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Upgrade to MongoDB Enterprise (Replica Set)

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MongoDB Enterprise provides various features not available in the MongoDB Community edition, such as:

The following steps outline the procedure to upgrade a replica set from the MongoDB Community Edition to the MongoDB Enterprise Edition. For example, the steps can be used to upgrade MongoDB 4.0 Community to MongoDB 4.0 Enterprise.

Consideration

Warning

Do not use these instructions to upgrade to another release version. To upgrade release versions, refer to the appropriate release upgrade instructions, such as Upgrade to MongoDB 4.2.

Download Enterprise Binaries

Depending on your operating system, you can install the MongoDB Enterprise binaries by using a package manager or by downloading the binaries manually.

If you have installed MongoDB Community using a package manager, follow the package manager instructions for your operating system:

During the installation, the package manager will remove the community packages; this will not affect the running deployment until you restart.

If you have not installed MongoDB using a package manager, you can manually download the MongoDB binaries from the MongoDB Download Center. Follow the manual instructions, including specific prerequisites for MongoDB Enterprise, for your operating system:

Important

Install to a location different from that of your current Community edition.

In the upgrade procedure, you will use the existing data directory and, if applicable, the existing configuration file.

Important

You cannot use the .msi to install the Enterprise edition if you have the Community edition of the same release series installed on the same machine. That is, if you have version 4.4.0 Community edition installed, you cannot use the .msi to install the 4.4.0 or 4.4.1 Enterprise edition.

  1. Manually download the archive file from the MongoDB Download Center.

  2. To install, extract/unzip the file to a location different from that of your current Community edition.
    In the upgrade procedure, you will use the existing data directory and, if applicable, the existing configuration file.

Install the binaries:

  1. Manually download the archive file from the MongoDB Download Center.

  2. Extract the files to a location different from that of your current Community edition. For details on extracting the files, see macOS.
    In the upgrade procedure, you will use the existing data directory and, if applicable, the existing configuration file.

Procedure

To minimize downtime, you can upgrade from MongoDB Community to Enterprise Edition using a “rolling” upgrade by upgrading the members individually while the other members are available.

1

Upgrade secondary members of the replica set.

Upgrade the secondary members of the replica set one at a time:

  1. Shut down the mongod instance.
  2. Restart with the Enterprise mongod, specifying the same configuration options (e.g. same data directory, configuration file, etc.).

Wait for the member to recover to SECONDARY state before upgrading the next secondary member.

2

Step down the replica set primary.

Once all the secondary members have been upgraded to Enterprise, connect a mongo shell to the primary and use rs.stepDown() to step down the primary and force an election of a new primary.

3

Upgrade the primary.

When rs.status() shows that the primary has stepped down and another member has assumed PRIMARY state, upgrade the stepped-down primary:

  1. Shut down the stepped-down primary.
  2. Restart with the Enterprise mongod, specifying the same configuration options (e.g. same data directory, configuration file, etc.).

Important

Before using any Enterprise features, ensure that all members have been upgraded to Enterprise edition.

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