DNSping
DNS Ping checks packet loss and latency issues with DNS servers
Installation
If you have golang, easiest install is go install fortio.org/dnsping@latest
Or with docker docker run fortio/dnsping ... (we have multi architecture images)
Or brew custom tap brew install fortio/tap/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 v1.1.5 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)