One item I’ve done repeatedly while doing network consulting services is configuring high availability (HA) networks. The recommended way is Virtual Router Redundancy Protocol (VRRP). This requires that you have two firewalls for every location and they run in...
One of the most important aspects of our Linux server management service is operating system patching. With Windows, Microsoft has made this trivial by means of the Windows Update utility. Microsoft is the single source of the patches, and assuming that the patches...
The goal of a typical system administrator is to get a job or task done as quickly as possible, without worrying about how elegant a solution might be. Reusing any existing scripts, tools, or utilities are always the first line in tackling the job. Often times, the...
In my last post, I gave an overview of Bacula, the enterprise-level free backup software. For this post I wanted to dig into the software a bit more and show how simple it is to setup a weekly backup job. One of the first things we do at SPK when working with a new...
VMWare is wonderful for getting full utilization of scarce resource. However, if you're on a limited budget, affording ESX clustered hosts for all needs is overkill. Sometimes a free ESXi server is enough. In the latter, we ran into challenges doing backups. ...
Traditionally, using a VPN (Virtual Private Network) to connect to a remote site has been a technical – and oftentimes troublesome – requirement. With the growing popularity of using “remote programmers”, I see requests for purchasing Cisco routers and Windows...
In part 1 of this series, I introduced the APCUPSD software package which allows you to monitor APC UPS units. As we head into the winter months, having a functioning UPS is critical for your infrastructure. Just as critical as the UPS itself is the ability to monitor...
Holes in your IT infrastructure can make for some awkward situations. Whether you're dealing with sensitive customer information, upcoming product designs, or simply just don't want people messing with your stuff, maintaining system integrity can be difficult....
With today's computers, cooling is critical. When moving to a new site, it's necessary to ensure the new server room will meet your needs prior to move-in. Using some quick estimation techniques, there's ways to ensure the needed power for your servers. Here's a...
Imagine (if you dare) the worst case scenario with your company's data. Double disk drive failure, all data lost. You need to recover that data as fast as possible due to deadlines. You've been diligent about your backups using Bacula, but now they are going to be put...
The other day, I went to a presentation of FlexPOD and was impressed. FlexPOD is a collaboration of efforts from Cisco, VMWare, and NetApp. What it offers is a highly flexible framework to grow IT datacenters they are calling Infrastructure as a service (IIAS). If...
Have you ever used Git? Git has quickly grown to become one of today's most popular source code management solutions for software engineering projects large, small, professional and personal. Developed by Linus Torvalds, Git is classified as a “distributed version...