Self-Hosted Main

I don't track their performance, I just track if they're up or down.

I use uptimekuma running on a free tier of fly.io so I can tell if my cluster had a catastrophic failure. There's no point in the alerting system running on the same system.

Zabbix for hardware, certificate monitoring

Prometheus for service monitoring (e.g how many are actually using my Jellyfin server, so i know if I need to scale etc.)

Observium..

If it's just one server, Netdata is a better option..

First for PRTG.

Nagios for service/QOS, Grafana for dashboarding for some items more specific. Planning on eventually switching to zabbix but nagios is so simple that i feel having a hard time justifying moving over 400 monitored services to it

If its down, I assume performance is bad

Quick checks: Proxmox dashboard, htop or glances, Portainer

Extensive monitoring: Prometheus (node-exporter), Rsyslog server, Loki, Grafana, Uptime Kuma, Alertmanager (via Gotify)

I literally tried all. Nagios is the best one

Uptime Kuma for my services Netdata + Prometheus + Grafana for server health (alerts and visualization)

Prometheus and grafana

I use net data for both dashboards and alerts. Works great and easy to setup.

Its not well liked but I use nagios core for alerts and jump to grafana which has data in prometheus, influxdb, and mysql backend for trends like cpu usage hard drive Temps etc.

easiest by far to set up, plenty of metrics

https://www.netdata.cloud/

Oh lord, I have so much info to give ! For the setup, it's running on kubernetes 1.28.2, so YMMV. My monitoring stack is :

• Grafana -- Dashboards
• Alertmanager -- Alerting
• Prometheus -- Time series Database
• Loki -- Logs database
• Promtail -- Log collector
• Mimir -- Long term metrics&logs storage
• Tempo -- Datadog APM, but with Grafana, allows you to track requests through a network of services, invaluable to link your reverse proxy, to your apps, to your SSO to your database...
• SMTP Relay -- A homemade SMTP relay that eases setting up mail alerts, allows me to push mail through mailjet using my domain
• Node-exporter -- exports metrics for the server
• Exportarr -- exports metrics for sonarr/radarr etc
• pihole-exporter -- exports pihole metrics for prometheus scraping
• smart-exporter -- exports S.M.A.R.T metrics (for HDD health)
• ntfy -- for notifications to my phone (other than mail)

The rest is pretty much the same, if the service exports prometheus metrics by default, I use that, and write a ServiceMonitor and a Service manifest for that, it usually looks like that

apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: traefik
  labels:
    app.kubernetes.io/component: traefik
    app.kubernetes.io/instance: traefik
    app.kubernetes.io/managed-by: kustomize
    app.kubernetes.io/name: traefik
    app.kubernetes.io/part-of: traefik
spec:
  selector:
    matchLabels:
      app.kubernetes.io/name: traefik-metrics
  endpoints:
  - port: metrics
    interval: 30s
    path: /metrics
    scheme: http
    tlsConfig:
      insecureSkipVerify: true
  namespaceSelector:
    matchNames:
    - traefik

apiVersion: v1
kind: Service
metadata:
  name: traefik-metrics
  namespace: traefik
  labels:
    app.kubernetes.io/name: traefik-metrics
spec:
  type: ClusterIP
  ports:
    - protocol: TCP
      name: metrics
      port: 8082
  selector:
    app.kubernetes.io/name: traefik

If the app doesn't include a prometheus endpoint, I just find an existing exporter for that app, most popular ones have that, and ready made grafana dashboards.

For alerting, I create PrometheusRule object with the prometheus query and the message to alert me (depending on the severity, it's either a mail for med-low severity incidents, phone notification for high sev). I try to keep mails / notifications to a minimum, just alerts on load, CPU, RAM, and potential SMART errors as well give me alerts.

Use PRTG, up until 100 sensors it’s free.

Best Monitoring tool ever ☝🏻🙂

None. There is no need for a performance monitor for my home lab. I just have an alert if one of my main three services is down. That is all i need.

Glances, uptime-kuma, and back end script that reboots service if down. If it doesn't work I get a notification via gotify. Simple and sweet

Netdata, monitoring a few thousand servers (virtual) that way.

Girlfriend first Alert Manager second. Girlfriend is usually faster.

I just check the proxmox dashboard every now and then. Honestly if everything is working I'm not too worried about exact ram levels at any given moment

Uptime Kuma and Grafana. Uptime Kuna to monitor if a service is up and running and Grafana to monitor the host like CPU, RAM, SSD usage etc.

Nobody mentioned htop 🤔

Just to make sure: You are aware that a search option here exists, yes? And you keep refusing to use it for whatever reason?

I use checkmk with notifications to a telegram bot