Location via proxy:   [ UP ]  
[Report a bug]   [Manage cookies]                
SlideShare a Scribd company logo

Learning kubernetes

•
•

Kubernetes Basics - Part 2 Introduction to Kubernetes http://eueung.github.io/docker-stuff/learning-k8s

1 of 37
Download to read offline
Orchestrating Containers Kubernetes - Learning Continues Eueung Mulyana http://eueung.github.io/docker-stuff/learning-k8s CodeLabs | Attribution-ShareAlike CC BY-SA 1 / 37
Outline Base Setup & OS Con g k8s Addons - DNS & Dashboard Remote Master & k8s Visualizer Test It All 2 / 37
Base Setup & OS Config 3 / 37
4 / 37 node1 RPI 3 192.168.1.102 node2 RPI 2 192.168.1.101 node3 RPI 2 192.168.1.100
5 / 37 HypriotOS 0.8.0 $flash-d/dev/mmcblk0hypriotos-rpi-v0.8.0.img $flash-d/dev/mmcblk0hypriotos-rpi-v0.8.0.img $ssh-keygen-f"/home/em/.ssh/known_hosts"-Rblack-pearl.loc $sshpirate@black-pearl.local #pirate/hypriot $sudonano/etc/network/interfaces.d/eth0 $sudonano/etc/hosts $sudonano/etc/hostname #--- $sudonano/boot/device-init.yaml #hostnameforyourHypriotOSdevice hostname:node2 docker: images: -"/var/local/rpi-consul_v0.6.4.tar.gz" -"/var/local/rpi-swarm_v1.2.2.tar.gz" clusterlab: service: run_on_boot:"false" #optionalwirelessnetworksettings wifi: interfaces: # wlan0: # ssid:"MyNetwork" # password:"secret_password"
6 / 37 HypriotOS 0.8.0 $sudosu $mount-oremount,rw/sys/fs/cgroup $mkdir/sys/fs/cgroup/cpuset $nano/boot/cmdline.txt #edit:cgroup_enable=cpuset #--- $nano/etc/resolv.conf searchdefault.svc.cluster.localsvc.cluster.localcluster.loc nameserver10.0.0.10 nameserver192.168.1.1 #--- #optionaltools $apt-getinstalldnsutilszip $shutdown-rnow #--- $ssh-keygen-R192.168.1.101&&ssh-keygen-Rnode2.local $ssh-copy-id-oStrictHostKeyChecking=no-oCheckHostIP=nopira $sftppirate@node2.local #putimages... #putkube-systemd...
7 / 37 kubernetes-on-arm v0.7.0 $dpkg-ikube-systemd.deb $kube-configinstall #rpiorrpi-2,hypriotos $gzip-dcimages.tar.gz|dockerload $kube-configinfo $kube-configenable-master $kube-configenable-worker192.168.1.102
k8s Addons DNS & Dashboard 8 / 37
$sudokube-configenable-addondashboard $sudokube-configenable-addondns namespace"kube-system"created Warning:Unitfileofnetworking.servicechangedondisk,'systemctldaemon-reload'reco replicationcontroller"kube-dns-v8"created service"kube-dns"created Startedaddon:dns $kubectlcluster-info Kubernetesmasterisrunningathttp://localhost:8080 KubeDNSisrunningathttp://localhost:8080/api/v1/proxy/namespaces/kube-system/services Dashboardisrunningathttp://localhost:8080/api/v1/proxy/namespaces/kube-system/servic $kubectl--namespace=kube-systemgetpods,rc,svc NAME READY STATUS RESTARTS AGE kube-dns-v8-uv6r5 4/4 Running 0 1h kubernetes-dashboard-h5g84 1/1 Running 0 1h NAME DESIRED CURRENT AGE kube-dns-v8 1 1 22h kubernetes-dashboard 1 1 22h NAME CLUSTER-IP EXTERNAL-IP PORT(S) AGE kube-dns 10.0.0.10 <none> 53/UDP,53/TCP 22h kubernetes-dashboard 10.0.0.249 <none> 80/TCP 22h 9 / 37 Master
