Monitor your Nextcloud logs for suspicious activities with Grafana Loki
Relatively unknown are Nextcloud's audit logs. If you enable them, the admin has the possibility to check his instance for suspicious activities.
Inject Nextcloud secrets via environment variables
Few know that you can also configure Nextcloud via environment variables. With this possibility you can save the storage of passwords in the Nextcloud config.php.
Speed up Nextcloud preview generation with imaginary
One problem with PHP web applications is that they are usually slow. Imaginary is an external application written in GO that speeds up the creation of previews and thumbnails in Nextcloud.
Regularly check your Nextcloud instance for vulnerabilities
Nextcloud offers a tool at scan.nextcloud.com with which you can check your Nextcloud instance for known vulnerabilities. With the following script, this can also be conveniently brought into icinga2.
Nextcloud's high performance backend behind a Sophos reverse proxy
Nextcloud's High Performance Backend accelerates messaging on larger systems. Connected clients no longer need to poll to see changes to files. Instead, notifications actively inform applications of file changes.