Introduction of k8s rancher

Introduction of
Kubernetes & Rancher
Cloud Native Hiroshima #01
2018.09.22
© 2018 cyberblack28

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ISBN-10: 4798155373
ISBN-13: 978-4798155371
6 Rancher2.0
2018 3 15
#rancherjp
#kujiraya
#deepcn

Agenda
1. Market trend of Kubernetes
2. Introduction of Kubernetes
3. Introduction of Rancher
4. Kubernetes & Rancher Handson
5. Information

Market trend of Kubernetes
Kubernetes
CNCF
by Publickey 2018.3.8
Tc Tcb Io p g a
m r O F u
S F a e l n i
t INC h u O
Kubernetes

AWS Kubernetes Amazon EKS
• Amazon EKS 11
AWS re:Invent 2017
• ( )
( )

Azure Kubernetes Service (AKS) GA
– New regions, more features, increased productivity
by Microsoft Azure Blog 2018.6.13
• Microsoft Build 2018 Azure Container
Service Azure Kubernetes Service
•
2
10

Kubernetes on Windows Server Docker EE Linux
Windows Server
DockerCon 2018 by Publickey 2018.6.14
• Docker EE Windows Server
Kubernetes

VMware Kubernetes VMware Kubernetes
Engine VMware Cloud on AWS Azure
• VMware Cloud Kubernetes
VMware Kubernetes Engine VKE
• Kubernetes SmartCluster
• VMware Kubernetes

Kubernetes Google Cloud
Google Kubernetes Engine on-Prem Google Cloud Next ’18
• GKE(Google Kubernetes Engine)
Kubernetes
• Google Cloud Console Kubernetes
• Google Cloud Platform Marketplace Kubernetes

Google Serverless
containers Google Cloud Next ’18 by Publickey 2018.7.25
• Google Kubernetes Engine
GKE serverless add-on
• Kubernetes
Knative GKE serverless add-on

GitHub Goes All in on Kubernetes
by THENEWSTACK 2017.8.16
SRE Site Reliability Engineering

Distribution,PaaS,Managed,Installation/Operations
Kubernetes 1
https://qiita.com/cyberblack28/items/e4836b4ff06156f69588
Investigating of Kubernetes Platform

What’s kubernetes ?
kubernetes Google
Borg OSS
k8s kubernetes
8
CNCF(Cloud Native Computing
Foundation)

What’s kubernetes ?
•
•
•
•
•
•
•
•
•
•
•
Kubernetes

Kubernetes Architecture
Master
API
UI
CLI
Node 3
Node 2
Node 1
Kubernetes Master Node
• Master
• Node
Master
Node n
Image Registry

API
UI
CLI
API Server Scheduler Controller-Manager
etcd
Master
API Server kubernetes API REST,CRUD,
Scheduler Pod Node
Controller-Manager Node
etcd API Server
etcd

Node
Kubelet Node Pod YAML
Container Runtime Pod
Container Runtime kubelet
Kubernetes Docker containerd
rkt cri-o
Kube-proxy Node Service Cluster IP
Proxy iptables
Master
Kube-proxy
Container
Runtime
Kubelet
Node 1,2,3,n
Pod
Image Registry
PodPod
Pod PodPod
Pod PodPod

Pod
• 1
• Pod IP
• Pod Node
• Pod
Container
Volume
Pod
Container Container
Pod 1
IP
※ Container
3

Pod
Node2
Container
Pod
Container
Pod Node
Node1
Node1
Container
Pod
Container
localhost
IP
Container
Pod
Node2
IP

Deployment & ReplicaSet
Master
Deployment
Node 1,2,3,n
replicas:3
Controllers
• ReplicationController
D RS
Kube proxy
Container
Runtime
Kubelet
Pod1
Pod2
Pod3
Controller-Manager
D
RS
Deployment
ReplicaSet
Deployment ReplicaSet
ReplicaSet Pod
(replicas)
Pod
ReplicaSet Pod
Image Registry

Service
Client
Node
Service
Pod
Pod
Pod
ClusterIP Pod IP
ExternalIP Node IP:Port
NodePort Node IP:Port
LoadBalancer LB Service L4
endpoint
Pod Pod
Node
Node
LoadBalancer
Service Pod
DNS

