c# - 带有 Azure Linux VM 的 Couchbase

Question

我在 Azure 上安装了 ubuntu 服务器虚拟机，我安装了 couchbase 社区版，现在我需要使用 dotnet SDK 访问 couchbase，但代码给出了存储桶未找到或无法访问错误。即使我尝试配置公共(public) dns 并在集群创建期间将其指定为 ip，但它仍然给出相同的值。即使我将公共(public) dns 添加到主机文件中，如下所示127.0.0.1 公共(public)域名SDK日志包含以下2条语句尝试在端点“name.eastus.cloudapp.azure.com”上引导失败。 (e80489ed)由于连接方在一段时间后没有正确响应而导致连接尝试失败，或者由于连接的主机无法响应而建立连接失败。

SDK医生日志:

09:51:20.331 INFO ▶ Parsing connection string `couchbases://hsotname.eastus.cloudapp.azure.com/travel-sample`
09:51:20.334 INFO ▶ Connection string was parsed as a potential DNS SRV record
09:51:31.316 INFO ▶ Connection string specifies to use secured connections
09:51:31.316 INFO ▶ Connection string identifies the following CCCP endpoints:
09:51:31.316 INFO ▶   1. hsotname.eastus.cloudapp.azure.com:11207
09:51:31.316 INFO ▶ Connection string identifies the following HTTP endpoints:
09:51:31.316 INFO ▶   1. hsotname.eastus.cloudapp.azure.com:18091
09:51:31.316 INFO ▶ Connection string specifies bucket `travel-sample`
09:51:31.316 WARN ▶ No certificate authority file specified (--tls-ca), skipping server certificate verification for this run.
09:51:42.453 WARN ▶ Your connection string specifies only a single host.  You should consider adding additional static nodes from your cluster to this list to improve your applications fault-tolerance
09:51:42.462 INFO ▶ Performing DNS lookup for host `hsotname.eastus.cloudapp.azure.com`
09:51:42.462 INFO ▶ Bootstrap host `hsotname.eastus.cloudapp.azure.com` refers to a server with the address `13.82.80.55`
09:51:42.462 INFO ▶ Attempting to connect to cluster via CCCP
09:51:42.463 INFO ▶ Attempting to fetch config via cccp from `hsotname.eastus.cloudapp.azure.com:11207`
09:51:44.474 ERRO ▶ Failed to fetch configuration via cccp from `hsotname.eastus.cloudapp.azure.com:11207` (error: dial tcp 13.82.80.55:11207: i/o timeout)
09:51:44.474 INFO ▶ Attempting to connect to cluster via HTTP (Terse)
09:51:44.474 INFO ▶ Attempting to fetch terse config via http from `hsotname.eastus.cloudapp.azure.com:18091`
09:51:46.480 ERRO ▶ Failed to fetch terse configuration via http from `hsotname.eastus.cloudapp.azure.com:18091` (error: Get "http://hsotname.eastus.cloudapp.azure.com:18091/pools/default/b/travel-sample": context deadline exceeded (Client.Timeout exceeded while awaiting headers))
09:51:46.480 INFO ▶ Attempting to connect to cluster via HTTP (Full)
09:51:46.480 INFO ▶ Failed to connect via HTTP (Full), as it is not yet supported by the doctor
09:51:46.481 INFO ▶ Selected the following network type:
09:51:46.481 ERRO ▶ All endpoints specified by your connection string were unreachable, further cluster diagnostics are not possible
09:51:46.481 INFO ▶ Diagnostics completed

Summary:
←[33m[WARN]←[0m No certificate authority file specified (--tls-ca), skipping server certificate verification for this run.
←[33m[WARN]←[0m Your connection string specifies only a single host.  You should consider adding additional static nodes from your cluster to this list to improve your applications fault-tolerance
←[31m[ERRO]←[0m Failed to fetch configuration via cccp from `hsotname.eastus.cloudapp.azure.com:11207` (error: dial tcp 13.82.80.55:11207: i/o timeout)
←[31m[ERRO]←[0m Failed to fetch terse configuration via http from `hsotname.eastus.cloudapp.azure.com:18091` (error: Get "http://hsotname.eastus.cloudapp.azure.com:18091/pools/default/b/travel-sample": context deadline exceeded (Client.Timeout exceeded while awaiting headers))
←[31m[ERRO]←[0m All endpoints specified by your connection string were unreachable, further cluster diagnostics are not possible

Found multiple issues, see listing above.

