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Dockerize hybris components and orchestrate with Kubernetes

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云化你的互联网应用和基础设施（三）统一管理和调度资源

云化你的互联网应用和基础设施（二）容器化hybris应用组件

云化你的互联网应用和基础设施（一）序言

Motivation

containerize hybris components

auto-scale

auto-heal

auto provision on bare metal and cloud providers

resource orchestration

immutable infrastructure

Preparation

software

hybris 5.6

solr 5.2.1

zookeeper 3.4.6

mysql 5.6.26

docker 1.7.1

gentoo linux latest

etcd 2.1.1

kubernetes 1.0.1

environment

deployment architecture overview

Dockerize hybris components

https://github.com/colorzhang/docker

Dockerize

based on Open JDK 8

Optimize

minimize steps

non-root user

ports

Parameterise

TODO

Final Dockfile

Further improvement

winston@gentoo ~ $ docker images

REPOSITORY TAG IMAGE ID CREATED VIRTUAL SIZE

winston/hybris 5.6 0117e362783a 3 hours ago 5.469 GB

winston/hybris 5.6-base 9845bb327b4f 3 hours ago 5.001 GB

winston/openjdk 8 0d0745a44a63 3 hours ago 186.9 MB

winston/solr 5.2.1 69e78d29cc1e 8 hours ago 734.5 MB

apache/zookeeper latest dc12e0467f49 8 hours ago 238.7 MB

winston/java 8 ae620d1bcac7 11 hours ago 180.5 MB

mysql 5.6 a1798df89390 44 hours ago 283.8 MB

java 8 2f5a61e35ea4 9 days ago 817.5 MB

java openjdk-8-jdk 2f5a61e35ea4 9 days ago 817.5 MB

debian wheezy bbe78c1a5a53 9 days ago 84.95 MB

gcr.io/google_containers/kube-ui v1.1 c144d89158dc 7 weeks ago 5.83 MB

centos latest 7322fbe74aa5 10 weeks ago 172.2 MB

alpine latest 31f630c65071 11 weeks ago 5.25 MB

gcr.io/google_containers/pause 0.8.0 6c4579af347b 13 months ago 239.8 kB

kubernetes/pause latest 6c4579af347b 13 months ago 239.8 kB

Verify with docker command

build image

docker build -t winston/hybris:5.6 .

run

docker run -it --name=hybris -p 9001:9001 -p 9002:9002 -p 8000:8000 winston/hybris:5.6

Kubernetes up & running

build

git clone https://github.com/kubernetes/kubernetes

cd kubernetes

make

cp _output/local/bin/linux/amd64/kube* /usr/bin

run kubernetes

start.sh

/etc/init.d/etcd start

/etc/init.d/docker start

kube-apiserver --allow-privileged --insecure-bind-address=0.0.0.0 --insecure-port=8080 --service-cluster-ip-range=10.0.0.0/16 --etcd_servers= http://localhost:4001 --admission_control=NamespaceLifecycle,LimitRanger,ResourceQuota >/var/log/kube/kube-apiserver.log 2>&1 &

kube-controller-manager --master= http://localhost:8080 >/var/log/kube/kube-controller-manager.log 2>&1 &

kube-scheduler --master= http://localhost:8080 >/var/log/kube/kube-scheduler.log 2>&1 &

kube-proxy --master= http://localhost:8080 --legacy-userspace-proxy=false --v=1 >/var/log/kube/kube-proxy.log 2>&1 &

kubelet --allow-privileged --api_servers= http://localhost:8080 --v=1 >/var/log/kube/kubelet.log 2>&1 &

:warning::warning::warning: kube-proxy eats too much cpu if use userspace proxy under heavy load. pls use to-be-released iptables proxy in 1.1. see issue https://github.com/kubernetes/ ... 13270

run hybris components

kubectl create -f zk-service.yaml

kubectl create -f solr-service.yaml

kubectl create -f mysql-service.yaml

kubectl create -f hybris56-service.yaml

kubectl create -f zk-rc.yaml

kubectl create -f solr-rc.yaml

kubectl create -f mysql-rc.yaml

kubectl create -f hybris56-rc.yaml

Verify

gentoo ~ # kubectl get po

NAME READY STATUS RESTARTS AGE

hybris56-controller-9p5su 1/1 Running 0 3h

mysql-controller-o9wof 1/1 Running 0 8h

solrcloud-controller-sklrt 1/1 Running 0 8h

solrcloud-controller-tshs7 1/1 Running 0 8h

zk-controller-yt97k 1/1 Running 0 8h

gentoo ~ # kubectl get svc

NAME CLUSTER_IP EXTERNAL_IP PORT(S) SELECTOR AGE

hybris56-service 10.0.159.218 <none> 9001/TCP,9002/TCP,8000/TCP app=hybris56 23d

kubernetes 10.0.0.1 <none> 443/TCP <none> 29d

mysql-service 10.0.199.144 <none> 3306/TCP app=mysql 2d

solr-service 10.0.162.73 <none> 8983/TCP app=solrcloud 2d

zk-service 10.0.108.253 <none> 2181/TCP app=zookeeper 20d

gentoo ~ # kubectl get rc

CONTROLLER CONTAINER(S) IMAGE(S) SELECTOR REPLICAS AGE

hybris56-controller hybris56 winston/hybris:5.6 app=hybris56 1 3h

mysql-controller mysql mysql:5.6 app=mysql 1 8h

solrcloud-controller solrcloud winston/solr:5.2.1 app=solrcloud 2 8h

zk-controller zookeeper apache/zookeeper app=zookeeper 1 8h

gentoo ~ # kubectl get ep

NAME ENDPOINTS AGE

hybris56-service 172.17.0.112:9002,172.17.0.112:9001,172.17.0.112:8000 23d

kubernetes 10.0.2.15:6443 29d

mysql-service 172.17.0.43:3306 2d

solr-service 172.17.0.66:8983,172.17.0.67:8983 2d

zk-service 172.17.0.62:2181 20d

gentoo ~ # pstree

init-+-6
[agetty]
[exe---3
[{exe}]]
[{java}]

| |-kube-ui---3
[{kube-ui}]
[{mysqld}]

| |-3 [pause---3 [{pause}]]

| |-3 [pause---4 [{pause}]]

| |-start.sh---bash---java---45
[{java}]
[{java}]

| |-wrapper.sh---wrapper-linux-x-+-java---188
[{java}]
-{wrapper-linux-x} | [{docker}]

|-etcd---8
[{etcd}]
[{kube-apiserver}]

|-kube-controller---16
[{kube-controller}]
[{kube-proxy}]

|-kube-scheduler---15
[{kube-scheduler}]
[{kubelet}]

|-sshd-+-sshd---bash

| |-sshd---bash---pstree

| -2*[sshd---sshd---bash] -systemd-udevd

Scale in & out

Scale out SolrCloud to 4 replicas

kubectl scale --replicas=4 replicationcontrollers solrcloud-controller

Scale out hybris to 2 nodes

kubectl scale --replicas=2 replicationcontrollers hybris56-controller

Orchestrate more components

dockerize nginx

dockerize ELK

dockerize redis

Further improvements

automate with Ansible

multi-nodes kubernetes cluster

monitoring

security

overlay network (Flannel)

Happy containerizing!

Winston Zhang ()August 2015

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