Add Secondary replica set in the same machine?

问题:

I'm new at mongodb so this replication is kinda confusing for me. I follow the tutorial here. I have set up 2 mongod instance in my machine:

localhost:27018 localhost:27019 

with this command:

mongod --dbpath /home/db2 --port 27019 --replSet "rs1" mongod --dbpath /data/db1 --port 27018 --replSet "rs1" 

When I try to connect and set up replication using this set of command

mongo --port 27019 rs1:PRIMARY> rs.add("localhost:27018") 

It always says:

{ "ok" : 0, "errmsg" : "Either all host names in a replica set configuration must be localhost references, or none must be; found 1 out of 2", "code" : 103 } 

Any help, please ?

回答1:

It would be better if you choose the machine name (available in terminal right after your username like user01@10gen.local) instead of localhost,

Like rs1:PRIMARY> rs.add("10gen.local:27018")

as the best practice always use a logical name to define the replicaset.

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