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<html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>onnode</title><meta name="generator" content="DocBook XSL Stylesheets V1.72.0"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="refentry" lang="en"><a name="onnode.1"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>onnode — run commands on ctdb nodes</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="cmdsynopsis"><p><code class="command">onnode NODE COMMAND ...</code> </p></div></div><div class="refsect1" lang="en"><a name="id2490457"></a><h2>DESCRIPTION</h2><p>
onnode is a utility to run commands on a specific node of a CTDB
cluster, or on all nodes.
</p><p>
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'.
</p><p>
The COMMAND can be any shell command. The onnode utility uses
ssh or rsh to connect to the remote nodes and run the command.
</p><p>
If the COMMAND starts with a /, then the command is run via the
'at' service. Otherwise the command is run in the foreground.
</p></div><div class="refsect1" lang="en"><a name="id2487793"></a><h2>EXAMPLES</h2><p>
The following command would show the process ID of ctdb on all nodes
</p><pre class="screen">
onnode all pidof ctdbd
</pre><p>
The following command would show the last 5 lines of log on each
node, preceded by the nodes hostname
</p><pre class="screen">
onnode all "hostname; tail -5 /var/log/log.ctdb"
</pre><p>
The following command would restart the ctdb service on all nodes.
</p><pre class="screen">
onnode all service ctdb restart
</pre></div><div class="refsect1" lang="en"><a name="id2488691"></a><h2>SEE ALSO</h2><p>
ctdbd(1), ctdb(1), <a href="http://ctdb.samba.org/" target="_top">http://ctdb.samba.org/</a>
</p></div><div class="refsect1" lang="en"><a name="id2488704"></a><h2>COPYRIGHT/LICENSE</h2><div class="literallayout"><p><br>
Copyright�(C)�Andrew�Tridgell�2007<br>
Copyright�(C)�Ronnie�sahlberg�2007<br>
<br>
This�program�is�free�software;�you�can�redistribute�it�and/or�modify<br>
it�under�the�terms�of�the�GNU�General�Public�License�as�published�by<br>
the�Free�Software�Foundation;�either�version�3�of�the�License,�or�(at<br>
your�option)�any�later�version.<br>
<br>
This�program�is�distributed�in�the�hope�that�it�will�be�useful,�but<br>
WITHOUT�ANY�WARRANTY;�without�even�the�implied�warranty�of<br>
MERCHANTABILITY�or�FITNESS�FOR�A�PARTICULAR�PURPOSE.��See�the�GNU<br>
General�Public�License�for�more�details.<br>
<br>
You�should�have�received�a�copy�of�the�GNU�General�Public�License<br>
along�with�this�program;�if�not,�see�http://www.gnu.org/licenses/.<br>
</p></div></div></div></body></html>
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