Ingress
Ingress HTTP(S) Service
Kubernetes
Service 4(TCP/UDP over IP) Ingress 7(HTTP(S))
Service
Pod
Internet
Pod Pod
Ingress
endpoint

Others
PersistentVolumeClaim,PersistentVolume,StrageClass,Namespace,Label,Sel
ector,ConfigMap,Secret kubernetes

What’s Rancher ?
•
•
• Rancher Labs http://rancher.com/
•

Difference between Rancher 1.6 and 2.0
• docker-compose
• Network ipsec,vxlan
• Storage NFS,EBS
• Architecture Docker
• Java Go MySQL
•
• Architecture kubernetes
• 100%Go etcd
• 100%
kubernetes
• Helm
• Network flannel,canal,Calico
kubernetes
• Storage kubernetes

Feature of Rancher2.0
One Click Deployment ! !
Creating Private Catalogs ! !

Rancher2.0 Technical Architecture
Cluster
Controller
Auth
Proxy
Rancher Server
RKE Nodes
Kubectl
Kubernetes
API
Rancher
UI
CLI
API
Rancher Component
Other Kubernetes Master
Legend
Rancher
API Server
etcd
Cluster
Agent 1
Cluster
Agent 2
RKE
Kubernetes Master
GKE Nodes
GKE
Kubernetes Master
Kubelet Kubelet
a x v x tiy R
d l o
b e N H r c
b
e Re d c Dk
AKC e d r b n b
I Hus
oC Gg eP
e dv v S
h

Rancher2.0 Deep Dive Documents
https://www.slideshare.net/linecorp/lets-unbox-rancher-20-v200

Major developer catalogs

Kubernetes
Clusters
Create
Import
Bare
Metal
Create,Import,Manage Kubernetes Clusters !!
Manage

Rancher Labs New Project “Rio”
Kubernetes,Istio,Service Mesh Docker
Darren Shepherd
Co-founder and Chief Architect
at Rancher Labs, Inc.
@ibuildthecloud
https://github.com/rancher/rio
https://www.slideshare.net/cyberblackvoom/whats-rio-112779732
Rio !!

Get started with Rancher 2.0
OS Hardware Software
Ubuntu 16.04 (64-bit) Memory: 4GB • 1.12.6
• 1.13.1
• 17.03.2Red Hat Enterprise Linux
7.5 (64-bit)
RancherOS 1.3.0 (64-bit)
Step 1: Prepare a Linux Host
Step 2: Start the server
$ sudo docker run -d --restart=unless-stopped -p 80:80 -p 443:443 rancher/rancher
Web Access!! https://<server_ip>

Kubernetes & Rancher Handson
1. Rancher Server
2. Kubernetes Cluster
3. weavescope
4. RancherUI kubectl
5. Guestbook
rancher-server rancher-host
Guestbook
Guestbook
Rancher Server
weavescope
Agent
Server
Qiita URL
https://goo.gl/PVDe9f

1.Rancher Server
1.Instance 2
rancher-server
asia-northeast1
asia-northeast1-b
vCPUx1
Ubuntu 16.04 LTS
80GB
HTTP HTTPS
GCP(Google Cloud Platform)
rancher-host
asia-northeast1
asia-northeast1-b
vCPUx1
Ubuntu 16.04 LTS
80GB
HTTP HTTPS
1
2

2.Docker 2 :rancher-server,rancher-host
$ curl https://releases.rancher.com/install-docker/17.03.2.sh | sh
3.Rancher2.0 Server (1 :rancher-server )
$ sudo docker run -d --restart=unless-stopped -p 80:80 -p 443:443 rancher/rancher
4. RancherUI rancher-server
https://EXTERNAL-IP/
5.

