I run a SaaS with multiple subdomains and with the option for customers to use their own domains too.
This means, that we host eg:
customer1.ourdomain.com
customer2.ourdomain.com
www.customer3.com
www.customer4.com
When creating a certificate through ACM, I have to confirm the new certificate for all domains, that's fair, as I can live with that.
But our customers can't live with confirming their domain everytime we add a new certificate (since we still can't update/add domains to an existing cert.).
My question is, can I, somehow intercept the mails that are being send out, when the domains has to be confirmed?
Of cause I can't always get their mails, but just for eg. hostmaster#customer3.com
The domains can be moved to Route 53 if needed, the customers usually have had them in a long time, hosted somewhere else. We usually just make a CNAME to our ELB.
How do other people deal with this?
Best regards, thanks in advance
Currently, you have two options here:
Firstly, AWS allows you to configure the base domain name to which you want the validation email to be sent. For instance, you are requesting SSL for subdomains like *.customer1.ourdomain.com or *.customer2.ourdomain.com you can specify ourdomain.com as the validation domain.
Can I configure the email addresses to which the certificate approval
request is sent? No, but you can configure the base domain name to
which you want the validation email to be sent. The base domain name
must be a superdomain of the domain name in the certificate request.
For example, if you want to request a certificate for
server.domain.example.com but want to direct the approval email to
admin#domain.example.com, you can do so using the AWS CLI or API. See
ACM CLI Reference and ACM API Reference for further details.
To enhance this process even further you can try acmagent pip library to automate you SSL confirmation
pip install acmagent
Requesting SSL
$ acmagent request-certificate --domain-name *.dev.example.com --validation-domain example.com
12345678-1234-1234-1234-123456789012
Approving SSL
$ acmagent confirm-certificate --certificate-id 12345678-1234-1234-1234-123456789012
More examples can be found here.
The second option is to create a MX record in the hosted zone pointing to the SES service and use Lambda function to parse the confirmation email body. I found an existing project that looks like is doing this already: aws-acm-certificate-request-approver
Hopefully, that helps.
Related
Apologies on the broad title;my question is mainly around validating domain names in AWS Certificate Manager such that I can get valid ACM going. These are currently in Heroku and need to be migrated into AWS.
The Heroku ACM will validate a custom domain and issue a certificate if the DNS for said custom domain is a CNAME to the Heroku app's main domain. For example, if I have my-heroku-app.com and I make a CNAME from example.com to that then Heroku will successfully generate a cert and I can visit https://example.com with proper TLS. This can be verified with a simple curl -Iv https://example.com which shows a certificate issued by Let's Encrypt.
Conversely the AWS Certificate Manager requires a specific CNAME record and value to be set on a domain in order for it to generate certificates for that domain. Until that happens, I do not see a way to use things like API Gateway or ELB with said domain.
Is there a way I can migrate these domain certificates into AWS Certificate Manager from Heroku, e.g. without having to go through the typical validation process for each one of them? The main Heroku app domain is one which is going to be pointed to AWS via API Gateway and at that point all of those custom domains will fail because they're not registered in AWS API + Certificate Manager.
Conversely the AWS Certificate Manager requires a specific CNAME record and value to be set on a domain in order for it to generate certificates for that domain. Until that happens, I do not see a way to use things like API Gateway or ELB with said domain.
There is absolutely nothing stopping you from creating the ACM validation CNAME records in your DNS service, to complete the creation of the certificate in ACM, while still leaving all your current DNS records in place. The ACM validation record is just a new DNS record, it doesn't replace any of your existing records, and it is only used for validation that you own the domain name, it isn't used for actual routing of any network requests.
Is there a way I can migrate these domain certificates into AWS Certificate Manager from Heroku, e.g. without having to go through the typical validation process for each one of them?
You have to go through the validation for each one, there is no getting around that. You could script it if you have a lot of them.
The main Heroku app domain is one which is going to be pointed to AWS via API Gateway and at that point all of those custom domains will fail because they're not registered in AWS API + Certificate Manager.
This is incorrect. You don't have to "register a domain to AWS Certificate Manager" in order to validate the certificate and get the certificate. ACM isn't validating that you have a domain pointing to an AWS API before it issues you the certificate. It is just validating that you own the domain name, via a new CNAME record that is only used for domain ownership validation.
I suggest you start the certificate creation process in ACM, and look at the CNAME record it asks you to create. You will see that it is totally unrelated to any of your current DNS records, and does not conflict with them.
