cdk-ha

gistfile1.txt

series: xenial
description: A nine-machine Kubernetes cluster, appropriate for production. Includes a three-machine etcd cluster and three Kubernetes worker nodes.
constraints: cores=8 mem=16G
machines:
  0:
  1:
  2:
  3:
  4:
  5:
  6:
  7:
  8:
  9:
services:
  easyrsa:
    annotations:
      gui-x: '450'
      gui-y: '550'
    charm: cs:~containers/easyrsa-40
    num_units: 1
    to:
      - 'kubernetes-master'
  etcd:
    annotations:
      gui-x: '800'
      gui-y: '550'
    charm: cs:~containers/etcd-80
    num_units: 3
    to:
      - '2'
      - '3'
      - '4'
  flannel:
    annotations:
      gui-x: '450'
      gui-y: '750'
    charm: cs:~containers/flannel-56
    options:
      cidr: '172.19.0.0/16'
  kubeapi-load-balancer:
    annotations:
      gui-x: '450'
      gui-y: '250'
    charm: cs:~containers/kubeapi-load-balancer-58
    expose: true
    num_units: 1
    to:
      - '6'
  kubernetes-master:
    annotations:
      gui-x: '800'
      gui-y: '850'
    charm: cs:~containers/kubernetes-master-104
    num_units: 2
    to:
      - '0'
      - '1'
    options:
      channel: 1.10/stable
      service-cidr: '172.18.0.0/16'
  kubernetes-worker:
    annotations:
      gui-x: '100'
      gui-y: '850'
    charm: cs:~containers/kubernetes-worker-118
    constraints: cores=4 mem=4G
    expose: true
    num_units: 3
    options:
      channel: 1.10/stable
    to:
      - '7'
      - '8'
      - '9'
  ### Monitoring ###
  grafana:
    charm: cs:xenial/grafana-7
    num_units: 1
    expose: true
    to:
      - '5'
  prometheus:
    charm: cs:xenial/prometheus-5
    num_units: 1
    to:
      - '5'
  telegraf:
    charm: cs:xenial/telegraf-9
  apache2:
    charm: cs:xenial/apache2-24
    num_units: 1
    expose: true
    options:
      enable_modules: "headers proxy_html proxy_http"
  elasticsearch:
    charm: cs:xenial/elasticsearch-26
    num_units: 1
  filebeat:
    charm: cs:xenial/filebeat-12
    options:
      logpath: '/var/log/*.log'
      kube_logs: True
  graylog:
    charm: cs:xenial/graylog-12
    num_units: 1
  mongodb:
    charm: cs:xenial/mongodb-46
    num_units: 1
relations:
- - kubernetes-master:kube-api-endpoint
  - kubeapi-load-balancer:apiserver
- - kubernetes-master:loadbalancer
  - kubeapi-load-balancer:loadbalancer
- - kubernetes-master:kube-control
  - kubernetes-worker:kube-control
- - kubernetes-master:certificates
  - easyrsa:client
- - etcd:certificates
  - easyrsa:client
- - kubernetes-master:etcd
  - etcd:db
- - kubernetes-worker:certificates
  - easyrsa:client
- - kubernetes-worker:kube-api-endpoint
  - kubeapi-load-balancer:website
- - kubeapi-load-balancer:certificates
  - easyrsa:client
- - flannel:etcd
  - etcd:db
- - flannel:cni
  - kubernetes-master:cni
- - flannel:cni
  - kubernetes-worker:cni
- - prometheus:grafana-source
  - grafana:grafana-source
- - telegraf:prometheus-client
  - prometheus:target
- - kubernetes-master:juju-info
  - telegraf:juju-info
- - kubernetes-worker:juju-info
  - telegraf:juju-info
- - apache2:reverseproxy
  - graylog:website
- - graylog:elasticsearch
  - elasticsearch:client
- - graylog:mongodb
  - mongodb:database
- - filebeat:beats-host
  - kubernetes-master:juju-info
- - filebeat:beats-host
  - kubernetes-worker:juju-info
- - filebeat:logstash
  - graylog:beats