6.Helm
Catalogs
Enable Global

1. Add Cluster
2.Kubernetes Cluster

2. CUSTOM Cluster Name Next
E C
POF
, ,
2
E C POF
SG E
C POF
G A
K N D
C
D
, , , , D
C

3. Show advanced options

4. Node Role etcd Control Plane Node Address
Public Address Internal Address 2 (rancher-host) IP
Copy to Clipboard 2 (rancher-host)
- Done
1
2
3
5
4

1. Default Catalog Apps
3.weavescope
2. Launch

3. weave-scope View Details

4. Launch

5. Workloads

6. Load Balancing

7. Add Ingress

9. Name Namespace weave-scope
Target weave-scope-frontend-weave-scope Port
4040 Save
1 2
3 4
5

10. URL

11.weavescope

1. Cluster.k8s-cluster
4.RancherUI kubectl
RancherUI kubectl
2. Launch kubectl

3.

3. kubectl get nodes
> kubectl get nodes
NAME STATUS ROLES AGE VERSION
rancher-host Ready controlplane,etcd,worker 39m v1.10.5
> kubectl version
Client Version: version.Info{Major:"1", Minor:"9", GitVersion:"v1.9.8",
GitCommit:"c138b85178156011dc934c2c9f4837476876fb07", GitTreeState:"clean",
BuildDate:"2018-05-21T19:01:12Z", GoVersion:"go1.9.3", Compiler:"gc",
Platform:"linux/amd64"}
Server Version: version.Info{Major:"1", Minor:"10", GitVersion:"v1.10.5",
GitCommit:"32ac1c9073b132b8ba18aa830f46b77dcceb0723", GitTreeState:"clean",
BuildDate:"2018-06-21T11:34:22Z", GoVersion:"go1.9.3", Compiler:"gc",
Platform:"linux/amd64"}
4. kubectl version

5.Guestbook 1 .
Guestbook yaml
https://raw.githubusercontent.com/kubernetes/examples/master/guestbook/all-in-
one/guestbook-all-in-one.yaml
1 .
> kubectl apply -f
https://raw.githubusercontent.com/kubernetes/examples/master/guestbook/all-in-
one/guestbook-all-in-one.yaml
service "redis-master" created
deployment "redis-master" created
service "redis-slave" created
deployment "redis-slave" created
service "frontend" created
deployment "frontend" created

.
> kubectl get services
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
frontend ClusterIP 10.43.52.144 <none> 80/TCP 1m
kubernetes ClusterIP 10.43.0.1 <none> 443/TCP 47m
redis-master ClusterIP 10.43.31.61 <none> 6379/TCP 1m
redis-slave ClusterIP 10.43.55.29 <none> 6379/TCP 1m
3.RancherUI Ingress
default Workloads Load Balancing
2 Add Ingress
1 2
3 4

4. Name Target frontend Port
80 Save
1
2 3
4

5. URL

6.Guestbook

7.weavescope Guestbook

1 guestbook-all-in-one.yaml
apiVersion: v1
kind: Service
metadata:
name: redis-master
labels:
app: redis
tier: backend
role: master
spec:
ports:
- port: 6379
targetPort: 6379
selector:
app: redis
tier: backend
role: master
---
apiVersion: apps/v1 # for k8s versions before 1.9.0 use apps/v1beta2 and before 1.8.0
use extensions/v1beta1
kind: Deployment
metadata:
name: redis-master
spec:
selector:
matchLabels:
app: redis
role: master
tier: backend
replicas: 1
template:
metadata:
labels:
app: redis
role: master
tier: backend
spec:
containers:
- name: master
image: k8s.gcr.io/redis:e2e # or just image: redis
resources:
requests:
cpu: 100m
memory: 100Mi
ports:
- containerPort: 6379
---
redis-master

apiVersion: v1
kind: Service
metadata:
name: redis-slave
labels:
app: redis
tier: backend
role: slave
spec:
ports:
- port: 6379
selector:
app: redis
tier: backend
role: slave
---
apiVersion: apps/v1 # for k8s versions before 1.9.0 use apps/v1beta2 and before 1.8.0 use
extensions/v1beta1
kind: Deployment
metadata:
name: redis-slave
spec:
selector:
matchLabels:
app: redis
role: slave
tier: backend
replicas: 2
template:
metadata:
labels:
app: redis
role: slave
tier: backend
spec:
containers:
- name: slave
image: gcr.io/google_samples/gb-redisslave:v1
resources:
requests:
cpu: 100m
memory: 100Mi
env:
- name: GET_HOSTS_FROM
value: dns
# If your cluster config does not include a dns service, then to
# instead access an environment variable to find the master
# service's host, comment out the 'value: dns' line above, and
# uncomment the line below:
# value: env
ports:
- containerPort: 6379
---
redis-slave

