Unbound
Unbound
Plugin: go.d.plugin Module: unbound
Overview
This collector monitors Unbound 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.
Setup
Prerequisites
Enable remote control interface
Set control-enable to yes in unbound.conf.
Check permissions and adjust if necessary
If using unix socket:
- socket should be readable and writeable by
netdatauser
If using ip socket and TLS is disabled:
- socket should be accessible via network
If TLS is enabled, in addition:
control-key-fileshould be readable bynetdatausercontrol-cert-fileshould be readable bynetdatauser
For auto-detection parameters from unbound.conf:
unbound.confshould be readable bynetdatauser- if you have several configuration files (include feature) all of them should be readable by
netdatauser
Configuration
File
The configuration file name for this integration is go.d/unbound.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/unbound.conf
Options
The following options can be defined globally: update_every, autodetection_retry.
| Name | Description | Default | Required |
|---|---|---|---|
| update_every | Data collection frequency. | 5 | no |
| autodetection_retry | Recheck interval in seconds. Zero means no recheck will be scheduled. | 0 | no |
| address | Server address in IP:PORT format. | 127.0.0.1:8953 | yes |
| timeout | Connection/read/write/ssl handshake timeout. | 1 | no |
| conf_path | Absolute path to the unbound configuration file. | /etc/unbound/unbound.conf | no |
| cumulative_stats | Statistics collection mode. Should have the same value as the statistics-cumulative parameter in the unbound configuration file. |
no | no |
| use_tls | Whether to use TLS or not. | yes | no |
| tls_skip_verify | Server certificate chain and hostname validation policy. Controls whether the client performs this check. | yes | no |
| tls_ca | Certificate authority that client use when verifying server certificates. | no | |
| tls_cert | Client tls certificate. | /etc/unbound/unbound_control.pem | no |
| tls_key | Client tls key. | /etc/unbound/unbound_control.key | no |
Examples
Basic
An example configuration.
jobs:
- name: local
address: 127.0.0.1:8953
Unix socket
Connecting through Unix socket.
jobs:
- name: socket
address: /var/run/unbound.sock
Multi-instance
Note: When you define multiple jobs, their names must be unique.
Local and remote instances.
jobs:
- name: local
address: 127.0.0.1:8953
- name: remote
address: 203.0.113.11:8953
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 Unbound instance
These metrics refer to the entire monitored application.
This scope has no labels.
Metrics:
| Metric | Dimensions | Unit |
|---|---|---|
| unbound.queries | queries | queries |
| unbound.queries_ip_ratelimited | ratelimited | queries |
| unbound.dnscrypt_queries | crypted, cert, cleartext, malformed | queries |
| unbound.cache | hits, miss | events |
| unbound.cache_percentage | hits, miss | percentage |
| unbound.prefetch | prefetches | prefetches |
| unbound.expired | expired | replies |
| unbound.zero_ttl_replies | zero_ttl | replies |
| unbound.recursive_replies | recursive | replies |
| unbound.recursion_time | avg, median | milliseconds |
| unbound.request_list_usage | avg, max | queries |
| unbound.current_request_list_usage | all, users | queries |
| unbound.request_list_jostle_list | overwritten, dropped | queries |
| unbound.tcpusage | usage | buffers |
| unbound.uptime | time | seconds |
| unbound.cache_memory | message, rrset, dnscrypt_nonce, dnscrypt_shared_secret | KB |
| unbound.mod_memory | iterator, respip, validator, subnet, ipsec | KB |
| unbound.mem_streamwait | streamwait | KB |
| unbound.cache_count | infra, key, msg, rrset, dnscrypt_nonce, shared_secret | items |
| unbound.type_queries | a dimension per query type | queries |
| unbound.class_queries | a dimension per query class | queries |
| unbound.opcode_queries | a dimension per query opcode | queries |
| unbound.flag_queries | qr, aa, tc, rd, ra, z, ad, cd | queries |
| unbound.rcode_answers | a dimension per reply rcode | replies |
Per thread
These metrics refer to threads.
This scope has no labels.
Metrics:
| Metric | Dimensions | Unit |
|---|---|---|
| unbound.thread_queries | queries | queries |
| unbound.thread_queries_ip_ratelimited | ratelimited | queries |
| unbound.thread_dnscrypt_queries | crypted, cert, cleartext, malformed | queries |
| unbound.thread_cache | hits, miss | events |
| unbound.thread_cache_percentage | hits, miss | percentage |
| unbound.thread_prefetch | prefetches | prefetches |
| unbound.thread_expired | expired | replies |
| unbound.thread_zero_ttl_replies | zero_ttl | replies |
| unbound.thread_recursive_replies | recursive | replies |
| unbound.thread_recursion_time | avg, median | milliseconds |
| unbound.thread_request_list_usage | avg, max | queries |
| unbound.thread_current_request_list_usage | all, users | queries |
| unbound.thread_request_list_jostle_list | overwritten, dropped | queries |
| unbound.thread_tcpusage | usage | buffers |
Alerts
There are no alerts configured by default for this integration.
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 unbound 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.ddirectory, usually at/usr/libexec/netdata/plugins.d/. If that’s not the case on your system, opennetdata.confand look for thepluginssetting under[directories].cd /usr/libexec/netdata/plugins.d/ -
Switch to the
netdatauser.sudo -u netdata -s -
Run the
go.d.pluginto debug the collector:./go.d.plugin -d -m unbound
Getting Logs
If you’re encountering problems with the unbound 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 unbound
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 unbound /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 unbound