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doc: Add nodestatus command to the ctdb manpage

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Signed-off-by: Martin Schwenke <martin@meltin.net>

(This used to be ctdb commit 4369c8e6ead9062ef7855ada375df74262acf925)
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Martin Schwenke 2013-06-21 14:32:50 +10:00 committed by Amitay Isaacs
parent 51150c7727
commit 017b966669
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ctdb/doc/ctdb.1.xml
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@ -324,6 +324,71 @@ Recovery master:0
</screen>
</refsect2>
<refsect2><title>nodestatus [&lt;nodespec&gt;]</title>
<para>
This command is similar to the <command>status</command>
command. It displays the "node status" subset of output. The
main differences are:
</para>
<itemizedlist>
<listitem>
<para>
The exit code is the bitwise-OR of the flags for each
specified node, while <command>ctdb status</command> exits
with 0 if it was able to retrieve status for all nodes.
</para>
</listitem>
<listitem>
<para>
<command>ctdb status</command> provides status information
for all nodes. <command>ctdb nodestatus</command>
defaults to providing status for only the current node.
If &lt;nodespec&gt; is provided then status is given for
the indicated node(s).
</para>
<para>
By default, <command>ctdb nodestatus</command> gathers
status from the local node. However, if invoked with "-n
all" (or similar) then status is gathered from the given
node(s). In particular <command>ctdb nodestatus
all</command> and <command>ctdb nodestatus -n
all</command> will produce different output. It is
possible to provide 2 different nodespecs (with and
without "-n") but the output is usually confusing!
</para>
</listitem>
</itemizedlist>
<para>
A common invocation in scripts is <command>ctdb nodestatus
all</command> to check whether all nodes in a cluster are
healthy.
</para>
<para>
Example: ctdb nodestatus
</para>
<para>Example output:</para>
<screen format="linespecific">
# ctdb nodestatus
pnn:0 10.0.0.30 OK (THIS NODE)
</screen>
<para>
Example: ctdb nodestatus all
</para>
<para>Example output:</para>
<screen format="linespecific">
# ctdb nodestatus all
Number of nodes:2
pnn:0 10.0.0.30 OK (THIS NODE)
pnn:1 10.0.0.31 OK
</screen>
</refsect2>
<refsect2><title>recmaster</title>
<para>
This command shows the pnn of the node which is currently the recmaster.