  arbiterOnly: true }
...   ]
... })
{
	"operationTime" : Timestamp(0, 0),
	"ok" : 0,
	"errmsg" : "No host described in new configuration 1 for replica set rs0 maps to this node",
	"code" : 93,
	"codeName" : "InvalidReplicaSetConfig",
	"$clusterTime" : {
		"clusterTime" : Timestamp(0, 0),
		"signature" : {
			"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
			"keyId" : NumberLong(0)
		}
	}
}
>

I am getting this error in window. I tested it in mac which works fine

I was able to solve the problem. Because I googled my ip address which is not configurable in mongoshell. running ipconfig to find the actual ipv4 address solve my issue

I resolved this problem using my local (host) IP:

rs.initiate({
  _id : 'rs0',
  members: [
    { _id : 0, host : "{YOUR_LOCAL_IP}:27011" },
    { _id : 1, host : "{YOUR_LOCAL_IP}:27012" },
    { _id : 2, host : "{YOUR_LOCAL_IP}:27013" }
  ]
})

This worked for me too 👍

Im confused - Did you exec into the mongo node container in order to setup the cluster? e.g. follow this to the letter? https://gist.github.com/asoorm/7822cc742831639c93affd734e97ce4f#gistcomment-2707084
Because the docker containers for Mongo are in the same network. e.g. mongo1 should be able to communicate with mongo2 via it's hostname & port. mongo2:27017.
If your mongo1 needs to go via the host machine (outside of docker) and come back into docker again, something clearly is not working.

@asoorm, yes, I followed the steps exactly. I found that the issue was from my host machine resolving the hostnames (mongo1, mongo2, mongo3).

I fixed this by adding the hostnames to /etc/hosts:

sudo echo "127.0.0.1 mongo1
          127.0.0.1 mongo2
          127.0.0.1 mongo3" | sudo tee -a /etc/hosts

and then this worked as expected:

rs.initiate(
  {
    _id : 'rs0',
    members: [
      { _id : 0, host : "mongo1:27017" },
      { _id : 1, host : "mongo2:27017" },
      { _id : 2, host : "mongo3:27017" }
    ]
  }
)

This worked for me, thanks.

Follow the below compose file, no more manual changes

mongodb:
   hostname: mongodb
   container_name: mongodb
   image: mongo:latest
   environment:
     MONGO_INITDB_DATABASE: moviebooking
     MONGO_REPLICA_SET_NAME: rs0
   volumes:
     - ./mongo-initdb.d:/docker-entrypoint-initdb.d
   expose:
     - 27017
   ports:
     - "27017:27017"
   restart: always
   healthcheck:
     test: test $$(echo "rs.initiate().ok || rs.slaveOk().ok || rs.status().ok" | mongo --quiet) -eq 1
     interval: 10s
     start_period: 30s
   entrypoint: [ "/usr/bin/mongod", "--bind_ip_all", "--replSet", "rs0" ]

shell into the container: docker exec -it mongodb /bin/bash

you should see the below

I know this has been here for awhile, but just doing this and liked the post by @mohansainani about doing this in a single docker image.

On a Mac, the only problem was that I was getting a error

Could not find host matching read preference { mode: \"nearest\" }

that indicated there was a network issue.

So.. I also used

sudo echo "127.0.0.1 mongodb" | sudo tee -a /etc/hosts

to make the host "findable"

After that I could connect with

mongo mongodb://localhost:27017/moviebooking?replicaSet=rs0

If that helps, bitnami/mongodb is a super good image.

  mongodb:
    image: bitnami/mongodb
    environment:
      MONGODB_REPLICA_SET_MODE: primary
      ALLOW_EMPTY_PASSWORD: "yes"

I can run everything perfectly but I can not connect to the set by any client.

I can run everything perfectly but I can not connect to the set by any client.

i have same problem
hel;p

Error:
getaddrinfo ENOTFOUND mongodb-primary

If that helps, bitnami/mongodb is a super good image.

  mongodb:
    image: bitnami/mongodb
    environment:
      MONGODB_REPLICA_SET_MODE: primary
      ALLOW_EMPTY_PASSWORD: "yes"

How did you configure the port

I have setup everything in this https://github.com/nguyenduyhust/docker-mongodb-replica-set.
Great if that's what you're looking for.

When I tried to connect with string URI mongodb://localhost:27011,localhost:27012,localhost:27013/?replicaSet=rs0 using Compass I got the following error
getaddrinfo EAI_AGAIN mongo1

By the way, you all would have to expose all Mongo replicaset instances ports in order to get connected to them, so I think It's redundant being exposing ports, It's better to use host network mode.

I was looking for a simple Compose for this and, unfortunately, I didn't find one complete and simple at the same time, because of that I made one as simple as possible where the secondary ones ingress their selfies on the master without any third-party script.

I hope you all find it useful

version: "3"
services:
  node0:
    image: mongo
    restart: always
    command: --replSet rs0 --bind_ip_all
    network_mode: host
    healthcheck:
      test: >
        mongosh --eval "try{rs.initiate().ok}catch(e){rs.status().ok}"
      interval: 3s

  node1:
    image: mongo
    depends_on:
      - node0
    restart: always
    command: --replSet rs0 --bind_ip_all --port 27018
    network_mode: host
    environment:
      PORT: 27018
    healthcheck:
      test: >
        mongosh --host localhost:27017 --eval "var me = '$${HOSTNAME}:$${PORT}'; rs.status().members.some(m => m.name == me) || rs.add({host: me})"
      interval: 3s

  node2:
    image: mongo
    depends_on:
      - node0
    restart: always
    command: --replSet rs0 --bind_ip_all --port 27019
    network_mode: host
    environment:
      PORT: 27019
    healthcheck:
      test: >
        mongosh --host localhost:27017 --eval "var me = '$${HOSTNAME}:$${PORT}'; rs.status().members.some(m => m.name == me) || rs.add({host: me})"
      interval: 3s

docker exec -it mongodb /bin/bash

This worked perfectly for me to create and start the mongodb set on docker containers. I can also connect to any of the servers using compass. But when I tried to open a connection from another server in the docker network (a php server), using php mongodb client, I got "Authentication failed" using this url:

mongodb://172.24.0.5:27017,172.24.0.3:27017,172.24.0.4:27017?replicaSet=dbrs

I am also sending my username and password, same that I am using in the compass connection url. The internal ips are correct, so that is not the problem.

So, basically, replicaset is up and running, I can connect from MongoDB Compass but I can't connect from my PHP code from a docker container in the same docker network.