Important: This topic does not apply to clusters. All cluster nodes (master, peers, and search heads) must run the same version of Splunk Enterprise. See "Upgrade a cluster" in the Managing Indexers and Clusters manual.
Even with non-clustered deployments, it is best to upgrade search heads and search peers at the same time, to take full advantage of the latest search capabilities. If you cannot do so, read this topic.
Compatibility between search heads and search peers
6.x search heads are compatible with 6.x and 5.x search peers, in a non-clustered environment. The search head must be at the same or higher level than the search peers:
- A 6.x search head is compatible with a 5.x search peer.
- A 5.x search head is not compatible with a 6.x search peer.
Mixed-version distributed search compatibility
You can run a 6.x search head against 5.x search peers, but there are a few compatibility issues to be aware of. To take full advantage of the 6.x feature set, it is recommended that you upgrade both search head(s) and search peers at the same time.
This section describes the compatibility issues.
6.x features in a mixed-version deployment
When running a 6.x search head against 5.x search peers, note the following:
- You can use data models on the search head but only without report acceleration.
- You can use Pivot on the search head.
- You can run predictive analytics (the
predictcommand) on the search head.
Licenses for distributed search
Overview of configuration
This documentation applies to the following versions of Splunk® Enterprise: 6.0, 6.0.1, 6.0.2, 6.0.3, 6.0.4, 6.0.5, 6.0.6, 6.0.7, 6.0.8, 6.0.9, 6.0.10, 6.0.11, 6.0.12, 6.0.13, 6.0.14, 6.0.15, 6.1, 6.1.1, 6.1.2, 6.1.3, 6.1.4, 6.1.5, 6.1.6, 6.1.7, 6.1.8, 6.1.9, 6.1.10, 6.1.11, 6.1.12, 6.1.13, 6.1.14