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feat: Add BackendUtilization + WeightedZones support (WrrLocality Lb policy) #8634

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Merged
jukie merged 28 commits into from
Apr 23, 2026
Merged

feat: Add BackendUtilization + WeightedZones support (WrrLocality Lb policy) #8634

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9128374
Add BackendUtilization + WeightedZones support (WrrLocality Lb policy)
jukie Apr 1, 2026
554d63a
Merge branch 'main' into wrr-locality-support
jukie Apr 1, 2026
8f37b52
Merge branch 'main' into wrr-locality-support
jukie Apr 1, 2026
9814364
Merge branch 'main' into wrr-locality-support
jukie Apr 2, 2026
376f3a3
Merge branch 'main' into wrr-locality-support
jukie Apr 2, 2026
b5a4983
regen
jukie Apr 2, 2026
a8b431b
Merge branch 'main' into wrr-locality-support
jukie Apr 2, 2026
3950977
Merge branch 'main' into wrr-locality-support
jukie Apr 2, 2026
b587699
Merge branch 'main' into wrr-locality-support
jukie Apr 3, 2026
d0c93b8
Merge branch 'main' into wrr-locality-support
jukie Apr 6, 2026
ba48715
Merge branch 'main' into wrr-locality-support
jukie Apr 9, 2026
a4ad8e5
Merge branch 'main' into wrr-locality-support
jukie Apr 9, 2026
a7dea7c
Merge branch 'main' into wrr-locality-support
jukie Apr 12, 2026
a463838
Fix CEL and add examples
jukie Apr 12, 2026
480bc20
Merge branch 'main' into wrr-locality-support
jukie Apr 13, 2026
3710147
Merge branch 'main' into wrr-locality-support
jukie Apr 14, 2026
7d1822a
Update docs
jukie Apr 14, 2026
4a3795c
Adjust warmup logic
jukie Apr 15, 2026
0de7665
Merge branch 'main' into wrr-locality-support
jukie Apr 15, 2026
0aab7ea
remove ptr usage
jukie Apr 15, 2026
4a17787
Merge branch 'main' into wrr-locality-support
jukie Apr 16, 2026
087f6db
Merge branch 'main' into wrr-locality-support
jukie Apr 17, 2026
a224b0e
Merge branch 'main' into wrr-locality-support
jukie Apr 17, 2026
158c228
Merge branch 'main' into wrr-locality-support
jukie Apr 17, 2026
9ea9f27
Merge branch 'main' into wrr-locality-support
jukie Apr 20, 2026
2cd61e8
Merge branch 'main' into wrr-locality-support
jukie Apr 23, 2026
8b2feb1
Merge branch 'main' into wrr-locality-support
jukie Apr 23, 2026
cd3c9f8
Merge branch 'main' into wrr-locality-support
jukie Apr 23, 2026
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3 changes: 2 additions & 1 deletion api/v1alpha1/loadbalancer_types.go
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -18,7 +18,8 @@ import (
// +kubebuilder:validation:XValidation:rule="self.type == 'DynamicModule' ? has(self.dynamicModule) : !has(self.dynamicModule)",message="If LoadBalancer type is DynamicModule, dynamicModule field needs to be set."
// +kubebuilder:validation:XValidation:rule="self.type in ['Random', 'ConsistentHash', 'DynamicModule'] ? !has(self.slowStart) : true",message="Currently SlowStart is only supported for RoundRobin, LeastRequest, and BackendUtilization load balancers."
// +kubebuilder:validation:XValidation:rule="self.type == 'ConsistentHash' && has(self.zoneAware) ? !has(self.zoneAware.preferLocal) : true",message="PreferLocal zone-aware routing is not supported for ConsistentHash load balancers. Use weightedZones instead."
// +kubebuilder:validation:XValidation:rule="self.type in ['BackendUtilization', 'DynamicModule'] ? !has(self.zoneAware) : true",message="ZoneAware routing is not supported for BackendUtilization and DynamicModule load balancers."
// +kubebuilder:validation:XValidation:rule="self.type == 'BackendUtilization' && has(self.zoneAware) ? !has(self.zoneAware.preferLocal) : true",message="PreferLocal zone-aware routing is not currently supported for BackendUtilization load balancers. Only WeightedZones can be used with BackendUtilization."
