I have written and successfully deployed a test app to the azure cloud, but I am lost now that I have added a queue to the application.
Currently I using a configuration string:
Setting name="DataConnectionString" value="UseDevelopmentStorage=true"
then create/open the queue with the following code:
var storageAccount = CloudStorageAccount.FromConfigurationSetting("DataConnectionString");
var queueClient = storageAccount.CreateCloudQueueClient();
var queue = queueClient.GetQueueReference("messagequeue");
queue.CreateIfNotExist();
This works fine in local mode, however,
I do not undertsand how to change the DataConnectionString to use the cloud!
I have tried:
Setting name="DataConnectionString" value="DefaultEndpointsProtocol=http;AccountName=*XXXXX*;AccountKey=*YYYYY*"
but this does not work - it wont run locally.
Help is certainly appreciated!
Thanks
You'll need to make sure you've created a hosted azure storage service via the Windows Azure portal. When creating the storage service, you provide the account name and the system will assign two keys. Use these two values in your connection string settings. You can either manually edit the string in the service configuration, or my preferred approach is to set it via the role's property settings. Simply right click on the role in the cloud service project in visual studio, then select properties. You'll be able to access the role's settings via one of the tabs. Use the provided dialog box to modify the connection string by inputing the account name and connection string for your storage service.
Related
I have WebJobs running under my Azure Web App. For Web App you can set that the Web App will use remote connection strings (that you setup on Azure portal).
Is it possible to do the same for WebJobs?
So they would be looking for remote connection string instead of using a connections string from (for example) "app.config".
Could you add the connection string as Web Config value that can be accessed by either the site or webjob?
Further more details you could refer to this blog:Configuring Azure Web Jobs.
The main steps are as follows:
Install CloudConfigurationManager package Microsoft.WindowsAzure.ConfigurationManager
Set your connection strings to the app setting.
Retrieve connection string using the CloudConfigurationManager:
var myConnectionString = CloudConfigurationManager.GetSetting("MyConnectionString");
I found out that a connection string setup on Azure Portal overwrites connection string with the same name in .config files. Which means that no additional setup is required.
Azure Portal Connection string takes priority over local *.config connection string.
I successfully tested this.
I developed a cron trigger azure fuction who needs to search for soe data in my database.
Localy i can connect whit sql server, so i change the connection string in loca.settings.json to connect in azure sql and published the function, but the function cant connect with database.
I need to do something more than configure the local.settings.json?
The local.settings.json is only used for local testing. It's not even exported to azure.
You need to create a connection string in your application settings.
In Azure Functions - click Platform features and then Configuration.
Set the connection string
A function app hosts the execution of your functions in Azure. As a best security practice, store connection strings and other secrets in your function app settings. Using application settings prevents accidental disclosure of the connection string with your code. You can access app settings for your function app right from Visual Studio.
You must have previously published your app to Azure. If you haven't already done so, Publish your function app to Azure.
In Solution Explorer, right-click the function app project and choose Publish > Manage application settings.... Select Add setting, in New app setting name, type sqldb_connection, and select OK.
Application settings for the function app.
In the new sqldb_connection setting, paste the connection string you copied in the previous section into the Local field and replace {your_username} and {your_password} placeholders with real values. Select Insert value from local to copy the updated value into the Remote field, and then select OK.
Add SQL connection string setting.
The connection strings are stored encrypted in Azure (Remote). To prevent leaking secrets, the local.settings.json project file (Local) should be excluded from source control, such as by using a .gitignore file.
https://learn.microsoft.com/en-us/azure/azure-functions/functions-scenario-database-table-cleanup
If you are using entity framework core to make a connection, Other Way of connection to SQL is by using dependency injection from .netcore library.
