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HostSystem

Sample Document

schema: promenade/HostSystem/v1
metadata:
  schema: metadata/Document/v1
  name: host-system
  layeringDefinition:
    abstract: false
    layer: site
data:
  files:
    - path: /opt/kubernetes/bin/kubelet
      tar_url: https://dl.k8s.io/v1.11.6/kubernetes-node-linux-amd64.tar.gz
      tar_path: kubernetes/node/bin/kubelet
      mode: 0555
  images:
    haproxy: haproxy:1.8.3
    helm:
      helm: lachlanevenson/k8s-helm:v2.13.1
    kubernetes:
      kubectl: gcr.io/google_containers/hyperkube-amd64:v1.11.6
  packages:
    repositories:
      - deb http://apt.dockerproject.org/repo ubuntu-xenial main
    keys:
      - |-
        -----BEGIN PGP PUBLIC KEY BLOCK-----

        mQINBFWln24BEADrBl5p99uKh8+rpvqJ48u4eTtjeXAWbslJotmC/CakbNSqOb9o
        ddfzRvGVeJVERt/Q/mlvEqgnyTQy+e6oEYN2Y2kqXceUhXagThnqCoxcEJ3+KM4R
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        TvBR8Q==
        =Fm3p
        -----END PGP PUBLIC KEY BLOCK-----
    additional:
      - curl
      - jq
    required:
      docker: docker-engine=1.13.1-0~ubuntu-xenial
      socat: socat=1.7.3.1-1

Files

A list of files to be written to the host. Files can be given as precise content or extracted from a tarball specified by url:

- path: /etc/direct-content
  content: |-
    This
    exact
    text
- path: /etc/from-tar
  tar_url: http://example.com/file
  tar_source: dir/file.txt

Images

Core Images

These images are used for essential functionality:

haproxy: HAProxy is configured and used for Kubernetes API discovery during bootstrapping.
kubectl: Used for label application and validation tasks during bootstrapping.

Convenience Images

The helm image is available for convenience.

Packages

Repository Configuration

Additional APT repositories can be configured using the repositories and keys fields of the SystemPackages document:

repositories: A list of APT source lines to be configured during genesis or join.
keys: A list of public PGP keys that can be used to verify installed packages.

Package Configuration

The required key specifies packages that are required for all deployments, and the additional key allows arbitrary additional system packages to be installed. The additional key is particularly useful for installing packages such as ceph-common.

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