Free SSL Certbot

Certbot, It was Let’s Encrypt Client previously. Automatically enable HTTPS on your website with EFF’s Certbot, deploying Let’s Encrypt certificates.

Server Support

– Apache
– Nginx
– Haproxy
– Plesk

OS Support

– Web Hosting Service
– Debian 7 (wheezy)
– Debian 8 (jessie)
– Debian 9 (stretch)
– Debian testing/unstable
– Debian (other)
– Ubuntu 17.04 (zesty)
– Ubuntu 16.10 (yakkety)
– Ubuntu 16.04 (xenial)
– Ubuntu 14.04 (trusty)
– Ubuntu (other)
– Gentoo
– Arch Linux
– Fedora 24+
– CentOS 6
– RHEL 6
– CentOS/RHEL 7
– FreeBSD
– OpenBSD 5.9
– OpenBSD 6.0+
– OpenBSD (other)
– macOS
– Devuan Jessie 1.0
– Devuan (other)
– Other UNIX
– Non-UNIX

Install on Ubuntu 17.04 (zesty) Apache

$ sudo apt-get update
$ sudo apt-get install software-properties-common
$ sudo add-apt-repository ppa:certbot/certbot
$ sudo apt-get update
$ sudo apt-get install python-certbot-apache

Get Started

$ sudo certbot --apache

$ sudo certbot --apache certonly

Automating renewal

$ sudo certbot renew --dry-run

$ sudo crontab -e

30 1 * * * /usr/bin/certbot renew --quiet

It will run renewal command at 1:30 am, every day.

Install Red5 Media Server on Ubuntu / Debian

Red5 is free media server based on Java and other open source frameworks. It support FLV, F4V, MP4, 3GP, MP3, F4A, M4A, AAC and protocols like RTMP, RTMPT, RTMPS, RTMPE.

Install Red5 Media server
# apt-get install red5-server

Red5 Need below ports open in firewall / iptable
RTMP: 1935
Debug proxy: 1936
HTTP servlet: 5080
RTMPT: 8088

Red5 Installed location

Red5 application in the location

Install demo Red5 Applications
# wget
# mkdir red5/
# cd red5
# unzip ../
# cd red5-server-1.0/
# cp -R webapps/root/demos /var/lib/red5/webapps/root/demos
# cp -R webapps/installer /var/lib/red5/webapps/installer
# find /var/lib/red5/webapps/ -type d -exec chown _red5 {} \;
# /etc/init.d/red5-server restart

Red5 Installer

Red5 Demo

Live video stream event for online Temple or Church

Wowza / Red5 Streaming Live Video with Flash Media Live Encoder

Live Video Stream will be coming
Wowza Live Stream Countdown


– A computer running Windows or Apple operating system
– Software “Flash Media Live Encoder (Adobe)”
– Streaming Server (Wowza/Red5/FMS)
– Video input that is recognized by the operating system (i.e. USB camera)
– Video player: VLC or Web Player (JWplayer/Flowplayer/OSMPlayer)

1) Download the free Flash Media Live Encoder

2) Install the Flash Media Live Encoder

3) In the program
– Preset choose bandwidth
– Device Select your video/audio source device
– Choose Video Format H.264
– Choose Audio Format MP3

Enter Stream to Flash Media Server streaming data from your provider

FMS URL: rtmp://[Media-Server-IP-Address]:[Port]/live
Stream: livestream


4) Click on “connect”
You will get a pop-up window, enter your username and password you of your received media streaming provider.

5) Click “start” and that’s all!


6) Open stream link to your video player that has received.


Get more help to setup Live video stream event on mobiles (iOS/Androids) using Wowza or Red5 Contact Us

Install Wowza Media Server for Google Compute Engine

Hope you really enjoyed our articles about Google Compute Engine..

Install Apache, PHP, MySQL on Google Compute Engine

Build your business on Google Cloud Platform

Install Red5 on Google Compute Engine

First you need to install Google Cloud platform command-line tools

$ wget
$ sudo apt-get install unzip

$ export PATH=${PATH}:$HOME/gcutil-1.9.1
$ sudo ln -s /usr/local/share/gcutil-1.9.1/gcutil /usr/local/bin/gcutil

Then make sure you have Ports used for Wowza streaming

TCP 1935: RTMP (all variants)
TCP 8084-8085: JMX/JConsole monitoring and administration
TCP 8086: HTTP administration
TCP 80: Apple HTTP Live Streaming (Apple HLS), Adobe HTTP Dynamic Streaming (Adobe HDS), Microsoft Smooth Streaming, MPEG-DASH streaming, RTMPT

$ gcutil addfirewall red5 –description=”Let open port 5080.” –allowed=”tcp:5080″
$ gcutil addfirewall rtsp –description=”Let open 554 rtmp port.” –allowed=”tcp:554″
$ gcutil addfirewall rtmp –description=”Let open 1935 rtmp port.” –allowed=”tcp:1935″
$ gcutil addfirewall http2 –description=”Let open port 5080.” –allowed=”tcp:8086″
$ gcutil getfirewall

