The most difficult thing about configuring the DNS settings for a domain is designing a plan of action: making up one’s mind about what kind of services you envision and how you want to route the traffic. Here’s a primer on how to configure DNS using Route 53 or any other service.
The rsync utility can backup files, synchronize directory trees, and much much more, both on the local machine and between two different hosts—via push and pull. Here is how to tame it.
As zero-day exploits become increasingly common, keeping the kernel up to date is a top priority.
In CentOS 6.x/7.x and RHEL 6x./7.x, upgrading the Linux Kernel is a painful procedure which requires about a dozen steps. On Fedora, all it takes is a time-saving two-liner. You don’t need to concern yourself with the configuration of the grub boot manager, which is a frequent source of trouble on CentOS and RHEL.
This is easier than you probably think: AWS will expand the EBS boot volume of an EC2 instance running Linux automatically when you launch a new instance off of it with the desired capacity.
Here is how it works in more detail.
The DNS system is broken. The sorry state of DNS security exposes your server and your end users to a variety of risks. Some of those risks are preventable.