Is it necessary to disable swap file?

zeqk · October 7, 2020, 3:52pm

We are using https://github.com/getsentry/onpremise for run a production instance of Sentry

Clickhouse Requeriments https://clickhouse.tech/docs/en/operations/requirements/ says:

Disable the swap file for production environments

Does this mean that I should disable the swap file in our server?

How could this affect other sentry services?

Thank you!

BYK · October 12, 2020, 10:12am

Hi,

We don’t have any recommendations around how you configure your system so feel free to try disabling it or leaving it on. Know that Clickhouse is a memory-hungry application and we now limit it to 30% of the available memory on the host:

github.com

getsentry/onpremise/blob/a9a8b2f98b84bc1de94884dd3226ef3d7d77b29f/docker-compose.yml#L122


    - 'sentry-clickhouse:/var/lib/clickhouse'
    - 'sentry-clickhouse-log:/var/log/clickhouse-server'
    - type: bind
      read_only: true
      source: ./clickhouse/config.xml
      target: /etc/clickhouse-server/config.d/sentry.xml
  environment:
    # This limits Clickhouse's memory to 30% of the host memory
    # If you have high volume and your search return incomplete results
    # You might want to change this to a higher value (and ensure your host has enough memory)
    MAX_MEMORY_USAGE_RATIO: 0.3
snuba-api:
  << : *snuba_defaults
# Kafka consumer responsible for feeding events into Clickhouse
snuba-consumer:
  << : *snuba_defaults
  command: consumer --storage events --auto-offset-reset=latest --max-batch-time-ms 750
# Kafka consumer responsible for feeding outcomes into Clickhouse
# Use --auto-offset-reset=earliest to recover up to 7 days of TSDB data
# since we did not do a proper migration
snuba-outcomes-consumer:

zeqk · October 13, 2020, 9:13pm

Thank you for the response! We will try it