cobaltcore-dev · umswmayj · Jul 28, 2026 · Jul 29, 2026 · Jul 29, 2026 · Jul 29, 2026
@@ -14,7 +14,7 @@ jobs:
       issues: write
       pull-requests: write
     steps:
-      - uses: actions/stale@v10
+      - uses: actions/stale@v11
         with:
           repo-token: ${{ secrets.GITHUB_TOKEN }}
           days-before-issue-stale: 90

@@ -374,10 +374,12 @@ func main() {
 	committedResourceGVK := schema.GroupVersionKind{Group: "cortex.cloud", Version: "v1alpha1", Kind: "CommittedResource"}
 	flavorGroupCapacityGVK := schema.GroupVersionKind{Group: "cortex.cloud", Version: "v1alpha1", Kind: "FlavorGroupCapacity"}
 	projectQuotaGVK := schema.GroupVersionKind{Group: "cortex.cloud", Version: "v1alpha1", Kind: "ProjectQuota"}
+	multiclusterMonitor := multicluster.NewMonitor("cortex_")
 	multiclusterClient := &multicluster.Client{
 		HomeCluster:    homeCluster,
 		HomeRestConfig: restConfig,
 		HomeScheme:     scheme,
+		Monitor:        multiclusterMonitor,
 		ResourceRouters: map[schema.GroupVersionKind]multicluster.ResourceRouter{
 			hvGVK:                  multicluster.HypervisorResourceRouter{},
 			reservationGVK:         multicluster.ReservationsResourceRouter{},
@@ -398,6 +400,7 @@ func main() {
 	metricsConfig := conf.GetConfigOrDie[monitoring.Config]()
 	metrics.Registry = monitoring.WrapRegistry(metrics.Registry, metricsConfig)
 	metrics.Registry.MustRegister(&logMetricsMonitor)
+	metrics.Registry.MustRegister(multiclusterMonitor)
 
 	// TODO: Remove me after scheduling pipeline steps don't require DB connections anymore.
 	metrics.Registry.MustRegister(&db.Monitor)

@@ -285,6 +285,7 @@ func main() {
 	// This is useful to distinguish metrics from different deployments.
 	metricsConfig := conf.GetConfigOrDie[monitoring.Config]()
 	metrics.Registry = monitoring.WrapRegistry(metrics.Registry, metricsConfig)
+	metrics.Registry.MustRegister(multiclusterClient.Monitor)
 
 	// API endpoint.
 	mux := http.NewServeMux()
@@ -360,6 +361,7 @@ func setupMulticlusterClient(ctx context.Context, mgr manager.Manager, restConfi
 		HomeRestConfig:  restConfig,
 		HomeScheme:      scheme,
 		ResourceRouters: multicluster.DefaultResourceRouters,
+		Monitor:         multicluster.NewMonitor("cortex_"),
 	}
 	mclConfig := conf.GetConfigOrDie[multicluster.ClientConfig]()
 	if err := mcl.InitFromConf(ctx, mgr, mclConfig); err != nil {

