I'm very fond of Packet.net, but when I tried to use my previous procedure to upgrade the kernel there, I run into some unexpected bumps with the grub2 tools missing which really threw me off. Of course, this isn't a problem specific to Packet.net but it's the first …

Upgrading the kernel always gives me trouble on CentOS 7.x so here's some notes on how I did it:

1. Figure out what your current active kernel is:

Current kernel:

uname -a
Linux kernelupgrade 3.10.0-327.10.1.el7.x86_64 #1 SMP Tue Feb 16 17:03:50 …

Most folks are familiar with iSCSI. In a nutshell, iSCSI is a way to share a block device over the network. You can format the device and use it as if it were a local disk. But there’s also a way less popular alternative to iSCSI called NBD. Network …