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Mapping Custom Domains in Google App Engine and Installing SSL Certificate


As you know, Google App Engine (GAE) is a cloud-based web application platform. You must create an App Engine project and a Google cloud account to get started with GAE. Then you can use your domain name to access your GAE project from the Internet. This tutorial will show you how to map your custom domain in Cloud DNS. Install an SSL Certificate in the Google Cloud Platform using LetsEncrypt. SSL Google cloud is the best way to handle the website security.

Google App Engine


You know about the platform’s free custom domain feature if you’re a developer or a small business using Google App Engine. Using this tool, you can set up your domain name (like [yourdomainname.com]) rather than use an IP address in your URLs (for example,

Adding custom domains to Google App Engine is a great way to make your website look more professional and have better SEO results. You can use keywords in the web address instead of numbers or letters only. It also makes it easier for users to remember where they saw something interesting on the Internet. Since they know, they can always get back there by typing in their favourite word(s) into their browser bar. They can come to your website again without searching through directories full of IP addresses. All over again, every time, they want to access another resource online!

This article will show how easy it is:

SSL Certificates are key part of App Engine website security. You need SSL certificate to secure the your App in Web Engine.

Setting Up Your App Engine Project

You need a Google App Engine project to set up your custom domain. From the Google Cloud Console, click on the blue Create Project button at the top of the page and enter a name for your project.

Once you’ve created your project, open it by clicking on its name under PROJECTS in the sidebar on the left-hand side of your screen (Figure 1). It will take you straight to your app engine home page, where you can start configuring and building your web application.

Setting Up Your Domain in Cloud DNS

First, you’ll need to log into Cloud DNS and create a new domain. Here are the steps:

    • Click “Create Domain”.

    • Fill in the required fields (name, TTL, etc.), then click “Create”.

    • Once you’ve created your new domain, it’s time to set up DNS records so that it points to Google Cloud DNS. Follow these steps:

    • Click “Manage DNSSEC signing” on the left-hand side of your screen; this will open a pop-up with some extra settings.

    • Check “Enable automatic generation of KSK”, and then select an end date for your KSK key. We recommend choosing June 2025 since this is when Google plans on deprecating SHA1 signatures. They are switching to newer algorithms like SHA256 or SHA384. Now click “Next” at the bottom right corner of your screen.

    • Choose one or more A records (e.g., www) from under “Name servers” on your screen and click “Add record.”


Know what you’ll need to set up your custom domain in the google app engine

    • Google App Engine. Most people use it for their web applications, but you can also use it to host your public-facing website.

    • Cloud DNS. The service manages your domain name and forwards requests to the right place (i.e., the app engine instance). You’ll need to create an account at one of these providers if you want a custom domain name:

Install an SSL certificate on google cloud

To Install an SSL certificate on google you need following:

    • Private key

    • Certificate signing Request

    • Valid SSL Certificate

    • Pointed custom domain to google app

    • Certificate files

    • Intermediate SSL Certificate Files

    • You need to upload a new certificate on google

    • You need to upload a intermediate certificate files


If you’re looking to set up your own custom domain with Google App Engine, it’s a relatively straightforward process. You’ll need to create a Cloud DNS account and point it at the origin servers for your domain. Then, you’ll need to configure your domain records to point at those servers since HTTPS requests require a certificate issued by an authorized Certificate Authority (CA). You’ll need to purchase one if none of their free options suits your needs. Certificate on google cloud is the must.

You can always hire an expert to help you with SSL Installation from Web Security Experts.