我添加了 18091 和 11207 端口作为入站规则。我的 ufw 状态为非事件状态上述2个端口没有监听

couchbaseadm@couchbasedbserver:~$ sudo lsof -i -P -n | grep 听

systemd-r   926 systemd-resolve   13u  IPv4   18715      0t0  TCP 127.0.0.53:53 (LISTEN)
sshd       1103            root    3u  IPv4   21086      0t0  TCP *:22 (LISTEN)
sshd       1103            root    4u  IPv6   21088      0t0  TCP *:22 (LISTEN)
beam.smp   6323       couchbase   17u  IPv4 3937812      0t0  TCP 127.0.0.1:21200 (LISTEN)
epmd       6354       couchbase    3u  IPv4 3937267      0t0  TCP *:4369 (LISTEN)
epmd       6354       couchbase    4u  IPv6 3937268      0t0  TCP *:4369 (LISTEN)
beam.smp   6465       couchbase   34u  IPv4 3943391      0t0  TCP *:21100 (LISTEN)
beam.smp   6465       couchbase   48u  IPv4 3938657      0t0  TCP *:8091 (LISTEN)
beam.smp   6514       couchbase   17u  IPv4 3938608      0t0  TCP 127.0.0.1:21300 (LISTEN)
beam.smp   6514       couchbase   27u  IPv4 3938628      0t0  TCP *:8092 (LISTEN)
prometheu  6563       couchbase    9u  IPv4 3938650      0t0  TCP 127.0.0.1:9123 (LISTEN)
goxdcr     6583       couchbase   11u  IPv4 3938705      0t0  TCP 127.0.0.1:9998 (LISTEN)
memcached  6592       couchbase    5u  IPv4 3938689      0t0  TCP 127.0.0.1:11280 (LISTEN)
memcached  6592       couchbase   12u  IPv4 3937931      0t0  TCP *:11210 (LISTEN)
memcached  6592       couchbase   13u  IPv4 3937932      0t0  TCP *:11209 (LISTEN)
memcached  6592       couchbase   14u  IPv6 3937933      0t0  TCP *:11210 (LISTEN)
memcached  6592       couchbase   15u  IPv6 3937934      0t0  TCP *:11209 (LISTEN)
indexer    6741       couchbase   16u  IPv4 3944492      0t0  TCP *:9101 (LISTEN)
indexer    6741       couchbase   19u  IPv4 3944066      0t0  TCP *:9100 (LISTEN)
indexer    6741       couchbase   20u  IPv4 3944500      0t0  TCP *:9102 (LISTEN)
indexer    6741       couchbase   69u  IPv4 3946013      0t0  TCP *:9105 (LISTEN)
projector  6762       couchbase    9u  IPv4 3944075      0t0  TCP *:9999 (LISTEN)
cbq-engin  6782       couchbase    7u  IPv6 3944534      0t0  TCP *:8093 (LISTEN)
cbq-engin  6782       couchbase    8u  IPv4 3944535      0t0  TCP *:8093 (LISTEN)
cbft       6799       couchbase    8u  IPv4 3944112      0t0  TCP *:9130 (LISTEN)
cbft       6799       couchbase    9u  IPv4 3944149      0t0  TCP *:8094 (LISTEN)
sync_gate 11950    sync_gateway    8u  IPv4 4119414      0t0  TCP 127.0.0.1:4985 (LISTEN)
sync_gate 11950    sync_gateway    9u  IPv6 4119422      0t0  TCP *:4984 (LISTEN)

这是堆栈跟踪:

StackTrace " at Couchbase.Core.ClusterContext.d__58.MoveNext()\r\n
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n
at System.Threading.Tasks.ValueTask1.get_Result()\r\n at System.Runtime.CompilerServices.ConfiguredValueTaskAwaitable1.ConfiguredValueTaskAwaiter.GetResult()\r\n
at Couchbase.Cluster.<>c__DisplayClass30_0.<b__0>d.MoveNext()\r\n
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n
at System.Threading.Tasks.ValueTask1.get_Result()\r\n at System.Runtime.CompilerServices.ConfiguredValueTaskAwaitable1.ConfiguredValueTaskAwaiter.GetResult()\r\n

