Webmin installation on Centos

Installing the RPM

If you are using the RPM version of Webmin, first download the file from the downloads page, or run the command :

wget http://prdownloads.sourceforge.net/webadmin/webmin-1.870-1.noarch.rpm

then install optional dependencies with :

yum -y install perl perl-Net-SSLeay openssl perl-IO-Tty perl-Encode-Detect

and then run the command :

rpm -U webmin-1.870-1.noarch.rpm

Continue reading “Webmin installation on Centos” »

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CentOS 5 Repository fix using vault.centos.org

It’s a bit silly process, googled hours but found not solid way to update my old 32bit centos 5 linux box. So came up with a solution of my own. It might work for you, but no guarantee!

Step-1
Remove all .repo inside /etc/yum.conf.d/ directory

Step-2
Create a new repo file inside /etc/yum.conf.d/ 

nano /etc/yum.conf.d/CentOS-Vault.repo 

Update with the following section: Continue reading “CentOS 5 Repository fix using vault.centos.org” »

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Fix on connecting to NFS server from Proxmox Centos 7 Container

I hope you already know how to allow NFS from proxmox host server. if not, you may read my earlier post:

NFS fix on LXC Host Server

I was actually receiving a error like below:

# mount -t nfsd nfsd /proc/fs/nfsd
mount: nfsd is write-protected, mounting read-only
mount: cannot mount nfsd read-only

My proxmox edition was 5.0-30 and my CentOS was 7.

However, this is a bit different rather looking the other one as mentioned above. I was experiencing connecting my Centos 7 LXC container to a NFS server in the network. The regular tweak didn’t work. So, had to spend a while googling the solution. Found the correct one on a forum thread. But eventually it worked. For this you need to edit the file

nano /etc/pve/lxc/<your container ID>.conf

Add the below line in the conf file:

lxc.aa_profile: unconfined

Reboot the container. And now try to connect the NFS server. It should work.

 

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LEMP on Centos 6

In this guide, we’ll walk you through installing all of these components (except for Linux, which is already installed as your OS when you create the server).

Install the Extra Packages for Enterprise Linux Repository (or EPEL for short):sudo yum install epel-release
Run a yum update to sync your packages with the new EPEL repository:

sudo yum update

Install MySQL:

sudo yum install mysql-server

Activate MySQL:

sudo service mysqld start

Configure your MySQL installation:

sudo /usr/bin/mysql_secure_installation

Make it so that MySQL will start automatically on server reboot: Continue reading “LEMP on Centos 6” »

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Install Apache Tomcat 8.5 on CentOS 7.3

Prerequisites

Server with CentOS 7 – 64bit
2 GB or more RAM (Recommended)
Root Privileges on the server

Step 1 – Install Java (JRE and JDK)

In this step, we will install the Java JRE and JDK from the CentOS repository. We will install Java 1.8.11 on the server with the yum command.

Run this command to install Java JRE and JDK from CentOS repository with yum:

yum -y install java-1.8.0-openjdk.x86_64 java-1.8.0-openjdk-devel.x86_64

It will take some time, wait until the installation finished.

Then you should check the Java version with the command below:

java -version

You should see results similar to the ones below:

openjdk version "1.8.0_111"
OpenJDK Runtime Environment (build 1.8.0_111-b15)
OpenJDK 64-Bit Server VM (build 25.111-b15, mixed mode)

Step 2 – Configure the Java Home Environment Continue reading “Install Apache Tomcat 8.5 on CentOS 7.3” »

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Install LEMP with phpmyadmin on CentOS 7

To add the CentOS 7 EPEL repository, open terminal and use the following command:

yum install epel-release

Since we are using a sudo command, these operations get executed with root privileges. It will ask you for your regular user’s password to verify that you have permission to run commands with root privileges. Now that the Nginx repository is installed on your server, install Nginx using the following yum command:

yum install nginx

Afterwards, your web server is installed. Once it is installed, you can start Nginx on your VPS:

systemctl start nginx

You can do a spot check right away to verify that everything went as planned by visiting your server’s public IP address in your web browser (see the note under the next heading to find out what your public IP address is if you do not have this information already): Continue reading “Install LEMP with phpmyadmin on CentOS 7” »

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stress test your web server with httperf

Httperf is a tool for measuring web server performance. It provides a flexible facility for generating various HTTP workloads and for measuring server performance.

NOTE : for accurate results, it’s best to run httperf from a remote machine and not from the localhost

to install httperf in red-hat based distributions (additional repo are needed. For centos you’ll need rpmforge, see here for installation)

yum install httperf

or in debian based

apt-get install httperf

An example of httperf stress test Continue reading “stress test your web server with httperf” »

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PHP 7.0 on CentOS/RHEL 6.9 and 7.4 using Yum

Before beginning this, it is assumed that you already have installed LAMP on your server.

To install, first you must add the Webtatic EL yum repository information corresponding to your CentOS/RHEL version to yum:

CentOS/RHEL 7.x:

rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
rpm -Uvh https://mirror.webtatic.com/yum/el7/webtatic-release.rpm

CentOS/RHEL 6.x:

rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-6.noarch.rpm
rpm -Uvh https://mirror.webtatic.com/yum/el6/latest.rpm

Now you can install PHP 7.0’s mod_php SAPI (along with an opcode cache) by doing:

yum install php70w php70w-opcache

You can alternatively install PHP 7.0’s php-fpm SAPI (along with an opcode cache by doing:

yum install php70w-fpm php70w-opcache

See the package list below for additional SAPIs and PHP extensions. Continue reading “PHP 7.0 on CentOS/RHEL 6.9 and 7.4 using Yum” »

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Perfect Squid with Transparent proxy and SSL log

This will be a transparent SQUID proxy for your home or corporate network  ,  it  will transparently  intercept  all  traffic http and https  ,  for  https  you  will  need  to  push  to  clients  the CA certificate of the SQUID server, it  has  been tested to be working without problems with lastest Internet Explorer, Mozilla Firefox and Chrome browsers.

STEP 1 – Installing Base system , upgrading it and disabling IPtables , SeLINUX

We  start  by  downloading  the  CentOS  6.5  iso from CentOS website (x86 or x64) : CentOS 6.5 ISO’s , install Base system. Partitioning , software or hardware raid is up to the user. In this example hostname is : proxy.home.lan and ip address is : 192.168.201.250 . Continue reading “Perfect Squid with Transparent proxy and SSL log” »

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XEAMS mail Server Installation on CentOS 6

Installation Instructions

Follow the steps below to install Xeams on a Linux machine.Log in as root

  1. Download the installer
  2. Extract the tar file using the following command
     tar -xf XeamsLinux.tar
  3. Ensure the permissions for Install.sh is set as an executable. If not, use the chmod +x Install.sh command to change its permission
  4. Execute Install.sh script

Continue reading “XEAMS mail Server Installation on CentOS 6” »

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