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Dnsmasq

Plugin: go.d.plugin Module: dnsmasq

Overview

This collector monitors Dnsmasq servers.

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 Dnsmasq instance

The metrics apply to the entire monitored application.

This scope has no labels.

Metrics:

MetricDimensionsUnit
dnsmasq.servers_queriessuccess, failedqueries/s
dnsmasq.cache_performancehist, missesevents/s
dnsmasq.cache_operationsinsertions, evictionsoperations/s
dnsmasq.cache_sizesizeentries

Alerts

There are no alerts configured by default for this integration.

Setup

Prerequisites

No action required.

Configuration

File

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

Options

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

Config options
NameDescriptionDefaultRequired
update_everyData collection frequency.1no
autodetection_retryRecheck interval in seconds. Zero means no recheck will be scheduled.0no
addressServer address in ip:port format.127.0.0.1:53yes
protocolDNS query transport protocol. Supported protocols: udp, tcp, tcp-tls.udpno
timeoutDNS query timeout (dial, write and read) in seconds.1no

Examples

Basic

An example configuration.

Config
jobs:
- name: local
address: 127.0.0.1:53

Using TCP protocol

Local server with specific DNS query transport protocol.

Config
jobs:
- name: local
address: 127.0.0.1:53
protocol: tcp

Multi-instance

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

Collecting metrics from local and remote instances.

Config
jobs:
- name: local
address: 127.0.0.1:53

- name: remote
address: 203.0.113.0:53

Troubleshooting

Debug Mode

Important: Debug mode is not supported for data collection jobs created via the UI using the Dyncfg feature.

To troubleshoot issues with the dnsmasq 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 dnsmasq

Getting Logs

If you're encountering problems with the dnsmasq collector, follow these steps to retrieve logs and identify potential issues:

  • Run the command specific to your system (systemd, non-systemd, or Docker container).
  • Examine the output for any warnings or error messages that might indicate issues. These messages should provide clues about the root cause of the problem.

System with systemd

Use the following command to view logs generated since the last Netdata service restart:

journalctl _SYSTEMD_INVOCATION_ID="$(systemctl show --value --property=InvocationID netdata)" --namespace=netdata --grep dnsmasq

System without systemd

Locate the collector log file, typically at /var/log/netdata/collector.log, and use grep to filter for collector's name:

grep dnsmasq /var/log/netdata/collector.log

Note: This method shows logs from all restarts. Focus on the latest entries for troubleshooting current issues.

Docker Container

If your Netdata runs in a Docker container named "netdata" (replace if different), use this command:

docker logs netdata 2>&1 | grep dnsmasq

Do you have any feedback for this page? If so, you can open a new issue on our netdata/learn repository.