CentOS 6 Archives - Page 2 of 3

June 21, 2018April 2, 2019

How To Install Transmission on CentOS 6

Transmission BitTorrent Client features a simple interface on top of a cross-platform back-end. Transmission is licensed as a free software under the terms of the GNU General Public License (GPL), with parts under the MIT License. Transmission, like any other BitTorrent client allows users to download files from the Internet and upload their own files or torrents. By grabbing items and adding them to the interface, users can create queues of files to be downloaded and uploaded.

This article assumes you have at least basic knowledge of linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple. I will show you through the step by step installation Transmission on CentOS 6.

In this tutorial we will show you how to install and configuration of Transmission on your CentOS 6 server.

Install Transmission on CentOS 6

Step 1. First, you need to enable EPEL repository on your system.

## RHEL/CentOS 6 64-Bit ##
# wget http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
# rpm -ivh epel-release-6-8.noarch.rpm

## RHEL/CentOS 6 32-Bit ##
# wget http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
# rpm -ivh epel-release-6-8.noarch.rpm

Step 2. Install Transmission.

yum -y upgrade
yum -y install transmission transmission-daemon

Step 3. Configure Transmission.

Edit the settings.json file.

#find / -name settings.json
#nano /var/lib/transmission/.config/transmission/settings.json

"rpc-authentication-required": true,
"rpc-enabled": true,
"rpc-password": "mypassword",
"rpc-username": "mysuperlogin",
"rpc-whitelist-enabled": false,

Step 4. Start Transmission

 service transmission start

Installing Transmission from source

Step 1. Install dependencies and some tools we will use.

 yum -y install openssl-devel curl-devel intltool gettext wget nano

Step 2. Install libevent 2.0 dependency.

cd /usr/src
wget https://github.com/downloads/libevent/libevent/libevent-2.0.21-stable.tar.gz
tar zxvf libevent-2.0.21-stable.tar.gz
cd libevent-2.0.21-stable
./configure --prefix=/opt/libevent
make
make install

Step 3. Get and unpack Transmission.

wget https://transmission.cachefly.net/transmission-2.84.tar.xz
tar xvf transmission-2.84.tar.xz
cd transmission-2.84
export PKG_CONFIG_PATH=/opt/libevent/lib/pkgconfig
./configure --prefix=/opt/transmission
make
make install

Step 4. Now we run it once to create the settings.json in ~ (home directory)

 transmission-daemon

Step 5. Kill the appending -HUP to force dump the settings.

 killall -HUP transmission-daemon

Step 6. OK now let’s edit the settings (to your liking) and don’t forget to save.

#cd ~
#nano .config/transmission-daemon/settings.json

"rpc-authentication-required": true,
"rpc-enabled": true,
"rpc-password": "mypassword",
"rpc-username": "mysuperlogin",
"rpc-whitelist-enabled": false,

Step 7. Finally re-run transmission-daemon. It only needs to be run once and then you can access the web interface on the port you setup.

 transmission-daemon

Step 8. Accessing Transmission.

Transmission will be available on HTTP port 9091 by default. Open your favorite browser and navigate to http://yourdomain.com:9091 or http://server-ip:9091. You should be greeted with the Transmission WebUI. After logging in, you will notice that the value for the rpc-password inside the settings.json file will be hashed. If you are using a firewall, please open port 80 to enable access to the control panel.

You have successfully installed Transmission! Now, run the following command to view Transmission’s help guide:

 transmissioncli -h

Congratulation’s! You have successfully installed Transmission. Thanks for using this tutorial for installing Transmission BitTorrent Client on CentOS 6 system. For additional help or useful information, we recommend you to check the official Transmission web site.

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June 21, 2018April 2, 2019

How To Install and Configure HAproxy on CentOS 6

HAProxy is a free and open-source Linux application used for load balancing network traffic. This article assumes you have at least basic knowledge of linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple. I will show you through the step by step installation of HAproxy on CentOS 6.x from source.

