Category Archives: ITechLounge

Linux : How to create a SAN SSL certificate request

This procedure will show you how to create Subject Alternate Name (SAN), or in other words, a certificate request with multiple Common Name (CN) DNS aliases. It order to do so, we need to create a CSR request template as shown below: 1. Create the certificate request template as followed:

Note: Edit all fields… Read More »

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Linux : How to rename the network interface in CentOS/RHEL7

Since the latest major version release of CentOS/RHEL 7, it seem that we wen’t a bit crazy about the whole systemd thing… Seriously, having a network interface named “eno16780032” isn’t that great! Fortunately, there is a a way of getting back the old naming convention by following these steps : 1. Edit the Grub configuration… Read More »

Fix compile error: “fatal error: ‘libelf.h’ file not found”

Recently, when I try to build an open source project, I meet the following compile error:

The solution is installing elfutils-libelf-devel package:



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