To install Redis on Plesk Debian/Ubuntu server, run
apt install -y redis-server redis-tools
Enable and restart redis-server
systemctl enable redis-server systemctl restart redis-server
Now install PHP Modules
apt install -y plesk-php70-redis plesk-php71-redis plesk-php72-redis plesk-php73-redis plesk-php74-redis
After installing, you will see redis listed in phpinfo() page.
