How to install an SSL/TLS certificate on Google App Engine
The instructions below walk you through installing SSL on Google App Engine. If you have not generated your certificate or finished validation yet, see our CSR generation instructions.
What you will need
1. Your server certificate
This is the certificate the certificate authority issued for your domain. It may have been emailed to you. If not, you can download it from your account dashboard by clicking on your order.
2. Your intermediate certificates
These files let devices connecting to your server identify the issuing certificate authority. There may be more than one of them. If your certificate arrived in a ZIP folder, the intermediates — sometimes called the CA bundle — should be in there too. If not, download the right CA bundle for your certificate.
3. Your private key
This file should be on your server, or in your hands if you generated your CSR with a free generator tool.
SSL/TLS certificate installation instructions for Google App Engine
1. Log in to your Google Cloud account at https://cloud.google.com
Go to Products & Services > App Engine
2. In App Engine
Choose SSL Certificates under Settings.
3. In SSL Certificates
Click "Upload a new certificate" and you will be shown the "Add a new SSL certificate" panel.
4. Find your certificate files
Now find your certificate files and the private key you generated with the CSR, then click "Upload" to finish the installation.
You will then see a page with the SSL installation details. Choose the domains you want to protect under "Enable SSL for the following custom domains" and click "Save".
