[Linux-HA] Learning the CIB

[Pavol Gono]

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? ) ?
>
> 2) There are only 4 configuration tags: (1) constraints, (2) crm_config and
> (3) resources and the (4) nodes. Is that right ?

yes

>
> 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

>
> 5) What is the difference between <atributes> and <instance_atributes> ??
>
> 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

>
> 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.

>
> ... Vinicius Menezes ...
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>