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webapp-autoscaling-webserver.yaml
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webapp-autoscaling-webserver.yaml
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# Note, the development environment will only spin a min of 1 instance (Not HA Support)
# The production environment will spin a min of 2 instance (HA support)
# You can adjust the ASMIN, ASMAX, ASDES at the master.yaml file
# to meet your instances spin numbers.
#
---
AWSTemplateFormatVersion: "2010-09-09"
Description: >
This template deploys an AutoScaling Launch Config and Group for WebServer
Parameters:
PMServerEnv:
Description: "Server Environment name."
ConstraintDescription: "Choose an Environment from the drop down"
Type: "String"
AllowedValues:
- "dev"
- "staging"
- "prod"
PMKeyName:
Description: "Enter an existing EC2 KeyPair. Default is MyEC2Key"
Type: "String"
PMInstanceType:
Description: "Enter t2.micro or m1.small. Default is t2.micro."
Type: "String"
AllowedValues:
- "t2.micro"
- "m1.small"
PMPublicSubnets:
Description: "Subnets to launch instances into"
Type: "List<AWS::EC2::Subnet::Id>"
PMProxyHostSG:
Description: "Select the Security Group to use for the EC2 hosts"
Type: "AWS::EC2::SecurityGroup::Id"
PMWEBDOMAIN:
Description: "A reference to the Webserver domain name"
Type: "String"
PMAPPLoadBalancerUrl:
Description: "A reference to the AppServer Load Balancer"
Type: "String"
PMWEBLoadBalancer:
Description: "A reference to the Webserver Load Balancer"
Type: "String"
PMIAMS3CWInstanceProfile:
Description: "A reference to the IamInstanceProfile"
Type: "String"
PMRegionAMI:
Description: "A reference to the Region AMI"
Type: "String"
PMASMIN:
Description: "A reference to the MinSize"
Type: "String"
PMASMAX:
Description: "A reference to the MaxSize"
Type: "String"
PMASDES:
Description: "A reference to the DesiredCapacity"
Type: "String"
Resources:
# Auto Scaling Launch Configuration
LaunchConfiguration:
Type: "AWS::AutoScaling::LaunchConfiguration"
Properties:
AssociatePublicIpAddress: "true"
KeyName:
Ref: "PMKeyName"
ImageId:
Ref: "PMRegionAMI"
InstanceType:
Ref: "PMInstanceType"
IamInstanceProfile:
Ref: "PMIAMS3CWInstanceProfile"
SecurityGroups:
- Ref: "PMProxyHostSG"
UserData:
Fn::Base64: !Sub |
#!/bin/bash -xe
yum install nginx htop telnet git awslogs python-pip aws-cfn-bootstrap -y
yum update -y
mkdir -p /etc/nginx/sites-enabled
mkdir -p /etc/nginx/sites-available
echo "[plugins]
cwlogs = cwlogs
[default]
region = ${AWS::Region}" > /etc/awslogs/awscli.conf
service awslogs start
chkconfig awslogs on
mkdir -p /home/www/public_html/${PMWEBDOMAIN}
echo "<?php phpinfo(); ?>" > /home/www/public_html/${PMWEBDOMAIN}/index.php
chown -R nginx:nginx /home/www/public_html/${PMWEBDOMAIN}
chmod -R +x /home/www/public_html/${PMWEBDOMAIN}
echo "server {
server_name ${PMWEBDOMAIN};
listen 80;
root /home/www/public_html/${PMWEBDOMAIN}/;
index index.php index.html index.htm;
location / {
try_files \$uri \$uri/ /index.php?\$args;
}
location ~ \\.php\$ {
try_files \$uri =404;
fastcgi_split_path_info ^(.+\.php)(/.+)\$;
fastcgi_pass php;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME \$document_root\$fastcgi_script_name;
include fastcgi_params;
fastcgi_read_timeout 300;
}
}" > /etc/nginx/sites-available/${PMWEBDOMAIN}
ln -sf /etc/nginx/sites-available/${PMWEBDOMAIN} /etc/nginx/sites-enabled/
