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#!/bin/bash
#
# Execute commands on multiple nodes.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public
# License along with this program. If not, see
# <http://www.gnu.org/licenses/>.
# Issue commands with pssh
function mass_pssh {
hydra_install_package pssh
parallel-ssh -P -p 4 -t 0 -h $TMPWORK sudo $COMMAND
}
# Issue commands with a for loop
function mass_loop {
for node in `cat $TMPWORK`; do
echo "Connecting to $node..."
$HYDRA_CONNECT $node sudo $COMMAND
done
}
# Issue commands with dish
function mass_dish {
hydra_install_package dish
dish -f -p /dev/null -e "sudo $COMMAND" -g $TMPWORK
}
# Issue commands with mussh
function mass_mussh {
hydra_install_package mussh
mussh -H $TMPWORK -c "sudo $COMMAND"
}
# Issue commands with ansible
function mass_ansible {
hydra_install_package ansible
ansible -i $TMPWORK all -f 1 --sudo -a "$COMMAND"
}
# Set nodes
function mass_set_nodes {
hydra_set_tmpfile nodes
hydra $HYDRA nodes $1 > $TMPWORK
}
# Execute command on localhost
function mass_exec_localhost {
if grep -q -e "^$LOCAL$" $TMPWORK; then
# Remove localhost from node list
grep -v -e "^$LOCAL$" $TMPWORK > $TMPWORK.tmp
mv $TMPWORK.tmp $TMPWORK
echo "Issuing command on localhost..."
$SUDO $COMMAND
fi
}
# Load
source $APP_BASE/lib/hydra/functions || exit 1
hydra_config_load
# Command line arguments
BASENAME="`basename $0`"
COMMAND="$*"
# Initial node list
BASEDIR="/tmp"
LOCAL="`facter fqdn`"
mass_set_nodes
# Set sudo config
if [ "$WHOAMI" != 'root' ]; then
sudo="sudo"
else
echo "Sorry, cannot run as root"
exit 1
fi
# Validation
if [ "$BASENAME" == "mass-upgrade" ]; then
COMMAND="DEBIAN_FRONTEND=noninteractive hydractl upgrade clean"
elif [ "$BASENAME" == "mass-web" ]; then
mass_set_nodes web
fi
# Execute commands in hosts
echo "Issuing $COMMAND on multiple nodes..."
mass_exec_localhost
mass_ansible
hydra_unset_tmpfile $TMPWORK
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