So...about 5pm 2 nights ago, all 14 of my listeners on my Azure Service Bus dropped. So I logged in to my on-prem SQL Server to check on my Hybrid Connections and both of them showed a status of "Status Unknown". I can't find anything on the internet about this specific status.
Nothing changed on my SQL Server other than the fact that I've pegged the RAM....it's at 100% usage.
If I go to the Azure Portal, navigate to either of my Hybrid Connection Overview pages and click on the "Hybrid Connection Url", I get the following message in the browser:
"error": {
"code":"TokenMissingOrInvalid",
"message":"MissingToken: Relay security token is required. TrackingId:*SOME GUID*, SystemTracker:*SERVICE BUS NAME*:*HYBRID CONNECTION NAME*, Timestamp:2021-08-04T04:19:16"}
}
Now....I didn't change anything on my Hybrid Connection configurations. I haven't changed anything about tokens. I have no idea what's going on other than my Azure App Services have been down for 2 days, now.
Any help would be greatly appreciated....
This looks like an authentication error where a token might not be generating when you are trying to make a call to the underlying On prem server
You can refer the SO thread for ServiceBusAuthorization and still if you are facing the issue kindly raise a ticket with MS-Q&A
Microsoft support led me to this article where I found the following information:
Make Sure that the Date and Time are Correct
The Hybrid Connection Manager connects to Azure Relay using Secure Sockets Layer (SSL) on port 443. If there's a problem with your SSL handshake or connection, it will break your Hybrid Connection. If you find that your Hybrid Connection works initially, and then it stops working after about 10 minutes, that's a sign that you need to check the date and time on the machine running the Hybrid Connection Manager. Make sure they are correct because if they're not, your SSL connection may not work.
Well...the time on my server was off by about 16 minutes b/c of a group policy that I had never bothered to fix b/c I don't know anything about group policies. So I looked up how to fix the server's clock and, once that done, resolved this issue.
Related
I have hosted an MVC application in Azure App Service. The application is not creating any problem when i am testing it in local host. I can easily connect to the Dynamics-365 through the SDK and can do easily CRUD operation.
But when i am trying to login which is hosted in Azure it is giving that error though am not getting this error if i restart the app service. If i restart the app service in every morning then i am not getting this error. But i don't want to restart the app service daily.
Here the same question also has been asked but there is not any solution which has been marked as Solved. Time zone difference between client and server has been discussed here but the part which confused me when i am restarting the app service it is working.
How to solve this issue? I am thinking about app service Auto Healing. Should this work?
Any solution would be appreciated.
Thanks in advance.
From your description of Question it looks like connection pool issue. You probably are not closing connection after your transaction is completed. Try force closing connection (threads) that might solve your issue.
OR
The clock on the Server hosting client application was out of sync with the server having the service.
This is almost always because of a server time skew. The remote server
and the client's system time must be within (typically) 10 minutes of
each other. If they are not, security validation will fail.
I'd check azure service bus and find out what their server time is, and
compare that to your server time.
WCF gives an unsecured or incorrectly secured fault error
https://social.msdn.microsoft.com/Forums/vstudio/en-US/ae4172dd-e215-4a72-b927-d164ce4cc318/an-unsecured-or-incorrectly-secured-fault-was-received-from-the-other-party?forum=wcf
I've just spun up an instance Azure SQL server. I can connect to it from the Azure Portal, but I get a timeout error when trying to connect with SQL Management Studio (and other methods):
Cannot connect to *server*,*port*.
Additional information:
A connection was successfully established with the server, but then an error occurred during the pre-login handshake. (provider: TCP Provider, error: 0 - The semaphore timeout period has expired.)
(Microsoft SQL Server, Error: 121)
The semaphore timeout period has expired
I've been searching for a solution but the only thing I find about the error message is that the database is under heavy load, which seems unlikely concidering it was just created!
Anybody know what can cause this problem?
Thanks!
Error 121 has always been considered a network related error as you can read in this Microsoft Support article. The Internet service you receive, network adapters are things you should consider examine.
Please consider to click the "Options" button of SQL Server Management Studio, on the "Connection Properties" tab, try setting a greater value for the "Connection time-out" setting.
If you need to use a Corporate VPN to connect to Azure SQL Database, make sure you are connected to the VPN.
Problem is related to a Firewall in the middle doing SSL inspection.
I Suggest to try requesting your firewall admin to add an exemption on the SSL Inspection engine , or try using another connection not doing SSL inspection.
So it seems it was the company firewall that was blocking the traffic. I tried from another network entirely and then I could access the server.
