The Configuration =

• Load Balancer: <192.168.0.2> // will be our haproxy server
• Web Server 1: <192.168.0.10> // web application server 1
• Web Server 2: <192.168.0.20> // web application server 2
• Admin Panel Port 8080: <192.168.0.2> // Statistics Panel on port 8080

                                       Web Server 1
Load Balancer <
                                       Web Server 2

Step 1: Get and Install haproxy

We’ll be using the 1.3.17 src files to install haproxy. You can get them from http://haproxy.1wt.eu/

wget http://haproxy.1wt.eu/download/1.3/src/haproxy-1.3.17.tar.gz 

cd haproxy-1.3.17 

make TARGET=linux26 

cp /path/to/haproxy-1.3.17/examples/haproxy.init /etc/init.d/haproxy 

chmod +x /etc/init.d/haproxy

Step 2: Create some users for security

We’re going to add a haproxy user and run it in a chroot jail. Be sure to read up on other security measures for your server.

useradd haproxy 

mkdir /var/chroot/haproxy 

chown haproxy:haproxy /var/chroot/haproxy 

chmod 700 /var/chroot/haproxy

Step 3: Configure /etc/haproxy.cfg

This will be a simple load balancing. The HAProxy server will listen to 1 IP and distribute to 2 servers.

global
maxconn	 10000 # Total Max Connections.
log	 127.0.0.1	local0
log	 127.0.0.1	local1 notice
daemon
nbproc	 1 # Number of processes
user	 haproxy
    	group	 haproxy
    	chroot	 /var/chroot/haproxy

defaults
log	 global
option tcplog
mode	 tcp
clitimeout	60000
srvtimeout	30000
contimeout	4000
retries	 3
redispatch
option	 httpclose 

listen	load_balanced	192.168.0.2:80,192.168.0.2:443
balance	 source
option	 ssl-hello-chk
option	 forwardfor

server webserver1 192.168.0.10 weight 1 maxconn 5000 check
server webserver2 192.168.0.20 weight 1 maxconn 5000 check

listen  admin_stats 192.168.0.2:8080
mode	 http
stats uri	/my_stats
stats realm 	Global\ statistics
stats auth 	username:password

Start up HAProxy by /etc/init.d/haproxy start.

Step 4: Configuring logging

Edit /etc/sysconfig/syslog

SYSLOGD_OPTIONS=”-m 0 -r”

Edit /etc/syslog.conf. Add the following:

local0.* /var/log/haproxy.log
local1.* /var/log/haproxy-1.log

Restart Syslog

service syslog restart

1. Do an SVN hotcopy so you get all your stuff
2. tar up the entire directory
3. split and bzip the files using p7zip so they can fit on hosted drives ( 2 Gb files )
4. copy them to S3 or any online service

Commands:

/usr/bin/svnadmin hotcopy /path/to/svn/repository /path/to/destination

tar cvf /path/to/backup/svnbackup-`date +%Y-%m-%d`.tar /path/to/destination/*

/usr/local/bin/7z a -tbzip2 -v2g svnbackup-`date +%Y-%m-%d`.tar.bz2 /path/to/backup/svnbackup-`date +%Y-%m-%d`.tar

Copy them over using any scripts you have. I personally use jstream on a linux server to move stuff to Amazon S3

I’ve been working on the API documentation for many of the services but here are a few that can be usefull: Click-To-Call API, Dialer API, Phone call API, Telephone API, Call center API and Voice broadcast API.