Radar: connect with agents

content/operate/radar/_index.md

@@ -36,6 +36,7 @@ Radar reads each cluster's management interface using credentials you supply, th
 This approach has two significant consequences:
 
 - **Radar needs credentials for every cluster you want to see.** Getting that access in place is most of the setup work. See [Connect clusters]({{< relref "/operate/radar/connect" >}}).
+- **Radar must be able to reach each cluster.** Where it can't, such as a cluster behind a firewall or on an isolated network, an agent you install inside that network collects and submits on Radar's behalf. See [Connect clusters with an agent]({{< relref "/operate/radar/agent" >}}).
 - **Radar shows the last successful state collection rather than live state.** Radar collects the state of every connected cluster — Redis Software, Redis Open Source, Redis Cloud, Amazon ElastiCache, and Google Memorystore — on a fixed interval, so a value is only as fresh as the last time Radar reached that cluster. Radar shows that age alongside the data.
 
 ## Next steps

content/operate/radar/connect.md

@@ -35,7 +35,7 @@ Connect Redis Software clusters and Redis Open Source instances that you run you
 For every connection you need:
 
 - **Credentials for the cluster or instance.** Radar uses the same management interface you do, so it needs an account there. Read access is enough.
-- **Network access from Radar to the source.** Radar connects outbound. Nothing needs to connect back to Radar, so no inbound rule is required on the Radar host.
+- **Network access from Radar to the source.** Radar connects outbound. Nothing needs to connect back to Radar, so no inbound rule is required on the Radar host. If Radar can't reach a cluster directly, install an agent inside that network instead. See [Connect clusters with an agent]({{< relref "/operate/radar/agent" >}}).
 
 ### Connect a Redis Software cluster
 

content/operate/radar/release-notes/2026-9-5.md

@@ -0,0 +1,29 @@
+---
+title: Redis Radar release notes 2026.9.5
+alwaysopen: false
+categories:
+- docs
+- operate
+- radar
+description: Connect clusters that Radar can't reach directly by installing an agent.
+linkTitle: 2026.9.5
+weight: 9
+tags:
+- self-managed
+---
+
+Radar can now collect from clusters it can't reach directly. You install an agent on a host inside the network that holds them, and the agent opens an outbound connection to Radar.
+
+This is a Short-Term Support (STS) release. See [Self-managed releases]({{< relref "/operate/radar/release-notes" >}}#self-managed-releases) for more details.
+
+## Highlights
+
+### Connect clusters with an agent
+
+- Collect from **Redis Software** and **Redis Open Source** clusters behind a firewall, in a private subnet, or on a segmented network. Radar needs no inbound access to your network.
+- Choose between two modes. **Managed** agents receive source credentials from Radar, so you add and change sources from the Radar UI. **Static** agents read their sources from a file on the agent host, so those credentials never leave it.
+- Collect from a fully isolated network by exporting to a file on one host and submitting it from another.
+- Install from standalone agent packages for Linux on amd64 and arm64, including Federal Information Processing Standards (FIPS) 140-3 builds.
+- Track every agent under **Settings > Agents** and in the **Connected agents** list on the Connections page, with its mode, platform, version, and last heartbeat.
+
+Radar accepts agent connections on its agent gRPC endpoint, which isn't enabled on every Radar deployment. See [Connect clusters with an agent]({{< relref "/operate/radar/agent" >}}).

content/operate/radar/release-notes/_index.md

@@ -34,6 +34,7 @@ STS releases receive security and bug fixes for 6 months after release. LTS rele
 
 Install a new release when you're ready to upgrade. See [Install Radar]({{< relref "/operate/radar/install" >}}).
 
-| Release                                                            | Support track | What changed     |
-|--------------------------------------------------------------------|---------------|------------------|
-| [2026.9.2]({{< relref "/operate/radar/release-notes/2026-9-2" >}}) | STS           | Initial release. |
+| Release                                                            | Support track | What changed                         |
+|--------------------------------------------------------------------|---------------|--------------------------------------|
+| [2026.9.5]({{< relref "/operate/radar/release-notes/2026-9-5" >}}) | STS           | Connect clusters with an agent.      |
+| [2026.9.2]({{< relref "/operate/radar/release-notes/2026-9-2" >}}) | STS           | Initial release.                     |