@@ -6,10 +6,10 @@ require (
 	github.com/cobaltcore-dev/openstack-hypervisor-operator v1.2.3
 	github.com/go-gorp/gorp v2.2.0+incompatible
 	github.com/gophercloud/gophercloud/v2 v2.13.0
-	github.com/ironcore-dev/ironcore v0.4.3
+	github.com/ironcore-dev/ironcore v0.5.0
 	github.com/prometheus/client_golang v1.24.1
 	github.com/prometheus/client_model v0.6.2
-	github.com/sapcc/go-bits v0.0.0-20260723170232-89c8670b5841
+	github.com/sapcc/go-bits v0.0.0-20260730170321-f6f727520601
 	go.xyrillian.de/gg v1.11.1
 	k8s.io/api v0.36.3
 	k8s.io/apimachinery v0.36.3
@@ -29,7 +29,7 @@ require (
 	github.com/go-openapi/swag/stringutils v0.25.1 // indirect
 	github.com/go-openapi/swag/typeutils v0.25.1 // indirect
 	github.com/go-openapi/swag/yamlutils v0.25.1 // indirect
-	github.com/gofrs/uuid/v5 v5.4.0 // indirect
+	github.com/gofrs/uuid/v5 v5.5.0 // indirect
 	github.com/gorilla/mux v1.8.1 // indirect
 	github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
 	k8s.io/streaming v0.36.3 // indirect
@@ -63,7 +63,7 @@ require (
 	github.com/go-openapi/swag v0.25.1 // indirect
 	github.com/go-openapi/swag/jsonname v0.25.4 // indirect
 	github.com/golang-migrate/migrate/v4 v4.19.1 // indirect
-	github.com/google/cel-go v0.26.0 // indirect
+	github.com/google/cel-go v0.29.0 // indirect
 	github.com/google/gnostic-models v0.7.1 // indirect
 	github.com/google/go-cmp v0.7.0 // indirect
 	github.com/google/uuid v1.6.0
@@ -73,7 +73,7 @@ require (
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/kylelemons/godebug v1.1.0 // indirect
 	github.com/lib/pq v1.12.3
-	github.com/mattn/go-sqlite3 v1.14.48
+	github.com/mattn/go-sqlite3 v1.14.49
 	github.com/moby/sys/user v0.4.0 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.3-0.20250322232337-35a7c28c31ee // indirect
@@ -91,7 +91,6 @@ require (
 	github.com/sirupsen/logrus v1.9.3 // indirect
 	github.com/spf13/cobra v1.10.2 // indirect
 	github.com/spf13/pflag v1.0.10 // indirect
-	github.com/stoewer/go-strcase v1.3.1 // indirect
 	github.com/x448/float16 v0.8.4 // indirect
 	github.com/ziutek/mymysql v1.5.4 // indirect
 	go.opentelemetry.io/auto/sdk v1.2.1 // indirect

