Kubernetes vs. non-Kubernetes bundles
Contents:
Non-Kubernetes bundles
A non-Kubernetes bundle, for example, the kubernetes-core bundle, looks as follows:
description: A minimal two-machine Kubernetes cluster, appropriate for development.
series: bionic
machines:
'0':
constraints: cores=2 mem=4G root-disk=16G
series: bionic
'1':
constraints: cores=4 mem=4G root-disk=16G
series: bionic
applications:
containerd:
annotations:
gui-x: '475'
gui-y: '800'
charm: cs:~containers/containerd-53
resources: {}
easyrsa:
annotations:
gui-x: '90'
gui-y: '420'
charm: cs:~containers/easyrsa-295
num_units: 1
resources:
easyrsa: 5
to:
- lxd:0
etcd:
annotations:
gui-x: '800'
gui-y: '420'
charm: cs:~containers/etcd-485
num_units: 1
options:
channel: 3.3/stable
resources:
core: 0
etcd: 3
snapshot: 0
to:
- '0'
flannel:
annotations:
gui-x: '475'
gui-y: '605'
charm: cs:~containers/flannel-466
resources:
flannel-amd64: 537
flannel-arm64: 534
flannel-s390x: 521
kubernetes-master:
annotations:
gui-x: '800'
gui-y: '850'
charm: cs:~containers/kubernetes-master-788
constraints: cores=2 mem=4G root-disk=16G
expose: true
num_units: 1
options:
channel: 1.17/stable
resources:
cdk-addons: 0
core: 0
kube-apiserver: 0
kube-controller-manager: 0
kube-proxy: 0
kube-scheduler: 0
kubectl: 0
to:
- '0'
kubernetes-worker:
annotations:
gui-x: '90'
gui-y: '850'
charm: cs:~containers/kubernetes-worker-623
constraints: cores=4 mem=4G root-disk=16G
expose: true
num_units: 1
options:
channel: 1.17/stable
resources:
cni-amd64: 538
cni-arm64: 529
cni-s390x: 541
core: 0
kube-proxy: 0
kubectl: 0
kubelet: 0
to:
- '1'
relations:
- - kubernetes-master:kube-api-endpoint
- kubernetes-worker:kube-api-endpoint
- - kubernetes-master:kube-control
- kubernetes-worker:kube-control
- - kubernetes-master:certificates
- easyrsa:client
- - kubernetes-master:etcd
- etcd:db
- - kubernetes-worker:certificates
- easyrsa:client
- - etcd: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
Kubernetes bundles
A Kubernetes bundle differs from a standard bundle in the following ways:
- key ‘bundle’ is given the value of ‘kubernetes’
- key ‘num_units’ is replaced by key ‘scale’
- key ‘to’ is replaced by key ‘placement’
The value of ‘placement’ is a key=value pair and is used as a Kubernetes node selector.
For example:
bundle: kubernetes
applications:
mariadb:
charm: cs:~juju/mariadb-k8s
scale: 2
constraints: mem=1G
options:
dataset-size: 70%
storage:
database: mariadb-pv,20M
gitlab:
charm: cs:~juju/gitlab-k8s
placement: foo=bar
scale: 1
relations:
- - gitlab:mysql
- mariadb:server
Last updated 7 months ago.