Modern browsers have APIs called
find one or more elements matching a CSS selector. I'm assuming basic
familiarity with CSS selectors: how you select elements, classes and ids. If
you haven't used them, the Mozilla Developer Network has an excellent
Welcome to part 2 of Jenkins Post-build Plugin development tutorial. This post talks in detail about the plugin project entities and their interactions with each other. To brush up on the previous post, please visit Jenkins Post-build Plugin Part 1.
Wes McKinney started working on Pandas in 2008. Since then, Pandas has become one of the most popular and useful software components for the data scientist. For good reason; using Python, Pandas and iPython/Jupyter notebooks makes it simple and quick to perform analysis on various datasets.
In this post, we perform some basic analysis on the City of Baltimore employee salary data from data.gov, but this technique can be used on a wide variety of data sets very easily.
Pandas and Jupyter notebooks make this work quick. It may be surprising to see where the money goes!
This is the first part of a two-part tutorial series to develop a Jenkins plugin (specifically, Jenkins post-build plugin). Jenkins is a very popular continuous-integration tool and with the small amount of (scattered) information present out there, it is really hard for a beginner to dive in this amazing area of extending it - Plugins!
This is the sixth and final installment in a series demonstrating how to install OpenStack from source. The five previous articles:
- Install Keystone
- Install Glance and Neutron
- Install Nova
- Install Neutron on the Network node
- Install the Compute node
Previously we installed the Identity service (keystone), Image service (glance), Networking service (neutron), and the Compute service (nova) onto the controller node. We also installed neutron onto the network node and nova and neutron onto the compute node. In this section, we turn our attention to finishing up by installing the Volume service (cinder) and dashboard (horizon) onto the controller node.
Container technology is evolving at a very rapid pace. The purpose of the webinar talk in this post is to describe the current state of container technologies within the OpenStack Ecosystem. Topics we will cover include:
- How OpenStack vendors and operators are using containers to create efficiencies in deployment of the control plane services
- Approaches OpenStack consumers are taking to deploy container-based applications on OpenStack clouds
The Rackspace .NET SDK beta is now available! This is the first step towards improving the .NET experience for OpenStack and Rackspace developers. Rackspace.NET enables you to work with both Rackspace services, which are based on OpenStack, and unique Rackspace offerings, such as hybrid cloud. This is in the same spirit as the new Rack CLI which was announced last week.
OpenStack users will have a clean SDK dedicated to their needs and moving at the pace of OpenStack. Rackspace customers will have a native experience, seeing only functionality that is supported by Rackspace, using Rackspace terminology.
For more details on how this will improve OpenStack.NET, checkout Rackspace.NET and OpenStack.NET: Peas and Carrots.
This is the fifth installment in a series of installing OpenStack from source. The four previous articles can be found here:
We installed the Identity service (keystone), Image service (glance), Networking service (neutron) and the Compute service (nova) onto the controller node, and then we turned our attention to the network node to install the neutron agents to support the network layers two and three. Now, we turn our attention to the compute node to install both neutron and nova.
It's not every day that we get to release a new tool! Awesome Rackers across the company produce tools all the time, but we think today's news stands alone. We're thrilled to announce the first beta release of
rack, a new global command-line interface purpose-built for interacting with the Rackspace cloud.
This is the fourth installment, in a series showing how to install OpenStack from source. In the three previous articles:
We installed the Identity service (keystone), Image service (glance), Networking service (neutron) and the Compute service (nova) onto the controller node. In this section, we turn our attention to the network node, to install the neutron agents to support network layers two and three.