" RHEL "

How to fix IonCube/ZendGuard “undefined symbol: executor_globals” after upgrading Apache and PHP

Recently when updating a WHM/cPanel server to use the new version of Apache and PHP (Apache 2.4 & PHP 5.6), after everything completed, I kept getting errors even though I know the PHP modules for IonCube and ZendGuard were installed correctly … turns out there was another issue … and here’s how to fix it. (more…)

Perl CPAN DBD::mysql error “FAILED–Further testing stopped” after upgrading Watch MySQL (XSLoader.pm, libmysqlclient.so)

I recently ran into an issue with Perl connecting to MySQL after upgrading a plugin for cPanel/WHM called Watch MySQL. After going through the logs files I determined the error was with a missing dependency file XSLoader.pm and libmysqlclient.so. The problem actually ended up being that those files were not installed because the Perl CPAN upgrade for DBD::mysql failed. After some research it was actually very easy to fix … (more…)

How to install GNU Radio, FFTW, RTL SDR, GrOsmoSDR, and more using PyBombs with dependencies, by rpm/deb or build from source

Recently I purchased a Mini SDR (DVB-T) from NooElec to play around with some RF and do some testing, but for some reason kept running into problems while trying to build GNU Radio on Debian (Ubuntu/Linux Mint) from the git repos.  I attempted to use the version from the standard repository, but unfortunately that version is old and out dated (I think 1.6 was in repo, but 1.7.2 is latest), so the only option was to build from source.  I swear I probably spent 4 hours trying to figure out why certain dependencies wouldn’t install, then I would get one to install, and another one would come up…add to that for the testing I wanted to do I needed to install FFTW, RTL SDR, and GrOsmoSDR, which is when I finally decided to find a better way to build from source (or find latest version deb/rpm). (more…)

How to secure an OpenVZ cPanel /tmp directory

Recently on an OpenVZ VPS we kept getting messages from ConfigServer Security and Firewall stating “lfd on server.host.com: Suspicious File Alert”, with the message pointing specifically to a file in the /tmp directory. After going through the files I didn’t find anything that looked suspicious in nature (exploit, malware, etc), but I did notice that this older VPS did not have the /tmp directory mounted correctly to secure it. When I attempted to use cPanel’s built in /scripts/securetmp I got an error saying the loop module wasn’t detected/installed “*** Notice *** No loop module detected” (more…)