Category: Operating System

How to install Rockmongo on Ubuntu 16

Rex Adrivan1 Comment

Rockmongo: RockMongo is a MongoDB administration tool, written in PHP 5.

Step 1: Install Apache

Apache is a free open source software which runs over 50% of the world’s web servers.

To install apache, open terminal and type in these commands:
sudo apt-get update
sudo apt-get install apache2

That’s it. To check if Apache is installed, direct your browser to your server’s IP address (eg. http://12.34.56.789). The page should display the words “It works!”

How to Find your Server’s IP address

You can run the following command to reveal your server’s IP address.
ifconfig eth0 | grep inet | awk '{ print $2 }'

 

Step 2: Install MySQL

 

To install MySQL, open terminal and type in these commands:

sudo apt-get install mysql-server libapache2-mod-auth-mysql php5-mysql

During the installation, MySQL will ask you to set a root password.

Step 3: Install PHP

PHP is an open source web scripting language that is widely use to build dynamic webpages.

To install PHP, open terminal and type in this command.
sudo apt-get install php5 libapache2-mod-php5 php5-mcrypt

 

Step 3: Install Rockmongo

RockMongo is a MongoDB administration GUI tool, written in PHP 5.
You can read more at here.

So, first you need to install php-mongo on Ubuntu
Install PHP Pear package;

sudo apt-get install php-pear

 

Then, install PHP-Mongo driver that connects PHP and MongoDB;

sudo apt-get install php5-dev
sudo apt-get install libpcre3 libpcre3-dev
 
sudo pecl install mongo

 

 

Then, configure PHP-Mongo driver in Apache2

nano etc/php5/apache2/php.ini

add line below;

extension=mongo.so

 

Restart Apache2 server

sudo service apache2 restart

Then, download Rockmongo from web
http://rockmongo.com/downloads

Extract to /var/www/ folder

check the installation

http://127.0.0.1/rockmongo

Installing google chrome on Ubuntu

Rex AdrivanLeave a comment

google-chrome-stable is availeble on 3rd Party Repository: Google Chrome (For Stable).

Follow the instruction for installation:

  1. Add Key: 
    wget -q -O - https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo apt-key add -
  2. Set repository: 
    sudo sh -c 'echo "deb http://dl.google.com/linux/chrome/deb/ stable main" >> /etc/apt/sources.list.d/google.list'
  3. Install package: 
    sudo apt-get update 
sudo apt-get install google-chrome-stable

Fixing Email server on webuzo

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It is deployed along with Exim – the SMTP Email Server, which can be installed by a click from the Webuzo Enduser Panel >> Apps >> Utilities Category

Guide : http://www.webuzo.com/wiki/Install_System_Apps

Accessing SquirrelMail is as simple as a pie with Webuzo.
Guide : http://webuzo.com/wiki/Access_Emails

Issue # 1
You can face the “Error connecting to IMAP server: example.com.
111 : Connection refused” Error id Dovecot service is not installed on your server.
Squirrel IMAP Error

Fix for the same is to quickly install Dovecot by a click from the Webuzo Enduser Panel >> Apps >> Utilities Category
Guide : http://www.webuzo.com/wiki/Install_System_Apps

Restart the Dovecot Service to avoid other issues:
Guide : http://webuzo.com/wiki/Restart_services

From the command line:
service dovecot restart

Installing Webuzo on a fresh ubuntu server

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Goal: Install web panel on your VPS server

Reason:   lets you focus on using apps rather than spending time on installing them. Install PHP, PERL, JAVA, JavaScript applications to your domain with just a click of a button.

  1. Login to your SSH
  2. Update your Operating System 
    • apt-get update
  3. Download and install Webuzo

Installation

Open a Shell Terminal (e.g. PuTTY) and SSH to your server. Run the following commands:

wget -N http://files.webuzo.com/install.sh
chmod 0755 install.sh

./install.sh     // This will install the LAMP Stack, DNS Server and FTP server along with Webuzo

OR

./install.sh --install=lamp,bind // This will install the LAMP Stack(softname -> lamp) and DNS Server 
                                    (softname -> bind) along with Webuzo.
                                    Note : softname for Apps should be comma separated.
                                    Get list of softnames for the Apps here : http://api.webuzo.com/apps.php

OR

./install.sh --install=none // This will install only Webuzo without any LAMP Stack.
                               You can later install apps from the Apps Category in the Enduser Panel.

