I recently needed to update the SSL certificate on EnvelopeBudget.com. Below are the notes I took in the process for when I need to do it again in 5 years.
Purchase an SSL certificate. I bought a cheap one from namecheap.com.
Create CSR (certificate signing request)
openssl req -newkey rsa:2048 -nodes -keyout envelopebudget.com.key -out envelopebudget.com.csr
Then print it out and copy it to your clipboard.
Paste CSR into the namecheap admin area
Wait for approval email… submit approval.
SSL cert will be emailed to you in zip file \”envelopebudget_com.zip\”
Upload the zip file to your server using scp.
scp envelopebudget_com.zip firstname.lastname@example.org:~
Unzip the file on your server.
Concatenate the primary certificates.
cat envelopebudget_com.crt COMODORSADomainValidationSecureServerCA.crt COMODORSAAddTrustCA.crt AddTrustExternalCARoot.crt >> ssl-bundle.crt
Move all certs to /etc/ssl/localcerts.
sudo mkdir /etc/ssl/localcerts sudo mv *.crt *.key *.csr *.zip /etc/ssl/localcerts
Make sure the following is in nginx. (See Setting up a Django Server with PostgreSQL, Nginx, Celery & RabbitMQ)
ssl on; ssl_certificate /etc/ssl/localcerts/ssl-bundle.crt; ssl_certificate_key /etc/ssl/localcerts/envelopebudget.com.key; ssl_protocols SSLv3 TLSv1 TLSv1.1 TLSv1.2;