I want to have an AWS region where everything breaks with high frequency

Re:I want to have an AWS region where everything breaks with... by peterwwillis on Monday August 10, 2020 @06:29PM (#24114844)

> Basically I want an API where I can torture an EC2 instance to see what happens to it, for science!

  # cat > dropme.sh <<'EOFILE'
  #!/bin/sh
  set -eu
  read -r SLEEP
  tmp=`mktemp` ; tmp6=`mktemp`
  iptables-save > $tmp
  ip6tables-save > $tmp6
  for t in iptables ip6tables ; do 
    for c in INPUT OUTPUT FORWARD ; do $t -P $c DROP ; done
    $t -t nat -F ; $t -t mangle -F ; $t -F ; $t -X
  done
  sleep "$SLEEP"
  iptables-restore < $tmp
  ip6tables-restore < $tmp6
  rm -f $tmp $tmp6
  EOFILE
  # chmod 755 dropme.sh
  # ncat -k -l -c ./dropme.sh $(ifconfig eth0 | grep 'inet ' | awk '{print $2}') 12345 &
  # echo "60" | ncat -v $(ifconfig eth0 | grep 'inet ' | awk '{print $2}') 12345

If you're lucky the existing connections won't even die, but the box will be offline for 60 seconds.

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Re:I want to have an AWS region where everything breaks with... by blaser-waffle on Tuesday August 11, 2020 @02:07PM (#24123595)

Not a bad script, but it's basically going "shields up!", blocking all traffic, and then taking them down. Definitely useful, but won't test for the hard stuff, like if my DB was in the middle of something and then died, scrambling my data. What's that gonna look like on reboot?

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