diff --git a/scripts/my-fail-env/ab-fail-env.sh b/scripts/my-fail-env/ab-fail-env.sh
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+++ b/scripts/my-fail-env/ab-fail-env.sh
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+#!/bin/bash
+#
+# ab-fail-env.sh (Adrian Böckenkamp)
+# default values for several Fail* environment variables
+#
+
+# A whitespace-separated list of hosts to rsync the experiment data to.  This
+# is not necessarily the same list as FAIL_EXPERIMENT_HOSTS (see below), as
+# many hosts may share their homes via NFS.
+export FAIL_DISTRIBUTE_HOSTS=${FAIL_DISTRIBUTE_HOSTS:='kos plutonium'}
+
+# A whitespace-separated list of hosts to run experiments on.  If the host name
+# is followed by a ':' and a number, this specifies the number of clients to
+# run on that host (defaults to #CPUs+1).
+export FAIL_EXPERIMENT_HOSTS=${FAIL_EXPERIMENT_HOSTS:="plutonium uran kos:6 bohrium polonium radon $(for hostnr in $(seq 100 254); do echo fiws$hostnr; done)"}
+
+# A homedir-relative directory on the distribution hosts where all necessary
+# Fail* ingredients reside (see multiple-clients.sh).
+export FAIL_EXPERIMENT_TARGETDIR=.fail-experiment