| # This script is run by the policy closed loop to generate traffic (DNS packets) to the DNS |
| # Usage: dnstraffic.sh <DNSIP> <RATE_PER_SEC> <ITERATIONS> |
| # The DNSIP is that of the DNS vLoadBalancer. |
| # The RATE_PER_SEC is the approximate number of nslookup requests generated per second. |
| # The ITERATIONS is roughly the number of seconds to run the test. Note that the Robot |
| # will kill this script after the validation is complete. |
| # The validation portion of the script has done a successful lookup, so the point of |
| # these requests is to generate DNS packets. We do not care about the results. The timeout |
| # of 1 second is to ensure we do not flood the process table with long waits |
| # We generate an approximate rate because we sleep for a full second so the RATE_PER_SEC |
| # should have some slop in it. We only need to drive this to 20+ per second, so a 35 |
| # per second should fall within the range to trigger the polciy check and prvide enough |
| # to validate even distribution without spawning a 3rd DNS |
| ITERATIONS=${ITERATIONS:-300} |
| for iter in `seq 1 $ITERATIONS`; |
| for i in `seq 1 $RATE_PER_SEC`; |
| nslookup -timeout=1 host2.dnsdemo.onap.org $DNSIP >/dev/null 2>&1 & |