Minor upgrade of Percona Server for MongoDB¶

If you are using data-at-rest-encryption, check the upgrade considerations for the KMIP server and for the Vault server

To upgrade Percona Server for MongoDB to the latest version, follow these steps:

Stop the mongod service:
```
$ sudo systemctl stop mongod
```
Install the latest version packages. Use the command relevant to your operating system.
Start the mongod service:
```
$ sudo systemctl start mongod
```

To upgrade a replica set or a sharded cluster, use the rolling restart method. It allows you to perform the upgrade with minimum downtime. You upgrade the nodes one by one, while the whole cluster / replica set remains operational.

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