#ksp-restart.sh #--- #!/bin/bash kubectldeletepo$(kubectlgetpo--namespace=kube-system|grepkube-dns|cut-d'' kubectldeletepo$(kubectlgetpo--namespace=kube-system|grepdashboard|cut-d'' 10 / 37 Restart Pods
$kubectl--namespace=kube-systemgetpo NAME READY STATUS RESTARTS AGE kube-dns-v8-8dk0a 4/4 Running 0 11s kubernetes-dashboard-ew4ec 1/1 Running 0 21s $kubectllogs--namespace=kube-systemkube-dns-v8-8dk0a-ckube2sky I053123:29:01.131613 1kube2sky.go:462Etcdserverfound:http://127.0.0.1:4001 I053123:29:02.225877 1kube2sky.go:529Usinghttps://10.0.0.1:443forkubernetes I053123:29:02.226027 1kube2sky.go:530UsingkubernetesAPI<nil> I053123:29:02.231187 1kube2sky.go:598Waitingforservice:default/kubernetes I053123:29:03.431233 1kube2sky.go:660SuccessfullyaddedDNSrecordforKubernet $kubectl--namespace=kube-systemexec-tikube-dns-v8-8dk0a--nslookupkubernetes.defa ... $kubectl--namespace=kube-systemexec-tikube-dns-v8-8dk0a--cat/etc/hosts $kubectl--namespace=kube-systemexec-tikube-dns-v8-8dk0a--cat/etc/resolv.conf 11 / 37 Check DNS Service
#luxas/addons/sleep.yaml apiVersion:v1 kind:Pod metadata: name:alpine-sleep namespace:default spec: containers: -image:luxas/alpine command: -sleep -"3600" imagePullPolicy:IfNotPresent name:alpine-sleep restartPolicy:Always --- apiVersion:v1 kind:Pod metadata: name:raspbian-sleep namespace:default spec: containers: -image:resin/rpi-raspbian:jessie command: -sleep -"3600" imagePullPolicy:IfNotPresent name:raspbian-sleep restartPolicy:Always 12 / 37 Test DNS Service
$kubectlcreate-fsleep.yaml $kubectlexec-italpine-sleep--nslookupkubernetes.default10.0.0.10 $kubectlexec-italpine-sleep--nslookupkubernetes10.0.0.10 $kubectlexec-italpine-sleep--nslookupkube-dns.kube-system.svc.cluster.local10.0 $kubectlexec-italpine-sleep--nslookupkubernetes-dashboard.kube-system.svc.cluster Server: 10.0.0.10 Address1:10.0.0.10 Name: kubernetes-dashboard.kube-system.svc.cluster.local Address1:10.0.0.249 13 / 37 Test DNS Service
#fromWorker/Minion pirate@node2in~ $curl-khttps://kubernetes.default.svc.cluster.local $curl-khttps://kubernetes { "paths":[ "/api", "/api/v1", "/apis", "/apis/autoscaling", "/apis/autoscaling/v1", "/apis/batch", "/apis/batch/v1", "/apis/extensions", "/apis/extensions/v1beta1", "/healthz", "/healthz/ping", "/logs/", "/metrics", "/resetMetrics", "/swagger-ui/", "/swaggerapi/", "/ui/", "/version" ] } 14 / 37 Test DNS Service
Dashboard   15 / 37
Dashboard   16 / 37
Dashboard   17 / 37
Dashboard   18 / 37
Dashboard   19 / 37
Remote Master & k8s Visualizer 20 / 37