I created my certificate in AWS ACS, and updated the CN NAME and CN VALUES in google domain. But, still it's saying pending validation. How long does it take for validation. Not sure if am making any mistake could someone please share steps how to have certificates created and used in google domain. I was able to connect from google domains to route53.
Finally was able to resolve it, am using custom ns servers. Instead I have to use default one and give the CNAME there and AWS validated the certs within few minutes.
I've used the "validate by email" option for getting an ACM certificate for my website (We can call it example.com).
In the details section of the validation status, I see that an email was sent to:
webmaster#example.com
postmaster#example.com
hostmaster#example.com
admin#example.com
administrator#example.com
The problem is that I have no idea where this emails are going, or how to check them. I never remember setting up any sort of email associated with my domain but I do have my domain on a hosted zone using Route53.
Amazon's documentation fails to provide any help on this. I am wanting to actually access the emails that were sent from ACM (are they in S3? Route53? Do I need command-line?).
I'm following the serverless-stack guide and have a website hosted in an Amazon S3 bucket. I purchased a domain using GoDaddy and I have set up cloudfront to work with this bucket, then have used AWS certificate manager to generate SSL certificates for my domain (both www.my_domain.com and my_domain.com).
In GoDaddy I then configured DNS forwarding to point to my cloudfront resource.
This all works nicely, and if I go to my_domain.com in a browser then I see my website.
However, I can't get SSL working. If I go to the https:// version of my website then I see a not secure error in the chrome address bar which shows a certificate pointing to shortener.secureserver.net rather than my own website.
Could someone point me at a way around this? Looking through S.E. and using google it seems that Amazon's route53 might be able to help, but I can't figure out how to do this.
Thanks!
(edit) To make things more clear, this is what I see in Chrome if I connect to https://my_website.com or to https://www.my_website.com
The warning message:
The certificate details:
What I do not understand is why, after configuring an AWS certificate for my domain, I see a certificate for shortner.secureserver.com rather than a certificate for my_website.com.
Go daddy has problems and does not redirect to https, There are two ways, the first is to change domain registrar and the second is the easiest, which is: Create a hosted zone on AWS router 53 with your domain name
Create 2 type A records, one for the root (of your domain) and one for www that point to your cloudfront. Router 53 allows you to create a type A record without having an IP, because it directly points to a cloudfront instance that you indicate, that's the best
Then in go daddy it gives you the option to change name servers and puts the ones assigned by aws in hosted zone with the record that says NS and you put those 4 in Godaddy, replacing the ones that had
Note: SAVE THE NAME SERVERS THAT YOU HAVE IN GO DADDY BEFORE REPLACING THEM, IN CASE YOU HAVE ANY PROBLEM, YOU CAN REPLACE THEM AGAIN
You have to wait at least a few hours until all the name servers are updated, you can use the who.is page to see if the DNS have already been updated with those of aws.
It turns out that this is not possible with GoDaddy. If anyone else reading this has a similar problem, only current solution is to cancel your domain registration and register with someone else.
(edit) As #aavrug mentions in their comment, Amazon now have a guide for this.
When you defined your CloudFront you can defined whether you want to use, and you can choose HTTPS only. In this case HTTP requests will be automatically redirected to HTTPS. Have in mind CloudFront changes may take a while to be replicated and your browser cache it as well, so the best way is to make a change, wait for the deployment and then check it in a new cognito browser.
It goes without saying that your certificate must be valid and verified as well.
It might be something wrong with your certificate or with your domain.
If you serving your content over HTTPS you must provide a SSL Certificate in Cloudfront. Have you done that?
Have you added your domain on Alternative Domain Names (CNAMEs)?
Please have a look on the image below:
-> AWS provides Free SSL Certificates to be used with Cloudfront, so you might want to use it (easier than you import your SSL from go daddy).
You can create a free SSL certificate on AWS and easily attach it to your cloudfront distribution.
-> You can also transfer your domains to AWS Route53. It is easy to integrate with any AWS Service and easy to use/maintain :)
I wrote a complete guide on my blog telling how you can add Custom SSL and attach custom domain to Cloudfront distribution, it might be useful :)
https://lucasfsantos.com/posts/deploy-react-angular-cloudfront/
I'm trying to set a CNAME on Cloudflare to point to an Amazon API Gateway endpoint. The CNAME is for use when referring to one of my subdomains. The gateway in turn points to the IP of a server on DigitalOcean. I am very new to Amazon web services and would appreciate if someone could give me an overview of the correct configuration for the DNS, Amazon Gateway and Cloudfront (which I think is needed to expose the gateway to DNS servers external to Amazon). Any help would be much appreciated.
