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Chapter 13. Reference
Find useful information for Data Grid clusters that you create with Data Grid Operator.
13.1. Network Services
Internal service
- Allow Data Grid nodes to discover each other and form clusters.
- Provide access to Data Grid endpoints from clients in the same OpenShift namespace.
| Service | Port | Protocol | Description |
|---|---|---|---|
|
|
| TCP | Internal access to Data Grid endpoints |
|
|
| TCP | Cluster discovery |
External service
Provides access to Data Grid endpoints from clients outside OpenShift or in different namespaces.
You must create the external service with Data Grid Operator. It is not available by default.
| Service | Port | Protocol | Description |
|---|---|---|---|
|
|
| TCP | External access to Data Grid endpoints. |
Cross-site service
Allows Data Grid to back up data between clusters in different locations.
| Service | Port | Protocol | Description |
|---|---|---|---|
|
|
| TCP | JGroups RELAY2 channel for cross-site communication. |
Reference
13.2. Data Grid Operator Upgrades
Data Grid Operator upgrades Data Grid when new versions become available.
To upgrade Data Grid clusters, Data Grid Operator checks the version of the image for Data Grid nodes. If Data Grid Operator determines that a new version of the image is available, it gracefully shuts down all nodes, applies the new image, and then restarts the nodes.
On Red Hat OpenShift, the Operator Lifecycle Manager (OLM) enables upgrades for Data Grid Operator. When you install Data Grid Operator, you select either Automatic or Manual updates with the Approval Strategy. This determines how Data Grid Operator upgrades clusters. See the OpenShift documentation for more information.
13.3. Technology Preview
Technology Preview features or capabilities are not supported with Red Hat production service-level agreements (SLAs) and might not be functionally complete. Red Hat does not recommend using them for production. These features provide early access to upcoming product features, enabling customers to test functionality and provide feedback during the development process.
For more information, see Red Hat Technology Preview Features Support Scope.
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