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PowerDNS Recursor

Plugin: go.d.plugin Module: powerdns_recursor

Overview

This collector monitors PowerDNS Recursor instances.

It collects metrics from the internal webserver.

Used endpoints:

This collector is supported on all platforms.

This collector supports collecting metrics from multiple instances of this integration, including remote instances.

Default Behavior

Auto-Detection

This integration doesn't support auto-detection.

Limits

The default configuration for this integration does not impose any limits on data collection.

Performance Impact

The default configuration for this integration is not expected to impose a significant performance impact on the system.

Metrics

Metrics grouped by scope.

The scope defines the instance that the metric belongs to. An instance is uniquely identified by a set of labels.

Per PowerDNS Recursor instance

These metrics refer to the entire monitored application.

This scope has no labels.

Metrics:

MetricDimensionsUnit
powerdns_recursor.questions_intotal, tcp, ipv6questions/s
powerdns_recursor.questions_outudp, tcp, ipv6, throttledquestions/s
powerdns_recursor.answer_time0-1ms, 1-10ms, 10-100ms, 100-1000ms, slowqueries/s
powerdns_recursor.timeoutstotal, ipv4, ipv6timeouts/s
powerdns_recursor.dropsover-capacity-drops, query-pipe-full-drops, too-old-drops, truncated-drops, empty-queriesdrops/s
powerdns_recursor.cache_usagecache-hits, cache-misses, packet-cache-hits, packet-cache-missesevents/s
powerdns_recursor.cache_sizecache, packet-cache, negative-cacheentries

Alerts

There are no alerts configured by default for this integration.

Setup

Prerequisites

Enable webserver

Follow webserver documentation.

Enable HTTP API

Follow HTTP API documentation.

Configuration

File

The configuration file name for this integration is go.d/powerdns_recursor.conf.

You can edit the configuration file using the edit-config script from the Netdata config directory.

cd /etc/netdata 2>/dev/null || cd /opt/netdata/etc/netdata
sudo ./edit-config go.d/powerdns_recursor.conf

Options

The following options can be defined globally: update_every, autodetection_retry.

Config options
NameDescriptionDefaultRequired
update_everyData collection frequency.5no
autodetection_retryRecheck interval in seconds. Zero means no recheck will be scheduled.0no
urlServer URL.http://127.0.0.1:8081yes
timeoutHTTP request timeout.1no
usernameUsername for basic HTTP authentication.no
passwordPassword for basic HTTP authentication.no
proxy_urlProxy URL.no
proxy_usernameUsername for proxy basic HTTP authentication.no
proxy_passwordPassword for proxy basic HTTP authentication.no
methodHTTP request method.GETno
bodyHTTP request body.no
headersHTTP request headers.no
not_follow_redirectsRedirect handling policy. Controls whether the client follows redirects.nono
tls_skip_verifyServer certificate chain and hostname validation policy. Controls whether the client performs this check.nono
tls_caCertification authority that the client uses when verifying the server's certificates.no
tls_certClient TLS certificate.no
tls_keyClient TLS key.no

Examples

Basic

An example configuration.

Config
jobs:
- name: local
url: http://127.0.0.1:8081

HTTP authentication

Basic HTTP authentication.

Config
jobs:
- name: local
url: http://127.0.0.1:8081
username: admin
password: password

Multi-instance

Note: When you define multiple jobs, their names must be unique.

Local and remote instances.

Config
jobs:
- name: local
url: http://127.0.0.1:8081

- name: remote
url: http://203.0.113.0:8081

Troubleshooting

Debug Mode

To troubleshoot issues with the powerdns_recursor collector, run the go.d.plugin with the debug option enabled. The output should give you clues as to why the collector isn't working.

  • Navigate to the plugins.d directory, usually at /usr/libexec/netdata/plugins.d/. If that's not the case on your system, open netdata.conf and look for the plugins setting under [directories].

    cd /usr/libexec/netdata/plugins.d/
  • Switch to the netdata user.

    sudo -u netdata -s
  • Run the go.d.plugin to debug the collector:

    ./go.d.plugin -d -m powerdns_recursor

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