Im trying to initialize my replica set sp that the primary node has a specific domain:port pairing. what I want is:


but what I get is:


This is the command I use to start the mongo instance:

sudo mongod --port 27022 --dbpath /db/config/data --configsvr --replSet config

This is what I use to access the mongo instance:

mongo --port 27022

I tried to modify my host file to add the domain name to the default domain of, but that didn't work. localhost vagrant-ubuntu-trusty-64
# The following lines are desirable for IPv6 capable hosts
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts

How do I get the specific "vagrant-ubuntu-trusty-64:27022" pairing when I initialize the mongo instance?

1 Answer 1


To add replica set members with hostname, pass the host name when initializing the replica set.

        _id: "config",
        version: 1,
        members: [
        {_id: 0, host: "vagrant-ubuntu-trusty-64:27022"}

_id --> is your replica set name

Or if you want to edit the existing configuration follow the below steps

var conf = rs.conf()



If you have more than one member in your replica set, all members should refer a hostname. Which means all members should be localhost or all members should be hostnames

  • it still gives me localhost:27022
    – tom dinh
    Mar 8, 2019 at 20:58
  • Are you saying, you are localhost after connecting to the database in mongo shell?
    – Mani
    Mar 8, 2019 at 20:59
  • once I initialize the mongodbi instance and access it, I do rs.initailize() and what I get is "me":"localhost:27022", but I want "me":"vagrant-ubuntu-trusty-64:27022"
    – tom dinh
    Mar 8, 2019 at 21:02
  • As I mentioned in my answer, x.x.x.x is the IP address of your VM.
    – Mani
    Mar 8, 2019 at 21:09

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