68 lines
1.5 KiB
Bash
Executable File
68 lines
1.5 KiB
Bash
Executable File
#!/bin/sh
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#
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# cluster-run.sh, Copyright © 2013 Matteo Cypriani <mcy@lm7.fr>
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#
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# This program is free software. It comes without any warranty, to
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# the extent permitted by applicable law. You can redistribute it
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# and/or modify it under the terms of the Do What The Fuck You Want
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# To Public License, Version 2, as published by Sam Hocevar. See
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# http://sam.zoy.org/wtfpl/COPYING for more details.
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#
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# Run a command on a list of remote hosts using Parallel SSH.
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#set -x
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print_usage()
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{
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echo "Usage: $0 [-l login] <hosts_list> <command>"
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}
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# Do we have at least a host list and a command?
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if [ $# -lt 2 ] ; then
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print_usage >&2
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exit 1
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fi
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# Parse the optional arguments
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if [ "$1" = "-l" ] ; then
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LOGIN="$2"
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shift
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shift
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# Do we still have at least a host list and a command?
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if [ $# -lt 2 ] ; then
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print_usage
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exit 3
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fi
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fi
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# Check dependencies
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PSSH=$(command -v parallel-ssh || command -v pssh)
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if [ -z "$PSSH" ] ; then
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echo "Parallel SSH (pssh) is required for this script to work."
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exit 4
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fi
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# Hosts' list file
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if [ -z "$XDG_CONFIG_HOME" ] ; then
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XDG_CONFIG_HOME="$HOME/.config"
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fi
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HOSTS="$XDG_CONFIG_HOME/cluster/$1.lst"
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shift
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echo "Using file '$HOSTS' as hosts' list."
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if [ ! -f "$HOSTS" ] ; then
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echo "The hosts' list file doesn't exist or is not a regular file."
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exit 2
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fi
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# Login
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if [ -n "$LOGIN" ] ; then
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echo "Login: $LOGIN"
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LOGIN="-l $LOGIN"
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fi
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echo "Command:" "$@"
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# shellcheck disable=SC2086
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exec $PSSH --print $LOGIN -h "$HOSTS" -- "$@"
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