Mahmoudi, Ahmad (am495p) c302a083a6 Upgrade k8s from v1.17.3 to v1.18.6

This ps makes following changes to upgrade kubernetes from v1.17.3
to v1.18.6.
  - Updated all references to k8s images to 1.18.6
  - Updated command options and api object and versions based on
    k8s 1.18 release notes:
      https://kubernetes.io/docs/setup/release/notes/
  - Uplifted uwsgi to 2.0.19.1 to align with other airship
    components, and to bring in fixes and improvements.
  - Added build-essentials and python3-dev packages to pass the zull
    gate, which was looking for a c compiler.

Change-Id: I1160d1e6e2f02a0524043641b9296ea39edb301e

2020-08-19 15:56:45 +00:00

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Genesis

Specific configuration for the genesis process. This document is a strict superset of the combination of kubernetes-node and host-system, so only differences are discussed here.

Sample Document

Here is a complete sample document:

schema: promenade/Genesis/v1
metadata:
  schema: metadata/Document/v1
  name: genesis
  layeringDefinition:
    abstract: false
    layer: site
data:
  hostname: n0
  ip: 192.168.77.10
  armada:
    target_manifest: cluster-bootstrap
    metrics:
      output_dir: /var/log/armada/metrics
      max_attempts: 5
  tiller:
    listen: 24134
    probe_listen: 24135
    storage: secret
  labels:
    static:
      - calico-etcd=enabled
      - node-role.kubernetes.io/master=
    dynamic:
      - kubernetes-apiserver=enabled
      - kubernetes-controller-manager=enabled
      - kubernetes-etcd=enabled
      - kubernetes-scheduler=enabled
      - promenade-genesis=enabled
      - ucp-control-plane=enabled
  images:
    armada: quay.io/airshipit/armada:latest
    helm:
      tiller: gcr.io/kubernetes-helm/tiller:v2.16.1
    kubernetes:
      apiserver: gcr.io/google_containers/hyperkube-amd64:v1.18.6
      controller-manager: gcr.io/google_containers/hyperkube-amd64:v1.18.6
      etcd: quay.io/coreos/etcd:v3.4.2
      scheduler: gcr.io/google_containers/hyperkube-amd64:v1.18.6
  files:
    - path: /var/lib/anchor/calico-etcd-bootstrap
      content: ""
      mode: 0644

Armada

Configuration options for bootstrapping with Armada.

keyword	type	action
target_manifest	string	Specifies the `armada/Manifest/v1` to use during Genesis.
metrics	object	See Metrics.

Metrics

Configuration for Armada bootstrap metric collection.

keyword	type	action
output_dir	string	(optional, default /var/log/node-exporter-textfiles) The directory path in which to output Armada metric data.
max_attempts	integer	(optional, default 10) The maximum Armada attempts to collect metrics for. Can be set to 0 to disable metrics collection.

Tiller

Configuration options for bootstrapping with Tiller.

keyword	type	action
storage	string	(optional, not passed by default) The tiller storage arg to use. `
listen	integer	(optional, default 24134) The tiller listen arg to use. See Ports.
probe_listen	integer	(optional, default 24135) The tiller probe_listen arg to use. See Ports.

Ports

By default, promenade uses tiller ports outside of net.ipv4.ip_local_port_range to avoid conflicts with apiserver connections to etcd, see example.

The listen and probe_listen parameters allow setting these back to the upstream tiller defaults (or any other value) if desired.

Bootstrapping Images

Bootstrapping images are specified in the top level key images:

armada: <Armada image for bootstrapping>
helm:
  tiller: <Tiller image for bootstrapping>
kubernetes:
  apiserver: <API server image for bootstrapping>
  controller-manager: <Controller Manager image for bootstrapping>
  etcd: <etcd image for bootstrapping>
  scheduler: <Scheduler image for bootstrapping>

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