# Node Monitoring with Prometheus

## Node Monitoring with Prometheus

```bash
mainnet-config.json
```

```bash
nano mainnet-config.json
```

### In this file search for

"hasPrometheus": \[ "127.0.0.1", 12798 ],

## Replace the IP address 127.0.0.1 with 0.0.0.0 to allow listening for external connections.

It should look like this afterwards... "hasPrometheus": \[ "0.0.0.0, 12798 ],

```bash
cd ~
mkdir Downloads
cd Downloads
```

```bash
wget https://github.com/prometheus/node_exporter/releases/download/v1.0.1/node_exporter-1.0.1.linux-amd64.tar.gz
tar xvfz node_exporter-1.0.1.linux-amd64.tar.gz
rm node_exporter-1.0.1.linux-amd64.tar.gz
cd node_exporter-1.0.1.linux-amd64
```

```bash
sudo ufw allow proto tcp from IP.OF.MONITORING.SERVER to any port 9100
sudo ufw allow proto tcp from IP.OF.MONITORING.SERVER to any port 12798
```

```bash
./node_exporter
```

### You are now preparing your monitoring server

```bash
cd ~
mkdir Downloads
cd Downloads
wget https://github.com/prometheus/prometheus/releases/download/v2.22.2/prometheus-2.22.2.linux-amd64.tar.gz
tar xvfz prometheus-2.22.2.linux-amd64.tar.gz
rm prometheus-2.22.2.linux-amd64.tar.gz
cd prometheus-2.22.2.linux-amd64/
```

```bash
nano prometheus.yml
```

### We stick as closely as possible to official cardano documentation. Edit your file to look like this:

### my global config

```bash
global:
scrape_interval: 15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.
external_labels:
monitor: 'codelab-monitor'
```

### scrape\_timeout is set to the global default (10s).

### Alertmanager configuration

```bash
alerting:
alertmanagers:
- static_configs:
- targets:
```

### - alertmanager:9093

### Load rules once and periodically evaluate them according to the global 'evaluation\_interval'.

rule\_files:

### - "first\_rules.yml"

### - "second\_rules.yml"

### A scrape configuration containing exactly one endpoint to scrape:

### Here it's Prometheus itself.

### The job name is added as a label `job=` to any timeseries scraped from this config.

Please edit this one before pressing enter.

```bash
scrape_configs:
- job_name: 'cardano_relay1'
scrape_interval: 5s
static_configs:
- targets: ['IP.OF.YOUR.RELAY1:12798']
- job_name: 'node_relay1' 
scrape_interval: 5s
static_configs:
- targets: ['IP.OF.YOUR.RELAY1:9100']
```

### Now for your second relay remember please edit this.

```bash
- job_name: 'cardano_relay2'e
scrape_interval: 5s
static_configs:
- targets: ['IP.OF.YOUR.RELAY2:12798']
- job_name: 'node_relay2' 
scrape_interval: 5s
static_configs:
- targets: ['IP.OF.YOUR.RELAY2:9100']
```

### Please edit

```bash
- job_name: 'cardano_block'
scrape_interval: 5s
static_configs:
- targets: ['IP.OF.YOUR.BLOCKPRODUCER:12798']
- job_name: 'node_relay2' 
scrape_interval: 5s
static_configs:
- targets: ['IP.OF.YOUR.BLOCKPRODUCER:9100']
```

### Thereafter, still on your monitoring server, you need to open two ports so that you can access the statistics in your browser and from any device you want.

```bash
sudo ufw allow proto tcp from any to any port 3000
sudo ufw allow proto tcp from any to any port 9090
```

{% hint style="info" %}
Recap-Port 3000 is used by Grafana. After completing the setup you should be able to view the dashboard of Grafana from any client by opening IP.FROM.MONITORING.SERVER:3000 in your browser. Port 9090 is used by Prometheus. After completing the setup you should be able to view prometheus from any client by opening IP.FROM.MONITORING.SERVER:9090 in your brows
{% endhint %}

```bash
./prometheus --config.file=prometheus.yml
```

In your client browser, open IP.FROM.MONITORING.SERVER:9090. You should see the landing page of prometheus. Click on Status -> Targets to view your nodes. The state of all your node jobs should be "up"

When prometheus is working, you can continue with the next step: download and install grafana and start it.

```bash
cd ~/Downloads
wget https://dl.grafana.com/oss/release/grafana-7.3.2.linux-amd64.tar.gz
tar -zxvf grafana-7.3.2.linux-amd64.tar.gz
rm grafana-7.3.2.linux-amd64.tar.gz
cd grafana-7.3.2
cd bin
./grafana-server
```

```bash
In the next step you need to add prometheus as data source. Click on:
```

![image](https://user-images.githubusercontent.com/73615683/134784052-d363489a-e919-46e9-ad23-5bc3a658d707.png)

```bash
In the next screen click on prometheus
```

![image](https://user-images.githubusercontent.com/73615683/134784057-885e1f5f-5c67-406a-9980-d07e11bb46e4.png)

```bash
In the next step, fill out the form as below. Please be careful: prometheus must be written lowercase! Otherwise your dashboard won't work!
```

![image](https://user-images.githubusercontent.com/73615683/134784067-7932c965-2acd-4d6b-b763-46694860c6a1.png)

```bash
In the next step, we need to import the precombiled dashboard of IOHK.
Copy cardano-application-dashboard-v2.json from the cardano-ops repository to your clipboard.
In grafana, in the left menu, click on Dashboards -> Manage.
```

![image](https://user-images.githubusercontent.com/73615683/134784082-111a3bcf-20be-49a6-913e-63dba902e2de.png)

```bash
In the next page, at the top right corner, click on Import and paste your clipboard to the textarea appearing in the next screen..
```

![image](https://user-images.githubusercontent.com/73615683/134784114-054428db-a754-4f1d-adb6-6a00d525357f.png)

```bash
Click on Load.
Go back to your welcome screen of Grafana. You should now be able to open your metrics by clicking Cardano: Application metrics v2.
```

![image](https://user-images.githubusercontent.com/73615683/134784134-85ba2a27-1da7-46f2-ab09-e00abe7fbf39.png)

#### That is all that I have for you now good luck.

link:<https://www.cardanocafe.org/blog/knowledge-base-cardano/how-to-setup-prometheus-grafana-monitor-cardano-nodes> This is where I got my information