echo "server {
listen 80 default;
server_name _;
access_log /var/log/nginx/localhost.access.log;
location / {
root /usr/share/nginx/html;
index index.html index.htm index.php;
}
}" > /etc/nginx/sites-available/default
ln -sf /etc/nginx/sites-available/default /etc/nginx/sites-enabled/
echo "proxy_redirect off;
client_body_buffer_size 256K;
client_max_body_size 12m;
proxy_connect_timeout 600;
proxy_send_timeout 600;
proxy_read_timeout 600;
proxy_buffer_size 128k;
proxy_buffers 4 256k;
proxy_busy_buffers_size 256k;" > /etc/nginx/proxy.conf
echo "user nginx;
worker_processes auto;
pid /var/run/nginx.pid;
events {
worker_connections 1024;
multi_accept on;
use epoll;
}
worker_rlimit_nofile 100000;
http {
##
# Basic Settings
##
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 65;
types_hash_max_size 2048;
server_tokens off;
include /etc/nginx/mime.types;
default_type application/octet-stream;
# set client body size to 32M #
client_max_body_size 32M;
##
# Logging Settings
##
access_log /var/log/nginx/access.log;
error_log /var/log/nginx/error.log;
##
# Gzip Settings
##
gzip on;
gzip_disable "msie6";
gzip_static on;
gzip_vary on;
gzip_proxied any;
gzip_comp_level 9;
gzip_buffers 16 8k;
gzip_http_version 1.1;
gzip_types text/plain text/css text/csv application/json application/javascript application/x-javascript image/x-icon text/xml application/xml application/xml+rss text/javascript;
##
# open_file_cache optimization
##
open_file_cache max=200000 inactive=50s;
open_file_cache_valid 60s;
open_file_cache_min_uses 2;
open_file_cache_errors on;
##
# Upstream Server
##
upstream php {
server ${PMAPPLoadBalancerUrl}:9000;
}
##
# Virtual Host Configs
##
include /etc/nginx/conf.d/*.conf;
include /etc/nginx/sites-enabled/*;
}" > /etc/nginx/nginx.conf
service nginx start
chkconfig nginx on
/opt/aws/bin/cfn-signal -e 0 -r 'server setup complete' "${WaitHandleWEB}" > /tmp/userdata.log
WaitHandleWEB:
Type: "AWS::CloudFormation::WaitConditionHandle"
WaitCondition:
Type: "AWS::CloudFormation::WaitCondition"
Properties:
Handle: !Ref "WaitHandleWEB"
Timeout: '600'
# Auto Scaling Group Basic Setup
WebScalingGroup:
Type: "AWS::AutoScaling::AutoScalingGroup"
Properties:
MinSize: !Ref "PMASMIN"
MaxSize: !Ref "PMASMAX"
DesiredCapacity: !Ref "PMASDES"
LaunchConfigurationName:
Ref: "LaunchConfiguration"
VPCZoneIdentifier:
Ref: "PMPublicSubnets"
LoadBalancerNames:
- Ref: "PMWEBLoadBalancer"
HealthCheckGracePeriod: "300"
HealthCheckType: "ELB"
Tags:
- Key: "Name"
Value: !Sub "${PMServerEnv}-WEBserver"
PropagateAtLaunch: 'true'
# Auto ScalingUp Policy - Basic Setup
WebServerScaleUpPolicy:
Type: "AWS::AutoScaling::ScalingPolicy"
Properties:
AdjustmentType: "ChangeInCapacity"
AutoScalingGroupName:
Ref: "WebScalingGroup"
Cooldown: '300'
ScalingAdjustment: '1'
# Auto ScalingDown Policy - Basic Setup
WebServerScaleDownPolicy:
Type: "AWS::AutoScaling::ScalingPolicy"
Properties:
AdjustmentType: "ChangeInCapacity"
AutoScalingGroupName:
Ref: "WebScalingGroup"
Cooldown: '300'
ScalingAdjustment: '-1'
Outputs:
WebScalingGroup:
Description: "Auto Scaling Group Reference ID"
Value: !Ref "WebScalingGroup"
WebServerScaleUpPolicy:
Description: "Auto Scaling Up Policy Reference ID"
Value: !Ref "WebServerScaleUpPolicy"
WebServerScaleDownPolicy:
Description: "Auto Scaling Down Policy Reference ID"
Value: !Ref "WebServerScaleDownPolicy"