Here we are going to use Blackbox export on grafana Dashboard
- Download the blackbox exporter
wget https://github.com/prometheus/blackbox_exporter/releases/download/v0.24.0/blackbox_exporter-0.24.0.linux-amd64.tar.gz
- extract the package
tar -xvf blackbox_exporter-0.24.0.linux-amd64.tar.gz
- enter into blackbox directory
cd blackbox_exporter-0.24.0.linux-amd64
- create the monitor_website.yml file
vim monitor_website.yml
modules:
http_2xx_example:
prober: http
timeout: 5s
http:
valid_http_versions: ["HTTP/1.1", "HTTP/2.0"]
valid_status_codes: [200] # Defaults to 2xx
method: GET
- Create the service file for blackbox
vim /etc/systemd/system/blackbox.service
[Unit]
Description = Prometheus Server
Documentation=https://prometheus.io/docs/introduction/overview/
After=network-online.target
[Service]
User=root
Restart=on-failure
ExecStart=/root/blackbox_exporter-0.24.0.linux-amd64/blackbox_exporter --config.file=/root/blackbox_exporter-0.24.0.linux-amd64/monitor_website.yml
[Install]
WantedBy=multi-user.target
- Reload,start,enable and find the status of the balckbox service
systemctl daemon-reload
systemctl start blackbox
systemctl enable blackbox
systemctl status blackbox
- At prometheus server creating the scrape config file
vim /etc/prometheus/prometheus.yml
- job_name: 'blackbox'
metrics_path: /probe
params:
module: [http_2xx_example] # Look for a HTTP 200 response.
static_configs:
- targets:
- http://prometheus.io # Target to probe with http.
- https://prometheus.io # Target to probe with https.
- http://kaniyam.com
- http://freetamilebooks.com
relabel_configs:
- source_labels: [__address__]
target_label: __param_target
- source_labels: [__param_target]
target_label: instance
- target_label: __address__
replacement: 192.168.122.138:9115
- Restart the services
systemctl restart prometheus
systemctl restart grafana-server
- To verify the blackbox metric http://192.168.122.138:9115
- In Grafana Dashboard Create a query and add metrics
probe_http_status_code
probe_http_ssl
Add > Virtulization >select tables >set value mappings and set colour >rename the panel.
Below the metric "option" set the type as "Table", "instant"
Select "Transform data" and modify the name as your choice.
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