// +kubebuilder:validation:XValidation:rule="self.type == 'DynamicModule' ? !has(self.zoneAware) : true",message="ZoneAware routing is not supported for DynamicModule load balancers."
// +kubebuilder:validation:XValidation:rule="has(self.zoneAware) ? !(has(self.zoneAware.preferLocal) && has(self.zoneAware.weightedZones)) : true",message="ZoneAware PreferLocal and WeightedZones cannot be specified together."
// +kubebuilder:validation:XValidation:rule="self.type == 'DynamicModule' ? !has(self.endpointOverride) : true",message="EndpointOverride is not supported for DynamicModule load balancers."
type LoadBalancer struct {
Expand Down
12 changes: 8 additions & 4 deletions ...s/gateway-crds-helm/templates/generated/gateway.envoyproxy.io_backendtrafficpolicies.yaml
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1170,10 +1170,14 @@ spec:
load balancers. Use weightedZones instead.
rule: 'self.type == ''ConsistentHash'' && has(self.zoneAware) ?
!has(self.zoneAware.preferLocal) : true'
- message: ZoneAware routing is not supported for BackendUtilization
and DynamicModule load balancers.
rule: 'self.type in [''BackendUtilization'', ''DynamicModule'']
? !has(self.zoneAware) : true'
- message: PreferLocal zone-aware routing is not currently supported
for BackendUtilization load balancers. Only WeightedZones can
be used with BackendUtilization.
rule: 'self.type == ''BackendUtilization'' && has(self.zoneAware)
? !has(self.zoneAware.preferLocal) : true'
- message: ZoneAware routing is not supported for DynamicModule load
balancers.
rule: 'self.type == ''DynamicModule'' ? !has(self.zoneAware) : true'
- message: ZoneAware PreferLocal and WeightedZones cannot be specified
together.
rule: 'has(self.zoneAware) ? !(has(self.zoneAware.preferLocal) &&
Expand Down
13 changes: 9 additions & 4 deletions ...s/gateway-crds-helm/templates/generated/gateway.envoyproxy.io_envoyextensionpolicies.yaml
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1259,10 +1259,15 @@ spec:
instead.
rule: 'self.type == ''ConsistentHash'' && has(self.zoneAware)
? !has(self.zoneAware.preferLocal) : true'
- message: ZoneAware routing is not supported for BackendUtilization
and DynamicModule load balancers.
rule: 'self.type in [''BackendUtilization'', ''DynamicModule'']
? !has(self.zoneAware) : true'
- message: PreferLocal zone-aware routing is not currently
supported for BackendUtilization load balancers. Only
WeightedZones can be used with BackendUtilization.
rule: 'self.type == ''BackendUtilization'' && has(self.zoneAware)
? !has(self.zoneAware.preferLocal) : true'
- message: ZoneAware routing is not supported for DynamicModule
load balancers.
rule: 'self.type == ''DynamicModule'' ? !has(self.zoneAware)
: true'
- message: ZoneAware PreferLocal and WeightedZones cannot
be specified together.
rule: 'has(self.zoneAware) ? !(has(self.zoneAware.preferLocal)
Expand Down
54 changes: 37 additions & 17 deletions charts/gateway-crds-helm/templates/generated/gateway.envoyproxy.io_envoyproxies.yaml
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -12588,12 +12588,17 @@ spec:
rule: 'self.type == ''ConsistentHash''
&& has(self.zoneAware) ? !has(self.zoneAware.preferLocal)
: true'
- message: ZoneAware routing is not supported
for BackendUtilization and DynamicModule
load balancers.
rule: 'self.type in [''BackendUtilization'',
''DynamicModule''] ? !has(self.zoneAware)
- message: PreferLocal zone-aware routing
is not currently supported for BackendUtilization
load balancers. Only WeightedZones
can be used with BackendUtilization.
rule: 'self.type == ''BackendUtilization''
&& has(self.zoneAware) ? !has(self.zoneAware.preferLocal)
: true'
- message: ZoneAware routing is not supported
for DynamicModule load balancers.
rule: 'self.type == ''DynamicModule''
? !has(self.zoneAware) : true'
- message: ZoneAware PreferLocal and WeightedZones
cannot be specified together.
