第 3 章 服务网络故障排除

流程

1. 检查站点状态：

   $ skupper status --namespace west
   
   Skupper is enabled for namespace "west" in interior mode. It is connected to 2 other sites. It has 1 exposed services.

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   输出显示：

   • 指定命名空间中已存在站点。
   • 一个链接到另外两个站点的链接。
   • 服务在服务网络上公开，可从此命名空间访问。

2. 检查服务网络：

   $ skupper network status --namespace west
   
   Sites:
   ├─ [local] 05f8c38 - west
   │  URL: 10.110.15.54
   │  mode: interior
   │  name: west
   │  namespace: west
   │  version: 1.0.2
   │  ╰─ Services:
   │     ╰─ name: backend
   │        address: backend: 8080
   │        protocol: tcp
   ╰─ [remote] 1537b82 - east
      URL: 10.97.26.100
      name: east
      namespace: east
      sites linked to: 05f8c38-west
      version: 1.0.2
      ╰─ Services:
         ╰─ name: backend
            address: backend: 8080
            protocol: tcp
            ╰─ Targets:
               ├─ name: backend-77f8f45fc8-smckp
               ├─ name: backend-77f8f45fc8-gh6tp
               ╰─ name: backend-77f8f45fc8-m58tg

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   注意

   如果输出不是您预期的输出，您可能需要在继续操作前 检查链接。

   输出显示：

   • 服务网络上有 2 个站点，即 east 和 west。
   • 每个站点的详情，如命名空间名称。
   • 公开(Target)的原始服务，本例中为使用 tcp 协议公开的三个后端服务。
   • 服务网络上可用的服务，包括端口号。例如，backend:8080。

3. 检查服务网络上公开的服务状态：

   $ skupper service status
   Services exposed through Skupper:
   ╰─ backend (tcp port 8080)
      ╰─ Targets:
         ╰─ app=backend name=backend

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   输出显示 后端服务 以及该服务的相关目标。

   注意

   只有在当前集群中可用目标时，才会显示服务的相关目标。

4. 列出站点的事件：

   $ skupper debug events
   NAME                         COUNT                                                          AGE
   GatewayQueryRequest          3                                                              9m12s
                                3     gateway request                                          9m12s
   SiteQueryRequest             3                                                              9m12s
                                3     site data request                                        9m12s
   ServiceControllerEvent       9                                                              10m24s
                                2     service event for west/frontend                          10m24s
                                1     service event for west/backend                           10m26s
                                1     Checking service for: backend                            10m26s
                                2     Service definitions have changed                         10m26s
                                1     service event for west/skupper-router                    11m4s
   DefinitionMonitorEvent       15                                                             10m24s
                                2     service event for west/frontend                          10m24s
                                1     service event for west/backend                           10m26s
                                1     Service definitions have changed                         10m26s
                                5     deployment event for west/frontend                       10m34s
                                1     deployment event for west/skupper-service-controller     11m4s
   ServiceControllerUpdateEvent 1                                                              10m26s
                                1     Updating skupper-internal                                10m26s
   ServiceSyncEvent             3                                                              10m26s
                                1     Service interface(s) added backend                       10m26s
                                1     Service sync sender connection to                        11m4s
                                      amqps://skupper-router-local.west.svc.cluster.local:5671
                                      established
                                1     Service sync receiver connection to                      11m4s
                                      amqps://skupper-router-local.west.svc.cluster.local:5671
                                      established
   IpMappingEvent               5                                                              10m34s
                                1     172.17.0.7 mapped to frontend-6b4688bf56-rp9hc           10m34s
                                2      mapped to frontend-6b4688bf56-rp9hc                     10m54s
                                1     172.17.0.4 mapped to                                     11m4s
                                      skupper-service-controller-6c97c5cf5d-6nzph
                                1     172.17.0.3 mapped to skupper-router-547dffdcbf-l8pdc     11m4s
   TokenClaimVerification       1                                                              10m59s
                                1     Claim for efe3a241-3e4f-11ed-95d0-482ae336eb38 succeeded 10m59s

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   输出显示正在链接的站点，并在服务网络上公开的服务。但是，当报告问题且包含在 Application Interconnect debug tar 文件中时，此输出最有用。