Check Java Version or Install

$ sudo apt-get update
$ sudo apt-get install java-package
$ sudo apt-get install openjdk-6-jdk
$ sudo apt-get install openjdk-6-jre

Now read Install Wowza Examples

Download Wowza and install examples

$ wget
$ chmod +x WowzaMediaServer-3.6.2.deb.bin
$ ./WowzaMediaServer-3.6.2.deb.bin
$ cd /usr/local/WowzaMediaServer/bin
$ sudo ./
$ cd /usr/local/WowzaMediaServer-3.6.2/examples
$ sudo chmod +x
$ sudo ./

$ sudo service WowzaMediaServer start

Please check Wowza Forum for more help…

Wowza Live Cam Secure Expired Token

Wowza Live Cam Secure Expired Token
Wowza Live Cam Secure Expired Token

// Encrypt original stream URL http://wowza-server:port/stream/playlist.m3u8
$base64ized = encryptDecrypt($secret_key, $streamURL, 0);

// Decrypt stream URL
$streamURL = encryptDecrypt($secret_key, $base64ized, 1);


// Expire stream URL after time interval & check secure token
if (($current – $timestamp) <= $expired && ($checkhash == $hash)) { include("m3u8.php"); } m3u8.php

header(“content-type: application/”);
echo file_get_contents(“http://wowza-server:port/stream/playlist.m3u8”);

Backup Disk Snapshot on Google Compute Engine

Snapshots are stored in Google Cloud Storage, which is secure, incredibly large, and remarkably inexpensive. You might want to think about whether the labor involved in saving snapshots on your local PC, with all the attendant risks of data loss.

For pricing, see For example, if you have a 10 GB snapshot, that’s going to cost you $0.85/ month.

Overview Google Compute Engine
Overview Google Compute Engine

You can read more about here ….

1) Create a snapshot with the gcutil getsnapshot command.

$ gcutil addsnapshot red5 –source_disk red5 –zone us-east1-a

Snapshot Google Compute Engine
Snapshot Google Compute Engine

2) Create a new persistent disk with that snapshot

Disk Google Compute Engine
Disk Google Compute Engine

3) Create an instance with that persistent disk

Instance on Google Compute Engine
Instance on Google Compute Engine

4) Create an image of that instance

Operations Google Compute Engine
Operations Google Compute Engine

5) Save the image on the instance

$ sudo python /usr/share/imagebundle/ -b red5 -o /tmp

6) Download the image of the instance

You can find archived image in current user folder i.e. /home/svnlabs/red5/096df5a918c746f965338bda6b4c886ac4097c08.image.tar.gz


PHP Run Background Process using Exec

If you need to start process in background and get its PID to manage it later using PHP.


function runInBackground($command,$log,$priority=0)
   $PID=shell_exec("nohup nice -n $priority $command > $log 2>&1 & echo $!");
   $PID=shell_exec("nohup $command > $log 2>&1 & echo $!");

PHP Process
PHP Process

echo $! will return process ID
# Command & echo $!


Check if process is running


function isProcessRunning($PID)

if($PID==0)return false;
if($PID=="")return false;

exec("ps -p $PID 2>&1",$state);




Display Process Logs


function displayProcessLog($logfile)

exec('cat $logfile 2>&1',$log);
return implode("\r\n",$log);




Kill Process


function killProcess($PID)
 exec('kill '.$PID.' 2>&1',$status);
 return implode("\r\n",$status);



Save Process ID to file

Command &
echo $! >/path/to/pid.file

Install Red5 on Google Compute Engine

Yesterday we have installed basic web server (apache, php, mysql) on Google Compute Engine. Today our target is to install Red5 on Ubuntu server for Google Compute Engine.

First we need to check Java version installed on Google Compute Engine

$ java -version
The program ‘javac’ can be found in the following packages:

* default-jdk
* ecj
* gcj-4.6-jdk
* openjdk-6-jdk
* gcj-4.5-jdk
* openjdk-7-jdk
Ask your administrator to install one of them

Now you have to install java using

$ sudo apt-get update
$ sudo apt-get install java-package
# sudo apt-get install openjdk-6-jdk
$ sudo apt-get install openjdk-6-jre

Install Ant

$ sudo apt-get install ant

Install Subversion

$ sudo apt-get install subversion

You can download latest Red5 from here

$ sudo wget
$ sudo tar xvfz red5-1.0.0.tar.gz
$ sudo mv red5-1.0.0 red5
$ sudo mv red5 /usr/share/

Now try to run Red5 Server

$ cd /usr/share/red5
$ sudo sh

Yeah! Firewall always block you to access red5 port 5080 so please allow port 5080 & 1935 using below commands

$ gcutil addfirewall red5 –description=”Let open port 5080.” –allowed=”tcp:5080″

$ gcutil addfirewall rtmp –description=”Let open 1935 rtmp port.” –allowed=”tcp:1935″

$ sudo sh

Check Red5 is running

$ sudo netstat -ant
Find port 5080 Listening

Now try http://your-server-address:5080 in a web-browser.

