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OneChart makes your applications highly available as long as you set the replicas more than 1.

replicas: 2

By default, OneChart sets two more flags if the replica count is higher than one:

  • PodDisruptionBudgets
  • and pod anti affinity

These two flags make sure that your application pods are spread across nodes and never placed on the same one.

Also, in case of node maintenance, it makes sure that nodes are drained in an order that leaves at least one instance running from your application.

You can turn them off by setting the following values to false:

podDisruptionBudgetEnabled: true
spreadAcrossNodes: true