diff --git a/.gitignore b/.gitignore
index 1e6aea4..4912f57 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,8 @@
 central-server/data/
 central-server/.env
+central-server/config/vmauth/vmauth.yml
+central-server/config/vmauth/tenants.csv
+central-server/config/grafana/provisioning/datasources/victoriametrics.yml
 
 edge-agent/.env
 
diff --git a/README.md b/README.md
index b925e32..d32d376 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,9 @@
 中央 Prometheus 抓取本地 + 查 VictoriaMetrics → 告警 + Grafana
 ```
 
-边缘将指标推送到中央 VictoriaMetrics（8428）；Grafana 查询边缘数据选 **VictoriaMetrics**，中央自抓选 **Prometheus**。
+边缘将指标推送到中央 vmauth（18428，带鉴权）再转发到 VictoriaMetrics；如果启用严格多租户（`central-server/config/vmauth/tenants.csv`），每个边缘节点用独立账号并写入各自 tenant，实现数据与查询隔离。
+
+管理员要看所有租户：在 `central-server/.env` 配置 `VMAUTH_ADMIN_USER/VMAUTH_ADMIN_PASSWORD`。该账号可跨租户读取（通过 `/select/<tenant_id>/prometheus/...`），Grafana 建议用“数据源变量”在多租户数据源之间切换查看。
 
 ---
 
@@ -59,7 +61,7 @@ bash deploy.sh
 |------|------|-----|
 | Grafana | 3000 | http://localhost:3000 |
 | Prometheus | 9091 | http://localhost:9091 |
-| VictoriaMetrics | 8428 | http://localhost:8428 |
+| vmauth（VictoriaMetrics 入口） | 18428 | http://localhost:18428 |
 | Alertmanager | 9093 | http://localhost:9093 |
 | GPS 标注助手 | 4080 | http://localhost:4080 |
 | 边缘 vmagent | 9092 | http://localhost:9092 |
diff --git a/central-server/CONFIGURATION.md b/central-server/CONFIGURATION.md
index 29aa6bb..742ce7a 100644
--- a/central-server/CONFIGURATION.md
+++ b/central-server/CONFIGURATION.md
@@ -46,7 +46,7 @@
 | `PROMETHEUS_PORT` | 9091 | Prometheus Web UI 端口（避免与 cockpit 冲突） |
 | `GRAFANA_PORT` | 3000 | Grafana Web UI 端口 |
 | `ALERTMANAGER_PORT` | 9093 | Alertmanager Web UI 端口 |
-| `VICTORIAMETRICS_PORT` | 8428 | VictoriaMetrics 端口（边缘节点推送数据到此端口） |
+| `VICTORIAMETRICS_PORT` | 18428 | vmauth 对外端口（边缘节点推送数据/查询都走此端口） |
 
 **注意**：
 - 如果端口被占用，修改 `.env` 文件中对应的端口号
diff --git a/central-server/config/grafana/provisioning/datasources/victoriametrics.yml b/central-server/config/grafana/provisioning/datasources/victoriametrics.yml
index 5c4cf5e..0c51cc5 100644
--- a/central-server/config/grafana/provisioning/datasources/victoriametrics.yml
+++ b/central-server/config/grafana/provisioning/datasources/victoriametrics.yml
@@ -1,16 +1,20 @@
 # VictoriaMetrics 数据源（边缘节点上报的数据存储在此）
 # 边缘节点通过 remote_write 推送到中央 VictoriaMetrics，本数据源用于在 Grafana 中查询这些数据
-# 使用前需在边缘节点配置：remote_write 指向中央服务器 VictoriaMetrics 地址（如 http://中央IP:8428/api/v1/write）
+# 使用前需在边缘节点配置：remote_write 指向中央服务器 VictoriaMetrics 地址（如 http://中央IP:18428/api/v1/write）
 apiVersion: 1
 
 datasources:
   - name: VictoriaMetrics
     type: prometheus
     access: proxy
-    url: http://victoria-metrics:8428
+    url: http://vmauth:8427
     isDefault: false
     editable: true
+    basicAuth: true
+    basicAuthUser: ${VMAUTH_READ_USER}
     jsonData:
       httpMethod: POST
       queryTimeout: 60s
       timeInterval: 15s
+    secureJsonData:
+      basicAuthPassword: ${VMAUTH_READ_PASSWORD}
