graph TD
    A[中心云] -->|策略下发| B[区域控制器]
    B -->|管理| C[边缘站点1]
    B -->|管理| D[边缘站点2]
    C --> E[边缘节点]
    D --> F[边缘节点]
    
    subgraph 边缘站点
        C --> G[Nova边缘计算]
        C --> H[Cinder边缘存储]
        C --> I[Neutron边缘网络]
        C --> J[Ironic裸机管理]
        C --> K[Kuryr容器网络]
    end

# ironic/drivers/modules/redfish.py
class StarlingXRedfishDriver(redfish.RedfishDriver):
    def deploy(self, task, timeout=None):
        # 低带宽优化：增量镜像传输
        if self._is_edge_site(task.node):
            self._deploy_via_rsync(task.node, timeout)
        else:
            super().deploy(task, timeout)
            
    def _deploy_via_rsync(self, node, timeout):
        # 使用rsync替代传统TFTP传输
        source = get_image_source(node)
        dest = f"{node.address}:/images/"
        run_command(f"rsync -avz --partial {source} {dest}")

# nova/scheduler/filters/edge_affinity.py
class EdgeAffinityFilter(filters.BaseHostFilter):
    def host_passes(self, host_state, spec_obj):
        # 检查主机是否匹配边缘标签
        if 'edge_group' in spec_obj.request_spec:
            return host_state.tags.get('edge_group') == spec_obj.request_spec['edge_group']
        return True

# nova/conductor/manager.py
def live_migrate(self, context, instance, dest_host):
    # 边缘迁移优化：压缩迁移数据
    if is_edge_host(dest_host):
        self._migrate_with_compression(instance, dest_host)

# cinder/volume/manager.py
def create_volume(self, volume):
    if volume.volume_type == 'edge-local':
        # 边缘本地卷
        self.driver.create_local_volume(volume)
    elif volume.volume_type == 'central-replicated':
        # 中心云创建并异步复制到边缘
        central_vol = central_cinder.create_volume(volume)
        start_replication_task(central_vol, volume)
        
# cinder/volume/drivers/stx/storage.py
class EdgeStorageDriver(driver.BaseVD):
    def create_volume(self, volume):
        # 使用本地SSD加速
        if volume.size < 100:  # GB
            return self._create_on_nvme(volume)
        else:
            return self._create_on_hdd(volume)

sequenceDiagram
    K8s Master->>Kuryr-CNI: 创建Pod请求
    Kuryr-CNI->>Neutron: 申请端口
    Neutron-->>Kuryr-CNI: 返回端口信息
    Kuryr-CNI->>OVS: 配置veth pair
    OVS-->>Kuryr-CNI: 确认配置
    Kuryr-CNI->>K8s Master: Pod创建完成

# magnum.conf
[cluster_template:edge-small]
master_flavor = mini
worker_count = 3
docker_volume_size = 5
coe = kubernetes
network_driver = kuryr
floating_ip_enabled = false  # 边缘无需公网IP

graph LR
    A[中心云MySQL] -->|数据同步| B[区域PostgreSQL]
    B -->|数据同步| C[边缘站点1 PostgreSQL]
    B -->|数据同步| D[边缘站点2 PostgreSQL]

# starlingx/db/sync.py
class EdgeDBSynchronizer:
    def sync(self, edge_db):
        # 增量同步：仅传输变更数据
        changes = self._get_changes_since_last_sync()
        edge_db.apply_changes(changes)
        
    def handle_conflict(self, local, remote):
        # 冲突解决：选择最新时间戳
        if local.timestamp > remote.timestamp:
            return local
        else:
            return remote

graph LR
    A[中心云] -->|IPSec VPN| B[区域网关]
    B -->|VXLAN| C[边缘站点1]
    B -->|VXLAN| D[边缘站点2]
    C -->|本地网络| E[边缘设备]
    D -->|本地网络| F[边缘设备]

# neutron/plugins/ml2/drivers/ovn/mech_driver.py
class EdgeOVNDriver(OVNMechanismDriver):
    def create_port(self, context):
        # 边缘站点使用本地网络
        if is_edge_network(context.network):
            self._create_local_port(context)
        else:
            super().create_port(context)

# nova/virt/libvirt/driver.py
class EdgeLibvirtDriver(libvirt.LibvirtDriver):
    def spawn(self, instance, image_meta, injected_files):
        # 边缘节点启用KVM加速
        if self._is_edge_node():
            domain_cfg = self._get_config(instance, image_meta)
            domain_cfg.features.append(libvirt.VIR_DOMAIN_FEATURE_KVM)
            self._create_domain(domain_cfg)

graph TD
    A[网络断开] --> B{边缘控制器}
    B -->|正常| C[本地服务继续运行]
    B -->|故障| D[自动切换到备份控制器]
    C --> E[本地数据缓存]
    E --> F[网络恢复后同步]

# starlingx/fm/fault_handlers.py
class EdgeSiteMonitor:
    def check_connectivity(self):
        if not self._ping_central():
            self._activate_local_mode()
            
    def _activate_local_mode(self):
        # 切换到本地数据库
        db.switch_to_local()
        # 禁用非核心服务
        service.disable('magnum')
        # 启用本地调度
        nova.enable_edge_scheduler()

# 安装StarlingX边缘节点
$ sudo stx-edge-install \
    --controller-ip 192.168.1.100 \
    --central-api https://central.cloud.example.com \
    --site-id edge-factory-01 \
    --network-config edge-net.yaml