[Linux-HA] Learning the CIB

[vini.bill at gmail.com]

Hi guys.

Sorry for not sending anything ( my home HD died and I had to replace it ),
this weekend. Fortunantely what I had made untill now was a basic
reorganization of this page:
http://www.linux-ha.org/ClusterResourceManager/DTD1.0/Annotated , and not
soo important.

Now I intend to document parts of the CIB configuration options that are
somehow obscure throughout the Linux-HA documentation. So... my questions
is:

- In the primitve directive we have a "type" property which should receive
some expected values. Wich are these values? I'm looking everywhere on the
Linux-HA site and still haven't found anything.

Today I`ll probably ask more about the constraints, rules ans expressions
options.

Vinicius Menezes


On 1/6/07, Andrew Beekhof <beekhof at gmail.com> wrote:
>
> On 1/5/07, Pavol Gono <palo.gono at gmail.com> wrote:
> > Hi
> >
> > Nice reading is in source tree:
> > crm/crm-1.0.dtd
> > crm/crm.txt (chapter 5)
> > Just take the latest sources from http://hg.linux-ha.org/dev/. Web
> > page http://www.linux-ha.org/ClusterResourceManager/DTD1.0/Annotated
> > is maybe not quite up-to-date.
> >
> > I'll answer what is simple to answer :)
> >
> >
> > On 1/5/07, vini.bill at gmail.com <vini.bill at gmail.com> wrote:
> > > Hi guys.
> > >
> > >     As I said in a previous mail, I'm Writing a document teaching how
> to use
> > > the CIB Tags, how to place them, what they mean and something more
> that I
> > > haven't foreseen. I intend to contribute it back to the project. I'd
> like to
> > > discuss some topics that I haven't understood very well so as I can
> write
> > > about them. I'll also make some minor comparsions with XHTML to make
> things
> > > a bit clearer to me but I won't make these on the final text.
> > >
> > >     Today, before leaving work I'll seek somewhere to post it so you
> can
> > > take a look at my progress. It`ll be in a Wiki format since I`m going
> to
> > > publish it on the wiki we have here and to make easier to add to the
> main
> > > documentation.
> > >
> > > 1) Is there any directive that isn't contained on the <cib> </cib> ?
> Can I
> > > create groups of configurations ( if yes, what would be the necessity
> to
> > > have it? ) ?
>
> i dont understand the question
>
> > >
> > > 2) There are only 4 configuration tags: (1) constraints, (2)
> crm_config and
> > > (3) resources and the (4) nodes. Is that right ?
> >
> > yes
>
> correct.  and how do we know this?
> we know this because the DTD says so:
>   <!ELEMENT configuration (crm_config, nodes, resources, constraints)>
>
> I suggest starting with wikipedia's entry on DTDs:
>     http://en.wikipedia.org/wiki/Document_Type_Definition
>
> >
> > >
> > > 3) What does the empty <nodes/> tag mean? The CRM daemon will fill in
> every
> > > node automagically ?
> >
> > yes, user doesn't need to fill in nodes tag.
> >
> > >
> > > 4) What do operations do in a primitive?
> >
> > e.g. you can tell heartbeat to monitor your resource
>
> or override various defaults... like what action to take if a start
> action fails (or how long to wait before deciding that it failed)
>
> >
> > >
> > > 5) What is the difference between <atributes> and <instance_atributes>
> ??
>
> more information?
>
> > > 6) Is there any tag missing on this page (
> > > http://www.linux-ha.org/ClusterResourceManager/DTD1.0/Annotated ) that
> I
> > > should look for by myself ?
> >
> > See crm/crm-1.0.dtd
>
> correct, the online version seems to be somewhat out of date
>
> > > 7) What does the empty <status/> tag mean?
> >
> > status tag is filled in by heartbeat at runtime, user shouldn't write
> > to it. The command "cibadmin -Ql" is good for reading this tag.
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>



-- 
... Vinicius Menezes ...