I use some batch scripts in my proxmox installation. They are in cron.hourly and daily checking for virus and ram/CPU load of my LXC containers. An email is send on condition.
What are your tipps or solution without unnecessary load on disc io or CPU time. Lets keep it simple.
Edit: a lot of great input about possible solutions. In addition TIL “that keep it simple” means a lot of different things to people.😉
I used monitorix a long time ago. now netdata.
I use netdata, it’s very good at digesting thousands of metrics to sharing actionable. The cloud portion is proprietary, but you can toggle off the data collection. I did turn on the cloud portion though, I get email notifications when something breaks. Might sound counter to the self hosted mantra, but a self hosted monitoring system isn’t very helpful when your own systems go down.
Regarding your edit: people are answering the question you posed in your post title, not necessarily giving you advice about how you should do it.
I set up custom bash scripts collecting information (df, docker json, smartCTL etc)
Either parse existing json info or assemble json strings and push it to Homeassistant REST api (cron)
In Homeassistant data is turned into sensors and displayed. HA sends messages of sensors fail.
Info served in HA:
- HDD/SSD (size, smartCTL errors, spin up/down, temperature etc)
- Availability/health of docker services
- CPU usage/RAM/temperature
- Network interface/throughput/speed/connections
- fail2ban jails
Trying to keep my servers as barebones as possible. Additional services/apps put strain on CPU/RAM etc. Found out most of data necessary for monitoring is either available (docker json, smartCTL json) or can be easily caught, e.g.
df -Pht ext4 | tail -n +2 | awk '{ print $1}
It was fun learning and defining what must be monitored or not, and building a custom interface in HA.
Thats basically the way I do it.
pvesh get /cluster/resources --output-format json-pretty | jq --arg k "lxc/$container_id" -r 'map(select(.id == $k))[].name, map(select(.id == $k))[].mem, map(select(.id == $k))[].maxmem, map(select(.id == $k))[].cpu')
Example using pvesh in proxmox. The data is available, just have to use it. I also prefer barebone approach.
Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I’ve seen in this thread:
| Fewer Letters | More Letters |
|---|---|
| DNS | Domain Name Service/System |
| HA | Home Assistant automation software |
| ~ | High Availability |
| SSD | Solid State Drive mass storage |
| VPN | Virtual Private Network |
4 acronyms in this thread; the most compressed thread commented on today has 14 acronyms.
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