I guess my two alternatives now are either to unblock 1433 in the company firewall, or to open another port in Azure SQL Server, which doesn't seem possible at the moment.
Created an azure MVC website, from service (controller) code we are connecting to an on-premise sql server using Azure Hybrid Connection. Intermittently we are facing below issue.
"A transport-level error has occurred when receiving results from the
server. (provider: TCP Provider, error: 0 - The specified network name
is no longer available.)"
Please provide suggestions to resolve this issue.
You can try following solutions :
Try increasing connection time-out.
check if remote connection is enabled.
Try adding firewall exception.
First of all the error means either the networks has some extra latency, the database is down or you may have too many concurrent connections open the database.
(Make sure you are closing all open datareaders.)
also it may be due to this
These are transient faults and are to be expected in the cloud. Implementing defensive programming is usually a must in the cloud. Try using some retry logic. Microsoft's transient fault exception library is an excellent start. Though meant primarily for SQL Azure and Azure Service bus, you can use the library for SQL IaaS.
In my opinion, 98% sure, because I recently had the same experience, it is a network issue from the server provider.
For instance: if you are rent the server from Ionos, by default all remote connections are blocked, even though you disable the firewall in the server. You still won't be able to connect remotely. You can, however, do your work on the server without any problem.
To connect remotely, you have to contact the server provider. They will explain how to enable firewall ports from your control panel.
I contacted my server provider as I almost get frustrated. Here was their response.
enter image description here
After this, every permitted client can connect remotely to the server.
I wish you success.
We are running some long-running test apps with Azure Service Bus relay over http, hosted in a windows service and most of the time, these run fine for 2-3 days. However every so often an internal network glich may occur (e.g. firewall reboots) that kills the internet connection.
At this point, the relay is dropped in Azure and our web app can no longer communicate with the on-premise service.
I would have thought that the Azure relay client was fault-tolerant - in that if it realises that it's lost connection with Azure then it will re-establish the connection andf if it can't keep trying until it can.. but it appears that this is not the case. This seems pretty fundamental...?
Only once have I ever seen a "System.ServiceModel.CommunicationException" where the service can't communicate on the internet, and that was when the client was starting up and trying to establish the connection in the first place.
Is there any advice or feedback on handling transient disconnections through the relay service (as it's a cloud --> on-prem direction then the client can't AFAIK ping the server).
If you are still experiencing issues, you may want to contact Azure support to understand why it is disconnecting. The Relay client should reconnect if something happens to the existing connection.
You may want to add ConnectionStatusBehavior to your ChannelFactory to have it output when the status for the connection changes. It will contain the error that caused it to change status.
var connectionStatusBehavior = new ConnectionStatusBehavior();
connectionStatusBehavior.Online += ConnectionStatusOnlineMethod;
connectionStatusBehavior.Offline += ConnectionStatusOfflineMethod;
channelFactory.Endpoint.Behaviors.Add(connectionStatusBehavior);
This issue is solved by Microsoft in version 2.6.5 of Microsoft Azure Service Bus dll. After 1 month of testing it seems to work.
I have an MVC 4 website using a WCF service. When I deploy to Windows Azure using the VS 2012 publish wizard, I get this error:
10:13:19 AM - The HTTP request to 'https://management.core.windows.net/42d4257b-5f38-400d-aac5-2e7acee9597d/services/hostedservices/myapp?embed-detail=true' has exceeded the allotted timeout of 00:01:00. The time allotted to this operation may have been a portion of a longer timeout.
After cleaning the project and publishing a few times, the error goes away. What am I doing wrong?
Whenever you start publish process from VS machine, a SSL tunnel is established first and once the tunnel is created, the package is transferred from your machine to Windows Azure Portal first. After the upload is completed, you will see the result notifications are posted back to Publish result windows and that is how it happens.
In your case, the time to build the SSL tunnel doe secure package transfer is longer then normal, this could be because of network latency between your machine and the Windows Azure Management Portal. For security reason the time to create the tunnel smaller windows and if the connection is not created, the retry cycle starts the process again and even if that fails you are greeted with the failure message. This could be caused by excessive traffic on either side or both sides. So this is mainly a networking related issue rather then specific to Windows Azure as after some time successive tries, you could upload your package.
In such failure/situation, you can run network capture utilities i.e netmon, wireshark, and see the time taken during failure and success to see the different in various transfer. This will help you to understand the underlying delaying issues.
Try to update your roles diagnostics
like below
then update your storage credentials because it may be expired.