diff --git a/central-server/config/grafana/provisioning/datasources/victoriametrics.yml.template b/central-server/config/grafana/provisioning/datasources/victoriametrics.yml.template
new file mode 100644
index 0000000..cf52ecf
--- /dev/null
+++ b/central-server/config/grafana/provisioning/datasources/victoriametrics.yml.template
@@ -0,0 +1,18 @@
+# VictoriaMetrics 数据源（通过 vmauth 进行鉴权访问）
+apiVersion: 1
+
+datasources:
+  - name: VictoriaMetrics
+    type: prometheus
+    access: proxy
+    url: http://vmauth:8427
+    isDefault: false
+    editable: true
+    basicAuth: true
+    basicAuthUser: "${VMAUTH_READ_USER}"
+    jsonData:
+      httpMethod: POST
+      queryTimeout: 60s
+      timeInterval: 15s
+    secureJsonData:
+      basicAuthPassword: "${VMAUTH_READ_PASSWORD}"
diff --git a/central-server/config/prometheus/prometheus.yml b/central-server/config/prometheus/prometheus.yml
index 10e54d5..ed89313 100644
--- a/central-server/config/prometheus/prometheus.yml
+++ b/central-server/config/prometheus/prometheus.yml
@@ -21,7 +21,10 @@ global:
 # 远程写入：将中央 Prometheus 抓取到的本地服务指标推送到 VictoriaMetrics
 # （边缘节点由 vmagent 直接 remote_write 到 VictoriaMetrics）
 remote_write:
-  - url: http://victoria-metrics:8428/api/v1/write
+  - url: http://vmauth:8427/api/v1/write
+    basic_auth:
+      username: ${VMAUTH_WRITE_USER}
+      password: ${VMAUTH_WRITE_PASSWORD}
     queue_config:
       max_samples_per_send: 10000
       capacity: 20000
diff --git a/central-server/config/prometheus/prometheus.yml.template b/central-server/config/prometheus/prometheus.yml.template
index 4873590..d99c40f 100644
--- a/central-server/config/prometheus/prometheus.yml.template
+++ b/central-server/config/prometheus/prometheus.yml.template
@@ -21,7 +21,10 @@ global:
 # 远程写入：将中央 Prometheus 抓取到的本地服务指标推送到 VictoriaMetrics
 # （边缘节点由 vmagent 直接 remote_write 到 VictoriaMetrics）
 remote_write:
-  - url: http://victoria-metrics:${VICTORIAMETRICS_PORT}/api/v1/write
+  - url: http://vmauth:8427/api/v1/write
+    basic_auth:
+      username: ${VMAUTH_WRITE_USER}
+      password: ${VMAUTH_WRITE_PASSWORD}
     queue_config:
       max_samples_per_send: ${PROMETHEUS_REMOTE_WRITE_MAX_SAMPLES}
       capacity: ${PROMETHEUS_REMOTE_WRITE_CAPACITY}
@@ -40,7 +43,7 @@ scrape_configs:
     scrape_interval: ${PROMETHEUS_SCRAPE_INTERVAL}s
     metrics_path: '/metrics'
     static_configs:
-      - targets: ['victoria-metrics:${VICTORIAMETRICS_PORT}']
+      - targets: ['victoria-metrics:8428']
 
   # 抓取Alertmanager
   - job_name: 'alertmanager'
diff --git a/central-server/config/vmauth/tenants.csv.example b/central-server/config/vmauth/tenants.csv.example
new file mode 100644
index 0000000..559c9bb
--- /dev/null
+++ b/central-server/config/vmauth/tenants.csv.example
@@ -0,0 +1,3 @@
+tenant_id,edge_node_id,write_user,write_password,read_user,read_password
+1001,edge_a,edge_a_write,CHANGE_ME,edge_a_read,CHANGE_ME
+1002,edge_b,edge_b_write,CHANGE_ME,edge_b_read,CHANGE_ME
diff --git a/central-server/config/vmauth/vmauth.yml.template b/central-server/config/vmauth/vmauth.yml.template
new file mode 100644
index 0000000..203c487
