sysctl.present

Ensures a kernel parameter is set to the desired value at runtime and optionally persisted across reboots.

Parameters

Parameter	Type	Default	Description
`name`	string	state ID	Sysctl key (e.g. `net.ipv4.ip_forward`)
`value`	string	—	Required. Desired value
`persist`	bool	`true`	Write to `/etc/sysctl.d/99-zester.conf`
`require`	list	—	Requisite states

net.ipv4.ip_forward:
  sysctl.present:
    - value: "1"
    - persist: true

vm.swappiness:
  sysctl.present:
    - value: "10"

Check: compares current runtime value via sysctl -n <key>.
Apply: sets via sysctl -w key=value; if persist=true, writes to /etc/sysctl.d/99-zester.conf (existing key replaced).
Revert: restores the original value captured before Apply.