@@ -102,16 +102,16 @@ github.com/go-sql-driver/mysql v1.5.0 h1:ozyZYNQW3x3HtqT1jira07DN2PArx2v7/mN66gG
 github.com/go-sql-driver/mysql v1.5.0/go.mod h1:DCzpHaOWr8IXmIStZouvnhqoel9Qv2LBy8hT2VhHyBg=
 github.com/go-task/slim-sprig/v3 v3.0.0 h1:sUs3vkvUymDpBKi3qH1YSqBQk9+9D/8M2mN1vB6EwHI=
 github.com/go-task/slim-sprig/v3 v3.0.0/go.mod h1:W848ghGpv3Qj3dhTPRyJypKRiqCdHZiAzKg9hl15HA8=
-github.com/gofrs/uuid/v5 v5.4.0 h1:EfbpCTjqMuGyq5ZJwxqzn3Cbr2d0rUZU7v5ycAk/e/0=
-github.com/gofrs/uuid/v5 v5.4.0/go.mod h1:CDOjlDMVAtN56jqyRUZh58JT31Tiw7/oQyEXZV+9bD8=
+github.com/gofrs/uuid/v5 v5.5.0 h1:FkPv6jYQRbZtH3bD8yC7106u+CedTCLF8+t7CLHSZNo=
+github.com/gofrs/uuid/v5 v5.5.0/go.mod h1:bbAA98EoIlxyRHIVg6ektCSsZ5n8mSbwgEhvhMYlZgg=
 github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q=
 github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69NZV8Q=
 github.com/golang-migrate/migrate/v4 v4.19.1 h1:OCyb44lFuQfYXYLx1SCxPZQGU7mcaZ7gH9yH4jSFbBA=
 github.com/golang-migrate/migrate/v4 v4.19.1/go.mod h1:CTcgfjxhaUtsLipnLoQRWCrjYXycRz/g5+RWDuYgPrE=
 github.com/golang/protobuf v1.5.4 h1:i7eJL8qZTpSEXOPTxNKhASYpMn+8e5Q6AdndVa1dWek=
 github.com/golang/protobuf v1.5.4/go.mod h1:lnTiLA8Wa4RWRcIUkrtSVa5nRhsEGBg48fD6rSs7xps=
-github.com/google/cel-go v0.26.0 h1:DPGjXackMpJWH680oGY4lZhYjIameYmR+/6RBdDGmaI=
-github.com/google/cel-go v0.26.0/go.mod h1:A9O8OU9rdvrK5MQyrqfIxo1a0u4g3sF8KB6PUIaryMM=
+github.com/google/cel-go v0.29.0 h1:fEG+Ja3YRwNOqnQxTyJwoByAUAvTuxUGiro/jhrm4F4=
+github.com/google/cel-go v0.29.0/go.mod h1:X0bD6iVNR8pkROSOoHVdgTkzmRcosof7WQqCD6wcMc8=
 github.com/google/gnostic-models v0.7.1 h1:SisTfuFKJSKM5CPZkffwi6coztzzeYUhc3v4yxLWH8c=
 github.com/google/gnostic-models v0.7.1/go.mod h1:whL5G0m6dmc5cPxKc5bdKdEN3UjI7OUGxBlw57miDrQ=
 github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
@@ -135,8 +135,8 @@ github.com/hashicorp/golang-lru/v2 v2.0.7 h1:a+bsQ5rvGLjzHuww6tVxozPZFVghXaHOwFs
 github.com/hashicorp/golang-lru/v2 v2.0.7/go.mod h1:QeFd9opnmA6QUJc5vARoKUSoFhyfM2/ZepoAG6RGpeM=
 github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
 github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
-github.com/ironcore-dev/ironcore v0.4.3 h1:G3TmR4r3LtbmakMkxDa2pPlLCmxAfGVBEdy+QVyxl8Q=
-github.com/ironcore-dev/ironcore v0.4.3/go.mod h1:vFpdcyC4QD7o3j01lpux12NET6vNPDAq3hzrFOY9QOc=
+github.com/ironcore-dev/ironcore v0.5.0 h1:QAbXuqD8ZfS8wNP++EamrV7Xav3xfeZsC+28hddpkNE=
+github.com/ironcore-dev/ironcore v0.5.0/go.mod h1:HPW1+WJGharyrX30vOm43cGpeBXQDP43r66S4ADnhZ0=
 github.com/itchyny/gojq v0.12.19 h1:ttXA0XCLEMoaLOz5lSeFOZ6u6Q3QxmG46vfgI4O0DEs=
 github.com/itchyny/gojq v0.12.19/go.mod h1:5galtVPDywX8SPSOrqjGxkBeDhSxEW1gSxoy7tn1iZY=
 github.com/itchyny/timefmt-go v0.1.8 h1:1YEo1JvfXeAHKdjelbYr/uCuhkybaHCeTkH8Bo791OI=
@@ -153,8 +153,8 @@ github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0
 github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+fNqagV/RAw=
 github.com/lib/pq v1.12.3 h1:tTWxr2YLKwIvK90ZXEw8GP7UFHtcbTtty8zsI+YjrfQ=
 github.com/lib/pq v1.12.3/go.mod h1:/p+8NSbOcwzAEI7wiMXFlgydTwcgTr3OSKMsD2BitpA=
-github.com/mattn/go-sqlite3 v1.14.48 h1:7XHIgl0a8HwOaiK4E47ozLkST78rR9+OtNGx27D/TFs=
-github.com/mattn/go-sqlite3 v1.14.48/go.mod h1:6JTjA44L93a0QCyJef5YvlPoKXntQPjzWv5gtm9sB6w=
+github.com/mattn/go-sqlite3 v1.14.49 h1:B8jBHC3xhxZgxztrgruTuLucebnULQnx4W7cF7SAE9w=
+github.com/mattn/go-sqlite3 v1.14.49/go.mod h1:6JTjA44L93a0QCyJef5YvlPoKXntQPjzWv5gtm9sB6w=
 github.com/moby/docker-image-spec v1.3.1 h1:jMKff3w6PgbfSa69GfNg+zN/XLhfXJGnEx3Nl2EsFP0=
 github.com/moby/docker-image-spec v1.3.1/go.mod h1:eKmb5VW8vQEh/BAr2yvVNvuiJuY6UIocYsFu/DxxRpo=
 github.com/moby/sys/user v0.4.0 h1:jhcMKit7SA80hivmFJcbB1vqmw//wU61Zdui2eQXuMs=
@@ -204,27 +204,20 @@ github.com/rogpeppe/go-internal v1.14.1/go.mod h1:MaRKkUm5W0goXpeCfT7UZI6fk/L7L7
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/sapcc/go-api-declarations v1.24.0 h1:sGBvOMVSM1olJlyvNoQSk7NX5uatXHKkztGDBPnTWMs=
 github.com/sapcc/go-api-declarations v1.24.0/go.mod h1:ZWRTijvgF8o8aHg5stgg7u4DF6jFrd0X97le/uGlZsA=
-github.com/sapcc/go-bits v0.0.0-20260723170232-89c8670b5841 h1:xU7PCY7Vcc/0UZhvybOsE+bhh8/RmZlH9UaKIiKzNAY=
-github.com/sapcc/go-bits v0.0.0-20260723170232-89c8670b5841/go.mod h1:wUu2ss9a/5/bR4QOcaPIklrZdconXafkbsLgProV0Ro=
+github.com/sapcc/go-bits v0.0.0-20260730170321-f6f727520601 h1:pF4eF41dp0AxM0IfICn3ttpI5IwQoUmC0IkGuXLTmBA=
+github.com/sapcc/go-bits v0.0.0-20260730170321-f6f727520601/go.mod h1:4z4Vd1C7d6hDdbJ5q1CgzE9B8ESWuiMTbkZSJA5gSjA=
 github.com/sirupsen/logrus v1.9.3 h1:dueUQJ1C2q9oE3F7wvmSGAaVtTmUizReu6fjN8uqzbQ=
 github.com/sirupsen/logrus v1.9.3/go.mod h1:naHLuLoDiP4jHNo9R0sCBMtWGeIprob74mVsIT4qYEQ=
 github.com/spf13/cobra v1.10.2 h1:DMTTonx5m65Ic0GOoRY2c16WCbHxOOw6xxezuLaBpcU=
 github.com/spf13/cobra v1.10.2/go.mod h1:7C1pvHqHw5A4vrJfjNwvOdzYu0Gml16OCs2GRiTUUS4=
 github.com/spf13/pflag v1.0.9/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 github.com/spf13/pflag v1.0.10 h1:4EBh2KAYBwaONj6b2Ye1GiHfwjqyROoF4RwYO+vPwFk=
 github.com/spf13/pflag v1.0.10/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
-github.com/stoewer/go-strcase v1.3.1 h1:iS0MdW+kVTxgMoE1LAZyMiYJFKlOzLooE4MxjirtkAs=
-github.com/stoewer/go-strcase v1.3.1/go.mod h1:fAH5hQ5pehh+j3nZfvwdk2RgEgQjAoM8wodgtPmh1xo=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
-github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
 github.com/stretchr/objx v0.5.2 h1:xuMeJ0Sdp5ZMRXx/aWO6RZxdr3beISkG5/G/aIRr3pY=
 github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
-github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
 github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
 github.com/x448/float16 v0.8.4 h1:qLwI1I70+NjRFUR3zs1JPUCgaCXSh3SW62uAKT1mSBM=