--- /dev/null
+++ b/central-server/config/vmauth/vmauth.yml.template
@@ -0,0 +1,6 @@
+unauthorized_user:
+  # 未认证请求默认拒绝
+  url_map: []
+
+# 注意：本文件将由 deploy.sh 根据 config/vmauth/tenants.csv 自动生成。
+users: []
diff --git a/central-server/deploy.sh b/central-server/deploy.sh
index 2414363..32bfbc1 100644
--- a/central-server/deploy.sh
+++ b/central-server/deploy.sh
@@ -30,7 +30,7 @@ fi
 PROMETHEUS_PORT=${PROMETHEUS_PORT:-9091}
 GRAFANA_PORT=${GRAFANA_PORT:-3000}
 ALERTMANAGER_PORT=${ALERTMANAGER_PORT:-9093}
-VICTORIAMETRICS_PORT=${VICTORIAMETRICS_PORT:-8428}
+VICTORIAMETRICS_PORT=${VICTORIAMETRICS_PORT:-18428}
 PROMETHEUS_DATA_DIR=${PROMETHEUS_DATA_DIR:-./data/prometheus-data}
 GRAFANA_DATA_DIR=${GRAFANA_DATA_DIR:-./data/grafana-data}
 VICTORIAMETRICS_DATA_DIR=${VICTORIAMETRICS_DATA_DIR:-./data/victoria-metrics-data}
@@ -46,6 +46,12 @@ PROMETHEUS_REMOTE_WRITE_MAX_SHARDS=${PROMETHEUS_REMOTE_WRITE_MAX_SHARDS:-10}
 GRAFANA_DEFAULT_LANGUAGE=${GRAFANA_DEFAULT_LANGUAGE:-zh-Hans}
 GRAFANA_DEFAULT_THEME=${GRAFANA_DEFAULT_THEME:-light}
 TRAEFIK_PROVIDER=${TRAEFIK_PROVIDER:-external}
+VMAUTH_WRITE_USER=${VMAUTH_WRITE_USER:-vm_write}
+VMAUTH_WRITE_PASSWORD=${VMAUTH_WRITE_PASSWORD:-change-me-strong-write}
+VMAUTH_READ_USER=${VMAUTH_READ_USER:-vm_read}
+VMAUTH_READ_PASSWORD=${VMAUTH_READ_PASSWORD:-change-me-strong-read}
+VMAUTH_ADMIN_USER=${VMAUTH_ADMIN_USER:-vm_admin}
+VMAUTH_ADMIN_PASSWORD=${VMAUTH_ADMIN_PASSWORD:-change-me-strong-admin}
 
 # 根据 TRAEFIK_ENABLED 与 TRAEFIK_PROVIDER 设置网络
 if [ "${TRAEFIK_ENABLED:-false}" = "true" ]; then
@@ -194,6 +200,147 @@ elif [ ! -f "config/prometheus/prometheus.yml" ]; then
     exit 1
 fi
 
+generate_vmauth_and_grafana_datasources() {
+    mkdir -p config/vmauth config/grafana/provisioning/datasources
+
+    local tenants_file="config/vmauth/tenants.csv"
+    local vmauth_out="config/vmauth/vmauth.yml"
+    local grafana_out="config/grafana/provisioning/datasources/victoriametrics.yml"
+
+    echo "📝 生成 vmauth 配置与 Grafana 数据源..."
+
+    # vmauth header
+    cat > "$vmauth_out" <<'EOF'
+unauthorized_user:
+  url_map: []
+
+users:
+EOF
+
+    # grafana header
+    cat > "$grafana_out" <<'EOF'
+apiVersion: 1
+
+datasources:
+EOF
+
+    if [ -f "$tenants_file" ]; then
+        # CSV: tenant_id,edge_node_id,write_user,write_password,read_user,read_password
+        # Skip header line
+        tail -n +2 "$tenants_file" | while IFS=',' read -r tenant_id edge_node_id wuser wpass ruser rpass; do
+            # Skip empty lines
+            [ -z "$tenant_id" ] && continue
+
+            # vmauth write user (route to per-tenant insert)
+            cat >> "$vmauth_out" <<EOF
+  - username: "$wuser"
+    password: "$wpass"
+    url_prefix: "http://victoria-metrics:8428/insert/${tenant_id}/prometheus"
+
+EOF
+
+            # vmauth read user (route to per-tenant select; allow only query-ish paths)
+            cat >> "$vmauth_out" <<EOF
+  - username: "$ruser"
+    password: "$rpass"
+    url_map:
+      - src_paths:
+          - "/api/v1/query"
+          - "/api/v1/query_range"
