If you are suffering from continuous and/or intermittent SNMP service issues with the following behavior ; SNMP stop responding randomly (stop/start required every now and then) ; The following error is shown in the logs : Unknown: out of memory [2296311] Then you are most likely running vSphere ESXi v6.7 early version. This is a… Read More »
In the early ages of free automated SSL certificates, FleetSSL cPanel Plugin (earlier known as Let’s Encrypt for cPanel) was the standard. cPanel then announced in 2016 that the official plugin was now AutoSSL, which is provided by cPanel. The move from FleetSSL to AutoSSL is quite simple : 1. Uninstall FleetSSL Let’s Encrypt :… Read More »
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: [req] distinguished_name = req_distinguished_name req_extensions… Read More »
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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 »
If you tried to upgrade your Juniper SSG ScreenOS version lately using the WebUI and got the message “Failed to upgrade” and the console output showed : ********Invalid image!!! ********Bogus image – not authenticated!!! Fips check failed (This would output the same if you tried to manually upgrade from the console). This could indicate two… Read More »
Having the following error while trying to open the console of your guest VMs? Unable to connect to the MKS: Login (username / password) incorrect This is happening because the communication between your client computer and your vSphere host isn’t working properly. The main cause for this would be that the ports required for the… Read More »
Recently, when I try to build an open source project, I meet the following compile error: fatal error: ‘libelf.h’ file not found #include <libelf.h> ^ 1 error generated. The solution is installing elfutils-libelf-devel package: sudo yum install elfutils-libelf-devel Or: sudo dnf install elfutils-libelf-devel
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