@@ -669,4 +669,26 @@ spec:
           The committed resource quota API (Limes LIQUID integration) is returning
           HTTP 5xx errors. This indicates internal problems computing or applying
           quota. Limes may not be able to enforce committed resource quotas.
+
+    - alert: CortexNovaMulticlusterNameConflicts
+      expr: |
+        sum by (method, gvk) (increase(cortex_multicluster_cross_cluster_name_conflicts_total{service="cortex-nova-metrics"}[10m])) > 0
+      for: 5m
+      labels:
+        context: multicluster
+        dashboard: cortex-status-dashboard/cortex-status-dashboard
+        service: cortex
+        severity: warning
+        support_group: workload-management
+      annotations:
+        summary: "Cross-cluster name conflicts detected for `{{ "{{" }} $labels.gvk {{ "}}" }}`"
+        description: >
+          The multicluster client detected the same resource name for
+          `{{ "{{" }} $labels.gvk {{ "}}" }}` on more than one cluster during
+          `{{ "{{" }} $labels.method {{ "}}" }}` operations. This means reads fan
+          out to duplicates (surfaced as duplicate errors) and creates may be
+          rejected to avoid introducing new collisions. This usually indicates a
+          resource router is mapping the same object to multiple clusters, or an
+          object was created out-of-band on the wrong cluster. Investigate the
+          affected resources and the routing configuration.
 {{- end }}
@@ -188,4 +188,27 @@ spec:
           against a limit of 500m. Under normal operation the shim should use
           much less since it primarily proxies requests. This may indicate a
           hot loop, excessive logging, or an unusual traffic spike.
+
+    # Multicluster
+    - alert: CortexPlacementShimMulticlusterNameConflicts
+      expr: |
+        sum by (method, gvk) (increase(cortex_multicluster_cross_cluster_name_conflicts_total{service="cortex-placement-shim-metrics-service"}[10m])) > 0
+      for: 5m
+      labels:
+        context: multicluster
+        dashboard: cortex-placement-shim-status-dashboard/cortex-placement-shim-status-dashboard
+        service: cortex
+        severity: warning
+        support_group: workload-management
+      annotations:
+        summary: "Cross-cluster name conflicts detected for `{{ "{{" }} $labels.gvk {{ "}}" }}`"
+        description: >
+          The multicluster client detected the same resource name for
+          `{{ "{{" }} $labels.gvk {{ "}}" }}` on more than one cluster during
+          `{{ "{{" }} $labels.method {{ "}}" }}` operations. This means reads fan
+          out to duplicates (surfaced as duplicate errors) and creates may be
+          rejected to avoid introducing new collisions. This usually indicates a
+          resource router is mapping the same object to multiple clusters, or an
+          object was created out-of-band on the wrong cluster. Investigate the
+          affected resources and the routing configuration.
 {{- end }}
@@ -10,4 +10,4 @@ dependencies:
   # CRDs of the prometheus operator, such as PrometheusRule, ServiceMonitor, etc.
   - name: kube-prometheus-stack
     repository: oci://ghcr.io/prometheus-community/charts
-    version: 87.19.2
+    version: 87.21.0
@@ -157,7 +157,7 @@ func (httpAPI *httpAPI) CinderExternalScheduler(w http.ResponseWriter, r *http.R
 	}
 	ctx := r.Context()
 	if err := httpAPI.delegate.ProcessNewDecisionFromAPI(ctx, decision); err != nil {
-		c.Respond(logger, http.StatusInternalServerError, err, "failed to process scheduling decision")
+		c.Respond(logger, http.StatusInternalServerError, err, fmt.Sprintf("failed to process scheduling decision: %v", err))
 		return
 	}
 	// Check if the decision contains status conditions indicating an error.

