This article will help you get the Http plugin for sd-agent configured and returning metrics
Installing the http plugin package
Install the http plugin on Debian/Ubuntu:
sudo apt-get install sd-agent-http-check
Install the http plugin on RHEL/CentOS:
sudo yum install sd-agent-http-check
Read more about agent plugins.
Configuring the agent to collect swap metrics
1. Configure /etc/sd-agent/conf.d/http_check.yaml
init_config: instances: - name: Example website url: https://example.com/ # disable_ssl_validation: false # default is true, so set false to check SSL validation # ca_certs: /path/to/ca/file # e.g. /etc/ssl/certs/ca-certificates.crt # check_certificate_expiration: true # default is true # timeout: 3 # in seconds. Default is 1. - name: Example website (staging) url: http://staging.example.com/
2. Restart the agent
sudo /etc/init.d/sd-agent restart
or
sudo systemctl restart sd-agent
Verifying the configuration
Execute info to verify the configuration with the following:
sudo /etc/init.d/sd-agent info
or
/usr/share/python/sd-agent/agent.py info
If the agent has been configured correctly you'll see an output such as:
http ----- - instance #0 [OK] - Collected * metrics
You can also view the metrics returned with the following command:
sudo -u sd-agent /usr/share/python/sd-agent/agent.py check http_check
Configuring graphs
Click the name of your server from the Devices list in your Server Density account then go to the Metrics tab. Click the + Graph button on the right then choose the http metrics to display the graphs. The metrics will also be available to select when building dashboard graphs.
Monitored metrics
Metric | Values |
---|---|
http.ssl.days_left Days until SSL certificate expiration |
day / None Type: float |
network.http.response_time The response time of an HTTP request to a given url, tagged by url, e.g. 'url:http://example.com'. |
second / None Type: float |
network.http.can_connect Whether the check can connect, 1 if true, 0 otherwise. Tagged by url, e.g. 'url:http://example.com'. |
None / None Type: int |
network.http.cant_connect Whether the check failed to connect, 1 if true, 0 otherwise. Tagged by url, e.g. 'url:http://example.com'. |
None / None Type: int |
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