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Currently the module is automatically included in all initrds, hostonly or generic. Leave it to the distro provided module to pull it in explicitly.
22 lines
1.3 KiB
Markdown
22 lines
1.3 KiB
Markdown
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nav_order: 10
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---
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# Distributor Notes
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{: .no_toc}
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1. TOC
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{:toc}
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## Dracut Module
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The distribution specific integration is responsible for ensuring that the ignition dracut module is included in the initramfs when necessary. This can be achieved by adding it as dependency of the dracut module containing the distribution integration, or by installing a dracut configuration file.
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## Kernel Arguments
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When Ignition is updating kernel arguments it will call out to a binary (defined in `internal/distro/distro.go` and overridable at build-time via overriding the `github.com/coreos/ignition/v2/internal/distro.kargsCmd` build flag). Ignition expects that the binary accepts `--should-exist` & `--should-not-exist` parameters. Should exist operations should append the argument if missing and should not exist should NOT fail if the argument is not present. The binary should also reboot the system if necessary.
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As an example of the binary implementation look at [`examples/ignition-kargs-helper`](https://github.com/coreos/ignition/blob/main/examples/ignition-kargs-helper).
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If your implementation of Ignition doesn't intend to ship kargs functionality the [`ignition-kargs.service` unit](https://github.com/coreos/ignition/blob/main/dracut/30ignition/ignition-kargs.service) should be disabled.
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