@@ -7,6 +7,7 @@ import (
 	"context"
 	"encoding/json"
 	"errors"
+	"fmt"
 	"sync"
 	"time"
 
@@ -99,7 +100,7 @@ func (c *FilterWeigherPipelineController) process(ctx context.Context, decision
 	pipeline, ok := c.GetPipeline(decision.Spec.PipelineRef.Name)
 	if !ok {
 		log.Error(nil, "pipeline not found or not ready", "pipelineName", decision.Spec.PipelineRef.Name)
-		return errors.New("pipeline not found or not ready")
+		return fmt.Errorf("pipeline not found or not ready: %q", decision.Spec.PipelineRef.Name)
 	}
 	if decision.Spec.CinderRaw == nil {
 		log.Error(nil, "skipping decision, no cinderRaw spec defined")

@@ -6,6 +6,7 @@ package machines
 import (
 	"context"
 	"errors"
+	"fmt"
 	"sync"
 	"time"
 
@@ -120,7 +121,7 @@ func (c *FilterWeigherPipelineController) process(ctx context.Context, decision
 	pipeline, ok := c.GetPipeline(decision.Spec.PipelineRef.Name)
 	if !ok {
 		log.Error(nil, "pipeline not found or not ready", "pipelineName", decision.Spec.PipelineRef.Name)
-		return errors.New("pipeline not found or not ready")
+		return fmt.Errorf("pipeline not found or not ready: %q", decision.Spec.PipelineRef.Name)
 	}
 
 	// Find all available machine pools.