Dotnet SDK 日志

2022-02-09T17:28:46.3409884+05:30  [DBG] Waiting for 00:00:02.5000000 before polling. (c8639b24)
2022-02-09T17:28:48.8643285+05:30  [DBG] Done waiting, polling... (93018145)
2022-02-09T17:28:48.8649060+05:30  [DBG] Waiting for 00:00:02.5000000 before polling. (c8639b24)
2022-02-09T17:28:51.3664735+05:30  [DBG] Done waiting, polling... (93018145)
2022-02-09T17:28:51.3667541+05:30  [DBG] Waiting for 00:00:02.5000000 before polling. (c8639b24)
2022-02-09T17:28:53.8811651+05:30  [DBG] Done waiting, polling... (93018145)
2022-02-09T17:28:53.8814100+05:30  [DBG] Waiting for 00:00:02.5000000 before polling. (c8639b24)
2022-02-09T17:28:56.3823825+05:30  [DBG] Done waiting, polling... (93018145)
2022-02-09T17:28:56.3826183+05:30  [DBG] Waiting for 00:00:02.5000000 before polling. (c8639b24)
2022-02-09T17:28:58.8964320+05:30  [DBG] Done waiting, polling... (93018145)
2022-02-09T17:28:58.8967224+05:30  [DBG] Waiting for 00:00:02.5000000 before polling. (c8639b24)
2022-02-09T17:29:01.4007664+05:30  [DBG] Done waiting, polling... (93018145)
2022-02-09T17:29:01.4010274+05:30  [DBG] Waiting for 00:00:02.5000000 before polling. (c8639b24)
2022-02-09T17:29:01.7019750+05:30  [INF] Error trying to retrieve DNS SRV entries. (addddf06)
DnsClient.DnsResponseException: Query 12389 => _couchbases._tcp.hsotname.eastus.cloudapp.azure.com IN SRV on 192.168.8.1:53 timed out or is a transient error.
 ---> System.OperationCanceledException: The operation was canceled.
   at System.Threading.Tasks.TaskExtensions.WithCancellation[T](Task`1 task, CancellationToken cancellationToken, Action onCancel)
   at DnsClient.LookupClient.ResolveQueryAsync(IReadOnlyList`1 servers, DnsQuerySettings settings, DnsMessageHandler handler, DnsRequestMessage request, LookupClientAudit audit, CancellationToken cancellationToken)
   --- End of inner exception stack trace ---
   at DnsClient.LookupClient.ResolveQueryAsync(IReadOnlyList`1 servers, DnsQuerySettings settings, DnsMessageHandler handler, DnsRequestMessage request, LookupClientAudit audit, CancellationToken cancellationToken)
   at DnsClient.LookupClient.QueryInternalAsync(DnsQuestion question, DnsQuerySettings queryOptions, IReadOnlyCollection`1 servers, CancellationToken cancellationToken)
   at Couchbase.DnsClientDnsResolver.GetDnsSrvEntriesAsync(Uri bootstrapUri, CancellationToken cancellationToken)
   at Couchbase.Core.ClusterContext.BootstrapGlobalAsync()
2022-02-09T17:29:01.7034867+05:30  [DBG] Bootstrapping with node "hsotname.eastus.cloudapp.azure.com" (98ca0e33)
2022-02-09T17:29:03.9124149+05:30  [DBG] Done waiting, polling... (93018145)
2022-02-09T17:29:03.9127285+05:30  [DBG] Waiting for 00:00:02.5000000 before polling. (c8639b24)
2022-02-09T17:29:06.4201295+05:30  [DBG] Done waiting, polling... (93018145)
2022-02-09T17:29:06.4205385+05:30  [DBG] Waiting for 00:00:02.5000000 before polling. (c8639b24)
2022-02-09T17:29:08.9317820+05:30  [DBG] Done waiting, polling... (93018145)
2022-02-09T17:29:08.9320832+05:30  [DBG] Waiting for 00:00:02.5000000 before polling. (c8639b24)
2022-02-09T17:29:11.4459313+05:30  [DBG] Done waiting, polling... (93018145)
2022-02-09T17:29:11.4463142+05:30  [DBG] Waiting for 00:00:02.5000000 before polling. (c8639b24)
2022-02-09T17:29:12.1488979+05:30  [DBG] Attempted bootstrapping on endpoint "hsotname.eastus.cloudapp.azure.com" has failed. (e80489ed)
System.Net.Sockets.SocketException (10060): A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
   at Couchbase.Core.IO.Connections.ConnectionFactory.CreateAndConnectAsync(HostEndpointWithPort hostEndpoint, CancellationToken cancellationToken)
