Install LAMP on Centos 7 with PHP 5.x/7.0/7.1/7.2

In this tutorial, I use the hostname server1.example.com with the IP p 192.168.1.100. These settings might differ for you, so you have to replace them where appropriate.

I will add the EPEL repo here to install latest phpMyAdmin as follows:

rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY*
yum -y install epel-release

To edit files on the shell, I’ll install the nano editor. If you prefer vi for file editing, then skip this step.

yum -y install nano

Installing MySQL / MariaDB

MariaDB is a MySQL fork of the original MySQL developer Monty Widenius. MariaDB is compatible with MySQL and I’ve chosen to use MariaDB here instead of MySQL. Run this command to install MariaDB with yum:

yum -y install mariadb-server mariadb

Then we create the system startup links for MySQL (so that MySQL starts automatically whenever the system boots) and start the MySQL server: Continue reading “Install LAMP on Centos 7 with PHP 5.x/7.0/7.1/7.2” »

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Endian Community (3.x)- network configuration using CLI- Netwizard

After you login in you Endian Appliance, simply issue the following command:

root@endian # netwizard

You will be asked a couple of questions. If the network has already been configured, the current values are shown: simply press Enter if you want to keep that value. The snippet below shows some possible values. Note that you should enter the network interfaces as eth1, eth2, and so on and not as br0, br1, and so on. IP ranges should be written in CIDR notation.

Network Configuration Wizard 
----------------------------

Hostname? myappliance.
Domain? mydomain 
RED interface type <STATIC/DHCP/GATEWAY>? DHCP 
RED device <eth0/eth1/eth2/eth3>? eth3 
Green devices <eth0/eth1/eth2>? eth0 
Green IPs (IP/CIDR)? 172.20.0.1/24 
Orange devices <eth1/eth2>? eth1 
Orange IPs (IP/CIDR)? 172.21.30.1/24 
Blue devices ? eth2 
Blue IPs (IP/CIDR)? 172.22.30.1/24 
Enable SSH access <on/off>? on 
Allow access to ports 22, 80 and 10443 from any interface <on/off>? off

Continue reading “Endian Community (3.x)- network configuration using CLI- Netwizard” »

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Endian Community (2.5.1)- Change the green IP address from console

Management URL: https://192.168.0.15:10443
Green IP:       192.168.0.15/24
-----------------

0) Shell
1) Reboot
2) Change Root Password
3) Change Admin Password
4) Restore Factory Defaults

Choice: 0[endian]: login
root's password:
Welcome to Endian Firewall Appliance release 2.5-0 (Deployset #0)
[endian] root: bash

Continue reading “Endian Community (2.5.1)- Change the green IP address from console” »

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Install Percona XtraDB Cluster for MySQL 5.7 on Debian 8

First of all, why we choose three nodes and not only two? In any cluster, the number of nodes should be odd, so in the case of disconnection of a node, we assume that the highest group of servers has the fresh data, and should be replicated to the down node to avoid data loss. This is related only to resolve conflicts in data replication, we won’t loose data written only to the disconnected node.

This is used to avoid a circumstance called split brain, in which we can’t automatically choose which node has correct data. Think for example of a 2 node cluster where both nodes are disconnected from each other, and the same record is written to both nodes: who wins when they come back online? We don’t know, so split brain happens, and we have to manually decide wich record is the right one.

The number of nodes that is needed to determine wich part of the cluster has the right data is called QUORUM, in our case, the quorum will be 2. So we need 2 servers always be connected to each other. In case all three nodes will go down, we have a split brain and we must decide wich server should go in bootstrap mode manually, this is the procedure to determine wich will be the main server to resume from the split brain.

Configuring Percona XtraDB Cluster on Debian 8

This tutorial describes how to install and configure three Percona XtraDB Cluster nodes on Debian 8 servers, we will be using the packages from the Percona repositories.

Node 1
Hostname: mysql1.local.vm
IP address: 192.168.152.100
Node 2
Hostname: mysql2.local.vm
IP address: 192.168.152.110
Node 3
Hostname: mysql3.local.vm
IP address: 192.168.152.120

On each host, modify file /etc/hosts as follows to ensure DNS will work correctly. Continue reading “Install Percona XtraDB Cluster for MySQL 5.7 on Debian 8” »

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Configure Apache With Self-Signed TLS/SSL Certificate on Ubuntu 16.04

Step 1: Generating the certificate

First, let’s create a place to store the file.

mkdir ~/certificates
cd ~/certificates

Generate CSR and private key.

openssl req -x509 -newkey rsa:4096 -keyout apache.key -out apache.crt -days 365 -nodes

It will ask for information for the certificate request. Complete with the appropriate information.

