Aquilenet

# Prometheus-grafana

**[Prometheus](https://prometheus.io/)** est sous licence **[Apache 2](https://www.apache.org/licenses/LICENSE-2.0)** . Les sources sont disponibles sous **[github](https://github.com/prometheus)** .

Prometheus existe aussi sous la forme de paquets pour debian10, ce que nous allons utiliser.

## Serveur Prometheus

### Installation

**/etc/apt/sources.list**

```

deb https://packages.grafana.com/enterprise/deb stable main

```

Il est nécessaire d'ajouter la clef gpg pour ce dépôt.

```

gpg --receive-key 8C8C34C524098CB6

apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 8C8C34C524098CB6

apt update

apt install grafana-enterprise

```

### Configuration

La configuration se fait via un fichier yaml. Ici un exemple.

**/etc/prometheus/prometheus.yml**

```

# Sample config for Prometheus.

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.

  # scrape_timeout is set to the global default (10s).

  # Attach these labels to any time series or alerts when communicating with

  # external systems (federation, remote storage, Alertmanager).

  external_labels:

      monitor: 'example'

# Alertmanager configuration

alerting:

  alertmanagers:

  - static_configs:

    - targets: ['localhost: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.

scrape_configs:

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

  - job_name: 'prometheus'

    # Override the global default and scrape targets from this job every 5 seconds.

    scrape_interval: 5s

    scrape_timeout: 5s

    # metrics_path defaults to '/metrics'

    # scheme defaults to 'http'.

    static_configs:

      - targets: ['localhost:9090']

  - job_name: Mes_machines_virtuelles

    static_configs:

      - targets: 

        - 'domaine.associe.ou.adresse.ip:9100'

        - 'XXX.XXX.XXX.XXX:9100'

  - job_name: noeud_pour_autres_machines

    # If prometheus-node-exporter is installed, grab stats about the local

    # machine by default.

    static_configs:

        # première syntaxe yaml

        #- targets: ['localhost:9100']

        # deuxième syntaxe yaml

      - targets: 

        - 'localhost:9100' # la machine qui s'écoute

        - 'XXX.XXX.XXX.XXX:9100'

        - 'YYY.YYY.YYY.YYY:9100'

```

### Lancement

```

systemctl start grafana-server

```

Ou pour relancer

```

systemctl reload prometheus

```