NETOBSERV-2455 - add DNS Name

[jpinsonneau]

Description

Simply add DNS Name to display / db

• To generate some DNS traffic:

apiVersion: v1
kind: Namespace
metadata:
  labels:
  name: dns-test
---
apiVersion: v1
kind: Pod
metadata:
  name: dnsutils-udp
  namespace: dns-test
spec:
  securityContext:
    seccompProfile:
      type: RuntimeDefault
  containers:
    - name: utils
      image: tutum/dnsutils
      command: ["/bin/sh", "-ec", "while :; do dig www.google.com; sleep 10; done"]
      securityContext:
        allowPrivilegeEscalation: false
        capabilities:
          drop: ["ALL"]
---
apiVersion: v1
kind: Pod
metadata:
  name: dnsutils-tcp
  namespace: dns-test
spec:
  securityContext:
    seccompProfile:
      type: RuntimeDefault
  containers:
    - name: utils
      image: tutum/dnsutils
      command: ["/bin/sh", "-ec", "while :; do dig www.google.com +tcp; sleep 10; done"]
      securityContext:
        allowPrivilegeEscalation: false
        capabilities:
          drop: ["ALL"]

• flow json:
  2025-10-28T104236Z.json

• flow db:

DnsErrno|Dscp|DstAddr    |DstPort|Interface|Proto|SrcAddr   |SrcPort|Bytes|Packets|PktDropLatestDropCause|PktDropBytes|PktDropPackets|DnsId|DnsName                    |DnsFlagsResponseCode|DnsLatencyMs|TimeFlowRTTNs|
--------+----+-----------+-------+---------+-----+----------+-------+-----+-------+----------------------+------------+--------------+-----+---------------------------+--------------------+------------+-------------+
        |   0|10.244.2.13|  47143|         |    6|10.96.0.10|     53|  404|      4|                      |            |              | 6893|iamnotavaliddomain.com     |NXDomain            |0           |             |
        |   0|10.244.2.13|  47143|         |    6|10.244.0.4|     53|  404|      4|                      |            |              | 6893|iamnotavaliddomain.com     |NXDomain            |0           |             |
        |   0|172.18.0.4 |  43215|         |   17|10.244.0.4|     53|  232|      1|                      |            |              |48277|_grpc_config.collector     |NXDomain            |0           |             |
        |   0|10.244.1.14|  42136|         |   17|10.244.0.4|     53|  172|      1|                      |            |              | 6893|iamnotavaliddomain.com     |NXDomain            |0           |             |
        |   0|10.244.2.13|  47143|         |    6|10.244.0.4|     53|  404|      4|                      |            |              | 6893|iamnotavaliddomain.com     |NXDomain            |0           |             |
        |   0|172.18.0.4 |  62007|         |   17|10.244.0.4|     53|  223|      1|                      |            |              |54591|collector.netobserv-cli.svc|NXDomain            |0           |             |
        |   0|10.244.1.14|  42136|         |   17|10.244.0.4|     53|  172|      1|                      |            |              | 6893|iamnotavaliddomain.com     |NXDomain            |0           |             |
        |   0|10.244.1.14|  42136|         |   17|10.96.0.10|     53|  172|      1|                      |            |              | 6893|iamnotavaliddomain.com     |NXDomain            |0           |             |
        |   0|172.18.0.4 |  62007|         |   17|10.244.0.4|     53|  223|      1|                      |            |              |54591|collector.netobserv-cli.svc|NXDomain            |0           |             |
        |   0|172.18.0.4 |  43215|         |   17|10.244.0.4|     53|  232|      1|                      |            |              |48277|_grpc_config.collector     |NXDomain            |0           |             |
        |   0|172.18.0.3 |  58887|         |   17|10.244.0.2|     53|  205|      1|                      |            |              |35219|collector.netobserv-cli.svc|NoError             |0           |             |
        |   0|172.18.0.3 |  43272|         |   17|10.244.0.4|     53|  219|      1|                      |            |              | 3594|collector.netobserv-cli.svc|NXDomain            |0           |             |
        |   0|172.18.0.3 |  57774|         |   17|10.244.0.4|     53|  219|      1|                      |            |              |33572|collector.netobserv-cli.svc|NXDomain            |0           |             |
        |   0|172.18.0.3 |  58887|         |   17|10.244.0.2|     53|  205|      1|                      |            |              |35219|collector.netobserv-cli.svc|NoError             |0           |             |
        |   0|172.18.0.3 |  43272|         |   17|10.244.0.4|     53|  219|      1|                      |            |              | 3594|collector.netobserv-cli.svc|NXDomain            |0           |             |
        |   0|172.18.0.3 |  57774|         |   17|10.244.0.4|     53|  219|      1|                      |            |              |33572|collector.netobserv-cli.svc|NXDomain            |0           |             |
        |   0|10.244.2.13|  41203|         |    6|10.244.0.2|     53|  404|      4|                      |            |              |22691|iamnotavaliddomain.com     |NXDomain            |0           |             |
        |   0|10.244.2.13|  41203|         |    6|10.96.0.10|     53|  404|      4|                      |            |              |22691|iamnotavaliddomain.com     |NXDomain            |0           |             |
        |   0|10.244.1.14|  39766|         |   17|10.244.0.2|     53|  172|      1|                      |            |              |22691|iamnotavaliddomain.com     |NXDomain            |0           |             |
        |   0|10.244.2.13|  41203|         |    6|10.244.0.2|     53|  404|      4|                      |            |              |22691|iamnotavaliddomain.com     |NXDomain            |0           |             |
        |   0|10.244.1.14|  39766|         |   17|10.244.0.2|     53|  172|      1|                      |            |              |22691|iamnotavaliddomain.com     |NXDomain            |0           |             |
        |   0|10.244.1.14|  39766|         |   17|10.96.0.10|     53|  172|      1|                      |            |              |22691|iamnotavaliddomain.com     |NXDomain            |0           |             |
        |   0|10.244.0.2 |  44522|         |    6|172.18.0.1|     53|  267|      3|                      |            |              |38776|www.google.com             |NoError             |0           |             |
        |   0|10.244.2.14|  47371|         |   17|10.244.0.4|     53|  115|      1|                      |            |              |52045|www.google.com             |NoError             |0           |             |
        |   0|10.244.2.14|  47371|         |   17|10.244.0.4|     53|  115|      1|                      |            |              |52045|www.google.com             |NoError             |1           |             |
        |   0|10.244.2.14|  47371|         |   17|10.96.0.10|     53|  115|      1|                      |            |              |52045|www.google.com             |NoError             |1           |             |
        |   0|10.244.2.14|  41865|         |   17|10.244.0.4|     53|     |       |                      |            |              |54455|www.google.com             |NoError             |0           |             |
        |   0|10.244.2.14|  41865|         |   17|10.244.0.4|     53|  115|      1|                      |            |              |54455|www.google.com             |NoError             |0           |             |
        |   0|10.244.2.14|  41865|         |   17|10.96.0.10|     53|  115|      1|                      |            |              |54455|www.google.com             |NoError             |0           |             |
        |   0|10.244.2.14|  59563|         |   17|10.96.0.10|     53|  115|      1|                      |            |              |12786|www.google.com             |NoError             |0           |             |
        |   0|10.244.2.14|  59563|         |   17|10.244.0.4|     53|  115|      1|                      |            |              |12786|www.google.com             |NoError             |0           |             |
        |   0|10.244.2.14|  59563|         |   17|10.244.0.4|     53|  115|      1|                      |            |              |12786|www.google.com             |NoError             |0           |             |
        |   0|10.244.2.14|  55601|         |   17|10.244.0.4|     53|  115|      1|                      |            |              |29279|www.google.com             |NoError             |0           |             |
        |   0|10.244.2.14|  55601|         |   17|10.96.0.10|     53|  115|      1|                      |            |              |29279|www.google.com             |NoError             |0           |             |
        |   0|10.244.2.14|  55601|         |   17|10.244.0.4|     53|  115|      1|                      |            |              |29279|www.google.com             |NoError             |0           |             |

