How to install Prometheus Server on Centos Linux and Integrate it with Grafana Server

This tutorial helps you to configure Prometheus Server on Centos Linux and integrate it with Grafana as a Data Source.
The following commands has been used under this Tutorial:
wget github.com/pro...
Add Prometheus User
useradd --no-create-home --shell /bin/false prometheus
Create diectory and change ownership
mkdir /etc/prometheus
mkdir /var/lib/prometheus
chown prometheus:prometheus /etc/prometheus
chown prometheus:prometheus /var/lib/prometheus
#Extract Prmetheus file & rename it.
tar -xvzf prometheus-2.8.1.linux-amd64.tar.gz
mv prometheus-2.8.1.linux-amd64 prometheuspackage
Copy “prometheus” and “promtool” binary and change ownership
cp prometheuspackage/prometheus /usr/local/bin/
cp prometheuspackage/promtool /usr/local/bin/
chown prometheus:prometheus /usr/local/bin/prometheus
chown prometheus:prometheus /usr/local/bin/promtool
Copy “consoles” and “console_libraries”
cp -r prometheuspackage/consoles /etc/prometheus
cp -r prometheuspackage/console_libraries /etc/prometheus
chown -R prometheus:prometheus /etc/prometheus/consoles
chown -R prometheus:prometheus /etc/prometheus/console_libraries
Configure Prmetheus
vi /etc/prometheus/prometheus.yml
global:
scrape_interval: 10s
scrape_configs:
job_name: 'prometheus_master'
scrape_interval: 5s
static_configs:
targets: ['SERVER_IP:9090']
Change the ownership
chown prometheus:prometheus /etc/prometheus/prometheus.yml
vi /etc/systemd/system/prometheus.service
[Unit]
Description=Prometheus
Wants=network-online.target
After=network-online.target
[Service]
User=prometheus
Group=prometheus
Type=simple
ExecStart=/usr/local/bin/prometheus \
--config.file /etc/prometheus/prometheus.yml \
--storage.tsdb.path /var/lib/prometheus/ \
--web.console.templates=/etc/prometheus/consoles \
--web.console.libraries=/etc/prometheus/console_libraries
[Install]
WantedBy=multi-user.target
#start service
systemctl daemon-reload
systemctl start prometheus
systemctl status prometheus
SERVER_IP:9090/graph
Install Node Exporter
wget github.com/pro...
tar -xvzf node_exporter-0.17.0.linux-amd64.tar.gz
useradd -rs /bin/false nodeusr
mv node_exporter-0.17.0.linux-amd64/node_exporter /usr/local/bin/
vim /etc/systemd/system/node_exporter.service
[Unit]
Description=Node Exporter
After=network.target
[Service]
User=nodeusr
Group=nodeusr
Type=simple
ExecStart=/usr/local/bin/node_exporter
[Install]
WantedBy=multi-user.target
systemctl daemon-reload
systemctl start node_exporter
systemctl enable node_exporter
SERVER_IP:9100/metrics
Login on Prometheus server again
vim /etc/prometheus/prometheus.yml
job_name: 'node_exporter_centos'
scrape_interval: 5s
static_configs:
targets: ['CLIENT_IP:9100']
systemctl restart prometheus
SERVER_IP:9090/targets
Select
Node_memory_MemFree_bytes
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