Merge !1763: /fallback: apply during reload (force kresd restarts)

Author: vcunat

NEWS

@@ -1,3 +1,11 @@
+Knot Resolver 6.0.18 (2026-mm-dd)
+=================================
+
+Bugfixes
+--------
+- reload did not apply changes to /fallback (!1763)
+
+
 Knot Resolver 6.0.17 (2025-12-02)
 =================================
 

python/knot_resolver/datamodel/config_schema.py

@@ -135,6 +135,7 @@ class Raw(ConfigSchema):
 
     _LAYER = Raw
 
+    #### When ADDING options, please also update config_nodes() in ../manager/manager.py
     nsid: Optional[EscapedStr]
     hostname: EscapedStr
     rundir: WritableDir

python/knot_resolver/datamodel/templates/kresd.lua.j2

@@ -31,7 +31,7 @@ nsid.name('{{ cfg.nsid }}' .. worker.id)
 -- DNSSEC section -----------------------------------
 {% include "dnssec.lua.j2" %}
 
--- FORWARD section ----------------------------------
+-- FORWARD and FALLBACK section ----------------------------------
 {% include "forward.lua.j2" %}
 
 -- CACHE section ------------------------------------

python/knot_resolver/manager/manager.py

@@ -119,18 +119,23 @@ def config_nodes(config: KresConfig) -> List[Any]:
             return [
                 config.nsid,
                 config.hostname,
+                # config.rundir not allowed to change
                 config.workers,
+                # config.management not allowed to change and not affecting workers anyway
                 config.options,
                 config.network,
+                # config.views fully handled by policy-loader
+                # config.local_data fully handled by policy-loader
                 config.forward,
+                config.fallback,
                 config.cache,
                 config.dnssec,
                 config.dns64,
                 config.logging,
                 config.monitoring,
-                config.lua,
                 config.rate_limiting,
                 config.defer,
+                config.lua,
             ]
 
         # register and immediately call a verifier that validates config with 'canary' kresd process