In this tutorial we will show you how to install and configuration of HAProxy on your CentOS 6 server.

Install and Configure HAproxy on CentOS 6

Step 1. First add yum repository your system.

HAProxy isn’t available in the default repositories for CentOS. In order for us to be able to install it, we need to either compile it from source (preferred) or add the EPEL repository to our server and install it using Yum.

#CentOS 6 – 32-bit
 rpm -Uvh http://mirror.overthewire.com.au/pub/epel/6/i386/epel-release-6-8.noarch.rpm

#CentOS 6 – 64-bit
 rpm -Uvh http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm

Step 2. Install HAProxy using Yum.

 yum install haproxy

Step 3. Configuring HAProxy.

We have to modify the configuraion file of haproxy i.e. /etc/haproxy/haproxy.cfg as per our requirement. (Change this configuration as your network requirements). For more configuration details check this url.

#nano /etc/haproxy/haproxy.cfg global

log 127.0.0.1 local0
log 127.0.0.1 local1 debug
maxconn 45000 # Total Max Connections. This is dependent on ulimit
user haproxy
group haproxy
daemon

defaults
timeout server 86400000
timeout connect 86400000
timeout client 86400000
timeout queue 1000s

# Configuration for HTTP site
listen http_wpcademy 192.168.2.102:80
mode http
balance roundrobin # Load Balancing algorithm
option httpchk
option forwardfor
server server1 192.168.2.100:80 weight 1 maxconn 512 check
server server2 192.168.2.101:80 weight 1 maxconn 512 check

# Configuration for HTTPS site listen  
https_wpcademy 192.168.2.102:443
mode tcp
balance source# Load Balancing algorithm
reqadd X-Forwarded-Proto:\ http
server server1 192.168.2.100:443 weight 1 maxconn 512 check
server server2 192.168.2.101:443 weight 1 maxconn 512 check

listen stats 192.168.2.102:31337
mode http
option httpclose
balance roundrobin
stats uri /
stats realm Haproxy\ Statistics
stats refresh 5s
stats auth admin:passwd123

Step 4. Once you have configured HAProxy, its time to start the service.

service haproxy start
chkconfig haproxy on

Step 5. Now you will able to browse your applicaiton using the IP of the haproxy server. For haproxy Status dashboard you have to browse the URL: http://192.168.2.102:31337. It will ask you for the username and password. Use the username and password you defined on the configuraion file as “stats auth”.

Congratulation’s! You have successfully installed HAProxy. Thanks for using this tutorial for installing HAProxy on CentOS 6 system. For additional help or useful information, we recommend you to check the official HAProxy web site.

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June 21, 2018April 2, 2019

How To Install ClamAV on CentOS 6

ClamAV is an open source (GPL) antivirus engine designed for detecting viruses, malware and other malicious threats on Linux. It’s easy to use and best for Linux based Web & Mail server. In this article, I will show you through the step by step installation of ClamAV on CentOS 6.x from source.

In this tutorial we will show you how to install and configuration of ClamAV on your CentOS 6 server.

Install ClamAV on CentOS 6

Step 1. First add yum repository your system.

The EPEL repo is enabled by simply installing an RPM. Please use the command below to install the EPEL repository on your CentOS server.

#CentOS 6 – 32-bit
rpm -Uvh http://mirror.overthewire.com.au/pub/epel/6/i386/epel-release-6-8.noarch.rpm

#CentOS 6 – 64-bit
rpm -Uvh http://download.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm

Step 2. Install required ClamAV packages.

 yum install clamav clamd

Step 3. Start the clamd service on system boot.

chkconfig clamd on
service clamd start

Update ClamAV’s signatures:

 freshclam

Step 4. Configuring daily scan.

In this example, I will configure a cronjob to scan the /home/ directory every day:

 nano /etc/cron.daily/clamav_scan

Add following piece of code into clamav_scan file.

