Class: Google::Apis::ContainerV1beta1::UpgradeSettings
- Inherits:
-
Object
- Object
- Google::Apis::ContainerV1beta1::UpgradeSettings
- 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
-
#max_surge ⇒ Fixnum
The maximum number of nodes that can be created beyond the current size of the node pool during the upgrade process.
-
#max_unavailable ⇒ Fixnum
The maximum number of nodes that can be simultaneously unavailable during the upgrade process.
Instance Method Summary collapse
-
#initialize(**args) ⇒ UpgradeSettings
constructor
A new instance of UpgradeSettings.
-
#update!(**args) ⇒ Object
Update properties of this object.
Methods included from Google::Apis::Core::JsonObjectSupport
Methods included from Google::Apis::Core::Hashable
Constructor Details
#initialize(**args) ⇒ UpgradeSettings
Returns a new instance of UpgradeSettings.
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# File 'generated/google/apis/container_v1beta1/classes.rb', line 4594 def initialize(**args) update!(**args) end |
Instance Attribute Details
#max_surge ⇒ Fixnum
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
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# File 'generated/google/apis/container_v1beta1/classes.rb', line 4585 def max_surge @max_surge end |
#max_unavailable ⇒ Fixnum
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
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# File 'generated/google/apis/container_v1beta1/classes.rb', line 4592 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 4599 def update!(**args) @max_surge = args[:max_surge] if args.key?(:max_surge) @max_unavailable = args[:max_unavailable] if args.key?(:max_unavailable) end |