NodeJS DNS debug script

• Dockerfile to push it to a AWS Lambda function
• index.js contains all the code run it in a loop in your terminal and filter the output a bit with jq like so:

while :; do node index.js >>data.json; tail -1 data.json | jq -c '{"nodejs": .nodejs.dns ,"trace": .tracert.totalTimeTrace, "dnsTrace": .dnsTrace.totalTimeDNSTrace, "recursive": .dnsquery.totalTimeRecursiveResolve, id} ';sleep 5; done

See the Checkly blog post here: https://blog.checklyhq.com/dns-debugging-deep-dive/ for more details.

Also check out my fork of slodns here: https://github.com/danielpaulus/slodns