rule: 'has(self.zoneAware) ? !(has(self.zoneAware.preferLocal)
Expand Down Expand Up @@ -14114,12 +14119,17 @@ spec:
rule: 'self.type == ''ConsistentHash''
&& has(self.zoneAware) ? !has(self.zoneAware.preferLocal)
: true'
- message: ZoneAware routing is not supported
for BackendUtilization and DynamicModule
load balancers.
rule: 'self.type in [''BackendUtilization'',
''DynamicModule''] ? !has(self.zoneAware)
- message: PreferLocal zone-aware routing
is not currently supported for BackendUtilization
load balancers. Only WeightedZones
can be used with BackendUtilization.
rule: 'self.type == ''BackendUtilization''
&& has(self.zoneAware) ? !has(self.zoneAware.preferLocal)
: true'
- message: ZoneAware routing is not supported
for DynamicModule load balancers.
rule: 'self.type == ''DynamicModule''
? !has(self.zoneAware) : true'
- message: ZoneAware PreferLocal and WeightedZones
cannot be specified together.
rule: 'has(self.zoneAware) ? !(has(self.zoneAware.preferLocal)
Expand Down Expand Up @@ -15798,11 +15808,16 @@ spec:
rule: 'self.type == ''ConsistentHash'' &&
has(self.zoneAware) ? !has(self.zoneAware.preferLocal)
: true'
- message: PreferLocal zone-aware routing is
not currently supported for BackendUtilization
load balancers. Only WeightedZones can be
used with BackendUtilization.
rule: 'self.type == ''BackendUtilization''
&& has(self.zoneAware) ? !has(self.zoneAware.preferLocal)
: true'
- message: ZoneAware routing is not supported
for BackendUtilization and DynamicModule
load balancers.
rule: 'self.type in [''BackendUtilization'',
''DynamicModule''] ? !has(self.zoneAware)
for DynamicModule load balancers.
rule: 'self.type == ''DynamicModule'' ? !has(self.zoneAware)
: true'
- message: ZoneAware PreferLocal and WeightedZones
cannot be specified together.
Expand Down Expand Up @@ -17389,10 +17404,15 @@ spec:
instead.
rule: 'self.type == ''ConsistentHash'' && has(self.zoneAware)
? !has(self.zoneAware.preferLocal) : true'
- message: PreferLocal zone-aware routing is not currently
supported for BackendUtilization load balancers.
Only WeightedZones can be used with BackendUtilization.
rule: 'self.type == ''BackendUtilization'' && has(self.zoneAware)
? !has(self.zoneAware.preferLocal) : true'
- message: ZoneAware routing is not supported for
BackendUtilization and DynamicModule load balancers.
rule: 'self.type in [''BackendUtilization'', ''DynamicModule'']
? !has(self.zoneAware) : true'
DynamicModule load balancers.
rule: 'self.type == ''DynamicModule'' ? !has(self.zoneAware)
: true'
- message: ZoneAware PreferLocal and WeightedZones
cannot be specified together.
rule: 'has(self.zoneAware) ? !(has(self.zoneAware.preferLocal)
Expand Down
52 changes: 37 additions & 15 deletions charts/gateway-crds-helm/templates/generated/gateway.envoyproxy.io_securitypolicies.yaml
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1894,10 +1894,15 @@ spec:
instead.
rule: 'self.type == ''ConsistentHash'' && has(self.zoneAware)
? !has(self.zoneAware.preferLocal) : true'
- message: ZoneAware routing is not supported for BackendUtilization
and DynamicModule load balancers.
rule: 'self.type in [''BackendUtilization'', ''DynamicModule'']
? !has(self.zoneAware) : true'
- message: PreferLocal zone-aware routing is not currently
supported for BackendUtilization load balancers. Only
WeightedZones can be used with BackendUtilization.
rule: 'self.type == ''BackendUtilization'' && has(self.zoneAware)
? !has(self.zoneAware.preferLocal) : true'
- message: ZoneAware routing is not supported for DynamicModule
load balancers.
rule: 'self.type == ''DynamicModule'' ? !has(self.zoneAware)
: true'
- message: ZoneAware PreferLocal and WeightedZones cannot
be specified together.
rule: 'has(self.zoneAware) ? !(has(self.zoneAware.preferLocal)
Expand Down Expand Up @@ -3292,10 +3297,15 @@ spec:
instead.
