Administrations

Install ionCube Loader on a CentOS 7

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1. Log in to your CentOS 7 VPS via SSH as user root

# ssh root@IP_Address

and update all installed services

# yum update

2. Run the ‘arch’ command in the terminal to check if your system is 32-bit (i686) or 64-bit (x86_64)

# arch
x86_64

3. In our case the system is 64-bit and we will download the 64-bit version of ionCube Loader

# wget http://downloads3.ioncube.com/loader_downloads/ioncube_loaders_lin_x86-64.tar.gz

4. If your system is 32-bit download the following archive

# wget http://downloads3.ioncube.com/loader_downloads/ioncube_loaders_lin_x86.tar.gz

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Install Zoneminder on Ubuntu 18.04 with shell script

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This will install Zoneminder by using a shell script with one basic command (how easy is that!).

You will need a Ubuntu 18.04 install with LAMP (Apache, MySQL and PHP) installed desktop or server. As an alternate you may use Mariadb in lieu of MySQL

Shell script file contents:

#!/bin/sh
clear
read -p "This script installs Zoneminder 1.32.x on Ubuntu 18.04 AMD64 with LAMP (MySQL) installed...
Press Enter to continue or Ctrl + c to quit" nothing
clear
read -p "You must be logged in as root using sudo su ...
Press Enter to continue or Ctrl + c to quit" nothing
clear
read -p "Next we will add the PPA repository, install and configure the system to run Zoneminder. 
Press enter to continue" nothing
apt install -y software-properties-common
clear
add-apt-repository ppa:iconnor/zoneminder-1.32
apt update
clear
awk '$0="date.timezone = "$0' /etc/timezone >> /etc/php/7.2/apache2/php.ini
clear
apt install -y zoneminder
systemctl enable zoneminder
service zoneminder start
adduser www-data video
a2enconf zoneminder
a2enmod rewrite
chown -R www-data:www-data /usr/share/zoneminder/
service apache2 reload
clear
read -p "Install complete.Press enter to continue" nothing
clear

Copy the contents of the script, open a terminal and run:

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SNMP Client Configuration for Observvium

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This can be placed in /etc/snmp/snmpd.conf and will provide the required parameters for Observium. This example use version 2c snmp auth.

Community string: Replace community_string with your unique community string.

# Listen for connections on all interfaces (both IPv4 *and* IPv6)

agentAddress udp:161,udp6:[::1]:161

# Full view access
view all included .1

# system + hrSystem groups only
view systemonly included .1.3.6.1.2.1.1
view systemonly included .1.3.6.1.2.1.25.1

# Default access to full view
rocommunity community_string default -V all

# Default access to basic system info
#rocommunity public default -V systemonly

# System contact and location
syslocation Rack/Room/Building, Street, City, Country [GPSX,Y]
syscontact Contact Person <your@email.address>

# Disk Monitoring
disk / 10000
disk /var 5%
includeAllDisks 10%

# Unacceptable 1-, 5-, and 15-minute load averages
load 12 10 5

# This line allows Observium to detect the host OS if the distro script is installed
extend .1.3.6.1.4.1.2021.7890.1 distro /usr/local/bin/distro

# This lines allows Observium to detect hardware, vendor and serial
extend .1.3.6.1.4.1.2021.7890.2 hardware /bin/cat /sys/devices/virtual/dmi/id/product_name
extend .1.3.6.1.4.1.2021.7890.3 vendor /bin/cat /sys/devices/virtual/dmi/id/sys_vendor
extend .1.3.6.1.4.1.2021.7890.4 serial /bin/cat /sys/devices/virtual/dmi/id/product_serial

# This line allows Observium to collect an accurate uptime
extend uptime /bin/cat /proc/uptime

# This line enables Observium's ifAlias description injection
pass_persist .1.3.6.1.2.1.31.1.1.1.18 /usr/local/bin/ifAlias_persist

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Install Proxmox VE 6 on Debian 10 (Buster)

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Proxmox Virtual Environment (VE) is an enterprise-grade open-source server virtualization solution based on Debian Linux distribution with a modified Ubuntu LTS kernel. It allows you to deploy and manage both virtual machines and containers.

This setup presumes you have a running Debian 10 Buster Linux server running. If you don’t have one, follow our guide to Install Debian 10 on a dedicated server that will be used as a hypervisor. Please note that you need a 64-bit processor with support for the Intel 64 or AMD64 CPU extensions.

Below are the steps you’ll follow through to install Proxmox VE 6 on Debian 10 (Buster).

Step 1: Update Debian OS

Update apt package index before getting started.

sudo apt -y update
sudo apt -y upgrade
sudo reboot

Step 2: Set system hostname

We need to set the hostname and make sure it is resolvable via /etc/hosts.

sudo hostnamectl set-hostname prox6node01.example.com --static
echo "10.1.1.10 prox6node01.example.com prox6node01" | sudo tee -a /etc/hosts

example.com should be replaced with a valid domain name.

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How to Install and Configure GitLab on Ubuntu 16.04

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GitLab is an open source GIT repository manager based on Rails and developed by GitLab Inc. It is a web-based GIT repository manager that allows your team to work on code, track bugs and feature requests and to test and deploy applications. GitLab provides features like a wiki, issue tracking, code reviews, activity feeds and merge management. It is capable of hosting multiple projects.

GitLab is available in four editions:

  • Gitlab CE (Community Edition) – self-hosted, free and support from the Community forum.
  • Gitlab EE (Enterprise Edition) – self-hosted, paid app, comes with additional features.
  • GitLab.com – SaaS, free.
  • GitLab.io – Private GitLab instance managed by GitLab Inc.

