jleony/nanoreth
1
0
Fork 0
mirror of https://github.com/hl-archive-node/nanoreth.git synced 2025-12-06 10:59:55 +00:00
Code Issues Packages Projects Releases Wiki Activity

docs: prometheus defaults to target itself at 9090 (#3792)

Browse Source 
Co-authored-by: N <mail@nuhhtyy.xyz>
This commit is contained in:
N
2023-07-20 16:24:43 -04:00
committed by GitHub
parent fb2d0a22f6
commit 8720a5189b
1 changed files with 10 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
book/run/observability.md
View File

@ -43,11 +43,19 @@ brew services start prometheus
brew services start grafana
```
This will start a Prometheus service which by default scrapes the metrics exposed at `localhost:9001`. If you launched reth with a different `--metrics` endpoint, you can change the Prometheus config file at `/usr/local/etc/prometheus/prometheus.yml` to point to the correct endpoint, and then restart the Prometheus service. You can also stop the service and launch Prometheus with a custom `prometheus.yml` like the one provided under [`etc/prometheus/prometheus.yml`](https://github.com/paradigmxyz/reth/blob/main/etc/prometheus/prometheus.yml) in this repo.
This will start a Prometheus service which [by default scrapes itself about the current instance](https://prometheus.io/docs/introduction/first_steps/#:~:text=The%20job%20contains%20a%20single,%3A%2F%2Flocalhost%3A9090%2Fmetrics.). So you'll need to change its config to hit your Reth nodes metrics endpoint at `localhost:9001` which you set using the `--metrics` flag.
You can find an example config for the Prometheus service in the repo here: [`etc/prometheus/prometheus.yml`](https://github.com/paradigmxyz/reth/blob/main/etc/prometheus/prometheus.yml)
Depending on your installation you may find the config for your Prometheus service at:
- OSX: `/opt/homebrew/etc/prometheus.yml`
- Linuxbrew: `/home/linuxbrew/.linuxbrew/etc/prometheus.yml`
- Others: `/usr/local/etc/prometheus/prometheus.yml`
Next, open up "localhost:3000" in your browser, which is the default URL for Grafana. Here, "admin" is the default for both the username and password.
Once you've logged in, click on the gear icon in the lower left, and select "Data Sources". Click on "Add data source", and select "Prometheus" as the type. In the HTTP URL field, enter `http://localhost:9090`, this is the default endpoint for the Prometheus scrape endpoint. Finally, click "Save & Test".
Once you've logged in, click on the gear icon in the lower left, and select "Data Sources". Click on "Add data source", and select "Prometheus" as the type. In the HTTP URL field, enter `http://localhost:9090`. Finally, click "Save & Test".
As this might be a point of confusion, `localhost:9001`, which we supplied to `--metrics`, is the endpoint that Reth exposes, from which Prometheus collects metrics. Prometheus then exposes `localhost:9090` (by default) for other services (such as Grafana) to consume Prometheus metrics.