Changelog and version bump for v2.15.1

Author: julianbrost

CHANGELOG.md

@@ -7,6 +7,29 @@ documentation before upgrading to a new release.
 
 Released closed milestones can be found on [GitHub](https://github.com/Icinga/icinga2/milestones?state=closed).
 
+## 2.15.1 (2025-10-16)
+
+This version includes bug fixes regarding config deployments and improvements
+to allow for better debugging of problems related to JSON-RPC cluster
+communication.
+
+Note that one fix affects the logrotate configuration. If it was modified
+locally, it might not be updated automatically by the package manager and
+applying the changes manually is necessary. For details, please check the
+[upgrading docs](https://icinga.com/docs/icinga-2/latest/doc/16-upgrading-icinga-2/#upgrading-to-2-15-1).
+
+* Don't send signals as root in safe-reload script and logrotate config. #10590
+* When a reload triggered from Icinga Director (or the /v1/config API) fails,
+  the corresponding state is cleared, allowing to deploy a new config without
+  having to restart Icinga 2 manually first. #10584
+* Add JSON-RPC utilization metrics and troubleshooting docs. #10586
+* When sending cluster messages to other zones, prefer endpoints in the order
+  as specified in the zone configuration. #10587
+* Track the number of JSON-RPC messages received for each message type per
+  endpoint. #10585
+* Add support for building with Boost v1.89 and use it on Windows. #10578
+* Windows: Update to OpenSSL 3.0.18. #10595
+
 ## 2.15.0 (2025-06-18)
 
 This Icinga 2 release is focused on adding Icinga 2 dependencies support to Icinga DB, but also includes a number

ICINGA2_VERSION

@@ -1,2 +1,2 @@
-Version: 2.15.0
+Version: 2.15.1
 Revision: 1