+          - "/api/v1/series"
+          - "/api/v1/labels"
+          - "/api/v1/label/.+/values"
+          - "/api/v1/export"
+          - "/federate"
+        url_prefix: "http://victoria-metrics:8428/select/${tenant_id}/prometheus"
+
+EOF
+
+            # grafana datasource per tenant
+            # name includes tenant_id + edge_node_id for readability
+            cat >> "$grafana_out" <<EOF
+  - name: "VictoriaMetrics (tenant ${tenant_id}${edge_node_id:+ - ${edge_node_id}})"
+    type: prometheus
+    access: proxy
+    url: http://vmauth:8427
+    isDefault: false
+    editable: true
+    basicAuth: true
+    basicAuthUser: "${ruser}"
+    jsonData:
+      httpMethod: POST
+      queryTimeout: 60s
+      timeInterval: 15s
+    secureJsonData:
+      basicAuthPassword: "${rpass}"
+
+EOF
+        done
+
+        echo "✅ 已根据 tenants.csv 生成 vmauth.yml 与 Grafana 多数据源"
+    else
+        # Fallback: single-tenant mode using .env variables
+        cat >> "$vmauth_out" <<EOF
+  - username: "${VMAUTH_WRITE_USER}"
+    password: "${VMAUTH_WRITE_PASSWORD}"
+    url_prefix: "http://victoria-metrics:8428"
+
+  - username: "${VMAUTH_READ_USER}"
+    password: "${VMAUTH_READ_PASSWORD}"
+    url_map:
+      - src_paths:
+          - "/api/v1/query"
+          - "/api/v1/query_range"
+          - "/api/v1/series"
+          - "/api/v1/labels"
+          - "/api/v1/label/.+/values"
+          - "/api/v1/export"
+          - "/federate"
+        url_prefix: "http://victoria-metrics:8428"
+EOF
+
+        cat >> "$grafana_out" <<EOF
+  - name: VictoriaMetrics
+    type: prometheus
+    access: proxy
+    url: http://vmauth:8427
+    isDefault: false
+    editable: true
+    basicAuth: true
+    basicAuthUser: "${VMAUTH_READ_USER}"
+    jsonData:
+      httpMethod: POST
+      queryTimeout: 60s
+      timeInterval: 15s
+    secureJsonData:
+      basicAuthPassword: "${VMAUTH_READ_PASSWORD}"
+EOF
+
+        echo "✅ 未找到 tenants.csv，已使用单租户 .env 变量生成 vmauth.yml 与 Grafana 数据源"
+    fi
+
+    # Append admin read-only user (can query any tenant via /select/<tenant>/prometheus/...)
+    cat >> "$vmauth_out" <<EOF
+
+  - username: "${VMAUTH_ADMIN_USER}"
+    password: "${VMAUTH_ADMIN_PASSWORD}"
+    url_map:
+      - src_paths:
+          - "^/select/[0-9]+/prometheus/api/v1/query$"
+          - "^/select/[0-9]+/prometheus/api/v1/query_range$"
+          - "^/select/[0-9]+/prometheus/api/v1/series$"
+          - "^/select/[0-9]+/prometheus/api/v1/labels$"
+          - "^/select/[0-9]+/prometheus/api/v1/label/.+/values$"
+          - "^/select/[0-9]+/prometheus/api/v1/export$"
+          - "^/select/[0-9]+/prometheus/federate$"
+        url_prefix: "http://victoria-metrics:8428"
+EOF
+
+    echo "✅ 已追加管理员只读账号（可跨租户查询）"
+}
+
+generate_vmauth_and_grafana_datasources
+
 # 检查配置文件
 if [ ! -f "config/prometheus/alert_rules.yml" ]; then
     echo "❌ 配置文件 config/prometheus/alert_rules.yml 不存在"
@@ -267,6 +414,7 @@ mkdir -p "${VICTORIAMETRICS_DATA_DIR}"
 mkdir -p config/grafana/dashboards
 mkdir -p config/grafana/provisioning/datasources