You can keep the connection string in Azure Key-vault or the config file from there you can read the same using azure function startup class. which need below code setup in your function app.
using Microsoft.Azure.Functions.Extensions.DependencyInjection;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
[assembly: FunctionsStartup(typeof( TEST.Startup))]
namespace TEST
{
internal class Startup : FunctionsStartup
{
public override void Configure(IFunctionsHostBuilder builder)
{
Contract.Requires(builder != null);
builder.Services.AddHttpClient();
var configBuilder = new ConfigurationBuilder()
.SetBasePath(Directory.GetCurrentDirectory())
.AddJsonFile("local.settings.json", optional: true, reloadOnChange: true)
.AddAzureKeyVault($"https://XYZkv.vault.azure.net/");
var configuration = configBuilder.Build();
var conn = configuration["connectionString"];
builder.Services.AddDbContext<yourDBContext>(
options => options.UseSqlServer(configuration["connectionString"]));
}
}
}
after that where ever you are injecting this dbcontext, with context object you can do all CRUD operations by following microsoft's entity framework core library documentation.
Having just dealt with this beast (using a custom handler with Linux), I believe the simple way is to upgrade your App to premium-plan, allowing you to access the "Networking" page from "App Service plans". This should allow you to put both sql-server and app in the same virtual network, which probably makes it easier. (but what do I know?)
Instead, if you don't have the extra cash laying around, you can try what I did, and set up a private endpoint, and use the proxy connection setting for your database:
Create a virtual network
I used Address space: 10.1.0.0/16 (default I think)
Add subnet 10.1.0.0/24 with any name (adding a subnet is required)
Go to "Private link center" and create a private endpoint.
any name, resource-group you fancy
use resource type "Microsoft.Sql/Server" and you should be able to select your sql-server (which I assume you have created already) and also set target sub-resource to "sqlServer" (the only option)
In the next step your virtual network and submask should be auto-selected
set Private DNS integration to yes (or suffer later).
Update your firewall by going to Sql Databases, select your database and click "Set Server Firewall" from the overview tab.
Set Connection Policy to proxy. (You either do this, or upgrade to premium!)
Add existing virtual network (rule with any name)
Whitelist IPs
There probably is some other way, but the azure-cli makes it easy to get all possible IP's your app might use: az functionapp show --resource-group <group_name> --name <app_name> --query possibleOutboundIpAddresses
https://learn.microsoft.com/en-us/azure/app-service/overview-inbound-outbound-ips
whitelist them all! (copy paste exercise)
Find your FQDN from Private link center > Private Endpoints > DNS Configuration. It's probably something like yourdb.privatelink.database.windows.net
Update your app to use this url. You just update your sql server connection string and replace the domain, for example as ADO string: Server=tcp:yourdb.privatelink.database.windows.net,1433;Initial Catalog=somedbname;Persist Security Info=False;User ID=someuser;Password=abc123;MultipleActiveResultSets=False;Encrypt=True;TrustServerCertificate=True;Connection Timeout=30;
Also note that I at some point during all of this I switched to TrustServerCertificate=True and now I can't bother to figure out if it does a difference or not. So I left it as an exercise to the reader to find out.
So what we have done here...?
We have forced your function app to go outside the "azure-sphere" by connecting to the private endpoint. I think that if you bounce between azure-services directly, then you'll need some sort of authentication (like logging in to your DB using AD), and in my case, using custom handler and linux base for my app, I think that means you need some trust negotiation (kerberos perhaps?). I couldn't figure that out, so I came up with this instead.
I am unable to access my Azure Function which I created in-portal. I can't get to the Kudus
I created the function in-portal I don't have the backup for the code I created in the portal. I need to get access to the code.
I did change the Azure Storage keys that were associated with the function, as new keys were generated due to some reasons.
Double check if WEBSITE_CONTENTAZUREFILECONNECTIONSTRING appSetting has the right connection string? Restart the site. You can also go to Azure Files (using Azure Portal) to see/download your content.
I have an ASP.NET MVC app deployed to Microsoft Azure App Service and am having some trouble with the appSettings and connectionStrings values.
I have some values set in the web.config and some values overriding them in the Application Settings tab of the App Service. I want to quickly and easily view the final values to check that the settings are being picked up correctly.
