Mastering MongoDB 4.x - Second Edition

Creating a replica set

Starting a MongoDB server as a part of a replica set is as easy as setting it in the configuration via the command line:

> mongod --replSet "xmr_cluster"

This is fine for development purposes. For production environments, it's recommended that we use a configuration file instead:

> mongod --config <path-to-config>

Here, the <path-to-config> can be as follows:

/etc/mongod.conf

This configuration file has to be in a YAML format.

YAML does not support tabs. Convert tabs to spaces by using your editor of choice.

A simple configuration file sample is as follows:

systemLog:  destination: file  path: "/var/log/mongodb/mongod.log"  logAppend: truestorage:  journal:     enabled: trueprocessManagement:  fork: truenet: bindIp: 127.0.0.1 ...