fix(acceptance): 纳入 API 数据库池容量门禁

高并发 Gemini 验收暴露两地 API 数据库池仍固定为 16，导致连接池满载、readiness 失败且压力曲线只监测 Worker，无法及时识别真实瓶颈。\n\n将容量档位的数据库连接池同步应用到 API，发布工具和生产清单保持同一配置；压力采样及日志门禁覆盖 API 与 Worker 四个连接池，并在失败时保留验收 JSON 报告。\n\n验证：bash -n、ShellCheck、kubectl kustomize、git diff --check。

deploy/kubernetes/easyai-ai-gateway-cluster-release

@@ -145,7 +145,8 @@ rollout_worker_site() {
 rollout_api_capacity_site() {
   local site=$1
   "${kubectl[@]}" set env "deployment/easyai-api-$site" -n "$NAMESPACE" \
-    "AI_GATEWAY_ASYNC_WORKER_HARD_LIMIT=$AI_GATEWAY_ASYNC_WORKER_HARD_LIMIT"
+    "AI_GATEWAY_ASYNC_WORKER_HARD_LIMIT=$AI_GATEWAY_ASYNC_WORKER_HARD_LIMIT" \
+    "AI_GATEWAY_DATABASE_MAX_CONNS=$AI_GATEWAY_DATABASE_MAX_CONNS"
   "${kubectl[@]}" rollout status "deployment/easyai-api-$site" -n "$NAMESPACE" --timeout=300s
 }
 
@@ -168,7 +169,8 @@ rollout_site() {
   local web_changed=$5
   if [[ $api_changed == true ]]; then
     "${kubectl[@]}" set env "deployment/easyai-api-$site" -n "$NAMESPACE" \
-      "AI_GATEWAY_ASYNC_WORKER_HARD_LIMIT=$AI_GATEWAY_ASYNC_WORKER_HARD_LIMIT"
+      "AI_GATEWAY_ASYNC_WORKER_HARD_LIMIT=$AI_GATEWAY_ASYNC_WORKER_HARD_LIMIT" \
+      "AI_GATEWAY_DATABASE_MAX_CONNS=$AI_GATEWAY_DATABASE_MAX_CONNS"
     "${kubectl[@]}" set image "deployment/easyai-api-$site" -n "$NAMESPACE" \
       "api=$api_image"
     "${kubectl[@]}" rollout status "deployment/easyai-api-$site" -n "$NAMESPACE" --timeout=300s

deploy/kubernetes/production/application.yaml

@@ -53,7 +53,7 @@ spec:
             - name: AI_GATEWAY_ASYNC_QUEUE_WORKER_ENABLED
               value: "false"
             - name: AI_GATEWAY_DATABASE_MAX_CONNS
-              value: "16"
+              value: "32"
             - name: AI_GATEWAY_MEDIA_REQUEST_CONCURRENCY
               value: "16"
             - name: AI_GATEWAY_MEDIA_MATERIALIZATION_CONCURRENCY
@@ -182,7 +182,7 @@ spec:
             - name: AI_GATEWAY_ASYNC_QUEUE_WORKER_ENABLED
               value: "false"
             - name: AI_GATEWAY_DATABASE_MAX_CONNS
-              value: "16"
+              value: "32"
             - name: AI_GATEWAY_MEDIA_REQUEST_CONCURRENCY
               value: "16"
             - name: AI_GATEWAY_MEDIA_MATERIALIZATION_CONCURRENCY

