Justin Kulesza on Atomic Spin

Speeding Up your Website with Varnish

Varnish sits in front of any HTTP compatible server, and it can be configured to selectively cache the contents. Here's how to set it up and tweak it.

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.

Ruby

Is Your Application Running with Ruby – Slow?

Ruby may not be compiled for optimal performance with RVM. I benchmarked Ruby, and compiled Ruby with optimization flags to improve performance.

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.

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.

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.

Developer Tools

Safe Usage of /bin/rm

Safe use of /bin/rm is important to prevent destroying critical data. A wrapper script for /bin/rm can help prevent accidental deletions.

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.

Developer Tools

Safeguarding Your Productivity with Backups

Make a bootable backup of your hard drive so that you can quickly recover in the event of a hard drive failure and maintain your productivity.

DevOps & System Admin.

Setting Up a Network Share – Part I: NFS

Setting up NFS on a Linux server to provide client access to Mac OS X boxes can be a challenge. Proper setup and configuration are necessary.

DevOps & System Admin.

Creating a Custom Yum Repository for Puppet

Puppet's automated management of installed applications and libraries can be enhanced with custom package repositories, such as a custom yum repository.

Justin Kulesza

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