Red5 on Google Compute Engine
Red5 on Google Compute Engine

Install oflaDemo from installer http://your-server-address:5080/installer/ then check 😉

Red5 Demo on Google Compute Engine - Port Tester
Red5 Demo on Google Compute Engine – Port Tester

Install Webmin on Google Compute Engine

$ sudo wget
$ sudo gunzip webmin-1.610.tar.gz
$ sudo tar xf webmin-1.610.tar
$ sudo cd webmin-1.610
$ sudo ./ /usr/local/webmin

Open port 10000 using gcutil addfirewall

$ gcutil addfirewall webmin –description=”Let coordinator and snitches chatter.” –allowed=”tcp:10000″

Install Apache, PHP, MySQL on Google Compute Engine

I am so happy to get access for Google Compute Engine Limited Preview 🙂

Google Compute is a service that provides virtual machines on Google infrastructure. Google Compute (virtual machines with distributed computing power) provides some options that enable to configure, deploy, and manage multiple virtual machines in multiple data centers.

– Command-line tool called gcutil
– SSH Keys

Instructions on Installing and using gcutil; the command-line tool that is used to manage your Google Compute resources.

Run virtual machines at Google Scale

Google Compute Engine offers scalable and flexible virtual machine in the cloud to solve large scale processing and analytic problems on Google’s computing, storage, and networking infrastructure.

Google Compute Engine
Google Compute Engine

You need to generate your keys using ssh-keygen.. check more details here

Google Compute Engine - Add ssh Keys
Google Compute Engine – Add ssh Keys

You SSH Keys looks something like ….

ssh-rsa DfgdfeDFDFdghGHg ……………………..

Then you can login to server using Google Compute Engine’s external IP and PPK (Private key for authentication) file..


If all goes well you will get nice screen 😉

SSH Google Compute Engine using SSH Keys
SSH Google Compute Engine using SSH Keys

This is typical Ubuntu server and you can easily install Apache, PHP, MySQL here

First I tried “Hello World” Application provided in instructions

Before installing Apache you need to add port 80 to firewall 😉

$ gcutil addfirewall http2 –description=”Incoming http allowed.” –allowed=”tcp:http”
INFO: Waiting for asynchronous operation to complete. Current status: RUNNING. Sleeping for 5s.

$ gcutil getfirewall http2

Install Apache HTTP Server

$ sudo apt-get update

$ sudo apt-get install apache2

Install PHP & MySQL

$ sudo apt-get install apache2 mysql-server php5 php-pear php5-suhosin php5-mysql

$ sudo apt-get install php5 libapache2-mod-php5

Restart Apache

$ sudo /etc/init.d/apache2 restart

Install PHPMyAdmin

$ sudo apt-get install phpmyadmin

Follow steps for phpmyadmin 😉

Set mysql root password

$ mysql -u root

mysql> SET PASSWORD FOR ‘root’@’localhost’ = PASSWORD(‘yourpassword’);

Your Apache, PHP, MYSQL and phpMyAdmin is ready in Ubuntu on Google Compute Engine, start clouding….

Build your business on Google Cloud Platform

Hope you already read my old article “Application Setup on Google App Engine”

Google Cloud Platform allows to build applications and websites, store and analyze data on Google’s infrastructure.

Google Cloud Platform
Google Cloud Platform

Features of Google Cloud Platform

* Scale your app – Take advantage of the speed and scale of Google’s applications.

* Focus on building – Deal with capacity planning and data center infrastructure.

* Save on costs – Pay only for what used.

* Fast Data Access – Quick and easy access to data around multiple regions.

* Reliable & Secure infrastructure – Google provides highly available, robust storage for your mission-critical data.

* Unlimited Storage – Store and manage unlimited number of objects within Application.

* Fully managed – Google will take care of replication, patch management or database management.

Solutions on Google Cloud Platform

Google App Engine
Google Cloud Storage
Google BigQuery
Google Cloud SQL
Google Compute Engine
Google Prediction API
Google Translation API

Google Cloud Platform
Google Cloud Platform

Over 1M applications run on Google Cloud Platform

Build Apps and Websites – Build apps and websites on Google’s infrastructure with Google App Engine.

Compute at Google Scale – Run Linux Virtual Machines in the cloud using Google Compute Engine.

Store your Data – Store and manage data on Google’s infrastructure with Google Cloud Storage.

Analyze Big Data – Analyze Big Data at astonishing speed using Google BigQuery.

Mobile Apps using Google App Engine

Google App Engine provide friction-less development environment to makes scale-able mobile back-end on Google’s infrastructure with less worries.

It goes live fast, scale infinitely and get started easily…

Business on Google Cloud Platform

Business on Google Cloud Platform
Business on Google Cloud Platform

You can download SDK to start building your app on Google App Engine.

If you are interested for creating Applications on Google Cloud Platform … Please Contact us

Email: svnlabs[at]
Skype: svnlabs
MSN: svnlabs[at]