Containerd custom shim support

[Vuk Vasic]

Containerd support also include Custom shim configuration so we can use Custom shims like gVisor.

[Tim Van Steenburgh (tvansteenburgh)]

Hi Vuk, thanks for your input. We do intend to do this, probably within the next six months.

[Joseph Borg (joeborg)]

Hi Vuk,

I've got a bundle here which will allow you to set custom shims using juju config (e.g. juju config containerd shim=gvisor):

description: A highly-available, production-grade Kubernetes cluster.
series: bionic
services:
  easyrsa:
    annotations:
      gui-x: '450'
      gui-y: '550'
    charm: cs:~containers/easyrsa
    constraints: root-disk=8G
    num_units: 1
  etcd:
    annotations:
      gui-x: '800'
      gui-y: '550'
    charm: cs:~containers/etcd
    constraints: root-disk=8G
    num_units: 3
    options:
      channel: 3.2/stable
  flannel:
    annotations:
      gui-x: '450'
      gui-y: '750'
    charm: cs:~containers/flannel
  kubeapi-load-balancer:
    annotations:
      gui-x: '450'
      gui-y: '250'
    charm: cs:~containers/kubeapi-load-balancer
    constraints: root-disk=8G
    expose: true
    num_units: 1
  kubernetes-master:
    annotations:
      gui-x: '800'
      gui-y: '850'
    charm: cs:~joeborg/kubernetes-master-18
    constraints: cores=2 mem=4G root-disk=16G
    num_units: 2
    options:
      channel: 1.12/stable
  kubernetes-worker:
    annotations:
      gui-x: '100'
      gui-y: '850'
    charm: cs:~joeborg/kubernetes-worker-36
    constraints: cores=4 mem=4G root-disk=16G
    expose: true
    num_units: 3
    options:
      channel: 1.12/stable
  containerd:
    charm: cs:~joeborg/containerd-24
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
- - containerd:containerd
  - kubernetes-worker:container-runtime
- - containerd:containerd
  - kubernetes-master:container-runtime

[Vuk Vasic (vukvasic)]

Hi Joseph,

Thanks, i will test chart and come back with the feedback

[Joseph Borg (joeborg)]

Thanks Vuk. Feel free to ask any questions you may have on #cdk8s on freenode or #cdk on the Kubernetes slack channel, if you'd like more of a fluent discussion.