How can I do this?
Note: I've tried using az webapp config appsettings list but this only seems to bring back what is configured in the Application Settings of the App Service and not the merged results of combining with web.config.
No Azure API will return values that include settings that come from your web.config file.
The only way to get this is to ask the config system within your own runtime. e.g. Use code along these lines:
foreach (string name in ConfigurationManager.AppSettings)
{
string val = ConfigurationManager.AppSettings[name];
...
}
foreach (ConnectionStringSettings settings in ConfigurationManager.ConnectionStrings)
{
string connStr = settings.ConnectionString;
string provider = settings.ProviderName;
...
}
This will give you the effective values that are applied to your app.
You may also use the following blades in Azure Portal (under Development Tools section):
Console
In order to see the file, you may use type command, e.g.:
type web.config
Advanced Tools
This points to the Kudu service.
You may see files deployed when navigating to Debug Console > Choose either CMD or PowerShell. Then navigate to your config directory (e.g. site/wwwroot) and choose to either download or edit file.
App Service Editor
App Service Editor is a relatively new tool in Azure toolset. Default view is a list of files, so you can browse all hosted files, including configuration ones.
You can view all of your runtime appSettings, connection strings and environment variables (and more..) using azure KUDU SCM. if your application address is "https://app_name.azurewebsites.net" you can access it in the address "https://app_name.scm.azurewebsites.net" or from azure portal
With kudo REST API, you can get the settings, delete or post them in this address https://app_name.scm.azurewebsites.net/api/settings
kudo wiki
I created an Azure Function App in Visual Studio 2015. The App has a trigger for service bus queues. The app works perfectly when I run it locally. It is able to read the data from the Service Bus queue (configured via a variable named AzureSBConnection) and log it in my database.
But it gives me the following error when deployed in Azure:
Function ($ServiceBusQueueTriggerFunction) Error: Microsoft.Azure.WebJobs.Host: Error indexing method 'Functions.ServiceBusQueueTriggerFunction'. Microsoft.Azure.WebJobs.ServiceBus: Microsoft Azure WebJobs SDK ServiceBus connection string 'AzureWebJobsAzureSBConnection' is missing or empty.
Note that my connection is called AzureSBConnection and not AzureWebJobsAzureSBConnection. Also, the connection works locally. And finally, the deployed file looks exactly like the local file.
The Visual Studio structure looks like the following:
The function.json file has a bunch of settings as shown below:
Then in the Appsettings.json file, I have the following:
For deploying, I FTPed the files to the D:\home\site\wwwroot location for my Function App in Azure. The final structure in Kudu looks like:
And if I go inside my function folder:
Here is the deployed function.json:
And here is the deployed appsettings:
The deployed json files are exactly the same as the local files. But the deployed version is erroring out because of the missing AzureWebJobsAzureSBConnection. What am I doing wrong?
Only environment variables are supported for app settings and connection strings.
You need to make sure that the environment variable AzureWebJobsAzureSBConnection is set on your Function's app settings in the portal:
and then once there, you need to add the AzureWebJobsAzureSBConnection variable with the proper connection string:
and then you can access this via code by:
Environment.GetEnvironmentVariable(name, EnvironmentVariableTarget.Process);
This will obtain the value from either the appsettings.json or the environment variable depending on where the function is being executed from, (local debugging or deployed on Azure)
It is able to read the data from the Service Bus queue (configured via a variable named AzureSBConnection) But it gives me the following error when deployed in Azure:
After you deployed your application to Azure Function, your application will read the connection string from environment setting. Currently, connection settings in appsettings.json will not update environment setting automatically. We could click [Configure app settings] button as #flyte mentioned to check whether the connection string is configured successfully. If not, you could add it manually in app setting box.
Note that my connection is called AzureSBConnection and not AzureWebJobsAzureSBConnection
Please go to [Integrate] page to check whether the [Service Bus connection] is configured successfully. If not, you could reset it by clicking the [new] link.