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Clustering System Requirements

The following are system requirements for the parent node and child nodes. These estimations assume that the KB and audit trail settings are disabled. If those settings are enabled, the size required can significantly increase.

Parent Node (Nessus Manager with clustering enabled)

Note: The amount of disk space needed depends on how many agent scan results are kept and for how long. For example, if you run a single 5000 agent scan result once per day and keep scan results for 7 days, the estimated disk space used is 35 GB. The disk space required per scan result varies based on the consistency, number, and types of vulnerabilities detected.

  • Disk: Estimated minimum of 5 GB per 5000 agents per scan per day
  • CPU: 2 cores
  • RAM: 8 GB

Child Node (Nessus managed by Nessus Manager parent node)

Note: Disk space is used to temporarily store agent scan results, both individual and combined, before uploading the results to the parent node.

Child node with 0-10,000 agents:

  • Disk: Estimated minimum of 5 GB per 5000 agents per concurrent scan.
  • CPU: 2 cores
  • RAM: 8 GB

Child node with 10,000-20,000 agents:

A child node can support a maximum of 20,000 agents.

  • Disk: Estimated minimum of 5 GB per 5000 agents per concurrent scan.
  • CPU: 4 cores
  • RAM: 16 GB

Agents

  • Linked agents must be on software version 7.4.0 or later.

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