OK, I know, I know, I still have two sites that are on multiuser WordPress (in addition to this site). I've migrated just about everything but two sites. But a good reminder was the JetPack reported the three sites down (the umbrellas sites and the two remaining subsites) on DigitalOcean.
As a reminder the quick debug for this is to:
- First thing I do is a hard reboot. Since I have weekly snapshots, it's kind of for free to do this since these sites really don't change at all.
- That didn't work so time to go in and try to check the services. The most common problem is out of memory errors with mysql, so login and do a
service mysql statusand it is running fine. Huh.
- Then look at Apache2 with
service apache2 statusand I get this strange error saying that a Let's encrypt file names something like
- Come to figure out that in some release of certbot, it now no longer used the -0001, so the trick is to edit the /etc/apache2/sites-enabled/003-one-of-mysites-le-ssl.conf and get rid of that filename extension and all is good.
Then the next thing I discover is that as I've migrated off of multiuser wordpress, I've had a single certificate serving multiple domain names, so for example
site1.com and site2.com. So what if site 2 migrates off. The only fix is that you have to do a
certbot delete -d site1.com and it wipes out the entire certificate and then you recreate it with
certbot run -d site1.com only and this is how you bet rid of site2.
If you don't then on every certbot renew, it will see site2.com and generate an error.