apiVersion: v1
kind: Service
metadata:
name: frontend
labels:
app: guestbook
tier: frontend
spec:
# if your cluster supports it, uncomment the following to automatically create
# an external load-balanced IP for the frontend service.
# type: LoadBalancer
ports:
- port: 80
selector:
app: guestbook
tier: frontend
---
apiVersion: apps/v1 # for k8s versions before 1.9.0 use apps/v1beta2 and before 1.8.0
use extensions/v1beta1
kind: Deployment
metadata:
name: frontend
spec:
selector:
matchLabels:
app: guestbook
tier: frontend
replicas: 3
template:
metadata:
labels:
app: guestbook
tier: frontend
spec:
containers:
- name: php-redis
image: gcr.io/google-samples/gb-frontend:v4
resources:
requests:
cpu: 100m
memory: 100Mi
env:
- name: GET_HOSTS_FROM
value: dns
# If your cluster config does not include a dns service, then to
# instead access environment variables to find service host
# info, comment out the 'value: dns' line above, and uncomment the
# line below:
# value: env
ports:
- containerPort: 80
redis-frontend

2 Guestbook

Information
Docker
:
ISBN-10: 4844339621
ISBN-13: 978-4844339625
Docker
Windows
:
ISBN-10: 4295000957
ISBN-13: 978-4295000952
Windows

Information
c :
ISBN-10: 4798153222
ISBN-13: 978-4798153223
L
L L
Docker D ――Linux
c :
ISBN-10: 4774176540
ISBN-13: 978-4774176543
LD e
LD

Information
kubernetes
:
ISBN-10: 4873118409
ISBN-13: 978-4873118406
Kubernetes Up &
Running
/ D
:
ISBN-10: 4798155373
ISBN-13: 978-4798155371
Google,RedHat,IBM, ,Rancher

Information
The Kubernetes Book
: Independently
published
ISBN-10: 1521823634
ISBN-13: 978-1521823637
kubernetes
Kubernetes in Action
: Manning Pubns Co
ISBN-10: 1617293725
ISBN-13: 978-1617293726

Information
Docker/Kubernetes
:
ISBN-10: 4297100339
ISBN-13: 978-4297100339
Docker/Kubernetes
https://cyberblack28.hatenablog.com/

Information
Kubernetes 2018.9.21
:
ISBN-10: 4295004804
ISBN-13: 978-4295004806
1 Kubernetes
2 Kubernetes
3 API kubectl
4 Workloads
5 Discovery & LB
6 Config & Storage
7 Cluster Metadata
8
9
10
11
12
13
14
15
16 CI/CD
17 ServiceMesh
18 Kubernetes
19 Kubernetes

Information
Certified Kubernetes Administrator(CKA)
,/,. a C v kp l gh Y uc W ( kp l gh
$$YZ W
1 no Ytcba Z rsN kp
l gh 1 moei w U o l g 9CC 032EE
9CC FFF 6 4C: : 6 4 )
Certified Kubernetes Application Developer(CKAD)

Information
Kubernetes&Docker KD100
https://www.mirantis.co.jp/training/
Kubernetes&Docker KD200
MIRANTIS kubernetes

Information
https://www.katacoda.com/
Web
Docker,Kubernetes,Istio,Prometheus

Information
https://labs.play-with-docker.com/
Play with Docker
https://training.play-with-docker.com/
Play with Docker Classroom

Information
https://labs.play-with-k8s.com/
Play with Kubernetes
https://training.play-with-kubernetes.com/kubernetes-workshop/
Play with Kubernetes Classroom

Information
Kubernetes
https://thinkit.co.jp/author/13290
cndjp
https://speakerdeck.com/hhiroshell

Information
JAPAN
CONTAINER
DAYS
V18.12
2018.12.04-05
@ sola city Conference Center

Introduction of k8s rancher

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Introduction of k8s rancher