manually renewing letsencrypt certificates for a migrated server

One of our wordpress web servers running on Ubuntu 22 showed certificate errors - apparently the letsencrypt certificates had not been auto-renewed.

Following

How To Secure Apache with Let's Encrypt on Ubuntu 22.04 | DigitalOcean

sudo apt install certbot python3-certbot-apache

#(was already installed)

sudo apache2ctl configtest

#(Syntax OK)

sudo certbot --apache

#(chose to Expand and replace current certificates for all domains, done.)

Then, I put in a reminder in my google calendar to check if auto-renewal has any problems, one week before expiry 3 months later.