[CDP] High Availability Forward Proxyパターンの構築

$ sudo yum -y update 
$ sudo yum -y install squid

#
# Recommended minimum configuration:
#
acl manager proto cache_object
acl localhost src 127.0.0.1/32 ::1
acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 ::1

# Example rule allowing access from your local networks.
# Adapt to list your (internal) IP networks from where browsing
# should be allowed
acl localnet src 10.0.0.0/8	# RFC1918 possible internal network
#acl localnet src 172.16.0.0/12	# RFC1918 possible internal network
#acl localnet src 192.168.0.0/16	# RFC1918 possible internal network
#acl localnet src fc00::/7       # RFC 4193 local private network range
#acl localnet src fe80::/10      # RFC 4291 link-local (directly plugged) machines

## source ip address
#acl localhost src xxx.xxx.xxx.xxx/32

acl SSL_ports port 443
acl Safe_ports port 80		# http
#acl Safe_ports port 21		# ftp
acl Safe_ports port 443		# https
#acl Safe_ports port 70		# gopher
#acl Safe_ports port 210		# wais
#acl Safe_ports port 1025-65535	# unregistered ports
#acl Safe_ports port 280		# http-mgmt
#acl Safe_ports port 488		# gss-http
#acl Safe_ports port 591		# filemaker
#acl Safe_ports port 777		# multiling http
acl CONNECT method CONNECT

#
# Recommended minimum Access Permission configuration:
#
# Only allow cachemgr access from localhost
http_access allow manager localhost
http_access deny manager

# Deny requests to certain unsafe ports
http_access deny !Safe_ports

# Deny CONNECT to other than secure SSL ports
http_access deny CONNECT !SSL_ports

# We strongly recommend the following be uncommented to protect innocent
# web applications running on the proxy server who think the only
# one who can access services on "localhost" is a local user
#http_access deny to_localhost

#
# INSERT YOUR OWN RULE(S) HERE TO ALLOW ACCESS FROM YOUR CLIENTS
#

# Example rule allowing access from your local networks.
# Adapt localnet in the ACL section to list your (internal) IP networks
# from where browsing should be allowed
http_access allow localnet
http_access allow localhost

# And finally deny all other access to this proxy
http_access deny all

# Squid normally listens to port 3128
#http_port 3128
http_port 8080

# We recommend you to use at least the following line.
hierarchy_stoplist cgi-bin ?

# Uncomment and adjust the following to add a disk cache directory.
#cache_dir ufs /var/spool/squid 100 16 256

# Leave coredumps in the first cache dir
coredump_dir /var/spool/squid

## visible hostname
visible_hostname none

## forwarded for
forwarded_for off

## add header
request_header_access Referer deny all
request_header_access X-Forwarded-For deny all
request_header_access Via deny all
request_header_access Cache-Control deny all

## cache
cache_mem 128 MB
cache_dir ufs /var/spool/squid 600 16 128

## replayheader
reply_header_max_size 50 KB

# Add any of your own refresh_pattern entries above these.
#refresh_pattern ^ftp:		1440	20%	10080
#refresh_pattern ^gopher:	1440	0%	1440
refresh_pattern -i (/cgi-bin/|\?) 0	0%	0
#refresh_pattern .		0	20%	4320

proxy=http://internal-proxy-ielb-123456789.ap-northeast-1.elb.amazonaws.com:8080

export AWS_DEFAULT_REGION=ap-northeast-1 
export http_proxy=http://internal-proxy-ielb-123456789.ap-northeast-1.elb.amazonaws.com:8080 
export https_proxy=https://internal-proxy-ielb-123456789.ap-northeast-1.elb.amazonaws.com:8080

$ sudo yum update
読み込んだプラグイン:priorities, update-motd, upgrade-helper
amzn-main/latest		| 2.1 kB     00:00
amzn-updates/latest		| 2.3 kB     00:00
依存性の解決をしています
--> トランザクションの確認を実行しています。
---> パッケージ aws-amitools-ec2.noarch 0:1.5.2-0.0.amzn1 を 更新
---> パッケージ aws-amitools-ec2.noarch 0:1.5.3-0.0.amzn1 を アップデート
---> パッケージ aws-apitools-as.noarch 0:1.0.61.4-1.0.amzn1 を 更新
---> パッケージ aws-apitools-as.noarch 0:1.0.61.5-1.0.amzn1 を アップデート
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		:

$ aws ec2 describe-regions
{
    "Regions": [
        {
            "Endpoint": "ec2.eu-west-1.amazonaws.com",
            "RegionName": "eu-west-1"
        },
        {
            "Endpoint": "ec2.sa-east-1.amazonaws.com",
            "RegionName": "sa-east-1"
        },
        {
		:
		: