Database Reference
In-Depth Information
Adding a new member
After creating the
master
node or the
primary
node, you can add other members, in-
cluding secondaries and arbiters to it.
So far, we have configured
mongod1.replicaset.com
, and now we should add
mongod2.replicaset.com
and
mongo3.replicaset.com
to the primary ma-
chine. This process is listed in the following steps:
1. Adding a new member to an existing replica set is as easy as calling the following
command in the
mongo
shell:
rs.add("mongod2.replicaset.com")
2. Before running the preceding command in the first machine, you should make sure
that you have already copied the MongoDB configuration file. It's recommended
that you stop the current running
mongod
, copy the configuration file to the target
machine (or make it again), and then start
mongod
using the
--config
paramet-
er again.
3. After issuing the preceding command, you should see the result in the
mongo
shell
as shown in the following screenshot:
4. You can simply execute the
rs.status()
command to see the whole replica set
status each time. The following screenshot shows the status of our replica set net-
work at this step:
