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<!doctype refentry PUBLIC "-//OASIS//DTD DocBook V4.1//EN" [ |
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<!-- Please adjust the date whenever revising the manpage. --> |
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<!ENTITY dhdate "<date>June 08, 2010</date>"> |
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<!-- SECTION should be 1-8, maybe w/ subsection other parameters are |
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allowed: see man(7), man(1). --> |
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<!ENTITY dhsection "<manvolnum>8</manvolnum>"> |
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<!ENTITY dhucpackage "<refentrytitle>ganeti-noded</refentrytitle>"> |
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<!ENTITY dhpackage "ganeti-noded"> |
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<!ENTITY debian "<productname>Debian</productname>"> |
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<!ENTITY gnu "<acronym>GNU</acronym>"> |
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<!ENTITY gpl "&gnu; <acronym>GPL</acronym>"> |
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<!ENTITY footer SYSTEM "footer.sgml"> |
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]> |
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|
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<refentry> |
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<refentryinfo> |
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<copyright> |
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<year>2006</year> |
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<year>2007</year> |
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<year>2008</year> |
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<year>2009</year> |
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<year>2010</year> |
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<holder>Google Inc.</holder> |
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</copyright> |
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&dhdate; |
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</refentryinfo> |
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<refmeta> |
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&dhucpackage; |
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|
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&dhsection; |
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<refmiscinfo>Ganeti 2.2</refmiscinfo> |
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</refmeta> |
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<refnamediv> |
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<refname>&dhpackage;</refname> |
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|
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<refpurpose>Ganeti node daemon</refpurpose> |
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</refnamediv> |
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<refsynopsisdiv> |
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<cmdsynopsis> |
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<command>&dhpackage; </command> |
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<arg>-f</arg> |
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<arg>-d</arg> |
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|
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</cmdsynopsis> |
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</refsynopsisdiv> |
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<refsect1> |
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<title>DESCRIPTION</title> |
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|
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<para> |
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The <command>&dhpackage;</command> is the daemon which is |
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responsible for the node functions in the Ganeti system. |
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</para> |
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|
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<para> |
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By default, in order to be able to support features such as node |
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powercycling even on systems with a very damaged root disk, |
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<command>ganeti-noded</command> locks itself in RAM using |
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<citerefentry> |
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<refentrytitle>mlockall</refentrytitle> |
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<manvolnum>2</manvolnum> |
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</citerefentry>. You can disable this feature by passing in the |
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<option>--no-mlock</option> to the daemon. |
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</para> |
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|
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<para> |
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For testing purposes, you can give the <option>-f</option> |
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option and the program won't detach from the running terminal. |
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</para> |
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|
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<para> |
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Debug-level message can be activated by giving the |
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<option>-d</option> option. |
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</para> |
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|
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<para> |
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Logging to syslog, rather than its own log file, can be enabled by |
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passing in the <option>--syslog</option> option. |
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</para> |
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|
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<para> |
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The <command>ganeti-noded</command> daemon listens to port 1811 TCP, on |
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all interfaces, by default. This can be overridden by an entry the |
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services database (<filename>/etc/services</filename>) or by passing the |
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<option>-p</option> option. The <option>-b</option> option can be used to |
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specify the address to bind to (defaults to 0.0.0.0). |
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</para> |
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|
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<para> |
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Ganeti noded communication is protected via SSL, with a key generated at |
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cluster init time. This can be disabled with the |
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<option>--no-ssl</option> option, or a different SSL key and certificate |
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can be specified using the <option>-K</option> and <option>-C</option> |
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options. |
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</para> |
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|
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<refsect2> |
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<title>ROLE</title> |
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<para> |
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The role of the node daemon is to do almost all the actions |
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that change the state of the node. Things like creating disks |
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for instances, activating disks, starting/stopping instance |
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and so on are done via the node daemon. |
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</para> |
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|
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<para> |
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Also, in some cases the startup/shutdown of the master daemon |
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are done via the node daemon, and the cluster IP address is |
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also added/removed to the master node via it. |
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</para> |
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|
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<para> |
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If the node daemon is stopped, the instances are not affected, |
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but the master won't be able to talk to that node. |
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</para> |
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</refsect2> |
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|
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<refsect2> |
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<title>COMMUNICATION PROTOCOL</title> |
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<para> |
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Currently the master-node RPC is done using a simple RPC protocol built |
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using JSON over HTTP(S). |
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</para> |
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</refsect2> |
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|
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</refsect1> |
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|
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&footer; |
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|
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</refentry> |
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<!-- Keep this comment at the end of the file |
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Local variables: |
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mode: sgml |
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sgml-omittag:t |
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sgml-shorttag:t |
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sgml-minimize-attributes:nil |
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sgml-always-quote-attributes:t |
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sgml-indent-step:2 |
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sgml-indent-data:t |
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sgml-parent-document:nil |
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sgml-default-dtd-file:nil |
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sgml-exposed-tags:nil |
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sgml-local-catalogs:nil |
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sgml-local-ecat-files:nil |
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End: |
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--> |