METAL 93dmk8s - persistent kubernetes device-maps

This module deploys an ephemeral disk to be used by kubernetes containers:

• /run/containerd partition
• /var/lib/kubelet partition
• /var/lib/containerd partition

Table of Contents

• Parameters
  • Customizable Parameters
    • FSLabel Parameters
      • metal.disk.conrun
      • metal.disk.conlib
      • metal.disk.k8slet
    • Partition Size Parameters
      • metal.disk.conrun.size
      • metal.disk.conlib.size
      • metal.disk.k8slet.size
  • Required Parameters
  • metal.server

Parameters

The unit of size varies per-parameter; pay attention to avoid undesirable partition tables

Customizable Parameters

FSLabel Parameters

The FS labels can be changed from their default values. This may be desirable for cases when another LVM is being re-used.

metal.disk.conrun

FSLabel for the /run/containerd.

• Default: CONRUN

metal.disk.conlib

FSLabel for the /var/lib/containerd.

• Default: CONLIB

metal.disk.k8slet

FSLabel for the /var/lib/kubelet.

• Default: K8SLET

Partition Size Parameters

metal.disk.conrun.size

Size of the /run/containerd partition, measured in gigabytes (GB):

• Default: 75
• Min: 10
• Max: 150

metal.disk.conlib.size

Size of the /var/lib/containerd partition, measured in percentage (%):

• Default: 40
• Min: 10
• Max: 45

metal.disk.k8slet.size

Size of the /var/lib/kubelet partition, measured in percentage (%):

• Default: 10
• Min: 10
• Max: 45

Required Parameters

The following parameters are required for this module to work, however they belong to the native dracut space.

See module-setup.sh for the full list of module and driver dependencies.

metal.server

Enable or disable this module. This parameter has no other effect on 93dmk8s other than indicating that the active node is currently (re)building and requires partitions. This module depends on 90metalmdsquash, that module entails filling in the metal.server parameter.