#!/bin/bash
SCAN_DIR="/home"
LOG_FILE="/var/log/clamav/manual_clamscan.log"
/usr/bin/clamscan -i -r $SCAN_DIR >> $LOG_FILE

Give our cron script executable permissions:

 chmod +x /etc/cron.daily/clamav_scan

Congratulation’s! You have successfully installed ClamAV. Thanks for using this tutorial for installing ClamAV in CentOS 6 system. For additional help or useful information, we recommend you to check the official ClamAV web site.

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June 21, 2018April 2, 2019

How To Install PPTP VPN on CentOS 6

The Point-to-Point Tunneling Protocol (PPTP) is a method for implementing virtual private networks. PPTP uses a control channel over TCP and a GRE tunnel operating to encapsulate PPP packets. The PPTP specification does not describe encryption or authentication features and relies on the Point-to-Point Protocol being tunneled to implement security functionality. We use PPTP because it is supported natively on almost all devices, Windows, Linux, Android, iOS and Mac OS.

In this tutorial we will show you how to install and configuration of PPTP VPN on your CentOS 6 server.

Install PPTP VPN on CentOS 6

Step 1. First install pptpd

yum install ppp iptables nano
cd /usr/local/src

#For 64bit OS
wget http://poptop.sourceforge.net/yum/stable/packages/pptpd-1.4.0-1.el6.x86_64.rpm
rpm -Uhvpptpd-1.4.0-1.el6.x86_64.rpm

#For 32bit os
wget http://poptop.sourceforge.net/yum/stable/packages/pptpd-1.4.0-1.el6.i686.rpm
rmp -Uhv pptpd-1.4.0-1.el6.i686.rpm

Step 2. Setup pptpd

Edit IP setttings in /etc/pptpd.conf:

#nano /etc/pptpd.conf

localip 192.168.0.1 # your VPS/Dedicated Server IP address 
remoteip 192.168.0.101-200

And the following settings to /etc/ppp/options.pptpd:

ms-dns 8.8.8.8
ms-dns 4.4.4.4

Step 3. Create user to access the VPN server

Add user account in/etc/ppp/chap-secrets (assign username and password):

#nano /etc/ppp/chap-secrets

vpn pptpd vpnpassword *

Step 4. Enable network forwarding in /etc/sysctl.conf

#nano /etc/sysctl.conf

net.ipv4.ip_forward = 1

#To make the changes to sysctl.conf take effect, use the following command.

sysctl -p

Step 5. Setup iptables

You need to add the following iptables rules in order to open the correct ports and properly forward the data packets:

iptables -A INPUT -i eth0 -p tcp --dport 1723 -j ACCEPT
iptables -A INPUT -i eth0 -p gre -j ACCEPT
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE

Step 6. Start PPTP VPN server

service pptpd restart
chkconfig pptpd on

Congratulation’s! You have successfully installed PPTP VPN. Thanks for using this tutorial for installing PPTP VPN on CentOS 6 system. For additional help or useful information, we recommend you to check the official PPTP VPN web site.

June 21, 2018April 2, 2019

How To Install Htop on CentOS 6

Htop is an interactive and real-time system-monitor process-viewer written for Linux. It is designed to replace the Unix program top. It shows a frequently updated list of the processes running on a computer, normally ordered by the amount of CPU usage. Unlike top, htop provides a full list of processes running, instead of the top resource-consuming processes. Htop uses color and gives visual information about processor, swap and memory status. It is a must have when you want to monitor the resources of your linux server over an ssh connection for example.

This article assumes you have at least basic knowledge of linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple. Here is the steps to install ‘htop’ on CentOS 6.

Install Htop on CentOS 6

Step 1. First add yum repository your system.

wget http://packages.sw.be/rpmforge-release/rpmforge-release-0.5.2-2.el6.rf.i686.rpm
rpm -ihv rpmforge-release*.rf.i686.rpm

Step 2. Install htop using yum command:

 yum install htop

Step 3. After installation, launch htop by entering:

 htop

Install htop from source code

# wget http://downloads.sourceforge.net/project/htop/htop/1.0.2/htop-1.0.2.tar.gz
# tar -xvf htop-1.0.2.tar.gz
# cd htop-1.0.2
# ./configure
# make
# make install

Congratulation’s! You have successfully installed htop. Thanks for using this tutorial for installing htop process monitoring tool on CentOS 6 system. For additional help or useful information, we recommend you to check the official htop web site.