 mkdir -p config/grafana/provisioning/dashboards
+mkdir -p config/vmauth
 
 # 设置目录权限
 # Prometheus 需要写权限
diff --git a/central-server/docker-compose.yml b/central-server/docker-compose.yml
index e7a60fc..295daad 100644
--- a/central-server/docker-compose.yml
+++ b/central-server/docker-compose.yml
@@ -77,14 +77,25 @@ services:
     container_name: victoria-metrics
     restart: unless-stopped
     mem_limit: "64m"
-    ports:
-      - "${VICTORIAMETRICS_PORT:-8428}:8428"
     volumes:
       - ${VICTORIAMETRICS_DATA_DIR:-./data/victoria-metrics-data}:/victoria-metrics-data
     command:
       - '--storageDataPath=/victoria-metrics-data'
       - "--retentionPeriod=${VICTORIAMETRICS_RETENTION_PERIOD:-30d}"
-      - "--httpListenAddr=:${VICTORIAMETRICS_PORT:-8428}"
+
+  # vmauth：VictoriaMetrics 的鉴权/路由入口（对外只暴露 vmauth）
+  vmauth:
+    image: victoriametrics/vmauth:latest
+    container_name: vmauth
+    restart: unless-stopped
+    mem_limit: "64m"
+    ports:
+      - "${VICTORIAMETRICS_PORT:-18428}:8427"
+    volumes:
+      - ./config/vmauth/vmauth.yml:/etc/vmauth/vmauth.yml:ro
+    command:
+      - "-auth.config=/etc/vmauth/vmauth.yml"
+      - "-httpListenAddr=:8427"
 
   # GPS 标注助手（上传/下载 targets.csv，H5 采集 GPS + 天地图校验）
   topology-editor:
diff --git a/central-server/env.example b/central-server/env.example
index 4b4acb0..5940dcf 100644
--- a/central-server/env.example
+++ b/central-server/env.example
@@ -40,8 +40,8 @@ GRAFANA_PORT=3000
 ALERTMANAGER_PORT=9093
 
 # VictoriaMetrics 端口（边缘 vmagent 通过 remote_write 推送到此端口）
-# 必须与边缘侧 CENTRAL_VM_URL 中的端口一致；通常不通过 Traefik，边缘直连
-VICTORIAMETRICS_PORT=8428
+# 必须与边缘侧 CENTRAL_SERVER_PORT 一致；通常不通过 Traefik，边缘直连
+VICTORIAMETRICS_PORT=18428
 
 # ============================================
 # Grafana 配置
@@ -92,6 +92,33 @@ PROMETHEUS_REMOTE_WRITE_MAX_SHARDS=10
 # VM 数据保留时间（如 30d、90d）
 VICTORIAMETRICS_RETENTION_PERIOD=30d
 
+# ============================================
+# vmauth（鉴权 / 多租户入口）
+# ============================================
+# vmauth 作为 VictoriaMetrics 的统一入口：对外仅暴露 vmauth 端口；
+# - 写入账号：边缘 vmagent、中央 Prometheus remote_write
+# - 只读账号：Grafana 查询（建议只读）
+#
+# 生产环境必须修改为强口令，并避免跨环境复用。
+#
+# 【严格多租户（推荐）】
+# 在 central-server/config/vmauth/tenants.csv 中为每个边缘节点配置独立凭据与 tenant_id；
+# deploy.sh 会据此生成 vmauth.yml 与 Grafana 多数据源 provisioning。
+# 可参考示例：central-server/config/vmauth/tenants.csv.example
+#
+# 【单租户兼容模式（可选）】
+# 如果你不提供 tenants.csv，将使用下面这组单租户账号生成 vmauth 配置（不做按 tenant 隔离）。
+VMAUTH_WRITE_USER=vm_write
+VMAUTH_WRITE_PASSWORD=change-me-strong-write
+VMAUTH_READ_USER=vm_read
+VMAUTH_READ_PASSWORD=change-me-strong-read
+
+# 【管理员只读账号（可选）】
+# 允许访问所有租户的 /select/<tenant_id>/prometheus/... 查询接口（只读）。
+# 用途：管理员在同一套 Grafana 下查看所有租户（可在仪表盘用“数据源变量”切换租户）。
+VMAUTH_ADMIN_USER=vm_admin
+VMAUTH_ADMIN_PASSWORD=change-me-strong-admin
+
 # ============================================
 # 数据存储路径
 # ============================================
diff --git a/doc/ARCHITECTURE.md b/doc/ARCHITECTURE.md
index 2e03677..eb0ee1c 100644
--- a/doc/ARCHITECTURE.md
