Missing rc.local for adding commands to run on startup? Here’s how to set up similar functionality with today’s systemd.
Continue reading “Replacing rc.local in systemd Linux systems”
rc.local file was—and in some cases still is—the place for Linux sysadmins to put commands that need to be run at startup. Use of the
file is not only deprecated but after a couple of hours worth of
attempts, was not working in any event. This despite the fact that the
systemd documentation mentions the use of a “generator” that generates
systemd services from an
rc.local file if one exists.
Docker is the most popular container technology. It is designed to make it easier to create, deploy, and run applications by using containers. Docker behaves similar to a virtual machine hypervisor. But unlike a virtual machine, rather than creating a whole virtual operating system, Docker allows applications to use the same Linux kernel as the system that they’re running on and only requires applications be shipped with things not already running on the host computer. This gives a significant performance boost and reduces the size of the application.
Continue reading “Essential Docker commands”
This is the part one of the four part series on the basics of how to use Ansible. There will be a gradual introduction from basic to intermediate examples how to install, setup and use Ansible. As well as the how to create ansible playbooks and roles. Let’s get started with Part One: Installation and Setup.
Continue reading “Ansible Part I: Installation and Setup”