open source for cloud lovers
SSL certificate signature algorithm can be identified using nmap or openssl command. Here are the steps to identify SSL certificate algorithms used in your webserver or other SSL endpoints. nmap…
Major credits to http://betteros.org/ which got me into researchinglibc-free programming. Why would you want to avoid libc? Your code will have no dependencies other than the compiler. Not including the…
TLS 1.0 is end of life on June 30, 2018. To disable TLS 1.0 on Apache webserver installations, edit the “SSLProtocol” directive in your ssl.conf (typically /etc/httpd/conf.d/ssl.conf), where the ciphers…
vm.swappiness takes a value between 0 and 100 to change the balance between swapping applications and freeing cache. At 100, the kernel will always prefer to find inactive pages and…
Understand how various Linux performance monitoring tools behave when the system is heavily loaded in terms of cpu, memory and swapping to disk (IO).
Steps to configure static routing in Linux, with examples.
Searching in Splunk gets really interesting if you know the most commonly used and useful command sets and tips. A handy document on splunk searches.
Comprehensive NetApp Commands list for 7-mode filers
Linux network bonding setup guide with detailed explanation of steps and bonding modes
NetApp performance monitoring
linux performance tuning, linux, performance
Linux networking and bonding using nmcli
Here is a simple shell script to load & hammer the CPU using awk. The script does simple recursive mathematical calculations and thus CPU load peaks up on higher values…
Disable TLS 1.0 and enable higher versions of TLS in nginx. To disable TLS 1.0 on nginx webserver installations, edit the "ssl_protocols" directive in your nginx.conf, where the TLS server…
rpm command not working and rpmdb is corrupted ? Here are the steps how to recover it and make rpm commands working again.
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