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Percona Software for MongoDB Documentation

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System requirements

  • At least 1GB RAM is required on every node for pbm-agents to operate successfully.
  • At least 2 logical CPU cores are recommended to reduce the 100% CPU saturation risk during backup, restore, or compression operations.

  • All pbm-agents in the cluster must be able to connect to all config server replica set nodes that could become a new primary. In non-sharded replica set deployments, this means connecting to all the nodes that could become a new primary node. To become a primary, a node must meet the following criteria:

    • have priority greater than 0 and must be able to vote (votes: 1)
    • is not an arbiter (arbiterOnly: false)
    • is not hidden (hidden: false)
    • is not delayed

  • All pbm-agents in your deployment must be able to connect to the same remote backup storage using the same credentials.

  • For backups to be successful, all pbm-agents and PBM CLI must be the same version. Otherwise, we cannot guarantee successful backups and data consistency.

Note that networking issues like connection to the remote backup storage can also affect PBM performance.

Last update: April 16, 2025
Created: April 16, 2025