Class: Google::Apis::ContainerV1beta1::UpgradeSettings

Inherits:
Object
  • Object
show all
Includes:
Google::Apis::Core::Hashable, Google::Apis::Core::JsonObjectSupport
Defined in:
generated/google/apis/container_v1beta1/classes.rb,
generated/google/apis/container_v1beta1/representations.rb,
generated/google/apis/container_v1beta1/representations.rb

Overview

These upgrade settings control the level of parallelism and the level of disruption caused by an upgrade. maxUnavailable controls the number of nodes that can be simultaneously unavailable. maxSurge controls the number of additional nodes that can be added to the node pool temporarily for the time of the upgrade to increase the number of available nodes. (maxUnavailable + maxSurge) determines the level of parallelism (how many nodes are being upgraded at the same time). Note: upgrades inevitably introduce some disruption since workloads need to be moved from old nodes to new, upgraded ones. Even if maxUnavailable=0, this holds true. (Disruption stays within the limits of PodDisruptionBudget, if it is configured.) Consider a hypothetical node pool with 5 nodes having maxSurge=2, maxUnavailable=1. This means the upgrade process upgrades 3 nodes simultaneously. It creates 2 additional (upgraded) nodes, then it brings down 3 old (not yet upgraded) nodes at the same time. This ensures that there are always at least 4 nodes available.

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Google::Apis::Core::JsonObjectSupport

#to_json

Methods included from Google::Apis::Core::Hashable

process_value, #to_h

Constructor Details

#initialize(**args) ⇒ UpgradeSettings

Returns a new instance of UpgradeSettings.



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# File 'generated/google/apis/container_v1beta1/classes.rb', line 4628

def initialize(**args)
   update!(**args)
end

Instance Attribute Details

#max_surgeFixnum

The maximum number of nodes that can be created beyond the current size of the node pool during the upgrade process. Corresponds to the JSON property maxSurge

Returns:

  • (Fixnum)


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# File 'generated/google/apis/container_v1beta1/classes.rb', line 4619

def max_surge
  @max_surge
end

#max_unavailableFixnum

The maximum number of nodes that can be simultaneously unavailable during the upgrade process. A node is considered available if its status is Ready. Corresponds to the JSON property maxUnavailable

Returns:

  • (Fixnum)


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# File 'generated/google/apis/container_v1beta1/classes.rb', line 4626

def max_unavailable
  @max_unavailable
end

Instance Method Details

#update!(**args) ⇒ Object

Update properties of this object



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# File 'generated/google/apis/container_v1beta1/classes.rb', line 4633

def update!(**args)
  @max_surge = args[:max_surge] if args.key?(:max_surge)
  @max_unavailable = args[:max_unavailable] if args.key?(:max_unavailable)
end