@@ -157,7 +157,7 @@ func (httpAPI *httpAPI) ManilaExternalScheduler(w http.ResponseWriter, r *http.R
 	}
 	ctx := r.Context()
 	if err := httpAPI.delegate.ProcessNewDecisionFromAPI(ctx, decision); err != nil {
-		c.Respond(logger, http.StatusInternalServerError, err, "failed to process scheduling decision")
+		c.Respond(logger, http.StatusInternalServerError, err, fmt.Sprintf("failed to process scheduling decision: %v", err))
 		return
 	}
 	// Check if the decision contains status conditions indicating an error.

@@ -7,6 +7,7 @@ import (
 	"context"
 	"encoding/json"
 	"errors"
+	"fmt"
 	"sync"
 	"time"
 
@@ -98,8 +99,8 @@ func (c *FilterWeigherPipelineController) process(ctx context.Context, decision
 
 	pipeline, ok := c.GetPipeline(decision.Spec.PipelineRef.Name)
 	if !ok {
-		log.Error(nil, "skipping decision, pipeline not found or not ready")
-		return errors.New("pipeline not found or not ready")
+		log.Error(nil, "skipping decision, pipeline not found or not ready", "pipelineName", decision.Spec.PipelineRef.Name)
+		return fmt.Errorf("pipeline not found or not ready: %q", decision.Spec.PipelineRef.Name)
 	}
 	if decision.Spec.ManilaRaw == nil {
 		log.Error(nil, "skipping decision, no manilaRaw spec defined")

@@ -245,7 +245,7 @@ func (httpAPI *httpAPI) NovaExternalScheduler(w http.ResponseWriter, r *http.Req
 	}
 	ctx := r.Context()
 	if err := httpAPI.delegate.ProcessNewDecisionFromAPI(ctx, decision); err != nil {
-		c.Respond(logger, http.StatusInternalServerError, err, "failed to process scheduling decision")
+		c.Respond(logger, http.StatusInternalServerError, err, fmt.Sprintf("failed to process scheduling decision: %v", err))
 		return
 	}
 	// Check if the decision contains status conditions indicating an error.

@@ -7,6 +7,7 @@ import (
 	"context"
 	"encoding/json"
 	"errors"
+	"fmt"
 	"sync"
 	"time"
 
@@ -163,7 +164,7 @@ func (c *FilterWeigherPipelineController) process(ctx context.Context, decision
 	pipeline, ok := c.GetPipeline(decision.Spec.PipelineRef.Name)
 	if !ok {
 		log.Error(nil, "pipeline not found or not ready", "pipelineName", decision.Spec.PipelineRef.Name)
-		return nil, errors.New("pipeline not found or not ready")
+		return nil, fmt.Errorf("pipeline not found or not ready: %q", decision.Spec.PipelineRef.Name)
 	}
 	if decision.Spec.NovaRaw == nil {
 		log.Error(nil, "skipping decision, no novaRaw spec defined")
@@ -187,7 +188,7 @@ func (c *FilterWeigherPipelineController) process(ctx context.Context, decision
 	pipelineConf, ok := c.GetPipelineConfig(decision.Spec.PipelineRef.Name)
 	if !ok {
 		log.Error(nil, "pipeline config not found", "pipelineName", decision.Spec.PipelineRef.Name)
-		return &request, errors.New("pipeline config not found")
+		return &request, fmt.Errorf("pipeline config not found: %q", decision.Spec.PipelineRef.Name)
 	}
 	if pipelineConf.Spec.IgnorePreselection {
 		log.Info("gathering all placement candidates before filtering")