Command tool written in Go to support testing of DNS servers.
The tool was written to load test vendor DNS solutions in a cloud environment and to assist in baselining records and RTT for pre/post migration.
Usage: dns-test
-clients int
Number of client Go Routines to spawn (default 1)
-debug
Enable debug messages
-delay int
Delay between client requests in ms. Use 0 for load test - with CAUTION not to DOS your prod systems! (default 100)
-duration int
How long to run the test for in ms. Negative number will result in one iteration through the test inputs. (default -1)
-input string
CSV input file for queries, rows formatted as <type>,<name_to_query>,<[expected_answer0..n]>
-json
Ouput in json format
-server string
DNS server to target - format '10.1.1.1:53'
-validate
Validate the 1st response matches the expected set of responses.
Output:
The test output will show raw stats per client and overall, followed by
summary data.
Errors: (count) the server did not respond or there was a unexpected error.
Noanswer: (count) the server response was recieved by there was no answers to the query.
Success: (count) the server response had answers
Verified: (count) the server response was validated against the expected result set
Incorrect: (count) the server response was not found in the expected result set
QPS: queries per second for the test run
RTT-min: minimum round trip time observed
RTT-max: maximum round trip time observed
RTT-avg: average round trip time observed
Test duration(ms): overall test duration
Binaries are available from releases
Single iteration of the input list and validate results.
[admin@testserver ~]$ ./dns-test -input inputs.csv -server 192.168.1.14:53 -validate
Client Results
[{0 0 3 0 0 0 0 3 0}]
Overall Results
{0 0 3 0 0 0 0 3 0}
--------------------------------------------------------
Result Summary
--------------------------------------------------------
Errors: 0
Noanswer: 0
Success: 3
Verified: 3
Incorrect: 0
QPS: 9.947639
RTT-min: 0
RTT-max: 0
RTT-avg: 0
Test duration(ms): 301Load test for 30 seconds with 20 clients as fast as you can (delay 0).
[admin@testserver ~]$ ./dns-test -input inputs.csv -server 192.168.1.14:53 -duration 30000 -clients 20 -delay 0
Client Results
[{0 0 135553 602 0 12 0 0 0} {0 0 135913 537 0 12 0 0 0} {0 0 135537 606 0 12 0 0 0} {0 0 136019 579 0 12 0 0 0} {0 0 135852 579 0 12 0 0 0} {0 0 135694 593 0 12 0 0 0} {0 0 135680 613 0 12 0 0 0} {0 0 136094 573 0 12 0 0 0} {0 0 135892 610 0 12 0 0 0} {0 0 135790 587 0 12 0 0 0} {0 0 135951 577 0 12 0 0 0} {0 0 135821 551 0 12 0 0 0} {0 0 135856 573 0 12 0 0 0} {0 0 135634 617 0 12 0 0 0} {0 0 135883 584 0 16 0 0 0} {0 0 135632 587 0 12 0 0 0} {0 0 135607 628 0 12 0 0 0} {0 0 135764 577 0 12 0 0 0} {0 0 135722 561 0 12 0 0 0} {0 0 135640 612 0 12 0 0 0}]
Overall Results
{0 0 2715534 11746 0 16 0 0 0}
--------------------------------------------------------
Result Summary
--------------------------------------------------------
Errors: 0
Noanswer: 0
Success: 2715534
Verified: 0
Incorrect: 0
QPS: 90517.454106
RTT-min: 0
RTT-max: 16
RTT-avg: 0
Test duration(ms): 30000GOOS=linux GOARCH=amd64 go build -o bin/dns-test
GOOS=windows GOARCH=amd64 go build -o bin/dns-test.exe
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