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June 21, 2018April 2, 2019

How To Install VestaCP on CentOS 6

VestaCP is an open source hosting control panel currently supports both RHEL flavoured Linux releases (Red Hat, CentOS) and Ubuntu. It comes with all necessary software to run and manage your websites hosted on your VPS. This article assumes you have at least basic knowledge of linux, know how to use the shell, and most importantly, you host your site on your own VPS.

VestaCP Features

Web Server (Apache with Nginx as Reverse Proxy).
DNS server.
Database Server.
Mail Server.
FTP Server.
Nginx out of the box.
SSL certificates & SNI.
Wildcard support.
Configuration Templates.
DKIM support.
Fast Backups.
System Monitoring.
AntiSpam / Antivirus.
WHMCS billing support.
EPEL integration.
Simple and Clean GUI.
Powerfull CLI.
Reliable Platform.
Open Data Format.

Install VestaCP on CentOS 6

Step 1. First, login to your VPS server via ssh as root and type following command:

curl -O http://vestacp.com/pub/vst-install.sh
bash vst-install.sh -f

Step 2. If everything is fine then you will get the below screen. Type “y” where it ask if you want to proceed. The system will ask you for an email address, it’s ok to provide a real one, they won’t SPAM you and it’ll advise you when it’s complete and will issue your login credentials to that address.

Step 3. Once the installer finishes installing, it will show you the url, Username and Password. just open that url in web browser and login using the username and password.

 https://youripaddress:8083/

Check more from VestaCP official website

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June 21, 2018April 2, 2019

How To Install Kloxo MR on CentOS 6

Kloxo-MR is a fork of original LXCenter’s kloxo project and its developed by Mustafa Ramadan, hence the “MR”. Kloxo MR not only fixes the bugs of Kloxo but it has many additional features like the ability to switch to Nginx server. This article assumes you have at least basic knowledge of linux, know how to use the shell, and most importantly, you host your site on your own VPS. Follow guide how to install Kloxo MR on CentOS 6.
In this tutorial we will show you how to install and configuration of Kloxo MR on your CentOS 6 server.

Install Kloxo-MR on CentOS 6

Step 1. Update all the packages installed of the Operating System.

 yum update -y

Step 2. Install the needed packages.

yum install yum-utils yum-priorities vim-minimal subversion curl zip unzip -y
yum install telnet -y

Step 3. Make sure SELinux is disabled.

We have to disable SELinux, cause it not correctly disabled, the Kloxo installation useless and may required to reload OS to re-install it properly.

setenforce 0
echo ‘SELINUX=disabled’ > /etc/selinux/config

Step 4. Download Kloxo-MR repo.

wget https://github.com/mustafaramadhan/kloxo/raw/release/kloxo-mr.repo –no-check-certificate
cd /

Step 5. Install Kloxo-MR.

 yum install kloxomr-y

Now, run setup.sh before reboot.

 sh /script/upcp

It will ask you whether you want to install it as slave or master. Choose the option 1 (Master) and click enter. That’s it. Reboot the server after installation completes.

Step 6. Once it complete, we can navigate to our kloxo admin panel http://serverip:7777 over SSL or http://serverip:7778 without over SSL. So the traffic such as passwords and data will be sent unencrypted (plain). If we had trouble login to our kloxo admin panel. We should be stop the firewall before and make sure the firewall permit kloxo traffic at 7777 and 7778 port. Default username is admin and password is admin.

Congratulation’s! You have successfully installed Kloxo MR. Thanks for using this tutorial for installing Kloxo MR control panel on CentOS 6 system. For additional help or useful information, we recommend you to check the official Kloxo MR web site.