Debian Upgrade Bookworm To Trixie
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This article contains all problems that I encountered when upgrading Debian from 12/Bookworm to 13/Trixie.
Web Application Using PHP and MariaDB
After upgrade, PHP would not work any more. Installation of package libapache2-mod-php8.4 was required. Then the MariaDB (formerly MySQL) database could not be accessed which could be solved by installing php8.4-mysql.
apt -y install libapache2-mod-php8.4 php8.4-mysql
nginx SSL
nginx -t might print an error message like this one:
unknown directive "ssl" in /etc/nginx/sites-enabled/site:linenr
It's easy to fix: Run
nano /etc/nginx/sites-enabled/site:linenr
Usually in this line you find
listen 443;
Add "ssl" to it:
listen 443 ssl;
Later in the file remove the line
ssl on;