openstack/openstack-manuals
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Merge "Add note regarding local port range"

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2014-06-11 17:17:11 +00:00
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doc/config-reference/app_firewalls-ports.xml
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@@ -20,4 +20,14 @@
<para>This table lists the ports that other OpenStack components
use:</para>
<xi:include href="table_default-ports-peripheral-services.xml"/>
<para>On some deployments, the default port used by a service
may fall within the defined local port range of a host. To
check a host's local port range:</para>
<screen><prompt>$</prompt> <userinput>sysctl -a | grep ip_local_port_range</userinput></screen>
<para>If a service's default port falls within this range, run
the following program to check if the port has already been
assigned to another application:</para>
<screen><prompt>$</prompt> <userinput>lsof -i :<replaceable>PORT</replaceable></userinput></screen>
<para>Configure the service to use a different port if the
default port is already being used by another application.</para>
</appendix>