Tag Archives: linux
CompTIA Linux+ and LPI Certifications
I’m currently CompTIA Linux+ certified. I passed the 2004 exam back in 2005, and more recently the 2009 exam while it was in beta. The Linux+ certification has since been updated and essentially merged with the LPIC-1 from the Linux … Continue reading
STEC SSD firmware updates with IBM SAS/SATA update utility
I have an IBM-branded STEC MACH8 SSD installed in a Supermicro server with a PDSME+ motherboard. This 50 GB SLC SSD works great as a Logzilla for ZFS, but updating the firmware can be a hassle. Getting the latest firmware … Continue reading
Configuring CentOS 6 and Windows VMs for virsh console on KVM
Accessing the console of a KVM VM directly rather than via SSH (Linux) or RDP (Windows) can occasionally be useful. For example, if a Linux VM suffers a disk issue and is stuck at a single-user mode prompt, SSH won’t … Continue reading
Securing Wi-Fi with PEAP and FreeRADIUS on CentOS
I recently read Low-cost RADIUS servers for Wi-Fi security, a review of four RADIUS servers with an emphasis on Wi-Fi network security use cases. The main complaint about FreeRADIUS, the only no-cost option mentioned, is the difficulty of configuration. To see … Continue reading
Install VMware Tools in CentOS using yum
When running CentOS (or RHEL, or Scientific Linux) in a VM on VMware ESXi, you may want to install VMware Tools. Modern Linux distributions include the drivers necessary to run the OS in a VM on VMware ESXi, even those for PVSCSI controllers and … Continue reading
Updating LSI MegaRAID firmware in VMware ESXi 5
I recently built a new server to run VMware ESXi. After installing ESXi 5.0 update 1 and applying the latest patch (ESXi500-201207001), I decided I should update the firmware on the installed MegaRAID SAS 9261-8i RAID controller. I have a … Continue reading