Start monitoring stack components

This page describes how to start each of the monitoring stack components after you install and configure them. The components described here include the Aerospike Prometheus Exporter, Prometheus, and the Grafana server.

On the system where Prometheus is installed, start the Aerospike Prometheus Exporter with the following command:
```
systemctl start aerospike-prometheus-exporter.service
```

Start Prometheus. We recommend running it as a service, though you can also run it as a binary file.

Create a systemd unit file.

Create the file /usr/lib/systemd/system/prometheus.service and include the following content:

# cat /usr/lib/systemd/system/prometheus.service

[Unit]
Description=Prometheus Service
Documentation=https://prometheus.io/docs/introduction/overview/
Wants=network.target
After=network-online.target

[Service]
ExecStart=/usr/local/bin/prometheus --config.file /etc/prometheus/prometheus.yml --storage.tsdb.path /var/lib/prometheus/

[Install]
WantedBy=multi-user.target

Reload daemons with the following command:
```
systemctl daemon-reload
```
Start Prometheus with the following command:
```
systemctl start prometheus.service
```

Assuming the binary is located at /usr/local/bin/prometheus, run the following command:

/usr/local/bin/prometheus --config.file /etc/prometheus/prometheus.yml \
                          --storage.tsdb.path /var/lib/prometheus/

Start the Grafana server with the following command:
```
 systemctl start grafana-server
```