For more information on installing you can check the manual at

Webuzo Website manual

Combining multiple wireless internet connection

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Wanted to find out if it’s possible to combine internet connection so I tried this connectify dispatch application.
You can google it and try if it works on your system.

This is the number of connections that I saw on the connection tab .

Wireless connection tab
Wireless connection tab

I don’t find this successful because it did not maximize the speed of my internet connection.
Maybe the setup is not configured correctly that’s why I did not meet the desired result. But you can see the result of combined wireless connections on the image below. By the way I am using the old connectify dispatch app. The latest app is the speedify which is not free and will cost you a montlhy subscription.

Combining wireless conections
Combining wireless conections

How to install Node.js on centos6

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How To Install And Run A Node.js App On Centos 6.4 64bit

Introduction

This article outlines the steps necessary to run a “Hello world” in node.js + express, running on a 64bit Centos 6.4 installation. We will be building the latest version of source (at this moment, v0.10.4) from the upstream provider.

As is written on their homepage, Node.js is a platform built on Chrome’s JavaScript runtime for easily building fast, scalable network applications. This is a fast, event driven platform and server-side Javascript engine used for building web applications. DigitalOceans’ droplets are a cost-effective way to install and start studying server-side Javascript and bulding or deploying web applications with Node.js.

Setup a VPS

To get started, we will need a droplet – the smallest instance will do just enough – and a SSH client (ie. Putty on Windows, Linux systems and Mac Os X usually have it out of the box). When we receive our initial root password, we can ssh into the instance. SSH into the VPS and change the root password, if you haven’t already. It would probably be a good idea to also update software repository to the latest versions:

yum -y update

This will update installed software on our VPS to the latest versions.

Yum can take a few minutes, but when it’s done, we need to prepare for software installation. We’re going to build Node.js from the latest source available at the moment of writing this (v0.10.4). To do that, we’ll need “Development Tools”. It’s a group of tools for compiling software from sources.

yum -y groupinstall "Development Tools"

This command will pull a “Development Tools” group with the applications needed to compile node.js.

Also, we’ll install GNU screen – a piece of software that allows us to connect to our VPS, start a session and detach from it. We could disconnect and connect later, or from another workstation, and pick up where we left. It’s very handy, especially during development of an app, when we want to learn stuff.

yum -y install screen

Node.js installation

Now that we’re ready to install Node.js from sources. First, we’ll move to /usr/src directory – the usual place to hold software sources.

cd /usr/src

Now, we pick the latest compressed source archive from Node.js website at http://nodejs.org/download/.

wget http://nodejs.org/dist/v0.10.4/node-v0.10.4.tar.gz

We could and should replace the url and use the more recent version of node.js, if there is one. Next, we are uncompressing the source files and move into that directory.

tar zxf node-v0.10.4.tar.gz
cd node-v0.10.4

Now the source for Node.js is extracted and we’re in the source directory. We can now prepare our compiler commands, by executing the configure script:

./configure

It will read the properties of our system to prepare compiler flags. Ie. it could be a system architecture (32/64bit, CPU specific flags etc). With it, we’re ready to actually compile the source now. To do that, just type:

make

This is probably the most time-consuming task here: on my example VPS it took about 6 minutes and 34 seconds to complete. When we’re done, we need to make this available system-wide:

make install

The latest command will place the compiled binaries in system path, so all users could use it without any further setup. By default, node binary should be installed in /usr/local/bin/node.

Install Express.js

We now have Node.js installed and complete, we can start developing right away, deploy an already done application or we can proceed to create our Express.js application. First, we’ll use npm, nodes’ module manager, to install express middleware and supervisor – a helpful module that keeps our app started, monitors for file changes (ie. when we’re developing the app) and restarts the VPS when needed.

