# tunable.tunable_type_choices

Retrieve the supported tunable types that can be changed.

Type: object

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Type: array
No Additional Items

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#### TunableTunableTypeChoices

Type: object

Available tunable types with their identifiers.

No Additional Properties

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#### Sysctl

Type: const

System control parameters that affect kernel behavior.

Specific value: `"SYSCTL"`

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#### Udev

Type: const

Device management rules for hardware detection and configuration.

Specific value: `"UDEV"`

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#### Zfs

Type: const

ZFS filesystem kernel module parameters.

Specific value: `"ZFS"`

Required roles: READONLY_ADMIN | SYSTEM_TUNABLE_READ