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#!/bin/bash
#
# Execute commands on multiple nodes.
#
# Issue commands with pssh
# See http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=549117
function mass_pssh {
hydra_set_tmpfile nodes
hydra $HYDRA nodes > $TMPWORK
parallel-ssh -h $TMPWORK -p 4 $COMMAND
hydra_unset_tmpfile $TMPWORK
}
# Issue commands with a for loop
function mass_loop {
for node in $NODES; do
echo "Issuing $COMMAND on multiple nodes..."
echo "Connecting to $node..."
$HYDRA_CONNECT $node sudo $COMMAND
done
}
# Load
source $APP_BASE/lib/hydra/functions || exit 1
hydra_config_load
# Command line arguments
BASENAME="`basename $0`"
COMMAND="$*"
# Initial node list
NODES="`hydra $HYDRA nodes`"
# Validation
if [ "$BASENAME" == "mass-update" ]; then
COMMAND="aptitude update"
elif [ "$BASENAME" == "mass-update" ]; then
COMMAND="aptitude safe-upgrade"
elif [ "$BASENAME" == "mass-web" ]; then
NODES="`hydra $HYDRA nodes web`"
fi
# Execute commands in hosts
mass_loop $COMMAND
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