NtopNG Rest API
Pack Assets​
Templates​
The Centreon Pack NtopNG brings 1 host template:
- App-Monitoring-Ntopng-Restapi-custom
It brings the following Service Templates:
| Service Alias | Service Template | Default | Discovery |
|---|---|---|---|
| Alerts | App-Monitoring-Ntopng-Restapi-Alerts | X | |
| Host-Flows | App-Monitoring-Ntopng-Restapi-Host-Flows | ||
| Netflow-Health | App-Monitoring-Ntopng-Restapi-Netflow-Health | X | |
| Probe-Health | App-Monitoring-Ntopng-Restapi-Probe-Health | X |
Collected metrics & status​
- Alerts
- Host-Flows
- Netflow-Health
- Probe-Health
| Metric name | Description | Unit |
|---|---|---|
| alerts.severity.error.count | Number of alerts with error severity | |
| alerts.severity.warning.count | Number of alerts with warning severity | |
| alerts.severity.info.count | Number of alerts with informational severity | |
| alert status | Current alert status | |
| type#alerts.type.detected.count | Number of alerts detected by type |
| Metric name | Description | Unit |
|---|---|---|
| ipaddress#host.packets.received.persecond | Number of incoming packets per IP address | |
| ipaddress#host.packets.sent.persecond | Number of outgoing packets per IP address | |
| ipaddress#host.traffic.in.bitspersecond | Incoming traffic per IP address | b/s |
| ipaddress#host.traffic.out.bitspersecond | Outgoing traffic per IP address | b/s |
| Metric name | Description | Unit |
|---|---|---|
| flows.detected.count | Number of flows detected | |
| flows.alerted.detected.count | Number of alerted flows detected | |
| flows.alerted.percentage | Percentage of alerted flows detected | % |
| packets.download.persecond | Number of incoming packets | |
| packets.upload.persecond | Number of outgoing packets | |
| traffic.in.bitspersecond | Incoming traffic | b/s |
| traffic.out.bitspersecond | Outgoing traffic | b/s |
| Metric name | Description | Unit |
|---|---|---|
| cpu.utilization.percentage | Average total CPU usage | |
| cpu.load.percentage | System CPU load | |
| memory.usage.percentage | Current memory usage | % |
| alerts.dropped.persecond | Number of dropped alerts |
Prerequisites​
To monitor your NtopNG, the Rest API must be configured. E.g: https://www.ntop.org/guides/ntopng/api/
Setup​
- Online License
- Offline License
- Install the Centreon package on every Centreon poller expected to monitor NtopNG RestAPI resources:
yum install centreon-plugin-Applications-Monitoring-Ntopng-Restapi
- On the Centreon Web interface, install the NtopNG RestAPI Centreon Pack on the Configuration > Monitoring Connector Manager page.
- Install the Centreon package on every Centreon poller expected to monitor NtopNG RestAPI resources:
yum install centreon-plugin-Applications-Monitoring-Ntopng-Restapi
- Install the NtopNG RestAPI Centreon Pack RPM on the Centreon Central server:
yum install centreon-pack-applications-monitoring-ntopng-restapi
- On the Centreon Web interface, install the NtopNG RestAPI Centreon Pack on the Configuration > Monitoring Connector Manager page.
Configuration​
Host​
- Log into Centreon and add a new Host through Configuration > Hosts.
- Fill the Name, Alias & IP Address / DNS fields according to your NtopNG RestAPI server settings.
- Apply the App-Monitoring-Ntopng-Restapi-custom template to the host.
- Once the template is applied, fill in the corresponding macros. Some macros are mandatory.
| Mandatory | Name | Description |
|---|---|---|
| X | NTOPNGAPIPORT | Port used (Default: 3000) |
| X | NTOPNGAPIPROTO | Specify https if needed (default: 'http') |
| X | NTOPNGAPIUSERNAME | Api username |
| X | NTOPNGAPIPASSWORD | Api password |
| NTOPNGAPIEXTRAOPTIONS | Any extra option you may want to add to the command (eg. a --verbose flag) |
How to check in the CLI that the configuration is OK and what are the main options for?​
Once the plugin is installed, log into your Centreon poller's CLI using the
centreon-engine user account (su - centreon-engine) and test the plugin by
running the following command:
/usr/lib/centreon/plugins/centreon_monitoring_ntopng_restapi.pl \
--plugin=apps::monitoring::ntopng::restapi::plugin \
--mode=probe-health \
--hostname='10.0.0.1' \
--port='443' \
--proto='https' \
--api-username='my-username' \
--api-password='my-password' \
--verbose
The expected command output is shown below:
OK: cpu utilization: 2.10%, cpu load: 0.06, memory used: 11.83 %, dropped alerts: 0.00/s | 'cpu.utilization.percentage'=2.10%;;;0;100 'cpu.load.percentage'=0.06;;;0; 'memory.usage.percentage'=11.83%;;;0;100 'alerts.dropped.persecond'=0.00/s;;;0;
All available options for a given mode can be displayed by adding the
--help parameter to the command:
/usr/lib/centreon/plugins/centreon_monitoring_ntopng_restapi.pl \
--plugin=apps::monitoring::ntopng::restapi::plugin \
--mode=probe-health \
--help
All available modes can be displayed by adding the
--list-mode parameter to the command:
/usr/lib/centreon/plugins/centreon_monitoring_ntopng_restapi.pl \
--plugin=apps::monitoring::ntopng::restapi::plugin \
--list-mode
Troubleshooting​
Please find the troubleshooting documentation for the API-based plugins in this chapter.