   at Couchbase.Core.IO.Connections.ConnectionPoolBase.CreateConnectionAsync(CancellationToken cancellationToken)
   at Couchbase.Core.IO.Connections.DataFlow.DataFlowConnectionPool.<>c__DisplayClass30_0.<<AddConnectionsAsync>g__StartConnection|0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at Couchbase.Core.IO.Connections.DataFlow.DataFlowConnectionPool.AddConnectionsAsync(Int32 count, CancellationToken cancellationToken)
   at Couchbase.Core.IO.Connections.DataFlow.DataFlowConnectionPool.InitializeAsync(CancellationToken cancellationToken)
   at Couchbase.Core.ClusterNode.InitializeAsync()
   at Couchbase.Core.DI.ClusterNodeFactory.CreateAndConnectAsync(HostEndpointWithPort endPoint, BucketType bucketType, NodeAdapter nodeAdapter, CancellationToken cancellationToken)
   at Couchbase.Core.ClusterContext.BootstrapGlobalAsync()
2022-02-09T17:29:33.3259787+05:30  [DBG] Done waiting, polling... (93018145)
2022-02-09T17:29:33.3262710+05:30  [DBG] Waiting for 00:00:02.5000000 before polling. (c8639b24)
2022-02-09T17:29:35.8341848+05:30  [DBG] Done waiting, polling... (93018145)
2022-02-09T17:29:35.8343993+05:30  [DBG] Waiting for 00:00:02.5000000 before polling. (c8639b24)
2022-02-09T17:29:36.9552318+05:30  [DBG] Setting TCP Keep-Alives using SocketOptions - enable keep-alives True, time 00:01:00, interval 00:00:01. (d66a37aa)
2022-02-09T17:29:36.9596725+05:30  [DBG] Setting TCP Keep-Alives using SocketOptions - enable keep-alives True, time 00:01:00, interval 00:00:01. (d66a37aa)
2022-02-09T17:29:37.0170984+05:30  [INF] Cannot bootstrap bucket "travel-sample" as Couchbase. (1ecb21a9)
System.IO.IOException: The operation is not allowed on non-connected sockets.
   at System.Net.Sockets.NetworkStream..ctor(Socket socket, FileAccess access, Boolean ownsSocket)
   at Couchbase.Core.IO.Connections.ConnectionFactory.CreateAndConnectAsync(HostEndpointWithPort hostEndpoint, CancellationToken cancellationToken)
   at Couchbase.Core.IO.Connections.ConnectionPoolBase.CreateConnectionAsync(CancellationToken cancellationToken)
   at Couchbase.Core.IO.Connections.DataFlow.DataFlowConnectionPool.<>c__DisplayClass30_0.<<AddConnectionsAsync>g__StartConnection|0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at Couchbase.Core.IO.Connections.DataFlow.DataFlowConnectionPool.AddConnectionsAsync(Int32 count, CancellationToken cancellationToken)
   at Couchbase.Core.IO.Connections.DataFlow.DataFlowConnectionPool.InitializeAsync(CancellationToken cancellationToken)
   at Couchbase.Core.ClusterNode.InitializeAsync()
   at Couchbase.Core.DI.ClusterNodeFactory.CreateAndConnectAsync(HostEndpointWithPort endPoint, BucketType bucketType, NodeAdapter nodeAdapter, CancellationToken cancellationToken)
   at Couchbase.Core.ClusterContext.CreateAndBootStrapBucketAsync(String name, HostEndpointWithPort endpoint, BucketType type)
   at Couchbase.Core.ClusterContext.GetOrCreateBucketAsync(String name)
2022-02-09T17:29:38.3360012+05:30  [DBG] Done waiting, polling... (93018145)
2022-02-09T17:29:38.3361875+05:30  [DBG] Waiting for 00:00:02.5000000 before polling. (c8639b24)
2022-02-09T17:29:40.3244490+05:30  [DBG] Setting TCP Keep-Alives using SocketOptions - enable keep-alives True, time 00:01:00, interval 00:00:01. (d66a37aa)
2022-02-09T17:29:40.3507801+05:30  [DBG] Setting TCP Keep-Alives using SocketOptions - enable keep-alives True, time 00:01:00, interval 00:00:01. (d66a37aa)
2022-02-09T17:29:40.3525230+05:30  [INF] Cannot bootstrap bucket "travel-sample" as Memcached. (1ecb21a9)
