Service Fabric内部DNS突然停止工作

Question

通常，我们可以使用Azure Service Fabric DNS通过服务名称对另一个服务执行ping操作。昨晚凌晨1点左右，此操作停止了。没有更改代码或配置，也没有部署任何内容。现在，我们无法在容器内对其他服务执行ping操作：

一些信息：我们正在Azure中运行Service Fabric，并正在运行Windows群集。我们所有的服务都使用Windows Docker在Docker容器中运行。

我们尝试过的方法：重新启动VM，删除和重新部署所有应用程序，重新启动群集中的Naming Service和DNS服务。

有人看到过这样的东西吗？我正在寻找有关可能出问题或如何进一步调试此问题的提示。同样，没有部署任何内容，也没有更改代码或配置。似乎Service Fabric的内部DNS突然关闭并且不会再次出现。谢谢！

更新：其中一个节点上的Get-ServiceFabricNodeHealth输出：

NodeName              : _B_41
AggregatedHealthState : Ok
HealthEvents          :
                        SourceId              : System.FabricNode
                        Property              : Certificate_client
                        HealthState           : Ok
                        SequenceNumber        : 132078454391466815
                        SentAt                : 7/17/2019 1:57:19 PM
                        ReceivedAt            : 7/17/2019 1:57:24 PM
                        TTL                   : Infinite
                        Description           : Certificate expiration: thumbprint = adf7ae93a524d181106b0467a1f8e3375e1bf65f, expiration = 2020-06-20 01:17:33.000, remaining lifetime is
                        338:11:20:13.853, please refresh ahead of time to avoid catastrophic failure. Warning threshold Security/CertificateExpirySafetyMargin is configured at 30:0:00:00.000, if
                        needed, you can adjust it to fit your refresh process.
                        RemoveWhenExpired     : False
                        IsExpired             : False
                        Transitions           : Warning->Ok = 7/13/2019 11:22:17 AM, LastError = 1/1/0001 12:00:00 AM

                        SourceId              : System.FabricNode
                        Property              : Certificate_cluster
                        HealthState           : Ok
                        SequenceNumber        : 132078386480915827
                        SentAt                : 7/17/2019 12:04:08 PM
                        ReceivedAt            : 7/17/2019 12:04:23 PM
                        TTL                   : Infinite
                        Description           : Certificate expiration: thumbprint = adf7ae93a524d181106b0467a1f8e3375e1bf65f, expiration = 2020-06-20 01:17:33.000, remaining lifetime is
                        338:13:13:24.908, please refresh ahead of time to avoid catastrophic failure. Warning threshold Security/CertificateExpirySafetyMargin is configured at 30:0:00:00.000, if
                        needed, you can adjust it to fit your refresh process.
                        RemoveWhenExpired     : False
                        IsExpired             : False
                        Transitions           : Warning->Ok = 7/13/2019 7:04:12 AM, LastError = 1/1/0001 12:00:00 AM

                        SourceId              : System.FabricNode
                        Property              : Certificate_server
                        HealthState           : Ok
                        SequenceNumber        : 132078441374480374
                        SentAt                : 7/17/2019 1:35:37 PM
                        ReceivedAt            : 7/17/2019 1:35:54 PM
                        TTL                   : Infinite
                        Description           : Certificate expiration: thumbprint = adf7ae93a524d181106b0467a1f8e3375e1bf65f, expiration = 2020-06-20 01:17:33.000, remaining lifetime is
                        338:11:41:55.551, please refresh ahead of time to avoid catastrophic failure. Warning threshold Security/CertificateExpirySafetyMargin is configured at 30:0:00:00.000, if
                        needed, you can adjust it to fit your refresh process.
                        RemoveWhenExpired     : False
                        IsExpired             : False
                        Transitions           : Warning->Ok = 7/13/2019 4:35:41 AM, LastError = 1/1/0001 12:00:00 AM

                        SourceId              : System.RA
                        Property              : RAStoreProvider
                        HealthState           : Ok
                        SequenceNumber        : 132072866375071389
                        SentAt                : 7/11/2019 2:43:57 AM
                        ReceivedAt            : 7/13/2019 1:15:33 PM
                        TTL                   : Infinite
                        Description           : Store provider type ESE created and opened successfully.
                        RemoveWhenExpired     : False
                        IsExpired             : False
                        Transitions           : Warning->Ok = 7/11/2019 2:44:27 AM, LastError = 1/1/0001 12:00:00 AM

                        SourceId              : System.FM
                        Property              : State
                        HealthState           : Ok
                        SequenceNumber        : 181
                        SentAt                : 7/11/2019 2:44:15 AM
                        ReceivedAt            : 7/13/2019 1:15:33 PM
                        TTL                   : Infinite
                        Description           : Fabric node is up.
                        RemoveWhenExpired     : False
                        IsExpired             : False
                        Transitions           : Warning->Ok = 7/11/2019 2:44:44 AM, LastError = 1/1/0001 12:00:00 AM

更新2：来自Docker容器中的网络接口信息：