In the age of cyber warfare, being paranoid is the only reasonable attitude and that means, among other things, being paranoid about software updates.
A fix for Spectre & Meltdown: update your Linux kernel in place (running CentOS/RHEL 7 or above), and live happily ever after
If you launch an instance from the official CentOS or RHEL 7.x AMI on AWS, you will be running kernel 3.1 as of this writing. That’s not a good idea. You can easily take advantage of improved security features of newer kernels that are already available in a stable release. The renowned Linux kernel maintainer Greg Kroah-Hartman released the Linux Kernel 4.14.15, which includes important fixes for Spectre & Meltdown. Here is how to update your Linux kernel from 3.1 to 4.16.11 in place.
Tip: assign multiple IP addresses to an EC2 instance
[Updated 2018-06-11.] You can assign multiple IP addresses to an EC 2 instance. Here is a brief summary that will get you started on using the most recent AWS capabilities.
How to fix the NGINX error “Failed to read PID from file”, quick and easy
Here’s a tip on how to fix the error message:
nginx.service: Failed to read PID from file /run/nginx.pid: Invalid argument
quick and easy. This fix should do it for you.
How to install the AWS CLI tools on Fedora, quick and easy
The AWS Command Line Interface (CLI) is a set of tools AWS provides to allow you to administer your AWS cloud infrastructure and other services in the command line on Windows, Mac and Linux. Installing them is quick and easy. Here is a quick guide to get you started.
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