System.IO.IOException: The operation is not allowed on non-connected sockets.
   at System.Net.Sockets.NetworkStream..ctor(Socket socket, FileAccess access, Boolean ownsSocket)
   at Couchbase.Core.IO.Connections.ConnectionFactory.CreateAndConnectAsync(HostEndpointWithPort hostEndpoint, CancellationToken cancellationToken)
   at Couchbase.Core.IO.Connections.ConnectionPoolBase.CreateConnectionAsync(CancellationToken cancellationToken)
   at Couchbase.Core.IO.Connections.DataFlow.DataFlowConnectionPool.<>c__DisplayClass30_0.<<AddConnectionsAsync>g__StartConnection|0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at Couchbase.Core.IO.Connections.DataFlow.DataFlowConnectionPool.AddConnectionsAsync(Int32 count, CancellationToken cancellationToken)
   at Couchbase.Core.IO.Connections.DataFlow.DataFlowConnectionPool.InitializeAsync(CancellationToken cancellationToken)
   at Couchbase.Core.ClusterNode.InitializeAsync()
   at Couchbase.Core.DI.ClusterNodeFactory.CreateAndConnectAsync(HostEndpointWithPort endPoint, BucketType bucketType, NodeAdapter nodeAdapter, CancellationToken cancellationToken)
   at Couchbase.Core.ClusterContext.CreateAndBootStrapBucketAsync(String name, HostEndpointWithPort endpoint, BucketType type)
   at Couchbase.Core.ClusterContext.GetOrCreateBucketAsync(String name)
2022-02-09T17:29:40.8385667+05:30  [DBG] Done waiting, polling... (93018145)
2022-02-09T17:29:40.8387609+05:30  [DBG] Waiting for 00:00:02.5000000 before polling. (c8639b24)
2022-02-09T17:29:43.3380840+05:30  [DBG] Done waiting, polling... (93018145)
2022-02-09T17:29:43.3382393+05:30  [DBG] Waiting for 00:00:02.5000000 before polling. (c8639b24)
2022-02-09T17:29:43.6633010+05:30  [DBG] Setting TCP Keep-Alives using SocketOptions - enable keep-alives True, time 00:01:00, interval 00:00:01. (d66a37aa)
2022-02-09T17:29:43.6842924+05:30  [DBG] Setting TCP Keep-Alives using SocketOptions - enable keep-alives True, time 00:01:00, interval 00:00:01. (d66a37aa)
2022-02-09T17:29:43.6862758+05:30  [INF] Cannot bootstrap bucket "travel-sample" as Ephemeral. (1ecb21a9)
System.IO.IOException: The operation is not allowed on non-connected sockets.
   at System.Net.Sockets.NetworkStream..ctor(Socket socket, FileAccess access, Boolean ownsSocket)
   at Couchbase.Core.IO.Connections.ConnectionFactory.CreateAndConnectAsync(HostEndpointWithPort hostEndpoint, CancellationToken cancellationToken)
   at Couchbase.Core.IO.Connections.ConnectionPoolBase.CreateConnectionAsync(CancellationToken cancellationToken)
   at Couchbase.Core.IO.Connections.DataFlow.DataFlowConnectionPool.<>c__DisplayClass30_0.<<AddConnectionsAsync>g__StartConnection|0>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at Couchbase.Core.IO.Connections.DataFlow.DataFlowConnectionPool.AddConnectionsAsync(Int32 count, CancellationToken cancellationToken)
   at Couchbase.Core.IO.Connections.DataFlow.DataFlowConnectionPool.InitializeAsync(CancellationToken cancellationToken)
   at Couchbase.Core.ClusterNode.InitializeAsync()
   at Couchbase.Core.DI.ClusterNodeFactory.CreateAndConnectAsync(HostEndpointWithPort endPoint, BucketType bucketType, NodeAdapter nodeAdapter, CancellationToken cancellationToken)
   at Couchbase.Core.ClusterContext.CreateAndBootStrapBucketAsync(String name, HostEndpointWithPort endpoint, BucketType type)
   at Couchbase.Core.ClusterContext.GetOrCreateBucketAsync(String name)

谢谢!!

Answer 1

感谢您提供如此详细的信息!我怀疑眼前的问题是您正在尝试使用 TLS 进行连接，而 Couchbase 社区版不支持 TLS(至少截至 2022 年 2 月不支持)。端口 11207 和 18091 用于 TLS 连接；正如您在 lsof 输出中观察到的那样，服务器没有监听这些端口。