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<?xml version="1.0" encoding="iso-8859-1"?>
<!DOCTYPE refentry PUBLIC "-//Samba-Team//DTD DocBook V4.2-Based Variant V1.0//EN" "http://www.samba.org/samba/DTD/samba-doc">
<refentry id="onnode.1">
<refmeta>
<refentrytitle>onnode</refentrytitle>
<manvolnum>1</manvolnum>
</refmeta>
<refnamediv>
<refname>onnode</refname>
<refpurpose>run commands on ctdb nodes</refpurpose>
</refnamediv>
<refsynopsisdiv>
<cmdsynopsis>
<command>onnode NODE COMMAND ...</command>
</cmdsynopsis>
</refsynopsisdiv>
<refsect1><title>DESCRIPTION</title>
<para>
onnode is a utility to run commands on a specific node of a CTDB
cluster, or on all nodes.
</para>
<para>
The NODE option specifies which node to run a command on. You
can specify a numeric node number (from 0 to N-1) or the special
node 'all'.
</para>
<para>
The COMMAND can be any shell command. The onnode utility uses
ssh or rsh to connect to the remote nodes and run the command.
</para>
<para>
If the COMMAND starts with a /, then the command is run via the
'at' service. Otherwise the command is run in the foreground.
</para>
</refsect1>
<refsect1><title>EXAMPLES</title>
<para>
The following command would show the process ID of ctdb on all nodes
</para>
<screen format="linespecific">
onnode all pidof ctdbd
</screen>
<para>
The following command would show the last 5 lines of log on each
node, preceded by the nodes hostname
</para>
<screen format="linespecific">
onnode all "hostname; tail -5 /var/log/log.ctdb"
</screen>
<para>
The following command would restart the ctdb service on all nodes.
</para>
<screen format="linespecific">
onnode all service ctdb restart
</screen>
</refsect1>
<refsect1><title>SEE ALSO</title>
<para>
ctdbd(1), ctdb(1), <ulink url="http://ctdb.samba.org/"/>
</para>
</refsect1>
<refsect1><title>COPYRIGHT/LICENSE</title>
<literallayout>
Copyright (C) Andrew Tridgell 2007
Copyright (C) Ronnie sahlberg 2007
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU 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
General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, see http://www.gnu.org/licenses/.
</literallayout>
</refsect1>
</refentry>
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