Enable cell affinity - ODR
The cell affinity function preserves sessions even in the event of an on demand router outage when we configure unbridged, on demand router topologies.
The cell affinity function prevents the loss of sessions when...
- There are multiple ODRs within multiple, unbridged cells
- The IBM HTTP Server is configured to forward session traffic, either through load-balancing or failover, to more than one ODR.
Tasks
- In the administrative console, select...
System administration > Cell > Custom properties
- Set the custom cell property odrSessionAffinityEnabled to true.
- Configure generic server clusters for other ODR cells.
- If we are configuring a multi-tiered configuration, the ODRs in one tier must be configured and operate independently from the ODRs in the other tiers. See configuring cell affinity in a multi-tiered environment. Note that we can optionally perform this step in a single-tiered environment if we want to use a cookie name other than ODRSESSIONID.
- Generate a plugin-cfg.xml.
- Merge plugin-cfg.xmls into one plugin-cfg.xml file.
- Install the new plugin-cfg.xml file on the IBM HTTP server.
Subtopics
- Cell affinity function
- Use generic server clusters with cell affinity
- Configure cell affinity in a multi-tiered environment
- Generate a plugin-cfg.xml
- pluginMerge script
- Cell affinity when an ODR fails
Related:
Intelligent Management: custom properties Cell affinity function Use generic server clusters with cell affinity Create and configure ODRs Configure an ODR to dynamically update the web server plug-in configuration Generate a plugin-cfg.xml Configure cell affinity in a multi-tiered environment Configure ODRs pluginMerge script