Bug 499818
| Summary: | More prominent documentation of cman and split brain. | ||
|---|---|---|---|
| Product: | Red Hat Enterprise MRG | Reporter: | Alan Conway <aconway> |
| Component: | Messaging_Programming_Reference | Assignee: | Alison Young <alyoung> |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | MRG Quality Engineering <mrgqe-bugs> |
| Severity: | medium | Docs Contact: | |
| Priority: | high | ||
| Version: | beta | CC: | alyoung, cctrieloff, matt |
| Target Milestone: | 1.3 | Keywords: | Documentation |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-03-17 02:02:09 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
Alan Conway
2009-05-08 12:28:34 UTC
I've added the following text: For most applications, High Availability Messaging Clusters should be used together with Red Hat Clustering Services (RHCS) to avoid the "split-brain" condition, in which a network failure splits the cluster into two sub-clusters that cannot communicate with each other. See the documentation on the --cluster-cman option for details on running using RHCS with High Availability Messaging Clusters. See the CMAN documentation for more detail on CMAN and split-brain conditions. I'd make it a bit stronger and add: Without CMAN, a cluster cannot recover from a split-brain condition. If the network problem is resolved and the sub-clusters start communicating again the results are unpredictable. Closed as fix already implemented |