$wgethttps://storage.googleapis.com/kubernetes-release/release/v1.2.0/bin/linux/amd64/kubectl $chmod+xkubectl&&sudomvkubectl/usr/local/bin/ $kubectlconfigset-clusterlk8--server=http://192.168.1.102:8080 $kubectlconfigset-contextlk8--cluster=lk8 $kubectlconfiguse-contextlk8 $kubectlgetnodes NAME STATUS AGE 192.168.1.100 Ready 3d 192.168.1.101 Ready 3d 192.168.1.102 Ready 3d 21 / 37 Remote Master
$gitclonehttps://github.com/saturnism/gcp-live-k8s-visualizer.gitk8s-visualizer $cdk8s-visualizer $kubectlproxy--www=. Startingtoserveon127.0.0.1:8001 22 / 37 k8s Visualizer
k8s Visualizer   23 / 37
Test It All 24 / 37
$kubectlrunhello-kube--image=hypriot/rpi-nano-httpd --port=80-lvisualize=true,run deployment"hello-kube"created $kubectlexposedeploymenthello-kube--type="LoadBalancer"--external-ip="192.168.1.10 service"hello-kube"exposed #anynodeeth0address:102,101,100 $kubectlgetsvc NAME CLUSTER-IP EXTERNAL-IP PORT(S) AGE hello-kube 10.0.0.157 ,192.168.1.102 80/TCP 37s kubernetes 10.0.0.1 <none> 443/TCP 3d $kubectlgetpo-owide NAME READY STATUS RESTARTS AGE NODE alpine-sleep 1/1 Running 0 1h 192.168.1.102 hello-kube-658934829-o6ka3 1/1 Running 0 2m 192.168.1.101 k8s-master-192.168.1.102 4/4 Running 3 2h 192.168.1.102 raspbian-sleep 1/1 Running 0 1h 192.168.1.102 25 / 37 Test #1
#fromnode3 $curl192.168.1.102 $curl10.0.0.157 $curlhello-kube <html> <head><title>PiarmedwithDockerbyHypriot</title> <bodystyle="width:100%;background-color:black;"> <divid="main"style="margin:100pxauto0auto;width:800px;"> <imgsrc="pi_armed_with_docker.jpg"alt="piarmedwithdocker"style="width:800px </div> </body> </html> 26 / 37 Test #1 Reachability
hello-kube Visualized   27 / 37
Test #2 via Dashboard   28 / 37
Test #2 via Dashboard   29 / 37
Test #2 - Take 2   30 / 37
Test #2 - Take 2   31 / 37
Test #2 - Visualizer   32 / 37
$kubectlgetpo-owide NAME READY STATUS RESTARTS AGE NODE alpine-sleep 1/1 Running 2 2h 192.168.1.102 k8s-master-192.168.1.102 4/4 Running 3 4h 192.168.1.102 my-nginx-afadx 1/1 Running 0 19m 192.168.1.100 my-nginx-e5coa 1/1 Running 0 19m 192.168.1.101 my-nginx2-68r7o 1/1 Running 0 6m 192.168.1.101 my-nginx2-pviak 1/1 Running 0 6m 192.168.1.100 raspbian-sleep 1/1 Running 2 2h 192.168.1.102 $kubectlgetsvc NAME CLUSTER-IP EXTERNAL-IP PORT(S) AGE kubernetes 10.0.0.1 <none> 443/TCP 3d my-nginx2 10.0.0.138 8300/TCP 6m $curlmy-nginx2:8300 <p>WELCOMETONGINX</p> HypriotOS/armv7:pirate@node1in~ 33 / 37 Test #2 Reachability
34 / 37
Refs 35 / 37
Refs 1. Docker Pirates ARMed with explosive stu 2. kubernetes-on-arm - by @luxas 3. k8s-visualizer @brendandburns @saturnism 4. Setting up Kubernetes visualization of a cluster - @rpicloud 36 / 37
END Eueung Mulyana http://eueung.github.io/docker-stuff/learning-k8s CodeLabs | Attribution-ShareAlike CC BY-SA 37 / 37

More Related Content

Learning kubernetes