para-vagrant.sh

#!/bin/sh

# concurrency is hard, let's have a beer

# any valid parallel argument will work here, such as -P x.
MAX_PROCS="--use-cpus-instead-of-cores"

parallel_provision() {
    while read box; do
        echo $box
     done | parallel $MAX_PROCS -I"BOX" -q \
        sh -c 'LOGFILE="logs/BOX.out.txt" ;                                 \
                printf  "[BOX] Provisioning. Log: $LOGFILE, Result: " ;     \
                vagrant provision BOX >$LOGFILE 2>&1 ;                      \
                RETVAL=$? ;                                                 \
                if [ $RETVAL -gt 0 ]; then                                  \
                    echo " FAILURE";                                        \
                    tail -12 $LOGFILE | sed -e "s/^/[BOX]  /g";             \
                    echo "[BOX] ---------------------------------------------------------------------------";   \
                    echo "FAILURE ec=$RETVAL" >>$LOGFILE;                   \
                else                                                        \
                    echo " SUCCESS";                                        \
                    tail -5 $LOGFILE | sed -e "s/^/[BOX]  /g";              \
                    echo "[BOX] ---------------------------------------------------------------------------";   \
                    echo "SUCCESS" >>$LOGFILE;                              \
                fi;                                                         \
                exit $RETVAL'

    failures=$(egrep  '^FAILURE' logs/*.out.txt | sed -e 's/^logs\///' -e 's/\.out\.txt:.*//' -e 's/^/  /')
    successes=$(egrep '^SUCCESS' logs/*.out.txt | sed -e 's/^logs\///' -e 's/\.out\.txt:.*//' -e 's/^/  /')

    echo
    echo "Failures:"
    echo '------------------'
    echo "$failures"
    echo
    echo "Successes:"
    echo '------------------'
    echo "$successes"
}

## -- main -- ##

# cleanup old logs
mkdir logs >/dev/null 2>&1 
rm -f logs/*.out.txt

# start boxes sequentially to avoid vbox explosions
echo ' ==> Calling "vagrant up" to boot the boxes...'
vagrant up --no-provision

# but run provision tasks in parallel
echo " ==> Beginning parallel 'vagrant provision' processes ..."
cat <<EOF | parallel_provision
centos_5_64
centos_5_32
ubuntu_1004_32
ubuntu_1004_64
EOF