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At the end, the wizard will generate a deployment package with your unique settings. You will however need to key in the IP addresses of the servers you are deploying on. The wizard is very straightforward, and we would recommend you stick with the default values. The admin can visualise their shards and drill down into nodes using the web interface.ĬlusterControl also manages all the MongoDB nodes, and will restart any nodes that fail. ClusterControl collects monitoring data from all the various servers, and stores the data on a local monitoring database (cmondb). We also have a ClusterControl server, our on-premise tool to manage and monitor the MongoDB cluster.

mongod shard servers have their data directory in /var/lib/mongodb, and listens on port 27018.Config servers have their data directory in /var/lib/mongodb/config and listens on port 27019.They are self contained and will usually be run on each of your application servers. Mongo query routers ( mongos) - clients connect a mongos, which route queries to the appropriate shards.Writes to config servers use a two-phase commit to ensure atomic and replication transaction of the shard cluster's metadata".

As per documentation, "a production shard cluster will have three config server processes, each existing on a separate machine.

Three Config servers - these are mongod instances (started with -configsvr parameter) that store the meta data for the shards.

N number of shards, each shard consisting of 3 shard serves, the mongod instances (started with -shardsvr parameter).

Using the configurator, you can set up a MongoDB cluster with auto sharding and full failover support using replica sets. Each shard consists of a replica set, which provides automated failover and redundancy to ensure that data exists on at least 3 servers. Sharding allows MongoDB to handle distribution of data across a number of nodes to maximise use of disk space and dynamically load balance queries. Setting up a sharded cluster is not a trivial task, and this is probably the area where most users need help with. Today, we are glad to announce the availability of ClusterControl for MongoDB, which includes a MongoDB Configurator to easily deploy MongoDB Sharded Clusters, as well as on-premise monitoring and cluster management. A clear majority were interested in using other databases alongside MySQL, these included (in order of popularity) MongoDB, PostgreSQL, Cassandra, Hadoop, Redis. Last year, we did a survey asking our users about any other databases they were using alongside MySQL.