The Azure Portal has changed how they issue certificates. I have not been able to figure out how to secure the www of my app service domain name. I was able to apply a new cert to the root domain jasonrsmithmusic.com but not www.jasonrsmithmusic.com with the following error:
Error adding managed certificate: Properties.CanonicalName is invalid.
Current CNAME records of the hostname www.jasonrsmithmusic.com is
jasonrsmithmusic.com
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Update: Made progress based on an answer below but the cert is still listed as invalid.
I tried to reproduce the same in my environment added www.subdomain successfully.
Note: To map a subdomain www.jasonrsmithmusic.com ensure you should use A record instead of CNAME record like below.
To resolve this issue, you need to add a new custom domain name along with www.jasonrsmithmusic.com I have one previous custom domain name as travwebapp.com I use this custom domain as www.travwebapp.com like below.
And added a service managed certificate.
To know more in detail please check this reference
Map existing custom DNS name - Azure App Service | Microsoft Learn
Add and manage TLS/SSL certificates - Azure App Service | Microsoft Learn
Related
This MS docs page describes purports to describe how to migrate a domain name that is currently being used on an active site, to a different site hosted on Azure App Service with no downtime, but it seems to me that key information is missing.
It describes how to add a domain verification id TXT record to the domain which then enables you to assign it to the App Service site as a custom domain. But in order for the transfer of the domain from the old site to the new site to occur with no downtime when you update the A record IP address you still need to secure the new custom domain binding on the App Service, otherwise no browser will load it anyway.
But in the Azure Portal when you go to TLS/SSL Settings -> Private Key Certificates -> Create App Service Managed Certifcate and attempt to create a certificate for the unsecured new binding, the dialog displays the following error:
Hostname not eligible for App Service Managed Certificates creation.
Ensure that your domain your-old-website.com has an active CNAME record
which is set to your-app-name-here.azurewebsites.net.
So how do I add a CNAME record to an an existing domain currently serving a different active website in such a way that satisfies Azure's prerequisities to create a managed certificate, but without breaking DNS resolution for either old site or the new site?
I have an Azure web app to which I have mapped a custom domain from another registrar. The root domain works fine and is secured with a (free) Azure SSL cert. I have not been able to get the www. subdomain to work. (It is also secured with an Azure SSL cert.)
I have followed these three articles that detail the method to Map an existing custom DNS name to Azure App Service, Add a TLS/SSL certificate in Azure App Service, and Secure a custom DNS name with a TLS/SSL binding in Azure App Service.
When I browse to the example web app, astroguru.com, it displays a simple blazor server starter page as it should. If I browse to www.astroguru.com, I get a page not found with info icon in the address bar that says the site is not secure, as shown below:
Below are the DNS records that I have created exactly as described in the first article ref'd above, which include (and see image below):
an A record pointing to the IP address of the web service.
a TXT record containing the verification ID
a CNAME record for the www subdomain that the tutorials say must
point to the original site name (e.g. astroguru.azurewebsites.net)
along with another TXT record with the hostname asuid.www and the
same verification ID.
The image below shows the two secured URLs from the Azure portal.
The image below shows the two private key certs in the Azure portal that secure the two URLs above:
Can someone tell me what I've done wrong here?
Had to recreate the certificate and rebind.
I currently have an Azure domain with a website, the domain has the name aaa-aaa.azurewebsites.net
I need to create a subdomain of the style login.aaa-aaa-aaa.azurewebsites.net, which at first will point to aaa-aaa.azurewebsites.net but later I want it to point to a different domain.
I have tried to create the subdomain through the Azure console, entering App Service and then Custom Domains but I get the error:
"Domain ownership
To verify domain ownership create CNAME and TXT record with your DNS provider using the configuration below, and replace {subdomain} with value of subdomain".
I have been reviewing documentation on the internet and in the DNS zone section I have created a new zone and I have introduced the information that appears in the Custom Domains section as the guide says: https://rmiravalles.com/2020/08/05/creating-dns-records-for-a-web-app/
** What should I do to create this subdomain and its corresponding CNAME in Azure?
** Is it necessary to have a domain of the style aaa.com or could it be done with the one I currently have aaa-aaa.azurewebsites.net?
Thank you very much
[1]: Error creating subdomain: https://i.stack.imgur.com/BQ9Iz.png
[2]: DNSZone configuration: https://i.stack.imgur.com/fanN3.png
You do not own 'azurewebsites.net' (microsoft does) and therefor you can not create subdomains for that domain (others than the ones Microsoft has given to you). You should get your own domain first, than you can create dubdomains in your dns-server
Free managed app service cert creation/generation failing with below CNAME error:
Error:Failed to create App Service Managed Certificate for hostname Subdomain.rootdomain.com. Click here for more details. Error Details: Properties.CanonicalName is invalid. Current CNAME records of the hostname are Subdomain.someotherdomain.com,subdomain.trafficmanager.net,subdomain.azurewebsites.net
I was able to repro and make it work if my CName mapping is via subdomain to my default *.azurewebsites.net.
However, the issue seems to be appearing when my CName points to another subdomain before the default *.azurewebsites.net as seen in error message below:
Any insights on this issue is appreciated?
You are seeing this behavior as it’s not a supported feature in Azure App Services yet.
While generating managed free certificated azure will run certain checks on domain and looks for a valid CName ie, either pointed to “.azurewebsites.net” or “.trafficmanager.net”
In order to solve this problem please follow below steps in order:
Remove Cname Subdomain.someotherdomain.com (sub.devopsauthor.com), make sure there is only
one Cname which is pointed to either “.azurewebsites.net” or
“.trafficmanager.net”
Now attempt to generate the Certificate and bind it to domain.
If you still want the Subdomain.someotherdomain.com after cert
generation, you can readd the Cname.
I recently purchased a new custom domain to use with my App Service. I have done this before without any problems but cannot get this setup. I have tried to set this up via two methods:
1) Add hostname binding within the Custom Domain blade. This fails with an error with no extra details.
Add hostname bindings
2) Add custom domain within the App Service blade
Configure custom domains
This fails on domain ownership and ask me to create a CNAME configuration record.
Add CNAME error
I assume this is also why option 1) fails silently.
I have tried this by entering the Advanced Management Portal on the Custom Domain blade but this does not give me access to add any DNS records, all I can do it edit the Nameservers.
Help !!!! This means I am left with a domain I purchased that I cannot use and I cannot no longer buy this through an external provider so I can setup it up externally from Azure.
You need to update the custom domain so Azure manages the DNS. It can then add the appropriate DNS records when you add bindings.