Country Name (2 letter code) [AU]: US
State or Province Name (full name) [Some-State]: FL
Locality Name (eg, city) []: Miami
Organization Name (eg, company) [My Company]: My Company
Organizational Unit Name (eg, section) []:

Common name should be your domain name or the server’s IP address. Also, fill in your email. Continue reading “Configure Apache With Self-Signed TLS/SSL Certificate on Ubuntu 16.04” »

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Install and setup Plex Media Server Ubuntu 16.04

Plex is a free feature-rich media library platform that provides a way to store all your movies, shows, and other media in one place. You can access Plex from any device, whether you’re at home or on-the-go. There are many different media tools available in the world like, Kodi, Xmbc, OSMC and Mediatomb, but the Plex Media Server is perhaps one of the most popular solutions for managing media. Plex runs on Windows, macOS, Linux, FreeBSD and many more. Plex is a client-server media player system made up from two main components, 1) The Plex Media Server, which organizes music, photos and videos content from personal media libraries and streams it to their player, 2) The Players that can be the Plex web UI, Plex Apps or Plex home theater. Plex Media Server supports Chromecast, Amazon FireTV, Android, iOS, Xbox, PlayStation, Apple TV, Roku, Android TV and various types of smart TVs. If you are looking for a way to watch your movies from anywhere, then Plex is best choice for you.

In this tutorial, we will learn how to install and configure Plex Media Server on Ubuntu 16.04.

Requirements

  • A server running Ubuntu 16.04.
  • A not-root user with sudo privileges setup on your server.
  • A static IP address 192.168.0.227 setup on your server.

Getting Started
Before starting, make sure your system is fully up to date by running the following command:

sudo apt-get update -y
sudo apt-get upgrade -y

Once your system is updated, restart your system to apply all these changes with the following command:

sudo reboot

After restarting, log in with sudo user and proceed to the next step. Continue reading “Install and setup Plex Media Server Ubuntu 16.04” »

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Vesta- How to set up master-slave DNS cluster

If you are looking for the options to avoid any DNS-related downtime or the way to manage dns across all server you have, you might consider to set up dns cluster.

Create user dns-cluster on a server which will be used as dns slave

On the second server (slave) with vestacp you should create new user with name dns-cluster (via gui or cli)Code: 

v-add-user dns-cluster passowrd yourmail@example.tld

On the first server (master) you should run this command: Continue reading “Vesta- How to set up master-slave DNS cluster” »

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Install Vesta Control Panel (vestacp) on Centos 7 with PHP-FPM and PHP 7.2

I had few issues on my container and KVM on installing vestacp. Issues were like quite weird, such as-

  1. Post installation on KVM- it moved into emergency maintenance mode
  2. Post installation on LXC container- DNS resolution halted

After hours and hours of search, found few root causes-

  1. I have to withdraw quota with vestacp installation package
  2. No firewall on LXCcontainer

So let’s start.

Download installation script

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

Run it

bash vst-install.sh --nginx yes --phpfpm yes --apache no --named yes --remi yes --vsftpd yes --proftpd no --iptables no --fail2ban no --quota no --exim yes --dovecot yes --spamassassin yes --clamav yes --softaculous yes --mysql yes --postgresql no --hostname yourdomain.com --email yourmail@yourdomain.com --password yourpassword

You can also generate your installation command from vesta website: Continue reading “Install Vesta Control Panel (vestacp) on Centos 7 with PHP-FPM and PHP 7.2” »

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SPF, DKIM, DMARC – Sample and perfect record values

Sharing some sample record value of the post subject for future reference:

SPF:

domain.gov.bd. IN TXT "v=spf1 a mx ip4:1.2.3.4 ?all"

DKIM:

MDaemon._domainkey.domain.gov.bd. IN TXT "v=DKIM1; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDIaJcNDjvJ6LJ/zyZCIOuaQiLMSC+FBfky8JMFE7LUGlP4LXwmpaKO3Z67x+PVXgYbbFU9nzLaFOfIXTbsCh6LYLBgQF+PNghbTAchQ59IEMrMRsTPCCg95+gKYRupN0B96Uz7rrXifZL8T+yl9MkpIlAsXXs7e8Vhzwa94NdVjQIDAQAB"

DMARC:

_dmarc.domain.gov.bd. 3600 IN TXT "v=DMARC1; p=quarantine; sp=quarantine; rua=mailto:postmaster@domain.gov.bd; ruf=mailto:postmaster@domain.gov.bd; rf=afrf; pct=100; ri=86400"

DMARC Generator: 

https://www.unlocktheinbox.com/dmarcwizard/

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