+++ b/doc/ARCHITECTURE.md
@@ -9,7 +9,7 @@
                    │ remote_write (HTTP POST)
                    ▼
 ┌─ 中央服务器 ───────────────────────────────────┐
-│  VictoriaMetrics (8428)  接收边缘推送、存储    │
+│  vmauth (18428) 鉴权入口；后端 VictoriaMetrics 存储 │
 │           │ 数据查询                           │
 │           ▼                                    │
 │  Prometheus (9091)  抓取本地、告警评估          │
@@ -38,7 +38,7 @@
             │
             │ remote_write (HTTP POST)
             ▼
-    VictoriaMetrics (8428)
+    vmauth (18428)  ->  VictoriaMetrics (container:8428)
             │
             │ 数据存储
             ▼
@@ -79,9 +79,9 @@ Alertmanager 处理告警
 
 ## 容器详细说明
 
-### 1. VictoriaMetrics (8428)
-- **作用**：远程写入接收器，存储时序数据
-- **接收**：边缘节点通过 `remote_write` 推送的数据
+### 1. vmauth (18428)
+- **作用**：鉴权/路由入口，给 remote_write 与查询接口加访问控制
+- **接收**：边缘节点通过 `remote_write` 推送的数据（带 basic auth）
 - **提供**：数据查询接口
 - **数据路径**：`/storage/victoria-metrics-data`
 
@@ -121,7 +121,8 @@ monitoring_net (Docker Bridge)
 ├─ prometheus-central:9090  -> 宿主机 9091
 ├─ grafana:3000             -> 宿主机 3000
 ├─ alertmanager:9093        -> 宿主机 9093
-└─ victoria-metrics:8428    -> 宿主机 8428
+├─ vmauth:8427              -> 宿主机 18428
+└─ victoria-metrics:8428     -> （不对外暴露，仅容器网络可达）
 ```
 
 ## 端口映射
@@ -131,7 +132,7 @@ monitoring_net (Docker Bridge)
 | Prometheus | 9090 | 9091 | PromQL 查询和 Web UI |
 | Grafana | 3000 | 3000 | 可视化仪表板 |
 | Alertmanager | 9093 | 9093 | 告警管理界面 |
-| VictoriaMetrics | 8428 | 8428 | 远程写入和查询接口 |
+| vmauth | 18428 | 8427 | 远程写入与查询入口（鉴权） |
 
 ## 数据存储
 
diff --git a/doc/BEST_PRACTICES.md b/doc/BEST_PRACTICES.md
index 98cd9d2..8f3c8f9 100644
--- a/doc/BEST_PRACTICES.md
+++ b/doc/BEST_PRACTICES.md
@@ -40,14 +40,14 @@
 # 开放端口
 firewall-cmd --permanent --add-port=3000/tcp   # Grafana
 firewall-cmd --permanent --add-port=9091/tcp   # Prometheus
-firewall-cmd --permanent --add-port=8428/tcp   # VictoriaMetrics
+firewall-cmd --permanent --add-port=18428/tcp  # VictoriaMetrics
 firewall-cmd --permanent --add-port=9093/tcp   # Alertmanager
 firewall-cmd --reload
 ```
 
 **边缘节点**：
 - 不需要开放端口（只做数据推送）
-- 确保可以访问中央服务器 8428 端口
+- 确保可以访问中央服务器 18428 端口
 
 #### 网络优化
 
diff --git a/doc/CENTRAL_SERVER_CONFIG.md b/doc/CENTRAL_SERVER_CONFIG.md
index 57eefd3..7bcbefb 100644
--- a/doc/CENTRAL_SERVER_CONFIG.md
+++ b/doc/CENTRAL_SERVER_CONFIG.md
@@ -22,7 +22,7 @@ central-server/
 |------|------|------|
 | prometheus-central | 9091 | 自抓 + 告警评估；边缘数据由 Grafana 从 VictoriaMetrics 查询 |
 | grafana | 3000 | 数据源：Prometheus（中央自抓）、VictoriaMetrics（边缘数据） |
-| victoria-metrics | 8428 | 接收边缘 remote_write |
+| vmauth | 18428 | 边缘 remote_write 与 Grafana 查询入口（鉴权） |
 | alertmanager | 9093 | 告警路由与通知 |
 
 ## 关键配置摘要
diff --git a/doc/DEPLOYMENT_GUIDE.md b/doc/DEPLOYMENT_GUIDE.md
index 77a258a..2d821f2 100644
--- a/doc/DEPLOYMENT_GUIDE.md
+++ b/doc/DEPLOYMENT_GUIDE.md
@@ -6,7 +6,7 @@
 
 ## 第一步：部署中央服务器
 
-**前置**：Docker、Docker Compose；端口 3000、9091、8428、9093 未被占用；磁盘充足。
+**前置**：Docker、Docker Compose；端口 3000、9091、18428、9093 未被占用；磁盘充足。
 
 ```bash
 cd central-server