scripts/cluster/run-production-acceptance.sh

@@ -663,7 +663,8 @@ apply_capacity_profile() {
     remote_kubectl rollout status "deployment/easyai-worker-$site" \
       -n "$namespace" --timeout=300s
     remote_kubectl set env "deployment/easyai-api-$site" -n "$namespace" \
-      "AI_GATEWAY_ASYNC_WORKER_HARD_LIMIT=$global" >/dev/null
+      "AI_GATEWAY_ASYNC_WORKER_HARD_LIMIT=$global" \
+      "AI_GATEWAY_DATABASE_MAX_CONNS=$pool" >/dev/null
     remote_kubectl rollout status "deployment/easyai-api-$site" \
       -n "$namespace" --timeout=300s
   done
@@ -709,7 +710,14 @@ export AI_GATEWAY_ACCEPTANCE_RUN_TOKEN=$(decode "$run_token_b64")
 export AI_GATEWAY_ACCEPTANCE_GEMINI_MODEL=$(decode "$gemini_model_b64")
 export AI_GATEWAY_ACCEPTANCE_VIDEO_MODEL=$(decode "$video_model_b64")
 export AI_GATEWAY_ACCEPTANCE_REAL_IMAGE_URLS=$(decode "$image_urls_b64")
-exec /app/easyai-ai-gateway-acceptance-load -profile "$1"
+report_file=$(mktemp)
+trap '\''rm -f -- "$report_file"'\'' EXIT
+set +e
+/app/easyai-ai-gateway-acceptance-load -profile "$1" >"$report_file"
+status=$?
+set -e
+cat "$report_file"
+exit "$status"
 '
   {
     printf '%s' "$AI_GATEWAY_ACCEPTANCE_GATEWAYS" | openssl base64 -A
@@ -805,23 +813,25 @@ verify_cluster_links() {
 }
 
 verify_control_plane_and_recent_logs() {
-  local host ready_output pod error_count
+  local host ready_output workload pod error_count
   for host in "$CLUSTER_NINGBO_HOST" "$CLUSTER_HONGKONG_HOST" "$CLUSTER_LOS_ANGELES_HOST"; do
     ready_output=$(cluster_ssh "$host" "k3s kubectl get --raw='/readyz?verbose'")
     grep -Fq '[+]etcd ok' <<<"$ready_output"
   done
-  while read -r pod; do
+  for workload in api worker; do
-    error_count=$(remote_kubectl logs "$pod" -n "$namespace" --since=10m |
+    while read -r pod; do
-      awk 'BEGIN {IGNORECASE=1}
+      error_count=$(remote_kubectl logs "$pod" -n "$namespace" --since=10m |
-        /postgres_unavailable/ ||
+        awk 'BEGIN {IGNORECASE=1}
-        /postgres readiness.*(fail|unavailable|error)/ ||
+          /postgres_unavailable/ ||
-        /leadership elector.*(error|fail)/ ||
+          /postgres readiness.*(fail|unavailable|error)/ ||
-        /concurrency lease.*(renew.*(error|fail)|lost)/ {count++}
+          /leadership elector.*(error|fail)/ ||
-        END {print count+0}')
+          /concurrency lease.*(renew.*(error|fail)|lost)/ {count++}
-    [[ $error_count == 0 ]]
+          END {print count+0}')
-  done < <(remote_kubectl get pods -n "$namespace" \
+      [[ $error_count == 0 ]]
-    -l 'app.kubernetes.io/name=easyai-worker' \
+    done < <(remote_kubectl get pods -n "$namespace" \
-    -o jsonpath='{range .items[*]}{.metadata.name}{"\n"}{end}')
+      -l "app.kubernetes.io/name=easyai-$workload" \
+      -o jsonpath='{range .items[*]}{.metadata.name}{"\n"}{end}')
+  done
   while read -r pod; do
     error_count=$(remote_kubectl logs "$pod" -n "$namespace" -c postgres --since=10m |
       awk 'BEGIN {IGNORECASE=1}
@@ -1017,6 +1027,21 @@ WHERE status='active'
 
