The Sysstat Suite of Resource Monitoring Tools
Sysstat is a sophisticated tool.
Sysstat contains the following tools related to collecting I/O and CPU statistics:
iostat
Displays an overview of CPU utilization, along with I/O statistics for one or more disk drives.
mpstat
Displays more in-depth CPU statistics.
Sysstat also contains tools that collect system resource utilization data and create daily reports based on that data.
These tools are:
sadc
Known as the system activity data collector, sadc collects system resource utilization information and writes it to a file.
sar
Producing reports from the files created by sadc, sar reports can be generated interactively or written to a file for more intensive analysis.
Nessus
The official website at the following URL: http://www.nessus.org/
Nessus is a full-service security scanner. The plug-in architecture of Nessus allows users to customize it for their systems and networks. As with any scanner, Nessus is only as good as the signature database it relies upon. Fortunately, Nessus is frequently updated and features full reporting, host scanning, and real-time vulnerability searches. Remember that there could be false positives and false negatives, even in a tool as powerful and as frequently updated as Nessus.
Nikto
Nikto can be found at the following URL: http://cirt.net/nikto2
Nikto is an excellent common gateway interface (CGI) script scanner. Nikto not only checks for CGI vulnerabilities but does so in an evasive manner, so as to elude intrusion detection systems.
If you have Web servers serving up CGI scripts, Nikto can be an excellent resource for checking the security of these servers.
CentOS - Development Tools Install
CentOS has some handy meta-packages that include a set of pre-defined programs needed for a single purpose. yum is an interactive, automated update program which can be used for maintaining systems using rpm
So instead of installing a dozen different package names, you can install just one meta-package. One such package is called ‘Development Tools’. Issue the command.
sudo yum groupinstall ‘Development Tools’
Notice the programs that are to be installed include gcc, make, patch and so on. All these are needed for many other programs to install properly. A neat system indeed.
Other Yum Options:
groupinstall group1 [group2] [...]
groupupdate group1 [group2] [...]
grouplist [hidden]
groupremove group1 [group2] [...]
groupinfo group1 [...]
Ensim Power Tools
Power Tools are off-the-shelf Web applications that provide e-commerce, content management, forums, chat and other dynamic features for Web sites.
1. Download the Ensim Power Tools Installer.
http://download.pro.parallels.com/support/powertools/downloads/Power-Tools-1.5-11.tar.gz
NOTE: please be sure to upload this to your server using binary mode transfer, otherwise you will receive an md5sum failure.
2. Untar the tarball and go to the folders: Power-Tools/zion-beta and Power-Tools/zion-1.5
3. For each RPM, run the following:
rpm -qa | grep [power-tool-name-version]
4. If the output of this command is non-blank, run the following:
Reference: http://parallels.com/
The Sysstat Suite of Resource Monitoring Tools
Sysstat contains the following tools related to collecting I/O and CPU statistics:
iostat
Displays an overview of CPU utilization, along with I/O statistics for one or more disk drives.
mpstat
Displays more in-depth CPU statistics.
Sysstat also contains tools that collect system resource utilization data and create daily reports based on that data. These tools are:
sadc
Known as the system activity data collector, sadc collects system resource utilization information and writes it to a file.
sar
Producing reports from the files created by sadc, sar reports can be generated interactively or written to a file for more intensive analysis.
