Add cluster utilities

bin/cluster-deploy

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+../cluster/cluster-deploy.sh

bin/cluster-ping

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+../cluster/cluster-ping.sh

bin/cluster-run

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+../cluster/cluster-run.sh

bin/cluster-ssh

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+../cluster/cluster-ssh.sh

cluster/README

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+The cluster utilities are script allowing to work in parallel with a
+number of remote hosts, using utilities such as Parallel SSH (pssh) or
+fping. They all take as first and mandatory argument a host list name
+“NAME”; the list will be searched according to the following pattern:
+
+```  $HOME/.config/cluster/NAME.lst
+
+For example, one can call the cluster-ping.sh script typing:
+
+```  cluster-ping my_hosts
+
+to use the hosts' file $HOME/.config/cluster/my_hosts.lst
+
+The format of such a .lst file is one line per host name or IP address,
+for example:
+
+```
+192.168.42.1
+192.168.42.3
+priam
+```
+
+The scripts provided are detailed in the sequel.
+
+
+= cluster-ping.sh =
+
+Test the connectivity with the hosts of the list by sending them a ICMP
+echo packet.
+
+Dependency: fping
+
+
+= cluster-ssh.sh =
+
+Open a GNU Screen tab with an interactive SSH session for each host of
+the hosts' list. Must be run inside of an existing Screen.
+
+Dependencies: screen, ssh
+
+
+= cluster-run.sh =
+
+Run the same command on every host of the hosts' list.
+
+Dependency: parallel-ssh (pssh)
+
+
+= cluster-deploy.sh =
+
+Deploy one or more files in parallel on every host of the hosts' list.
+
+Dependency: parallel-scp (pscp)

cluster/cluster-deploy.sh

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+#!/bin/sh
+#
+# cluster-deploy.sh, Copyright © 2013 Matteo Cypriani <mcy@lm7.fr>
+#
+# This program is free software. It comes without any warranty, to
+# the extent permitted by applicable law. You can redistribute it
+# and/or modify it under the terms of the Do What The Fuck You Want
+# To Public License, Version 2, as published by Sam Hocevar. See
+# http://sam.zoy.org/wtfpl/COPYING for more details.
+#
+# Deploy files on a number of remote hosts using Parallel SCP.
+
+if [ $# -lt 2 ] ; then
+  echo "Usage: $0 <hosts_list> <file1> [file2 [...]]"
+  exit 1
+fi
+
+PSCP=$(command -v parallel-scp || command -v pscp.pssh || command -v pscp)
+if [ "$PSCP" = "" ] ; then
+  echo "Parallel SSH (pssh) is required for this script to work."
+  exit 2
+fi
+
+HOSTS="$HOME/.config/cluster/$1.lst"
+shift
+echo "Using file '$HOSTS' as hosts' list."
+
+for FILE in $@ ; do
+  echo "Deploying '$FILE'..."
+  $PSCP -r -l root -h "$HOSTS" -- "$FILE" /root
+done

cluster/cluster-ping.sh

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+#!/bin/sh
+#
+# cluster-ping.sh, Copyright © 2013 Matteo Cypriani <mcy@lm7.fr>
+#
+# This program is free software. It comes without any warranty, to
+# the extent permitted by applicable law. You can redistribute it
+# and/or modify it under the terms of the Do What The Fuck You Want
+# To Public License, Version 2, as published by Sam Hocevar. See
+# http://sam.zoy.org/wtfpl/COPYING for more details.
+#
+# Ping a list of remote hosts using fping.
+
+if [ $# -ne 1 ] ; then
+  echo "Usage: $0 <hosts_list>"
+  exit 1
+fi
+
+HOSTS="$HOME/.config/cluster/$1.lst"
+shift
+echo "Using file '$HOSTS' as hosts' list."
+
+exec fping $(cat "$HOSTS") 2>/dev/null

cluster/cluster-run.sh

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+#!/bin/sh
+#
+# cluster-run.sh, Copyright © 2013 Matteo Cypriani <mcy@lm7.fr>
+#
+# This program is free software. It comes without any warranty, to
+# the extent permitted by applicable law. You can redistribute it
+# and/or modify it under the terms of the Do What The Fuck You Want
+# To Public License, Version 2, as published by Sam Hocevar. See
+# http://sam.zoy.org/wtfpl/COPYING for more details.
+#
+# Run a command on a list of remote hosts using Parallel SSH.
+
+if [ $# -lt 2 ] ; then
+  echo "Usage: $0 <hosts_list> <command>"
+  exit 1
+fi
+
+PSSH=$(command -v parallel-ssh || command -v pssh)
+if [ "$PSSH" = "" ] ; then
+  echo "Parallel SSH (pssh) is required for this script to work."
+  exit 2
+fi
+
+HOSTS="$HOME/.config/cluster/$1.lst"
+shift
+echo "Using file '$HOSTS' as hosts' list."
+echo "Command: $@"
+
+exec $PSSH --print -l root -h "$HOSTS" -- $@

cluster/cluster-ssh.sh

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+#!/bin/sh
+#
+# cluster-ssh.sh, Copyright © 2013 Matteo Cypriani <mcy@lm7.fr>
+#
+# This program is free software. It comes without any warranty, to
+# the extent permitted by applicable law. You can redistribute it
+# and/or modify it under the terms of the Do What The Fuck You Want
+# To Public License, Version 2, as published by Sam Hocevar. See
+# http://sam.zoy.org/wtfpl/COPYING for more details.
+#
+# Open an SSH interactive shell on a list of remote hosts, opening one
+# GNU Screen tab per host.
+
+if [ $# -ne 1 ] ; then
+  echo "Usage: $0 <hosts_list>"
+  exit 1
+fi
+
+HOSTS="$HOME/.config/cluster/$1.lst"
+shift
+echo "Using file '$HOSTS' as hosts' list."
+
+for HOST in $(cat "$HOSTS") ; do
+  screen -t $HOST ssh root@$HOST
+done