rule: 'self.type == ''ConsistentHash'' && has(self.zoneAware)
? !has(self.zoneAware.preferLocal) : true'
- message: ZoneAware routing is not supported for BackendUtilization
and DynamicModule load balancers.
rule: 'self.type in [''BackendUtilization'', ''DynamicModule'']
? !has(self.zoneAware) : true'
- message: PreferLocal zone-aware routing is not currently
supported for BackendUtilization load balancers. Only
WeightedZones can be used with BackendUtilization.
rule: 'self.type == ''BackendUtilization'' && has(self.zoneAware)
? !has(self.zoneAware.preferLocal) : true'
- message: ZoneAware routing is not supported for DynamicModule
load balancers.
rule: 'self.type == ''DynamicModule'' ? !has(self.zoneAware)
: true'
- message: ZoneAware PreferLocal and WeightedZones cannot
be specified together.
rule: 'has(self.zoneAware) ? !(has(self.zoneAware.preferLocal)
Expand Down Expand Up @@ -4976,10 +4986,17 @@ spec:
Use weightedZones instead.
rule: 'self.type == ''ConsistentHash'' && has(self.zoneAware)
? !has(self.zoneAware.preferLocal) : true'
- message: PreferLocal zone-aware routing is not
currently supported for BackendUtilization load
balancers. Only WeightedZones can be used with
BackendUtilization.
rule: 'self.type == ''BackendUtilization'' &&
has(self.zoneAware) ? !has(self.zoneAware.preferLocal)
: true'
- message: ZoneAware routing is not supported for
BackendUtilization and DynamicModule load balancers.
rule: 'self.type in [''BackendUtilization'', ''DynamicModule'']
? !has(self.zoneAware) : true'
DynamicModule load balancers.
rule: 'self.type == ''DynamicModule'' ? !has(self.zoneAware)
: true'
- message: ZoneAware PreferLocal and WeightedZones
cannot be specified together.
rule: 'has(self.zoneAware) ? !(has(self.zoneAware.preferLocal)
Expand Down Expand Up @@ -6665,10 +6682,15 @@ spec:
instead.
rule: 'self.type == ''ConsistentHash'' && has(self.zoneAware)
? !has(self.zoneAware.preferLocal) : true'
- message: ZoneAware routing is not supported for BackendUtilization
and DynamicModule load balancers.
rule: 'self.type in [''BackendUtilization'', ''DynamicModule'']
? !has(self.zoneAware) : true'
- message: PreferLocal zone-aware routing is not currently
supported for BackendUtilization load balancers. Only
WeightedZones can be used with BackendUtilization.
rule: 'self.type == ''BackendUtilization'' && has(self.zoneAware)
? !has(self.zoneAware.preferLocal) : true'
- message: ZoneAware routing is not supported for DynamicModule
load balancers.
rule: 'self.type == ''DynamicModule'' ? !has(self.zoneAware)
: true'
- message: ZoneAware PreferLocal and WeightedZones cannot
be specified together.
rule: 'has(self.zoneAware) ? !(has(self.zoneAware.preferLocal)
Expand Down
12 changes: 8 additions & 4 deletions ...gateway-helm/charts/crds/crds/generated/gateway.envoyproxy.io_backendtrafficpolicies.yaml
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -1169,10 +1169,14 @@ spec:
load balancers. Use weightedZones instead.
rule: 'self.type == ''ConsistentHash'' && has(self.zoneAware) ?
!has(self.zoneAware.preferLocal) : true'
- message: ZoneAware routing is not supported for BackendUtilization
and DynamicModule load balancers.
rule: 'self.type in [''BackendUtilization'', ''DynamicModule'']
? !has(self.zoneAware) : true'
- message: PreferLocal zone-aware routing is not currently supported
for BackendUtilization load balancers. Only WeightedZones can
be used with BackendUtilization.
rule: 'self.type == ''BackendUtilization'' && has(self.zoneAware)
? !has(self.zoneAware.preferLocal) : true'
- message: ZoneAware routing is not supported for DynamicModule load
balancers.
rule: 'self.type == ''DynamicModule'' ? !has(self.zoneAware) : true'
- message: ZoneAware PreferLocal and WeightedZones cannot be specified
together.
rule: 'has(self.zoneAware) ? !(has(self.zoneAware.preferLocal) &&
Expand Down
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