Hardware and system requirements

Server requirements

• Disk

  Approximately 1 GB of storage per monitored database node with data retention set to one week. By default, retention is 30 days.

  Tip

  Disable table statistics to decrease the VictoriaMetrics database size.

• Memory

  A minimum of 2 GB per monitored database node. The increase in memory usage is not proportional to the number of nodes. For example, data from 20 nodes should be easily handled with 16 GB.

• Architecture

  Your CPU must support the SSE4.2 instruction set, a requirement of ClickHouse, a third-party column-oriented database used by Query Analytics. If your CPU is lacking this instruction set you won’t be able to use Query Analytics.

Client requirements

• Disk

  A minimum of 100 MB of storage is required for installing the PMM Client package. With a good connection to PMM Server, additional storage is not required. However, the client needs to store any collected data that it cannot dispatch immediately, so additional storage may be required if the connection is unstable or the throughput is low. VMagent uses 1 GB of disk space for cache during a network outage. QAN, on the other hand, uses RAM to store cache.

• Operating system

  PMM Client runs on any modern 64-bit Linux distribution. It is tested on supported versions of Debian, Ubuntu, CentOS, and Red Hat Enterprise Linux. (See Percona software support life cycle).

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