plugin-kernel-param

The kernel-param multi-role state-provision verb for opencharly/charly — read a kernel sysctl value (CHECK) and render a sysctl -w write (ACT).

The verb is host-coupled on the sdk/kit contract (CheckVerbProvider + ProvisionActor), so it is compiled-in only.

An authored kernel-param: <key> step (scalar sugar) or kernel-param: {kernel-param: …, value: …} (map form). The kernel-param-exclusive fields live in the plugin's own #KernelParamInput (schema/kernel_param.cue); the matcher evaluation reuses the shared sdk.MatchAll.

The CHECK reads /proc/sys/<key-as-slashes> directly (equivalent to sysctl -n but needing no procps-ng, which minimal images omit). The ACT renders sysctl -w key=value (the act runs where procps-ng is present).

- check: the kernel reports Linux
  id: kernel-param-ostype
  kernel-param:
      kernel-param: kernel.ostype
      value:
          - Linux
  context: [runtime]

Compose the plugin candy in a box or check bed's candy: list:

- '@github.com/opencharly/plugin-kernel-param/candy/plugin-kernel-param:<tag>'

• candy/plugin-kernel-param/ — the plugin module: plugin.go, schema/kernel_param.cue (the self-contained #KernelParamInput), params/cue_types_gen.go, cmd/serve/main.go.
• candy/plugin-kernel-param/charly.yml — the plugin-kernel-param: candy entity.
• charly.yml — the root project manifest (discover: candy).
• .github/workflows/tag-on-merge.yml — CalVer tag + CHANGELOG/ on merge.

• Owning skill: /charly-check:check — the check verb catalog. This candy carries no skill: entity of its own; the gap is tracked in opencharly/opencharly#291.
• /charly-internals:plugin — the plugin/provider model, including the multi-role (check + act) provider.
• opencharly/charly — the charly CLI.