2.2. Notable Technical Changes
OpenShift Enterprise 2.0 has new channels in both RHN Classic and Red Hat Subscription Management. See the OpenShift Enterprise Deployment Guide for an updated list of channel names and for more information on available repositories.
iptables Port Proxy Solution
OpenShift Enterprise now uses iptables instead of HAProxy as the port proxy solution. See the OpenShift Enterprise Deployment Guide for details on configuring the port proxy.
OpenShift Enterprise's MCollective infrastructure now utilizes the Software Collection Library (SCL). This includes the MCollective agent on node hosts and the MCollective client on broker hosts. MCollective packages and services now use a ruby193-mcollective prefix, which results in changes to relevant commands and file locations. See the OpenShift Enterprise Deployment Guide for more information on MCollective updates.
Previously, all deployed applications used a single front-end HTTP service. Now, administrators can configure their front-end server through a set of available plug-ins. See the OpenShift Enterprise Deployment Guide for more information on changing the front-end server plug-ins.
OpenShift Enterprise 2.0 introduces enhancements which minimize downtime for scaled applications during deployments and restarts. Scaled web cartridge restarts experience zero downtime. Application deployments experience minimized downtime when using a single HAProxy cartridge, and zero downtime when using multiple HAProxy cartridges.
