DevOps & System Administration

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DevOps & System Admin.

Linux Encryption in the Cloud using LUKS on Linode

See how I set up Linux encryption using LUKS on Linode with an encrypted root partition. Includes Linode boot process, GRUB, cryptsetup, and dm-crypt.

DevOps & System Admin.

Preparing Machines for Workshops with Vagrant, VirtualBox, & Puppet

If you're giving a workshop, I recommend checking out Vagrant, VirtualBox, and puppet or chef for creating the workshop development environment.

DevOps & System Admin.

BERKS! – Simplifying Chef Solo Cookbook Management with Berkshelf

Berks is a new tool we've started using to keep repositories simple, even as the requirements grow.

DevOps & System Admin.

Chef Solo with Capistrano

Capistrano can facilitate the use of Chef Solo for configuring and managing servers. This allows us to provision and manage servers in different environments.

DevOps & System Admin.

Useful iptables Port Forwarding Patterns

iptables is a packet filtering tool for configuring nat and port forwarding. Here are some patterns to help setup port and ip address redirection.

DevOps & System Admin.

From Imperative to Declarative System Configuration with Puppet

Start transitioning from imperative to declarative thinking through the use of Puppet's Exec resource type.

DevOps & System Admin.

Deploying from Git with Capistrano

With a few changes to our Capistrano configuration, we are able to deploy directly from the source code repository.

DevOps & System Admin.

Standalone Puppet with Capistrano

Puppet is a great way to manage server configuration, but the client/server model can be too complex. The standalone Puppet agent can be run with Capistrano.

DevOps & System Admin.

Restoring Deleted Files in Linux from the ext3 Journal

With ext3, you can reconstruct (many) deleted files based on entries from the filesystem journal.

DevOps & System Admin.

Creating Encrypted, Offsite Backups with Duplicity

We found a way to create secure, space-efficient remote backups with Duplicity. It supports AWS S3 and other kinds of remote storage with compression and encryption.

DevOps & System Admin.

Setting up BIND9 and DHCP3 on Ubuntu with Dynamic DNS

Learn how to set up a DNS/DHCP server on Ubuntu with BIND9 and DHCP3-server to perform Dynamic DNS updates, also troubleshoot common problems and errors.

DevOps & System Admin.

Load Balancing and Reverse Proxying with Nginx

Using Nginx is a convenient method to set up a load balancer and remote proxy for websites and web apps. Example configurations demonstrate use cases.

DevOps & System Admin.

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