An SMTP gateway for Apprise notifications - works in tandem with Apprise so that now your applications do not even have to know about apprise in any way.

Simply point them to the mailrise gateway and send an email (which is often natively supported, especially by legacy apps). Mailrise receives it, translates it into something apprise understands and forwards it to Apprise which then does its usual thing and puts it into one of the dozens of programs it supports. Neat!

Using telegraf to get metric data from Nextcloud itself into InfluxDB, from where you can then visualize it in e.g. Grafana.

Grafana is an amazing visualization tool used mainly by IT teams to monitor their infrastructure. As it’s open-source there’s huge contribution from the community on both datasource and panel making…

In this article, we will look at one of the many ways to keep an application behaviour closely under watch. In this case we are going to look at Monitoring.

Full in-depth example of application monitoring, from the code itself to its interaction on the cli, to network setup, to prometheus monitoring to grafana visualization. Well written!

Docker Swarm instrumentation with Prometheus, Grafana, cAdvisor, Node Exporter and Alert Manager - stefanprodan

Docker compose for Grafana Loki, like Prometheus but for logs - swarmstack

Explanations for logging containers which do not write to stdout/stderr

Explanations for setting up new driver and flushing nodes

A Docker swarm-based starting point for operating highly-available containerized applications. - swarmstack

This guide introduces Prometheus and outlines how to integrate metrics into an existing applications for both operational and business insights with Docker

A Docker Swarm Stack for monitoring Traefik with Promethues and Grafana - vegasbrianc

Netstat seems really useful