UPDATE: To be able to run an executable in /usr/local/bin through sudo, you have add /usr/local/bin to your secure_path using visudo.

sudo visudo

Look for secure_path, and append the following to it: “:/usr/local/bin”. Once you have done that, you’re now ready to install the express and supervisor modules.

npm -g install express express-generator supervisor

npm -g install will install the express and supervisor modules from npm software repository and make it available to the whole system. The -g switch in this command means “global” – the express and supervisor commands will be available accross the whole system.

Add non-privileged user

You should now, for security reasons, create a regular system user and run node under non-privileged account.

To do this, add the user first. You can replace “exampleuser” with whatever name your prefer.

useradd exampleuser

We have a new system user. Add a decent password for the new user:

passwd exampleuser

Log out, and log back in as the new user.This changes our login shell from root (system user) to exampleuser (non-privileged user who can compromise the system with less damage).

Creating an express app

Express is powerfull framework, and to create our first application, all we have to do is type:

express hello

The command will create a “hello” directory and setup some basics for a new application. Now we should enter this directory and install express dependencies:

cd hello && npm install

npm install part of the command will read all the module dependencies from a generated package.json file and install it from npm software repository.

We should start a new screen session so we can leave node app running:

screen

Finally, we can start our application with the help of supervisor that we installed earlier.

supervisor ./bin/www

Now we’re able to access our first express app at your VPS IP. For example http://123.456.78.90:3000/.

How to install Ruby on Rails in Centos 6.5

Rex AdrivanLeave a comment

Introduction

Ruby on Rails

Ruby on Rails is one of the most popular web development framework, it’s build upon Ruby Programming Language, and it’s the hottest web development stack currently.

Rbenv

Rbenv is a shell script tools created by Sam Stephenson. It’s used for groom your app’s Ruby environment.Use rbenv can pick a Ruby version for your application and guarantee that your development environment matches production.

rbenv works by inserting a directory of shims at the front of your PATH:

 ~/.rbenv/shims:/usr/local/bin:/usr/bin:/bin

Through a process called rehashing, rbenv maintains shims in that directory to match every Ruby command across every installed version of Ruby—irb, gem, rake, rails, ruby, and so on.

CentOS

CentOS is derived from Red Hat Enterprise Linux. The target users of these distributions are usually businesses, which require their systems to be running the most stable way for a long time.So we are going to use CentOS 6.5 running our applications.

Step One – Install dependencies

Before, installing any package, it’s always recommended to update package repository cache use yum.

 sudo yum update

Now,in order to get necessary development tools and dependencies, run the following:

 sudo yum groupinstall -y 'development tools'
 sudo yum install -y gcc-c++ glibc-headers openssl-devel readline libyaml-devel readline-devel zlib zlib-devel  sqlite-devel

Step Two – Install Rbenv and ruby-build

Then we are ready to get Rbenv downloaded installed, run the following to check out rbenv into ~/.rbenv:

 git clone git://github.com/sstephenson/rbenv.git ~/.rbenv

Add ~/.rbenv/bin to your $PATH for access to the rbenv command-line utility:

 echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bash_profile

Add rbenv init to your shell to enable rbenv shims and autocompletion.

 echo 'eval "$(rbenv init -)"' >> ~/.bash_profile

Ruby-build is a Rbenv plugin which provides the rbenv install command that simplifies the process of installing new Ruby versions. Install rbenv-build:

 git clone https://github.com/sstephenson/ruby-build.git ~/.rbenv/plugins/ruby-build

reloaded your bash_profile to enable rbenv command:

 source ~/.bash_profile

Step Three – Install Ruby

Install Ruby 2.1.0 and make it the default

 rbenv install 2.1.0
 rbenv rehash
 rbenv global 2.1.0

Now you can run:

 ruby -v

to verify your ruby environment has been installed successful。 It will output something like this:

 ruby 2.1.0p0 (2013-12-25 revision 44422) [x86_64-linux]