   local pod metrics desired current global allocated active_instances pool_max acquired idle
   local canceled_acquires lease_failures lease_lost
+  for site in ningbo hongkong; do
+    pod=$(remote_kubectl get pods -n "$namespace" \
+      -l "app.kubernetes.io/name=easyai-api,easyai.io/site=$site" \
+      -o 'jsonpath={.items[0].metadata.name}')
+    metrics=$(remote_kubectl exec -n "$namespace" "$pod" -- \
+      wget -qO- http://127.0.0.1:8088/metrics)
+    pool_max=$(awk '$1=="easyai_gateway_postgres_pool_max_connections" {print $2}' <<<"$metrics")
+    acquired=$(awk '$1=="easyai_gateway_postgres_pool_acquired_connections" {print $2}' <<<"$metrics")
+    idle=$(awk '$1=="easyai_gateway_postgres_pool_idle_connections" {print $2}' <<<"$metrics")
+    [[ ${pool_max%.*} == "$expected_pool" ]]
+    if [[ ${acquired%.*} == "$expected_pool" && ${idle%.*} == 0 ]]; then
+      echo "API connection pool saturated for site $site" >&2
+      return 1
+    fi
+  done
   for _ in 1 2 3 4 5 6; do
     for site in ningbo hongkong; do
       pod=$(remote_kubectl get pods -n "$namespace" \
@@ -1070,27 +1095,37 @@ WHERE acceptance_run_id='$run_id'::uuid;") || break
       awk '{value=$5; sub(/%$/, "", value); if (value>max) max=value} END {print max+0}') || break
     pod_memory_mib=$(current_max_pod_memory_mib) || break
     pool_state=$(
-      for site in ningbo hongkong; do
+      for workload in api worker; do
-        pod=$(remote_kubectl get pods -n "$namespace" \
+        for site in ningbo hongkong; do
-          -l "app.kubernetes.io/name=easyai-worker,easyai.io/site=$site" -o json |
+          pod=$(remote_kubectl get pods -n "$namespace" \
-          jq -r '[.items[]
+            -l "app.kubernetes.io/name=easyai-$workload,easyai.io/site=$site" -o json |
-            | select(any(.status.conditions[]?; .type=="Ready" and .status=="True"))
+            jq -r '[.items[]
-            | .metadata.name][0] // empty') || exit
+              | select(any(.status.conditions[]?; .type=="Ready" and .status=="True"))
-        [[ -n $pod ]] || continue
+              | .metadata.name][0] // empty') || exit
-        metrics=$(remote_kubectl exec -n "$namespace" "$pod" -- \
+          [[ -n $pod ]] || continue
-          wget -qO- http://127.0.0.1:8088/metrics) || exit
+          metrics=$(remote_kubectl exec -n "$namespace" "$pod" -- \
-        awk '
+            wget -qO- http://127.0.0.1:8088/metrics) || exit
-          $1=="easyai_gateway_postgres_pool_acquired_connections" {acquired=$2}
+          awk -v workload="$workload" '
-          $1=="easyai_gateway_postgres_pool_max_connections" {pool_max=$2}
+            $1=="easyai_gateway_postgres_pool_acquired_connections" {acquired=$2}
-          $1=="easyai_gateway_postgres_pool_idle_connections" {idle=$2}
+            $1=="easyai_gateway_postgres_pool_max_connections" {pool_max=$2}
-          $1=="easyai_gateway_postgres_pool_empty_acquire_total" {empty=$2}
+            $1=="easyai_gateway_postgres_pool_idle_connections" {idle=$2}
-          $1=="easyai_gateway_postgres_pool_canceled_acquire_total" {canceled=$2}
+            $1=="easyai_gateway_postgres_pool_empty_acquire_total" {empty=$2}
-          index($1,"easyai_gateway_concurrency_lease_renewals_total{outcome=\"failure\"}")==1 {failure=$2}
+            $1=="easyai_gateway_postgres_pool_canceled_acquire_total" {canceled=$2}
-          index($1,"easyai_gateway_concurrency_lease_renewals_total{outcome=\"lost\"}")==1 {lost=$2}
+            index($1,"easyai_gateway_concurrency_lease_renewals_total{outcome=\"failure\"}")==1 {failure=$2}
-          $1=="easyai_gateway_worker_active_instances" {active=$2}
+            index($1,"easyai_gateway_concurrency_lease_renewals_total{outcome=\"lost\"}")==1 {lost=$2}
-          $1=="easyai_gateway_worker_allocated_capacity" {allocated=$2}
+            $1=="easyai_gateway_worker_active_instances" {active=$2}
-          END {print acquired "," pool_max "," idle "," empty "," canceled "," failure "," lost "," active "," allocated}
+            $1=="easyai_gateway_worker_allocated_capacity" {allocated=$2}
-        ' <<<"$metrics"
+            END {
+              if (workload=="api") {
+                failure=0
+                lost=0
+                active=999999
+                allocated=0
+              }
+              print acquired "," pool_max "," idle "," empty "," canceled "," failure "," lost "," active "," allocated
+            }
+          ' <<<"$metrics"
+        done
       done |
         awk -F',' '
           NR==1 {