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MongoDB

About

Use this component to deploy a MongoDB with replication and create MongoDB users.

How to use

How to deploy a sinple MongoDB?

  • Put the component MongoDBPrimary on a compute node.

How to deploy a MongoDB cluster?

  • To enable replication, select MongoDBPrimary and specify the replication set name in the property replication_replset (e.g., rs0).
  • Put the component MongoDBSecondary on a compute node.
  • Connect MongoDBSecondary to MongoDBPrimary using the join_primary relationship.

Fig. MongoDB Cluster

  • Create a security group (e.g., sgMongo) to allow incoming traffic to port 27017 and assign it to the compute nodes.

Fig. MongoDB Cluster

Expected result: MongoDBPrimary is created first and init the relication set rs0. When MongoDBSecondary is up, it will join the replication set. In particular, MongoDBSecondary connects to the private IP address of MongoDBPrimary on port 27017 and registers its private IP address to the relication set.

How to deploy a MongoDB cluster with keyfile authentication

  • Generate a keyfile content with the command openssl rand -base64 741.
  • Select MongoDBPrimary and enable the property security_authorization.
  • Specify the property replication_keyfile_content with the generated keyfile content.

Expected result: The keyfile is created at /etc/mongodb-keyfile on each MongoDB instances for inter-authentication.

How to create MongoDB users?

  • Select MongoDBPrimary and enable the property security_authorization.
  • Specify the property root_admin_name / root_admin_password to create the root user (TODO use get_secret to specify a secret).
  • (Optional) specify the property mongodb_users to create normal users with a given role in a given database.

Fig. MongoDB Cluster

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