StatsD and multiple metrics
A quick StatsD note on sending multiple metrics efficiently from operational tooling.
Deep Dive: OpenStack Retrieving Nova Instance Console URLs with XVP and XenAPI/XenServer
A code-level look at how OpenStack retrieves instance console URLs through XVP when using XenAPI and XenServer.
The Host Network Stack
A look at the host network stack and the operational details that matter when debugging virtual networking.
Managing Nagios Configurations
How we managed Nagios configuration changes across OpenStack environments with shared repositories and automation.
Determining Enabled VLANs from SNMP with Python
A practical Python and SNMP approach for discovering which VLANs are enabled on network devices.
Personal Backups with Duply
How I used Duply and Duplicity for personal backups with encryption and remote storage.
Network wiring with XenServer and Open vSwitch
The startup path for a Nova VM on XenServer and the Open vSwitch wiring that happens underneath.
Measuring Virtual Networking Overhead
Introducing netweaver, a small tool for measuring virtual networking overhead with paired packet captures.
Deep Dive: HTB Rate Limiting (QoS) with Open vSwitch and XenServer
A scratchpad-style deep dive into how Open vSwitch and Linux HTB expose rate limits for XenServer virtual interfaces.
Using Swift and logrotate
A simple pattern for rotating logs and moving them into OpenStack Swift for longer-term storage.