This tutorial describes how to set up database replication in MySQL using an SSL connection for encryption (to make it impossible for hackers to sniff out passwords and data transferred between the master and slave).

This tutorial describes how to set up database replication in MySQL using an SSL connection for encryption (to make it impossible for hackers to sniff out passwords and data transferred between the master and slave).

This tutorial describes how to set up database replication in MySQL. MySQL replication allows you to have an exact copy of a database from a master server on another server (slave), and all updates to the database on the master server are immediately replicated to the database on the slave server so that both databases are in sync.

This example uses CentOS 6 so one of the issues you will need to be aware of is SELinux. The great aspect of a slave server is that you can update your primary DNS server and it automatically update the slave.

I run a master and slave Kerberos servers, which requires setting up kprop to run regularly on the master server in order to transfer any changes to the slave server.

Microsoft-Novell slave trade in the words of Simon Phipps

In this tutorial I will describe how to install and configure MyDNS and MyDNSConfig on Fedora 8. MyDNS is a DNS server that uses a MySQL database as backend instead of configuration files like, for example, Bind or djbdns. The advantage is that MyDNS simply reads the records from the database, and it does not have to be restarted/reloaded when DNS records change or zones are created/edited/deleted. A secondary nameserver can be easily set up by installing a second instance of MyDNS that accesses the same database or, to be more redundant, uses the MySQL master / slave replication features to replicate the data to the secondary nameserver.

There are different ways to take Backup from MongoDB. Using mongodump is one of simple and efficient way to implement it. The bash script presented here take backup from replica set after verifying that current server is slave and then transfer it to separate backup server along with capturing vital information of all steps in log file.

The primary goal of a backup machine for Postfix is that if the first one fails, mail will be collected by the secondary mail server until the primary mail server is back online. When you build the Backup MX be sure to install all of the necessary applications to scan for viruses and check for SPAM as you do not want to overload the primary machine once it comes online.