isabella232 / dnsping

DNS Ping: to check packet loss and latency issues with DNS servers

DNSping

DNS Ping checks packet loss and latency issues with DNS servers

Installation

If you have golang, easiest install is go get -u fortio.org/dnsping

Or with docker docker run fortio/dnsping ...

Or brew custom tap source build brew install fortio/dnsping/dnsping (please star the project so it can go in core and get binary bottles built)

Otherwise head over to https://github.com/fortio/dnsping/releases for binary releases

Usage:

dnsping [flags] query server

$ dnsping -h
dnsping v1.1.0 usage:
	dnsping [flags] query server
eg:	dnsping www.google.com. 127.0.0.1
with flags:
  -c requests
    	How many requests to make. Default is to run until ^C
  -fixed-id int
    	Non 0 id to use instead of random or sequential
  -i wait
    	How long to wait between requests (default 1s)
  -json path
    	Json output to provided file path or '-' for stdout (empty = no json output)
  -loglevel value
    	loglevel, one of [Debug Verbose Info Warning Error Critical Fatal] (default Info)
  -no-recursion
    	Pass to disable (default) recursion.
  -p Port
    	Port to connect to (default 53)
  -q type
    	Query type to use (A, AAAA, SOA, CNAME...) (default "A")
  -sequential-id
    	Use sequential ids instead of random.
  -t Timeout
    	Timeout for each query (default 700ms)
  -v	Display version and exit.

Sample run

dnsping -fixed-id 42 -json sampleResult.json -c 8  www.google.com 8.8.4.4
16:08:03 I Will query 8 times, sleeping 1s in between, the server 8.8.4.4:53 for A (1) record for www.google.com.
16:08:03 I   8.7 ms   1: [www.google.com.	298	IN	A	172.217.6.68]
16:08:04 I  16.5 ms   2: [www.google.com.	229	IN	A	172.217.6.36]
16:08:05 I  14.1 ms   3: [www.google.com.	179	IN	A	216.58.194.196]
16:08:06 E 700.3 ms   4: failed call: read udp 10.10.50.62:65456->8.8.4.4:53: i/o timeout
16:08:07 I  15.0 ms   5: [www.google.com.	195	IN	A	216.58.194.196]
16:08:08 I  13.5 ms   6: [www.google.com.	196	IN	A	216.58.194.196]
16:08:09 I  14.8 ms   7: [www.google.com.	179	IN	A	216.58.194.196]
16:08:10 I  15.5 ms   8: [www.google.com.	285	IN	A	172.217.6.68]
1 error (12.50%), 7 success.
response time (in ms) : count 8 avg 99.792926 +/- 227 min 8.684216 max 700.257965 sum 798.343406
# range, mid point, percentile, count
>= 8.68422 <= 9 , 8.84211 , 12.50, 1
> 12 <= 14 , 13 , 25.00, 1
> 14 <= 16 , 15 , 75.00, 4
> 16 <= 18 , 17 , 87.50, 1
> 500 <= 700.258 , 600.129 , 100.00, 1
# target 50% 15
# target 90% 540.052
# target 99% 684.237
Successfully wrote 1212 bytes of Json data to sampleResult.json

Which also produces the json:

{
  "Config": {
    "Server": "8.8.4.4:53",
    "Query": "www.google.com.",
    "HowMany": 8,
    "Interval": 1000000000,
    "Timeout": 700000000,
    "FixedID": 42,
    "QueryType": 1,
    "SequentialIDs": false,
    "Recursion": true
  },
  "Errors": 1,
  "Success": 7,
  "Stats": {
    "Count": 8,
    "Min": 8.684216,
    "Max": 700.257965,
    "Sum": 798.3434060000001,
    "Avg": 99.79292575000001,
    "StdDev": 226.96508473843934,
    "Data": [
      {
        "Start": 8.684216,
        "End": 9,
        "Percent": 12.5,
        "Count": 1
      },
      {
        "Start": 12,
        "End": 14,
        "Percent": 25,
        "Count": 1
      },
      {
        "Start": 14,
        "End": 16,
        "Percent": 75,
        "Count": 4
      },
      {
        "Start": 16,
        "End": 18,
        "Percent": 87.5,
        "Count": 1
      },
      {
        "Start": 500,
        "End": 700.257965,
        "Percent": 100,
        "Count": 1
      }
    ],
    "Percentiles": [
      {
        "Percentile": 50,
        "Value": 15
      },
      {
        "Percentile": 90,
        "Value": 540.051593
      },
      {
        "Percentile": 99,
        "Value": 684.2373278
      }
    ]
  }
}

Made thanks to https://github.com/miekg/dns (and https://github.com/fortio/fortio stats and logger)