mongodb replicaset host name change error

Question

I have a mongodb replicaset on ubuntu.. In replica set, hosts are defined as localhost. You can see ;

{
    \"_id\" : \"myrep\",
    \"version\" : 4,
    \"membe         


        

Answer 1

There is a cleaner way to do this:

use local
cfg = db.system.replset.findOne({_id:"replicaSetName"})
cfg.members[0].host="newHost:27017"
db.system.replset.update({_id:"replicaSetName"},cfg)

then restart mongo