- Red Hat Enterprise Linux (RHEL) 6 or 7 with the High Availability Add-On
Useful References and Guides
- Support Policies for RHEL High Availability Clusters
- Explore features - Overview of transport protocols
- Design guidance - Selecting the transport protocol
This guide lays out Red Hat's policies regarding the communication transport protocols available for usage in RHEL High Availability clusters. Users of RHEL High Availability clusters should adhere to these policies in order to be eligible for support from Red Hat with the appropriate product support subscriptions.
udpu transport: Red Hat's support for this transport protocol is subject to the following conditions:
- RHEL 7:
udputransport is supported on all package releases
- RHEL 6 minimum package releases for Red Hat support of
udpu: corosync-1.4.1-4.el6, cman-22.214.171.124-23.el6
- Nodes can not be added to the cluster "on-the-fly" when using this transport. Rather, the cluster must be completely stopped, then started again with an updated configuration containing the new full member list.
udp transport with broadcast messaging: Red Hat's support for
broadcast messaging mode within the
udp transport is subject to the following conditions:
- Broadcast may not be used in clusters utilizing an IPv6 network as the interconnect. Either
udpwith multicast or
udpumust be used.
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