- 1. Node.js Auto Scalingin 10 minuteswith AWS CloudFormation
2012/6/28 Node6@hakobera
2. QuestionAWSNode.js 3. Node.js1/ 1 => 417 => 7 =>
1200 4. AWS 5. AWS EC2AMI (VM)Node.js ELBAuto ScaleCloudWatch Auto
Scale Group DeployUpdate 6. AWS EC2AMI (VM)Node.js ELB orzAuto
ScaleCloudWatch Auto Scale Group DeployUpdate 7. AWS CloudFormation
http://aws.amazon.com/jp/cloudformation/ AWS JSON (Noder
DynamoDBCloudFront 8. PaaS 9. Tempalte:
https://cf-templates-for-nodejs.s3.amazonaws.com/cf-node-autoscale-tmpl.jsonApp:
https://github.com/hakobera/tng6_sample/zipball/masterGitHub:
https://github.com/hakobera/tng6_sample 10. Node.js CloudFormation
Node.js AutoScaleElastic LoadBalancer Deploy UpdateWebSocket 11.
Node.js 12. Node.js micro Node.js Installing Node.js via package
managerhttps://github.com/joyent/node/wiki/Installing-Node.js-via-package-manager
$ sudo yum localinstall --nogpgcheck
http://nodejs.tchol.org/repocfg/amzn1/nodejs-stable-release.noarch.rpm
$ sudo yum install nodejs-compat-symlinks npm v0.8 13. Node.jsCloud
Init "AppServerLaunchCong": {"Type" :
"AWS::AutoScaling::LaunchConguration","Metadata": {
"AWS::CloudFormation::Init": {"cong": { "packages": { "rpm" : {
"nodejs" :
"http://nodejs.tchol.org/repocfg/amzn1/nodejs-stable-release.noarch.rpm"
}, "yum": { "gcc-c++": [], "make": [], "git" : [],
"nodejs-compat-symlinks": [], "npm": [] } }, "sources" : {
"/var/opt/app" : { "Ref": "AppURL" } }}, ... 14. Node.js Cloud Init
"Properties": {"UserData": { "Fn::Base64": {"Fn::Base64": {
"Fn::Join": ["", ["#!/bin/bash -vn","yum update -y
aws-cfn-bootstrapn", "# Helper functionn", "function error_exitn",
"{n", " /opt/aws/bin/cfn-signal -e 1 -r "$1" ", { "Ref":
"WaitHandle" }, "n", " exit 1n", "}n", "# Install packagesn",
"/opt/aws/bin/cfn-init -s ", { "Ref": "AWS::StackName" }, " -r
AppServerLaunchCong ", " --access-key ", { "Ref": "HostKeys" }, "
--secret-key ", { "Fn::GetAtt": ["HostKeys", "SecretAccessKey"] },
" --region ", { "Ref": "AWS::Region" }, " || error_exit Failed to
run cfn-initn", 15. Auto Scale 16. Cloud Watch
http://aws.amazon.com/jp/cloudwatch/
http://aws.amazon.com/jp/autoscaling/Auto Scale Cloud Watch
CPUUtilization, DiskReadBytes, DiskReadOps, DiskWriteBytes,
DiskWriteOps, NetworkIn, NetworkOut Node.js CPUUtilization
NetworkOut OK 17. : CPUUtilization"AppServerScaleUpPolicy" : {
"Type" : "AWS::AutoScaling::ScalingPolicy", "Properties" : {
"AdjustmentType" : "ChangeInCapacity", "AutoScalingGroupName" : {
"Ref" : "AppServerGroup" }, "Cooldown" : "60", "ScalingAdjustment"
: "2" } }, "CPUAlarmHigh": {"Type":
"AWS::CloudWatch::Alarm","Properties": {"AlarmDescription":
"Scale-up if CPU > 90% for 10 minutes","MetricName":
"CPUUtilization","Namespace": "AWS/EC2","Statistic":
"Average","Period": "300","EvaluationPeriods": "2","Threshold":
"90","AlarmActions": [ { "Ref": "AppServerScaleUpPolicy" }
],"Dimensions": [ { "Name": "AutoScalingGroupName", "Value": {
"Ref": "AppServerGroup" } }], 18. Deploy Update 19.
Deploy"AppServerLaunchCong": {"Type" :
"AWS::AutoScaling::LaunchConguration","Metadata":
{"AWS::CloudFormation::Init": { "sources" : {"/var/opt/app" : {
"Ref": "AppURL" }}}, ... }},"Properties": {"UserData": {zipball
tarball URL "Fn::Base64": {"Fn::Base64": {"Fn::Join": ["", ["#
Start applicationn","cd /var/opt/appn","npm cong set PORT ", {
"Ref": "AppServerPort" }, "n","npm install
--productionn","NODE_ENV=production npm start > app.log
2>&1 &n",npm start OK 20. /**NPM package cong * Returns
a value related by given key. * This method search following
priority.NPM cong (global) *process.env * 1. NPM package cong * 2.
NPM cong * 3. process.env * * @param {String} key Environment key *
@param {String} [defaultValue] Default value if key not found. *
@return {String} */module.exports = function (key, defaultValue)
{var NPM_PACKAGE_PREFIX = npm_package_cong_;var NPM_PREFIX =
npm_cong_;var value = process.env[NPM_PACKAGE_PREFIX + key];if
(!value) {value = process.env[NPM_PREFIX + key];if (!value) {value
= process.env[key];}}value = (!value && defaultValue) ?
defaultValue : value;return value;}; 21. package.json { var http =
require(http),"name": "harite", env = require(./env);"version":
"0.1.0","scripts": { var server = http.createServer(function (req,
res) {"start": "node app.js", res.writeHead(200, { Content-Type:
text/plain });"test": "make test" res.end(hello);}, });"cong": {
server.listen(env(PORT), function () {"PORT": 5100,
console.log(Server is running on port %d,
server.address().port);"REDIS_URL": "redis://localhost" });}}"npm
cong set harite:HOST_NAME `curl
http://169.254.169.254/latest/meta-data/public-hostname`", "n","npm
cong set harite:PORT ", { "Ref": "HariteServerPort" }, "n","npm
cong set harite:REDIS_URL ", { "Fn::Join" : [ "", [ "redis://", {
"Fn::GetAtt" : [ "RedisServer", "PrivateIp" ]}, n","npm install
--productionn", AWS CloudInit "NODE_ENV=production npm start >
harite.log 2>&1 &n",
http://d.hatena.ne.jp/sugyan/20110909/1315575343http://d.hatena.ne.jp/Jxck/20120410/1334071898
22. Github Branch zipball
https://github.com/hakobera/tng6_sample/zipball/master 23.
UpdateUpdate Stack =>LoadBalancer AutoScale zipball tarball URL
API => 24. WebSocket 25. ELBHTTPHTTP1.1 UpdateWebSocket TCP
(Socket.IO 60 Socket.IO or WebSocket AmazonELB
http://d.hatena.ne.jp/Jxck/20120228/1330444857 26.
AutoScaleAutoScale WebSocket EC2 27. WebSocket URL API ELB HTTPEC2
Public DNS curl
http://169.254.169.254/latest/meta-data/public-hostname EC2 ELB
WebSocket URLWebSocket 28. 29. Pusher
https://github.com/hakobera/tuppari
https://github.com/hakobera/tuppari-servers CloudFormation 30. Any
Question ?
