netdata/netdata

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# DNSdist


<img src="https://netdata.cloud/img/network-wired.svg" width="150"/>


Plugin: go.d.plugin
Module: dnsdist

<img src="https://img.shields.io/badge/maintained%20by-Netdata-%2300ab44" />

## Overview

This collector monitors DNSDist 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 DNSdist instance

These metrics refer to the entire monitored application.

This scope has no labels.

Metrics:

| Metric | Dimensions | Unit |
|:------|:----------|:----|
| dnsdist.queries | all, recursive, empty | queries/s |
| dnsdist.queries_dropped | rule_drop, dynamic_blocked, no_policy, non_queries | queries/s |
| dnsdist.packets_dropped | acl | packets/s |
| dnsdist.answers | self_answered, nxdomain, refused, trunc_failures | answers/s |
| dnsdist.backend_responses | responses | responses/s |
| dnsdist.backend_commerrors | send_errors | errors/s |
| dnsdist.backend_errors | timeouts, servfail, non_compliant | responses/s |
| dnsdist.cache | hits, misses | answers/s |
| dnsdist.servercpu | system_state, user_state | ms/s |
| dnsdist.servermem | memory_usage | MiB |
| dnsdist.query_latency | 1ms, 10ms, 50ms, 100ms, 1sec, slow | queries/s |
| dnsdist.query_latency_avg | 100, 1k, 10k, 1000k | microseconds |



## Alerts

There are no alerts configured by default for this integration.


## Setup

### Prerequisites

#### Enable DNSdist built-in Webserver

For collecting metrics via HTTP, you need to [enable the built-in webserver](https://dnsdist.org/guides/webserver.html).



### Configuration

#### File

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


You can edit the configuration file using the `edit-config` script from the
Netdata [config directory](https://github.com/netdata/netdata/blob/master/docs/netdata-agent/configuration/README.md#the-netdata-config-directory).

```bash
cd /etc/netdata 2>/dev/null || cd /opt/netdata/etc/netdata
sudo ./edit-config go.d/dnsdist.conf
```
#### Options

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


<details><summary>Config options</summary>

| Name | Description | Default | Required |
|:----|:-----------|:-------|:--------:|
| update_every | Data collection frequency. | 1 | no |
| autodetection_retry | Recheck interval in seconds. Zero means no recheck will be scheduled. | 0 | no |
| url | Server URL. | http://127.0.0.1:8083 | yes |
| username | Username for basic HTTP authentication. |  | no |
| password | Password for basic HTTP authentication. |  | no |
| proxy_url | Proxy URL. |  | no |
| proxy_username | Username for proxy basic HTTP authentication. |  | no |
| proxy_password | Password for proxy basic HTTP authentication. |  | no |
| timeout | HTTP request timeout. | 1 | no |
| method | HTTP request method. | GET | no |
| body | HTTP request body. |  | no |
| headers | HTTP request headers. |  | no |
| not_follow_redirects | Redirect handling policy. Controls whether the client follows redirects. | no | no |
| tls_skip_verify | Server certificate chain and hostname validation policy. Controls whether the client performs this check. | no | no |
| tls_ca | Certification authority that the client uses when verifying the server's certificates. |  | no |
| tls_cert | Client tls certificate. |  | no |
| tls_key | Client tls key. |  | no |

</details>

#### Examples

##### Basic

An example configuration.

<details><summary>Config</summary>

```yaml
jobs:
  - name: local
    url: http://127.0.0.1:8083
    headers:
      X-API-Key: your-api-key # static pre-shared authentication key for access to the REST API (api-key).

```
</details>

##### Multi-instance

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

Collecting metrics from local and remote instances.


<details><summary>Config</summary>

```yaml
jobs:
  - name: local
    url: http://127.0.0.1:8083
    headers:
      X-API-Key: 'your-api-key' # static pre-shared authentication key for access to the REST API (api-key).

  - name: remote
    url: http://203.0.113.0:8083
    headers:
      X-API-Key: 'your-api-key'

```
</details>



## Troubleshooting

### Debug Mode

To troubleshoot issues with the `dnsdist` 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]`.

  ```bash
  cd /usr/libexec/netdata/plugins.d/
  ```

- Switch to the `netdata` user.

  ```bash
  sudo -u netdata -s
  ```

- Run the `go.d.plugin` to debug the collector:

  ```bash
  ./go.d.plugin -d -m dnsdist
  ```