Dependencies

netobserv/netobserv-ebpf-agent#820
netobserv/network-observability-operator#2114

Checklist

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• Is this PR backed with a JIRA ticket? If so, make sure it is written as a title prefix (in general, PRs affecting the NetObserv/Network Observability product should be backed with a JIRA ticket - especially if they bring user facing changes).
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  • If so, make sure the JIRA epic is labelled with "documentation" and provides a description relevant for doc writers, such as use cases or scenarios. Any required step to activate or configure the feature should be documented there, such as new CRD knobs.
• Does this PR require a product release notes entry?
  • If so, fill in "Release Note Text" in the JIRA.
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• QE requirements (check 1 from the list):
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  • Regression tests only (e.g. refactoring with no user-facing change).
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[codecov]

Codecov Report

❌ Patch coverage is 60.00000% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 13.87%. Comparing base (1654142) to head (ad21e6a).

Files with missing lines	Patch %	Lines
cmd/flow_db.go	60.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #406      +/-   ##
==========================================
+ Coverage   13.84%   13.87%   +0.03%     
==========================================
  Files          18       18              
  Lines        2731     2278     -453     
==========================================
- Hits          378      316      -62     
+ Misses       2329     1938     -391     
  Partials       24       24              

Flag	Coverage Δ
unittests	13.87% <60.00%> (+0.03%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
cmd/flow_db.go	51.96% <60.00%> (+0.61%)	⬆️

... and 15 files with indirect coverage changes

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