@@ -14,7 +14,7 @@ cp env.example .env   # 可选，按需改端口、Traefik 等
 bash deploy.sh
 ```
 
-**验证**：Grafana http://localhost:3000（admin/admin123）、Prometheus http://localhost:9091、VictoriaMetrics http://localhost:8428。
+**验证**：Grafana http://localhost:3000（admin/admin123）、Prometheus http://localhost:9091、vmauth（VictoriaMetrics 入口）http://localhost:18428。
 
 **详细**：[CENTRAL_SERVER_CONFIG](CENTRAL_SERVER_CONFIG.md)、[central-server/CONFIGURATION.md](../central-server/CONFIGURATION.md)。
 
@@ -22,9 +22,9 @@ bash deploy.sh
 
 ## 第二步：部署边缘节点
 
-**前提**：中央已运行，VictoriaMetrics 8428 可访问。
+**前提**：中央已运行，vmauth（VictoriaMetrics 入口）18428 可访问。
 
-- **本机同机**：`cd edge-agent && bash deploy.sh --local`（中央地址设为 host.docker.internal:8428）。
+- **本机同机**：`cd edge-agent && bash deploy.sh --local`（中央地址设为 host.docker.internal:18428）。
 - **边缘跨机**：`cd edge-agent` → 编辑 `.env` 中 `CENTRAL_SERVER_HOST=中央IP` → `bash deploy.sh`。
 
 **验证**：边缘 http://localhost:9092；中央 Grafana 选数据源 **VictoriaMetrics**，查询 `probe_success{job="network-ping"}` 可见边缘数据。
@@ -32,7 +32,7 @@ bash deploy.sh
 **targets.csv**：部署时自动生成 target-*.json；修改 targets.csv 后需手动 `cd config && ./update-configs.sh`，vmagent 每 5 分钟自动重载。
 
 **常见问题**：  
-- 看不到边缘数据：确认 `.env` 中为中央 IP（跨机不能用 host.docker.internal）；`curl -s -o /dev/null -w "%{http_code}" http://<中央IP>:8428/health` 应为 200。  
+- 看不到边缘数据：确认 `.env` 中为中央 IP（跨机不能用 host.docker.internal）；`curl -s -o /dev/null -w "%{http_code}" http://<中央IP>:18428/health` 应为 200（需要带鉴权时用 `-u user:pass`）。  
 - 端口冲突：边缘已映射 9092，与中央 9091 区分。
 
 **详细**：[EDGE_AGENT_CONFIG](EDGE_AGENT_CONFIG.md)、[TARGETS_AND_MONITORING](TARGETS_AND_MONITORING.md)。
diff --git a/doc/EDGE_AGENT_CONFIG.md b/doc/EDGE_AGENT_CONFIG.md
index 6faa2df..4597140 100644
--- a/doc/EDGE_AGENT_CONFIG.md
+++ b/doc/EDGE_AGENT_CONFIG.md
@@ -27,7 +27,11 @@
 - **config/targets.csv**：统一监控目标（ping/onvif/topology），格式与脚本见 [TARGETS_AND_MONITORING.md](TARGETS_AND_MONITORING.md)。
 - **config/update-configs.sh**：从 targets.csv 生成 `target-onvif.json`、`target-ping.json`、`target-topology.geojson`。
 - **prometheus-edge (vmagent)**：使用 `config/vmagent/vmagent-scrape.yml.template` 抓取；`CENTRAL_SERVER_HOST`/`PORT` 来自 `.env`；磁盘缓存卷 `vmagent-cache-data`。
-- **.env**：`CENTRAL_SERVER_HOST`、`CENTRAL_SERVER_PORT=8428`、`EDGE_NODE_ID`。本机同机用 `./deploy.sh --local`；跨机配 `.env` 后 `./deploy.sh`。
+- **.env**：`CENTRAL_SERVER_HOST`、`CENTRAL_SERVER_PORT=18428`、`VMAUTH_WRITE_USER`、`VMAUTH_WRITE_PASSWORD`、`EDGE_NODE_ID`。本机同机用 `./deploy.sh --local`；跨机配 `.env` 后 `./deploy.sh`。
+
+## 严格多租户（推荐）
+
+中央启用 `central-server/config/vmauth/tenants.csv` 后，每个边缘节点建议配置独立的 `VMAUTH_WRITE_USER/VMAUTH_WRITE_PASSWORD`，与中央 tenants.csv 中对应的 write 账号一致；这样每个边缘写入各自 tenant，Grafana 也能按 tenant 独立查询。
 
 ## 常用操作
 
diff --git a/doc/TROUBLESHOOTING.md b/doc/TROUBLESHOOTING.md
index 987cbe6..a461bbc 100644
--- a/doc/TROUBLESHOOTING.md
+++ b/doc/TROUBLESHOOTING.md
@@ -64,7 +64,7 @@ netstat -tulpn | grep <端口>
 2. **在中央直接查 VictoriaMetrics**  
    在**中央服务器**上执行（或浏览器访问）：
    ```bash
-   curl -sG 'http://localhost:8428/api/v1/series' --data-urlencode 'match[]=probe_success{job="network-ping"}'
