Hard Drive Tools

With respect to hard drives, the acronym “SMART” stands for Self-Monitoring, Analysis and Reporting Technology. This was built into many ATA-3 and later ATA, IDE and SCSI-3 hard drives. Basically anything after about 2005 should have it. Ubuntu/Debian: CentOS/Fedora/RH: Gentoo: Wiki: http://sourceforge.net/apps/trac/smartmontools/wiki smartctl The program smartctl is used to interface with the SMART features on … Read more

Installing and configuring sysstat on CentOS 8

Sysstat is a package of performance monitoring tools for Linux operating systems. It provides a collection of utilities to collect, process and analyze system utilization data over time. The sysstat package includes tools like sar, iostat, mpstat, and pidstat, which provide various system performance metrics such as CPU, memory, disk and network usage, process statistics, and more. The data collected by sysstat can be used to identify performance bottlenecks, troubleshoot system issues, and make informed decisions about system resource usage.

This article shows how to install sysstat and to check the system.

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Openssl Heartbleed Vulnerability

Find out if your server is affected http://filippo.io/Heartbleed/ Run the command: to get the version number of openssl. If the command shows e.g.: Your server might be vulnerable as the version is below 1.0.1g. But some Linux distributions patch packages, see below for instructions to find out if the package on your server has been … Read more

Find Exim Spam

How to locate the top scripts on your server that send out email. You can then search the Exim mail log for those scripts to determine if it looks like spam, and even check your Apache access logs in order to find how a spammer might be using your scripts to send out spam. Login … Read more

Rkhunter Emails

Getting rkhunter failed emails in your email? Here is how to configure the email to send to a correct address. Edit /etc/sysconfig/rkhunter: Change the email to your email. Save and you are all set!