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Copyright 2019 Red Hat K.K.
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)
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https://qiita.com/capsmalt/items/496942c823f5cf0f307d
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Cloud Native Meetup Tokyo Cloud Native Developer JP
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https://openshift.connpass.com/
OpenShift UserGroup
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Copyright 2019 Red Hat K.K.
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?
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Today’s Agenda
1
2
3
Kubernetes Core
Why / What Operator
How to get Operator
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Copyright 2019 Red Hat K.K.
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Copyright 2019 Red Hat K.K.
)( (
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Copyright 2019 Red Hat K.K.
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Copyright 2019 Red Hat K.K.
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Copyright 2019 Red Hat K.K.
Cloud Infrastructure Resources
Hardware, Virtualization, Cloud and Service Provider Certifications
CI/CD Workload
Serverless
Workload
Machine Learning
Workload
IoT
Workload
Workload
Abstraction
Any
Applications
Resource
Abstraction
Any
Resources
Company
Core Value?
(*Not Kubernetes)
8 C
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Copyright 2019 Red Hat K.K.
https://www.cncf.io/projects/
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+ +
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Copyright 2019 Red Hat K.K.
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Copyright 2019 Red Hat K.K.
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Copyright 2019 Red Hat K.K.
Cloud Infrastructure Resources
Hardware, Virtualization, Cloud and Service Provider Certifications
CI/CD Workload
Serverless
Workload
Machine Learning
Workload
IoT
Workload
Workload
Abstraction
Any
Applications
Resource
Abstraction
Any
Resources
Company
Core Value?
(*Not Kubernetes)
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2.3 413
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Copyright 2019 Red Hat K.K.
$ operator-sdk new memcached-operator
( ) ( . 1
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Copyright 2019 Red Hat K.K.
$ operator-sdk add api --api-
version=cache.example.com/v1alpha1 --kind=Memcached
(pkg/apis/cache/v1alpha1/memcached_types.g
D A
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2
type MemcachedSpec struct {
// Size is the size of the memcached deployment
Size int32 `json:"size"`
}
type MemcachedStatus struct {
// Nodes are the names of the memcached pods
// +listType=set
Nodes []string `json:"nodes"`
}
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) D .
$ operator-sdk generate k8s
$ operator-sdk generate openapi
2
( 2AC
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Copyright 2019 Red Hat K.K.
$ operator-sdk add controller --api-
version=cache.example.com/v1alpha1 --kind=Memcached
err := c.Watch(
&source.Kind{Type: &cachev1alpha1.Memcached{}},
&handler.EnqueueRequestForObject{},
)
(pkg/controller/memcached/memcached_controlle
A C . I
3
err := c.Watch(
&source.Kind{Type: &appsv1.Deployment{}},
&handler.EnqueueRequestForOwner{
IsController: true,
OwnerType: &cachev1alpha1.Memcached{}},
)
https://github.com/operator-framework/operato
sdk/blob/master/example/memcached-
operator/memcached_controller.go.tmpl
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func (r *ReconcileMemcached) Reconcile(request reconcile.Request)
(reconcile.Result, error) {
// Lookup the Memcached instance for this reconcile request
memcached := &cachev1alpha1.Memcached{}
err := r.client.Get(context.TODO(),request.NamespacedName, memcached)
...
}
)) .
()( ( 3
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Copyright 2019 Red Hat K.K.
$ operator-sdk build quay.io/capsmalt/memcached-operator:v0.0.1
)4 - C D
$ docker push quay.io/capsmalt/memcached-operator:v0.0.1
serviceAccountName: memcached-operator
containers:
- name: memcached-operator
# Replace this with the built image name
image: quay.io/capsmalt/memcached-operator:v0.0.1
command:
- memcached-operator
imagePullPolicy: Always
(deploy/operator.yaml)
$ kubectl create -f deploy/crds/cache.example.com_memcacheds_crd.yaml
& (
.-. 4 - C D I A
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Copyright 2019 Red Hat K.K.
$ kubectl create -f deploy/operator.yaml
( 4 ) BDA C
$ kubectl create -f deploy/service_account.yaml
$ kubectl create -f deploy/role.yaml
$ kubectl create -f deploy/role_binding.yaml
& C
( 4 ) . 4 C
$ kubectl get deployment
NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE
memcached-operator 1 1 1 1 1m
$ kubectl get pod
NAME READY STATUS RESTARTS AGE
memcached-operator-7d76948766-nrcp7 1/1 Running 0 1m
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apiVersion: "cache.example.com/v1alpha1"
kind: "Memcached"
metadata:
name: "example-memcached"
spec:
size: 3
(deploy/crds/cache.example.com_v1alpha1_Memcached_cr.yaml)
$ kubectl apply -f deploy/crds/cache.example.com_v1alpha1_memcached_cr.yaml
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D
.)() 5 1 . C
$ kubectl get deployment
NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE
memcached-operator 1 1 1 1 2m
example-memcached 3 3 3 3 1m
$ kubectl get pods
NAME READY STATUS RESTARTS AGE
example-memcached-5cc7c78d6-g6h6d 1/1 Running 0 2m
example-memcached-5cc7c78d6-g5k7v 1/1 Running 0 2m
example-memcached-5cc7c78d6-m7vn7 1/1 Running 0 2m
memcached-operator-7gd6csgfd6-vvjqk 1/1 Running 0 3m
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( 53- 2 .
( )
apiVersion: "cache.example.com/v1alpha1"
kind: "Memcached"
metadata:
name: "example-memcached"
spec:
size: 5
$ kubectl apply -f
deploy/crds/cache.example.com_v1alpha1_memcached_cr.yaml
$ kubectl get deployment
NAME DESIRED CURRENT UP-TO-DATE AVAILABLE AGE
example-memcached 5 5 5 5 10m
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Copyright 2019 Red Hat K.K.
$ operator-sdk new memcached-operator \
--api-version=cache.example.com/v1alpha1 \
--kind=Memcached --type=ansible
Creates:
● Ansible Role
● Mapping File (watches.yaml)
● Custom Resource Definition
● Deploy manifest for the new Operator
# watches.yaml
---
- version: v1alpha1
group: cache.example.com
kind: Memcached
playbook: /path/to/playbook
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( )
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Kubernetes
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Copyright 2019 Red Hat K.K.
( )
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2 3 13
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Copyright 2019 Red Hat K.K.
Automated Dependency
Resolution
My
Operator
v1.1.2
require
s
requires
Jaeger Operator
jaeger.jaegertracing.io
/v1
CockroachDB Operator
cockroachdb.charts.helm.k8s.io/v1alpha
1
resolves to
resolves to
Operator Framework
installed
by
installed
by
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