sosreport collection in parallel

sos-collect.sh

#!/bin/bash
set -ex
mkdir sosreports || /bin/true
declare -A pids

nodes=$(openstack --os-cloud undercloud server list -f value -c Networks |cut -f2 -d\=)
for i in $nodes; do
        echo "Collecting for $i"
        ssh $i 'sudo sosreport --quiet --batch; sudo chmod 644 /var/tmp/sos*xz' &
        pids["$i"]="$!"
done
echo "Waiting for all nodes to complete: ${!pids[@]}"
for i in $nodes; do
        wait "${pids[$i]}"
done
echo "Fetch all sosreports"
for i in $nodes; do
        scp $i:/var/tmp/sos*xz sosreports/
done