+   curl -u 'vm_read:change-me-strong-read' -sG 'http://localhost:18428/api/v1/series' --data-urlencode 'match[]=probe_success{job="network-ping"}'
    ```
    - 若返回 `"data":[]` 表示还没有收到边缘数据（可能是网络不通、刚启动未到抓取周期、或 remote_write 失败）。
    - 若 `data` 里有元素（带 `__name__`、`job`、`region` 等），说明边缘数据已写入中央。
@@ -81,7 +81,7 @@ curl http://localhost:9092/api/v1/query?query=up
 
 # 2. 检查网络连通性
 ping <中央服务器IP>
-telnet <中央服务器IP> 8428
+telnet <中央服务器IP> 18428
 
 # 3. 检查环境变量
 cat edge-agent/.env
diff --git a/edge-agent/deploy.sh b/edge-agent/deploy.sh
index 586358f..53e5b90 100644
--- a/edge-agent/deploy.sh
+++ b/edge-agent/deploy.sh
@@ -14,7 +14,7 @@ if [ "$1" = "--local" ]; then
     [ ! -f .env ] && [ -f env.example ] && cp env.example .env
     sed -i 's/^CENTRAL_SERVER_HOST=.*/CENTRAL_SERVER_HOST=host.docker.internal/' .env 2>/dev/null || \
         echo 'CENTRAL_SERVER_HOST=host.docker.internal' >> .env
-    grep -q '^CENTRAL_SERVER_PORT=' .env || echo 'CENTRAL_SERVER_PORT=8428' >> .env
+    grep -q '^CENTRAL_SERVER_PORT=' .env || echo 'CENTRAL_SERVER_PORT=18428' >> .env
 fi
 
 # Docker 环境
diff --git a/edge-agent/docker-compose.yml b/edge-agent/docker-compose.yml
index 97c0c46..197c65d 100644
--- a/edge-agent/docker-compose.yml
+++ b/edge-agent/docker-compose.yml
@@ -10,7 +10,9 @@ services:
     restart: unless-stopped
     environment:
       - CENTRAL_SERVER_HOST=${CENTRAL_SERVER_HOST:-192.168.1.10}
-      - CENTRAL_SERVER_PORT=${CENTRAL_SERVER_PORT:-8428}
+      - CENTRAL_SERVER_PORT=${CENTRAL_SERVER_PORT:-18428}
+      - VMAUTH_WRITE_USER=${VMAUTH_WRITE_USER:-vm_write}
+      - VMAUTH_WRITE_PASSWORD=${VMAUTH_WRITE_PASSWORD:-change-me-strong-write}
     volumes:
       - vmagent-cache-data:/cache
       - ./config/vmagent/vmagent-scrape.yml.template:/etc/vmagent/scrape.yml:ro
@@ -25,6 +27,8 @@ services:
     command:
       - -promscrape.config=/etc/vmagent/scrape.yml
       - -remoteWrite.url=http://${CENTRAL_SERVER_HOST}:${CENTRAL_SERVER_PORT}/api/v1/write
+      - -remoteWrite.basicAuth.username=${VMAUTH_WRITE_USER}
+      - -remoteWrite.basicAuth.password=${VMAUTH_WRITE_PASSWORD}
       - -remoteWrite.tmpDataPath=/cache/remotewrite
       - -remoteWrite.maxDiskUsagePerURL=512MB
       - -memory.allowedPercent=80
diff --git a/edge-agent/env.example b/edge-agent/env.example
index 57fdf90..341945d 100644
--- a/edge-agent/env.example
+++ b/edge-agent/env.example
@@ -5,19 +5,23 @@ CENTRAL_SERVER_HOST=192.168.1.10
 # 本机同机: CENTRAL_SERVER_HOST=host.docker.internal
 
 # 中央服务器端口
-CENTRAL_SERVER_PORT=8428
+CENTRAL_SERVER_PORT=18428
 # 常用端口说明:
-# 8428 - VictoriaMetrics (推荐)
+# 18428 - VictoriaMetrics (推荐)
 # 9090 - Prometheus
 # 8080 - 自定义端口
 
 # 边缘节点标识
 EDGE_NODE_ID=workernode_1
 
+# vmauth 写入账号（需与中央 central-server/.env 保持一致）
+VMAUTH_WRITE_USER=vm_write
+VMAUTH_WRITE_PASSWORD=change-me-strong-write
+
 # 远程写入配置
 # 边缘节点会将数据推送到中央服务器的VictoriaMetrics
 # 格式: http://域名或IP:端口/api/v1/write
-# 默认端口: 8428 (VictoriaMetrics)
+# 默认端口: 18428 (VictoriaMetrics)
 
 # 边缘缓存：docker-compose 使用 vmagent，含内存+磁盘缓存，详见 doc/EDGE_AGENT_CONFIG.md