Kubernetes Message Version Demo

Kubernates Hello World
1 Shutting down the firewall

$systemctl Disable Firewalld$systemctl Stop FIREWALLD

2 Installing ETCD and Kubernates

$yum install-y Etcd kubernates

3 Modifying the configuration

Docker/etc/sysconfig/docker
Options= '--registry-mirror=http://06ec3c30.m.daocloud.io--selinux-enabled=false--insecure-registry gcr.io '
Kubernetes Apiserver/etc/kubernates/apiserver
ServiceAccount deletion in the--admission-control parameter

4 Sequential start

$systemctl start Etcd$systemctl start Docker $systemctl start Kube-apiserver$systemctl start Kube- controller-manager$systemctl start kube-scheduler$systemctl start kubelet$systemctl start Kube- Proxy

Stand-alone version of k8s construction completed

Hello Word Message Board system
Dependent on three mirrors:
Docker.io/kubeguide/guestbook-php-frontend Web Front End
Docker.io/kubeguide/redis-master Write a message
Docker.io/kubeguide/guestbook-redis-slave Read Message

1 Creating master pods and services
Writing Redis-master-controller.yaml

apiVersion:v1kind:ReplicationControllermetadata:  name:redis-Master  Labels:    name:redis -masterspec:  2  selector:    name:redis-Master  Template:    metadata:      Labels:        name:redis-Master    Spec:      containers:      -  Name:master        image:kubeguide/redis-Master        ports:        6379

Publish to K8s Cluster

$kubectl create-f Redis-master-controller.yaml

View

Get Rccontroller CONTAINER (s) IMAGE (s) SELECTOR replicas Ageredis 1  Get  poname ready STATUS Restarts Ageredis1/17 20d

Create a service corresponding to it
Writing Redis-master-service.yaml

apiVersion:v1kind:Servicemetadata:  name:redis-Master  Labels:    name:redis-  Masterspec:  ports:  6379    6379  selector:    name: Redis-master

$kubectl create-f redis-master-get  svcname cluster_ip external_ip PORT (S) SELECTOR Ageredis  10.254. 38.83 6379/tcp name=redis-master 20d

2 creating redis-salve pods and services

Writing Redis-slave-controller.yaml

apiVersion:v1kind:ReplicationControllermetadata:  name:redis-slave  Labels:    name:redis -slavespec:  2  selector:    name:redis-slave  Template:    metadata:      Labels:        name:redis-slave    spec:      containers:      -  Name:slave        image:kubeguide/guestbook-redis-slave        env:        - Name:get_hosts_ From          value:env        ports:        6379

Publish to K8s Cluster

$kubectl create-f redis-master-getget pod

Create a service corresponding to it

Writing Redis-slave-service.yaml

apiVersion:v1kind:Servicemetadata:  name:redis-slave  Labels:    name:redis-  Slavespec:  ports:  6379  selector:    name:redis-slave

$kubectl create-f redis-slave-get Svc

3 Creating frontend pods and services

Writing Frontend-controller.yaml

apiVersion:v1kind:ReplicationControllermetadata:  name:frontend  Labels:    name:frontendspec:   3  selector:    name:frontend  Template:    metadata:      Labels:        name: Frontend    Spec:      containers:      - name:frontend        image:kubeguide/guestbook-php- frontend        env:        - name:get_hosts_from          value:env        ports:        80 

Publish to K8s Cluster

$kubectl create-f frontend-getget pod

Create a service corresponding to it

Writing Frontend-service.yaml

apiVersion:v1kind:Servicemetadata:  name:frontend  Labels:    name:frontedspec:  type:nodeport  Ports:    the 30001 selector  :    name:frontend      

Create a service

$kubectl create-f Frontend-service.yaml

View

Get Svc

4 access via browser
localhost:30001

Note k8s requires container gcr.io/google_containers/pause

Kubernetes Message Version Demo