CentOS Wireless: Fix when it breaks!
Hi All – if you have ditched NetworkManager (as I have) and you are still running into wireless LAN access problems…check out this script!
Category: Network
proxytunnel 1.9.0 Compile Fix for Mac OS-X
Need to run proxytunnel 1.9.0 on your OS-X Mavericks Mac? Well, just try it with the latest Brew installed and it breaks. Read on to see how to fix it!
Debugging Neutron DHCP Failures on OpenStack
Hi All. Today’s adventure touches on a common OpenStack Neutron theme: “I just created a VM. It’s running. It says it has an IP address. And I can’t ping it!!” Read on for tips on debugging Neutron DHCP Failures on …
OpenStack: Fix “Missing” External IPs in Neutron
Have you ever assigned a “floating” IP on your external network to an OpenStack VM…but not been able to ping it? Read our article for info on how we workaround the problem!
OpenStack: Adding External Networks to Neutron with GRE
Hello All – today’s post is on Neutron using GRE Networking. The all-in-one OpenStack gives you GRE by default but only a single external subnet. Read on to learn how to add more external networks!
CentOS Wireless Problems and Dumping NetworkManager
Hello All, it’s been a while since I’ve posted. This post will discuss how you can dump NetworkManager and still get your wireless to work on Linux (CentOS 6.5, specifically). Read on for more!
What Makes Up Networked Storage Throughput?
While researching distributed cloud storage we came up with these interesting points on storage throughput along with some great links for additional reading. Input/Output Per Second (IOPs). This is the most-commonly quoted measurement. For Amazon’s Relation Database Service (RDS) public …
VMware dvSwitches and Port Mirroring
When debugging a network problem, the first one wants to do is to…get the packets! In the past watching network traffic in real-time required either “promiscuous” mode network cards (NICs) or using hardware-based “port mirroring” on physical switches. Read below …
CCNA – Migrate Software Routers to Hardware Routers
Click here to download the whitepaper “Cisco – Software Router Migration” now! In this paper, the reader follows along as a set of software routers are migrated to Cisco hardware routers. Software routers, while easy to setup and maintain, suffer …
CCNA – Migrate Software Routers to Hardware Routers Read more »
NFS via Server 2008 R2 to ESXi: The Book
This article details exactly how to take an arbitrary server, install a *hardened* Windows Server 2008 R2 (W2K8R2) image on it, and then use that W2K8R2 server to deliver NFS to ESXi hosts. We had to do this recently to …