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For context, the cloud provider I'm using for this project is MaaS. I'm not sure if that will have any bearing on the answers to my question, but if that is important context, please answer under the maas context.

I'm brand new to juju. The canonical-kubernetes is the charm I'm using. I'd like to customize the bundle for our particular need.

https://docs.jujucharms.com/2.5/en/reference-bundle is great! The top of the document states: This reference page applies to non-Kubernetes bundles only and that reference document has seemingly no help to me for the bundle.yaml I'm working on.

1. What is the difference between a "normal" bundle deployment vs a "kubernetes" bundle deployment?


2. The canonical-kubernetes deployment is deploying machines but the yaml manifests places the resources under the services object. There are seemingly no document references on this difference.


3. I'm specifically looking for how to do things like tag machines, run cloud-init on a per-machine basis, and other various machine things.

The googs got me this link https://pythonhosted.org/juju-deployer/config.html but I don't think that's accurate for me needs either.

I gleened cloud-init methodologies from https://discourse.jujucharms.com/t/using-model-config-key-cloudinit-userdata/512

and I am pretty sure I didn't do that right because the documentation says it's supposed to be a manifest that's included and it doesn't work when run. But I really need this capability.

I've also opened issues:

https://github.com/juju-solutions/bundle-canonical-kubernetes

https://github.com/juju/docs

series: bionic

description: A highly-available, production-grade Kubernetes cluster.

services:

  easyrsa:

    annotations:

      gui-x: '450'

      gui-y: '550'

    charm: cs:~containers/easyrsa-231

    constraints: root-disk=8G

    num_units: 1

    machine:

      tags:

        - easyrsa

    resources:

      easyrsa: 5

  etcd:

    annotations:

      gui-x: '800'

      gui-y: '550'

    charm: cs:~containers/etcd-411

    constraints: root-disk=8G

    num_units: 3

    options:

      channel: 3.2/stable

    machine:

      tags:

        - etcd

    resources:

      etcd: 3

      snapshot: 0

  flannel:

    annotations:

      gui-x: '450'

      gui-y: '750'

    charm: cs:~containers/flannel-398

    resources:

      flannel-amd64: 108

      flannel-arm64: 108

      flannel-s390x: 94

  kubeapi-load-balancer:

    annotations:

      gui-x: '450'

      gui-y: '250'

    charm: cs:~containers/kubeapi-load-balancer-617

    constraints: root-disk=8G

    expose: true

    num_units: 1

    machine:

      tags:

        - kubeapi-lb

    resources: {}

  kubernetes-master:

    annotations:

      gui-x: '800'

      gui-y: '850'

    charm: cs:~containers/kubernetes-master-642

    constraints: cores=2 mem=4G root-disk=16G

    num_units: 2

    options:

      channel: 1.14/stable

    series: xenial

    machine:

      tags:

        - kubernetes master

    resources:

      cdk-addons: 0

      kube-apiserver: 0

      kube-controller-manager: 0

      kube-proxy: 0

      kube-scheduler: 0

      kubectl: 0

    cloudinit-userdata: |

      runcmd: |

        #!/bin/bash

        <SCRIPT THINGS>

  kubernetes-worker:

    annotations:

      gui-x: '100'

      gui-y: '850'

    charm: cs:~containers/kubernetes-worker-508

    constraints: cores=4 mem=4G root-disk=16G

    expose: true

    num_units: 3

    options:

      channel: 1.14/stable

    series: xenial

    machine:

      tags:

        - kubernetes worker

    resources:

      cni-amd64: 118

      cni-arm64: 110

      cni-s390x: 115

      kube-proxy: 0

      kubectl: 0

      kubelet: 0

  nfs-server:

    num_units: 1

    storage_root: /nfsvol

    expose: true

    charm: cs:nfs-9

    constraints: cores=2 mem=4G

    machine:

      tags:

        - nfs server

envExport:

  services:

    easyrsa:

      to: 0

    etcd:

      to: 1

    kubernetes-master:

      to: 2

    kubernetes-worker:

      to: 3

    kubeapi-load-balancer:

      to: 4

    nfs-server:

      to: 5

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

- - nfs-server:nfs

  - kubernetes-worker:nfs

- - 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