In this tutorial, I will show you step-by-step how to install GitLab CE (Community Edition) on your own Ubuntu 16.04 Xenial Xerus server. In this tutorial, I will be using the ‘omnibus’ package provided by GitLab for easy installation.

What we will do:

  • Install Packages
  • Install GitLab
  • Configure GitLab URL
  • Generate SSL Let’s encrypt and DHPARAM Certificate
  • Enable Nginx HTTPS for GitLab
  • Configure UFW Firewall
  • Perform the GitLab Installation
  • Testing

Prerequisites

  • Ubuntu 16.04 Server – 64bit
  • Min RAM 2GB
  • Root Privileges

Step 1 – Install required Ubuntu Packages
The first step is to install the packages needed for the GitLab installation. Please log in to the server as root user and upddate the Ubuntu repository.

ssh root@GitLabServer
apt-get update

Now install the packages including curl for downloading the GitLab repository, ca-certificates, and postfix for the SMTP configuration. Install all packages with the apt command below.

sudo apt install curl openssh-server ca-certificates postfix

During postfix installation, you will be prompted about the configuration, select ‘Internet Site’. and then enter the server domain name that shall be used for sending an email.

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Add a User To Group www-data ( Apache Group )

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The procedure is as follows:

  • Open the terminal application.
  • Login to Ubuntu server using ssh.
  • Add a new user named foo to www-data group by running useradd -g www-data foo command.
  • Add an existing user bar to Apache’s www-data group on Ubuntu using usermod -a -G www-data bar command.
  • Verify new modification on Linux by using the id command.

Let us see all commands in details.

How to see a list of www-data members

To see list of all members of a group named www-data, run the following grep command on /etc/group file:

grep ^www-data /etc/group

Sample outputs:

www-data:x:33:

How do I add an existing user named vivek to group Apache group www-data?

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Install Laravel 5 Framework on Ubuntu 18.04 & 16.04

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Below is the system requirements for the installation of latest Laravel application on your system.

PHP >= 7.2
OpenSSL PHP Extension
PDO PHP Extension
Mbstring PHP Extension
Tokenizer PHP Extension
XML PHP Extension
Ctype PHP Extension
JSON PHP Extension
BCMath PHP Extension

Step 1 – Install LAMP

To start with Laravel, we first need to set up a running LAMP server. If you have already running LAMP stack skip this step else use followings commands to set up the lamp on Ubuntu system.

sudo apt-get install python-software-properties
sudo add-apt-repository ppa:ondrej/php
sudo apt-get update
sudo apt-get install -y php7.2 php7.2-mcrypt php7.2-gd php7.2-mbstring php7.2-xml

Install PHP Mcrypt Extension & Install Apache2

sudo apt-get install apache2 libapache2-mod-php7.2

Install MySQL

sudo apt-get install mysql-server php7.2-mysql

Step 2 – Install Composer

The composer is required for installing Laravel dependencies. So use below commands to download and use as a command in our

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Resizing a VirtualBox Virtual Hard Disk

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Prerequisites
Before you start this procedure you’ll need to do the following.

  • Make sure you have the VBoxManage command-line tool installed on your host system.
  • Download the ISO for a GParted Live CD or else a Linux Live CD using a Linux distribution that includes the GParted partition editor utility.
  • IMPORTANT: If the virtual disk you want to resize is attached to a virtual machine with snapshots, you will need to delete these snapshots so that all disk state information is merged into the base virtual disk VDI file.
  • Resize the virtual disk (VirtualBox version 4.0+ only)
    If you are using VirtualBox version 4.0 or later, you can resize the logical capacity of a virtual disk using the VBoxManage modifyhd –resize command.

On the host system, run the following command:

cd /path/to/vbox/disks
VBoxManage modifyhd OldDisk.vdi –-resize 30000

where OldDisk.vdi is the filename of the virtual disk VDI file you want enlarge and 30000 is the new maximum size (in megabytes) of the virtual disk.

If your host OS is Windows, then the commands you need to enter at the Command Prompt will look more like the following.

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How to Setup a Multi-Protocol VPN Server Using SoftEther

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SoftEther VPN is one of the world’s most powerful and easy-to-use multi-protocol VPN software, made by the good folks at the University of Tsukuba, Japan. It runs on Windows, Linux, Mac, FreeBSD and Solaris and is freeware and open-source. You can use SoftEther for any personal or commercial use free of charge.

Step 1: Create a Virtual Server

First, you need to create a DigitalOcean Droplet. As mentioned in SoftEther’s website, SoftEther will work on almost every Linux distro with kernel v2.4 or above,; however it’s recommended to choose one of these distributions: CentOS, Fedora, or Red Hat Enterprise Linux.

Personally I have tried it on Ubuntu, CentOS and Fedora, both 32 and 64 bit editions, and it has worked perfectly.

Step 2: Update your Server Software

Using the command below, update and upgrade your server software packages to the latest version:

Debian / Ubuntu:

apt-get update && apt-get upgrade

CentOS / Fedora:

yum upgrade

Step 3: Download SoftEther

You can download the latest SoftEther server package for Linux from their website:

Download SoftEther

Unfortunately, there is no way of getting the latest version through package managers (or even using a single url) at the moment. Therefore you have to browse their website using a desktop browser to download the package. There are a couple of ways of dealing with this: First, browse their website on your own computer and then depending on your server configuration (OS, x86/x64, etc.) find the link to the appropriate package then use wget to download the package to your server. Alternatively, you can use a terminal based web browser such as lynx to browse the SoftEther website and download the right package.

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