UPDATE
I've been going at this for a while now and not making much progress. Does anyone have an idea if this is a viable approach or how else it might be done?
UPDATE2
I thought I needed to add the CNAME record to cloudFlare and just ended up in a redirect loop, observed by:
curl -L -i -v https://sub.mydomain.com/
NOTE: It seems this method doesn't work anymore as AWS now only accepts certificates from certain authorities. I haven't tested it myself, but the answer by Gunar looks promising.
There are several reasons why it doens't work to simply point Cloudflare at your API Gateway domain and call it a day:
API Gateway uses shared hosting so it uses the domain name to figure out what API to send requests to. It has no way of knowing that api.yourdomain.com belongs to your API.
API Gateway requires that you use https, but the certificate that it uses is only valid for the default domain.
There is a solution, however. Here are the steps that I followed when I recently set this up:
Generate an origin certificate from the crypto tab of the Cloudflare dashboard.
Import the certificate to AWS Certificate manager in the us-east-1 region, even if your API is located in a different region. If you are prompted for the certificate chain you can copy it from here.
Add your custom domain in the API Gateway console and select the certificate you just added. Check the AWS support article for more information on how to do this.
It usually takes about 45 minutes for the custom domain to finish initializing. Once it's done it will give you a new Cloudfront URL. Go ahead and make sure your API still works through this new URL.
Go to the Cloudflare DNS tab and setup a CNAME record pointing to Cloudfront URL you just created.
Switch to the crypto tab and set your SSL mode to "Full (Strict)". If you skip this step you'll get a redirect loop.
That's it. Enjoy your new highly available API served from your custom domain!
Set up Amazon's API Gateway Custom Domain with CloudFlare
In your AWS management console go to the API Gateway service and select Custom Domain Names from the left menu.
Click the Create button.
Log into CloudFlare, select your domain and open the Crypto tab
Go to SSL and set your SSL mode to "Full (Strict)" to avoid a redirect loop.
Go to Origin Certificates and click Create Certificate
Let CloudFlare generate a private key and a CSR and choose RSA as the private key type
Make sure that the hostname for your custom API domain is covered. (e.g. api.mydomain.com. You can specifically configure this custom domain or use a wildcard such as *.mydomain.com as is configured by default.
Pick PEM as the key format which is selected by default.
In AWS switch to region US-EAST-1 and goto the Certificate Manager.
Click Import a Certificate.
Copy the certificate body from your CloudFlare certificate to Certificate body to the configuration of the custom domain in the AWS Management Console.
Copy the Private key to the certificate private key field in the console
In the certificate chain copy the Cloudflare Origin CA - RSA Root which can be found here.
Enter your custom domain name in the AWS console and a name for your certificate
Now the custom domain name will be created in AWS CloudFront. It can take up to an hour before the domain becomes active.
The next thing you need to do is set up the mappings of the custom domain in the AWS Console.
The final step is to create a new CNAME Record in CloudFlare to link your domain to the CloudFront url. When you open the settings page of your custom domain in the AWS console copy the Distribution domain name. This is the domain you need to use when creating the new CNAME Record.
Source
I couldn't get any of the other answers to work. So I ended up having AWS generate the certificate instead of using a Cloudflare Origin one. That's because AWS wouldn't accept my Cloudflare certificate, even when the chain was provided. I couldn't see Cloudflare in Mozilla's Certificate Authority list (which is what AWS relies on, according to the docs) so I guess that makes sense.
Here's the outline of my solution:
Create AWS Route53 Zone
Create AWS ACM Certificate (must be in us-east-1) with validation method DNS
Create Cloudflare DNS Record with the output of (2)
Create AWS API Gateway Domain Name
Create Cloudflare DNS CNAME Record pointing '#' (root domain) to the Cloudfront domain name from step (4)
Create AWS API Gateway Base Path Mapping
This should be roughly it. May this help someone. Feel free to ask questions.
Both existing answers to this question are correct, but if the issue still persists even after following these directions perfectly, try going into the API Gateway settings, navigate to "Custom Domain Name" and configure the Base Path Mappings.
This was the missing step that solved all my problems.