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mysql-zrm is short for Zmanda Recovery Manager for MySQL. It lets you create full logical or raw backups of your databases , generate reports about the backups, verify the integrity of the backups, and recover your databases. It can also send email notifcations about the backup status, and you can implement multiple backup policies.

This procedure was successfully tested and implemented on CentOS 5.X and RHEL 5.X servers.
Pre-requisites:
1.mysql client, MySQL server 4.1 and above
2.perl-DBI and perl-XML-Parser
yum install perl-DBI perl-XML-Parser

Installation:

1.Download mysql-zrm on http://www.zmanda.com/download-zrm.php
2.Get the RPM
wget http://www.zmanda.com/downloads/community/ZRM-MySQL/2.1.1/RPM/MySQL-zrm-2.1.1-1.noarch.rpm
3.Install
rpm -ivh MySQL-zrm-2.1.1-1.noarch.rpm

1. Wonder why you can’t send email from your linux server?

2. Is your mail server or 3rd party email hosting provider requires authentication for your outgoing server to send out emails successfully?

3. Are you using a default sendmail email client on your linux box and wonder why your getting maillog errors such as this:

——-sample sendmail maillog error from my nagios server—————
Oct  2 17:03:54 nms sendmail[25657]: n9293qiw025655: to=<nagios@freelinuxtutorials.com>,

ctladdr=<root@nms.freelinuxtutorials.com> (0/0), dela0928, relay=smtp.freelinuxtutorials.com.

[216.200.145.17], dsn=5.1.1, stat=User unknown
Oct  2 17:03:54 nms sendmail[25657]: n9293qiw025655: n9293siw025657: DSN: User unknown
Oct  2 17:03:54 nms sendmail[25657]: n9293siw025657: to=<root@nms.freelinuxtutorials.com>,

Step by Step Procedure

Step 1. Add 2 LAN cards to the Linux box. You need to have two(2) NICs, one for your private network and one for the public IP address

Step 2. Check if your networks cards are properly detected and installed. You can use the command “dmesg” to verify if it was recognized during the boot-up process

Sample output:
#dmesg |grep eth

e100: eth0: e100_probe: addr 0xfa061000, irq 177, MAC addr 00:10:DC:5E:A8:BF
e100: eth1: e100_probe: addr 0xfa060000, irq 185, MAC addr 00:10:DC:5E:A8:C0
e100: eth0: e100_watchdog: link up, 100Mbps, half-duplex
e100: eth1: e100_watchdog: link up, 100Mbps, full-duplex

The procedure below was tested successfully on CentOS.  The same thing was also implemented on my BSD box and works as well.

Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. It reduces bandwidth and improves response times by caching and reusing frequently-requested web pages. Squid has extensive access controls and makes a great server accelerator. It runs on Unix and Windows and is licensed under the GNU GPL.

The new release provides high level coverage of the improvements and additions that have been implemented in Red Hat Enterprise Linux 5.4.

Changes include:

a. Package Updates
b. New Packages
c. Technology Previews
d. Fix Known Issues
e. Package Manifest

Some important Updates are:

1. Virtualization Updates
2. Clustering Updates
3. Networking Updates
4. Filesystems and Storage updates
5. Desktop Updates
6. Tools Updates
7. Architecture Specific Support
8. Kernel Updates

Official Release Notes:

http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.4/html-single/Release_Notes/

Technical Notes can be read thru:

http://www.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5.4/html/Technical_Notes/

Copyright belongs to Red Hat, Inc..