ow listening on: http://[::]:5000
Application started. Press Ctrl+C to shut down.

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Unhandled Exception: System.Data.SqlClient.SqlException: A connection was successfully established with the server, but then an error occurred during the pre-login handshake. (provider: TCP Provider, error: 35 - An internal exception was caught) ---> System.Security.Authentication.AuthenticationException: Authentication failed, see inner exception. ---> Interop+OpenSsl+SslException: SSL Handshake failed with OpenSSL error - SSL_ERROR_SSL. ---> Interop+Crypto+OpenSslCryptographicException: error:1425F102:SSL routines:ssl_choose_client_version:unsupported protocol
--- End of inner exception stack trace ---
at Interop.OpenSsl.DoSslHandshake(SafeSslHandle context, Byte[] recvBuf, Int32 recvOffset, Int32 recvCount, Byte[]& sendBuf, Int32& sendCount)
at System.Net.Security.SslStreamPal.HandshakeInternal(SafeFreeCredentials credential, SafeDeleteContext& context, SecurityBuffer inputBuffer, SecurityBuffer outputBuffer, SslAuthenticationOptions sslAuthenticationOptions)
--- End of inner exception stack trace ---
at System.Net.Security.SslState.StartSendAuthResetSignal(ProtocolToken message, AsyncProtocolRequest asyncRequest, ExceptionDispatchInfo exception)
at System.Net.Security.SslState.CheckCompletionBeforeNextReceive(ProtocolToken message, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.StartSendBlob(Byte[] incoming, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.ProcessReceivedBlob(Byte[] buffer, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.StartReadFrame(Byte[] buffer, Int32 readBytes, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.CheckCompletionBeforeNextReceive(ProtocolToken message, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.StartSendBlob(Byte[] incoming, Int32 count, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.ForceAuthentication(Boolean receiveFirst, Byte[] buffer, AsyncProtocolRequest asyncRequest)
at System.Net.Security.SslState.ProcessAuthentication(LazyAsyncResult lazyResult)
at System.Net.Security.SslStream.AuthenticateAsClient(SslClientAuthenticationOptions sslClientAuthenticationOptions)
at System.Net.Security.SslStream.AuthenticateAsClient(String targetHost, X509CertificateCollection clientCertificates, SslProtocols enabledSslProtocols, Boolean checkCertificateRevocation)
at System.Net.Security.SslStream.AuthenticateAsClient(String targetHost)
at System.Data.SqlClient.SNI.SNITCPHandle.EnableSsl(UInt32 options)
--- End of inner exception stack trace ---
at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection)
at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection)
at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection)
at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
at System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions)
at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry)
at System.Data.SqlClient.SqlConnection.OpenAsync(CancellationToken cancellationToken)
--- End of stack trace from previous location where exception was thrown ---
at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.OpenDbConnectionAsync(Boolean errorsExpected, CancellationToken cancellationToken)
at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.OpenAsync(CancellationToken cancellationToken, Boolean errorsExpected)
at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.BeginTransactionAsync(IsolationLevel isolationLevel, CancellationToken cancellationToken)
at Microsoft.EntityFrameworkCore.Storage.RelationalConnection.BeginTransactionAsync(CancellationToken cancellationToken)
at Microsoft.EntityFrameworkCore.Update.Internal.BatchExecutor.ExecuteAsync(DbContext _, ValueTuple`2 parameters, CancellationToken cancellationToken)
at Microsoft.EntityFrameworkCore.SqlServer.Storage.Internal.SqlServerExecutionStrategy.ExecuteAsync[TState,TResult](TState state, Func`4 operation, Func`4 verifySucceeded, CancellationToken cancellationToken)
at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.SaveChangesAsync(IReadOnlyList`1 entriesToSave, CancellationToken cancellationToken)
at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.SaveChangesAsync(Boolean acceptAllChangesOnSuccess, CancellationToken cancellationToken)
at Microsoft.EntityFrameworkCore.DbContext.SaveChangesAsync(Boolean acceptAllChangesOnSuccess, CancellationToken cancellationToken)
at YiSha.Data.EF.SqlServerDatabase.Commit() in C: estYiShaAdmin.v2.2YiSha.DataYiSha.Data.EFDatabaseSqlServerDatabase.cs:line 69
at YiSha.Data.EF.SqlServerDatabase.Insert[T](T entity) in C: estYiShaAdmin.v2.2YiSha.DataYiSha.Data.EFDatabaseSqlServerDatabase.cs:line 166
at YiSha.Data.Repository.Repository.Insert[T](T entity) in C: estYiShaAdmin.v2.2YiSha.DataYiSha.Data.RepositoryRepository.cs:line 70
at YiSha.Service.SystemManage.LogOperateService.SaveForm(LogOperateEntity entity) in C: estYiShaAdmin.v2.2YiSha.BusinessYiSha.ServiceSystemManageLogOperateService.cs:line 50
at YiSha.Business.SystemManage.LogOperateBLL.SaveForm(LogOperateEntity entity) in C: estYiShaAdmin.v2.2YiSha.BusinessYiSha.BusinessSystemManageLogOperateBLL.cs:line 67
at YiSha.Admin.Web.Controllers.BaseController.<>c__DisplayClass0_0.<<OnActionExecutionAsync>b__1>d.MoveNext() in C: estYiShaAdmin.v2.2YiSha.WebYiSha.Admin.WebControllersBaseController.cs:line 151
--- End of stack trace from previous location where exception was thrown ---
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location where exception was thrown ---
at System.Threading.ThreadPoolWorkQueue.Dispatch()
Aborted (core dumped)

 當(dāng)訪問首頁的時候，則報錯：

Unhandled Exception: System.Data.SqlClient.SqlException: A connection was successfully established with the server, but then an error occurred during the pre-login handshake. (provider: TCP Provider, error: 35 - An internal exception was caught) ---> System.Security.Authentication.AuthenticationException: Authentication failed, see inner exception. ---> Interop+OpenSsl+SslException: SSL Handshake failed with OpenSSL error - SSL_ERROR_SSL. ---> Interop+Crypto+OpenSslCryptographicException: error:1425F102:SSL routines:ssl_choose_client_version:unsupported protocol

 參考了以下鏈接，結(jié)果還是不行。

https://www.cnblogs.com/dawenyang/p/12985957.html

https://docs.microsoft.com/en-us/sql/connect/ado-net/sqlclient-troubleshooting-guide?view=sql-server-ver15#login-phase-errors

最后參考 這個https://www.cnblogs.com/study10000/p/12858192.html

解決方案：由于我的Linux是 CentOS8_2，

找到  /usr/share/crypto-policies/DEFAULT，修改opensslcnf.txt  配置表，實際上 SQL Server 不支持 TLS 1.2，因此才需要修改

原始的：

下面的修改后的

#進(jìn)入www目錄
cd /var/www

#啟動站點，自定義端口號，運(yùn)行環(huán)境

//二種方式選其一種運(yùn)行即可
dotnet xxxxCore.dll--urls="http://*:5000"

（關(guān)閉ssh后，程序也會關(guān)閉）

nohup dotnet xxxxxxCore.dll --urls="http://*:5000"--environment=Delopment > /dev/null 2>&1 &

（程序后臺運(yùn)行，不會關(guān)閉）

原文鏈接 https://www.cnblogs.com/panjinzhao/p/14509088.html

網(wǎng)頁題目：centos8+NetCore2.2+SqlServer-創(chuàng)新互聯(lián)
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