I have one question regarding the azure app service certificate update. I have already a certificate bound to one of the azure web apps. But this certificate is going to expire soon. I have renewed my certificate and uploaded a new version of the certificate. So now I have two different certificates in the app service certificate store.
My question is, what is the best way to switch the certificate for the web app without any downtime?
what is the best way to switch the certificate for the web app without any downtime?
AFAIK, the best way is to turn on automatic renewal of your certificate at any time.
Choose the certificate from the App Service Certificates page.
Then select Auto Renew Settings in the left navigation.
Select ON > Save.
If you have automatic renewal enabled on, certificates will begin renewing 60 days before they expire.
Renew App Service Certificate automatically
Click Sync once the renew operation completes which automatically updates the hostname bindings for the App Service Certificate without causing any downtime to your applications.
Refer to the Renew an expiring certificate of azure app service-SSL for more information.
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My Azure App service is loading a certificate from the Azure Key Vault. I have set cert as auto-renew in key vault. My appservice is loading the new certificate, whenever Keyvault renews the cert.
I know AppService keep syncing with Azure Key Vault in a background process. How does it happen when AppService finds there is a renewed certificate in Key Vault? Does appservice loads new renewed cert in the Current User and restart the AppService?
Thanks
How does it happen when AppService finds there is a renewed certificate in Key Vault?
The Web App service runs a background job that periodically (once a day ) that syncs all App Service certificate. Hence when you rotate or update a certificate, sometimes the application is still retrieving the old certificate and not the newly updated certificate. This is because the job has not run to sync the certificate resource. It will automatically update the hostname bindings for the certificate in App Service within 48 hours.
Does app service loads new renewed cert in the Current User and restart the AppService?
It will automatically updates the certificate in App Service without causing any downtime to your apps.
We are trying to set up an automatic way to update our custom certificates bound to a lot of different hostnames (custom domains) that we use on all of our web apps.
When a renewal is needed we update a new version of the certificate in our key vault on which it will automatic sync with all of the web apps that uses the certificate. This proces works fine in Azure but we still have to update the TLS/SSL bindings in the web app by hand as this will still be bound to the old certificate, even though the new certificate is synced to the web app.
Is there a workaround for this so we don't have to open every web app and change the TLS/SSL binding by hand for each hostname with the renewed certificate?
I have an AppService where the SSL Certificate is getting expired. I have the renewed certificate. Is there a way to upload this through powershell without causing outage?
Also, I intend to automate the entire process for certificate renewal and changing in AppService is this be done through Keyvault?
To upload your renewed certificate and bind it to your app service, you could use this powershell command New-AzureRmWebAppSSLBinding.
For Auto Renew App Service Certificate, you could check it in your App Service Certificate -> Auto Renew Settings -> Auto Renew App Service Certificate, if Auto Renew is on then it will be renewed automatically before it expires, the linked App Service Apps will be moved to the new certificate.
I'm trying to remove a certificate (via the Management Portal) that is due to expire on 16/07/2014 days and I'm getting this error:
The certificate I'm trying to delete was automatically generated 'CN=Windows Azure Tools' and was used for Remote Access.
I also tried to configure the cloud services to use new certificates, but still no success.
Looked at Fiddlers log and indeed there in an internal server error:
My questions are:
Is there any way I can delete this certificate?
If I can't delete it, what happens when it expires?
What I really want to avoid is to have to redeploy the production services because of this certificate.
Florin, you cannot delete a certificate in production use, but you have two options for this issue:
The easiest option is to just ignore it. The RDP cert is only used for password encryption and it doesn't matter if the cert is expired or not since Azure does not check the expiration date when doing the encryption/decryption.
You can upload a new certificate and then modify the RDP configuration to use that new certificate. After this you can delete the old certificate. This is essentially the same process you would use for an HTTPS certificate.
I have a cloud service SAAS application that is running on Azure using https which SSL certificate is expiring soon. I've recently obtained a new SSL certificate that I need to apply to before the expiration date.
Looking up on the web, all I found are articles about how to setup SSL certificate for Azure Cloud Service (i.e. http://www.windowsazure.com/en-us/develop/net/common-tasks/enable-ssl/) and non regarding the renewal process. At this point, I'm thinking it's the same process.
In order to avoid unnecessary issue, I'm looking for confirmation from someone else that might have already done this before and perhaps some pointers on other things that I need to be aware of.
1)You upload the certificate to the Service Certificates section on the Windows Azure Portal - just as you did originally.
2) You modify the Service Configuration file to provide the thumbprint of the new certificate instead of the old one. This causes the certificate to be deployed to each instance.
3) You do an in-place upgrade or (use a VIP Swap) which causes IIS to start using the new certificate.
First you upload the new certificate using the Management Portal - go to Certificates tab of your cloud service.
Then if you believe in in-place reconfiguration (which I don't recommend for this scenario) you can go to Configure tab, scroll down to Certificates, change the thumbprint (you can get it from the Certificates tab) and click Save. Just don't forget to update your .cscfg files so that you have the changes preserved when you redeploy.
If you don't believe in in-place reconfiguration you'll have to change your .cscfg files and deploy your service into staging with the updated .cscfg and then do VIP swap and delete the previous deployment. This is what I recommend for this scenario because should anything go wrong with in-place reconfiguration you can experience service downtime.