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Rolling Updates

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The rollingUpdate option expects the Kubernetes configuration for rolling updates.

rollingUpdate:
  enabled: true
  maxSurge: "100%"
  maxUnavailable: "50%"

For Deployments​

The following fields are supported for Deployments (none of the containers mounts any persistent volumes):

  • enabled
  • maxSurge
  • maxUnavailable

Example: Enabling Rolling Updates for Deployments​

containers:
- image: john/appbackend
rollingUpdate:
  enabled: true
  maxSurge: "100%"
  maxUnavailable: "50%"

enabled​

The enabled option expects a boolean and defines if rolling updates should be enabled or disabled.

Default Value For enabled​

enabled: true
info

If enabled = false, the Kubernetes rolling update type will be set to Recreate instead of RollingUpdate (default).

maxSurge​

The maxSurge option expects a string defining a percentage of pods that can be created above the desired number of replicas.

Default Value For maxSurge​

maxSurge: "25%"

maxUnavailable​

The maxUnavailable option expects a string defining a percentage of pods that can be unavailable during an update.

Default Value For maxUnavailable​

maxUnavailable: "0%"

For StateFulSets​

The following fields are supported for StatefulSets (at least one of the containers mounts a persistent volume):

  • enabled
  • partition

enabled​

The enabled option expects a boolean and defines if rolling updates should be enabled or disabled.

Default Value For enabled​

enabled: true
info

If enabled = false, the Kubernetes rolling update type will be set to Recreate instead of RollingUpdate (default).

partition​

The partition option expects an integer that tells Kubernetes to only update pods with an ordinal number greater than or equal this value.

Default Value For partition​

partition: 0