<?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>