[Linux-HA] Learning the CIB

Andrew Beekhof beekhof at gmail.com
Mon Jan 8 11:59:21 MST 2007 

On 1/8/07, vini.bill at gmail.com <vini.bill at gmail.com> wrote:
> indeed... a slash was missed on the nvpair directive =/. You read my mind! I
> just copy and pasted it. Now I got some strange ( but not bizarre ) errors.
> Take a look at it:
>
>
> crm_verify[5133]: 2007/01/08_15:05:13 ERROR: do_id_check:xml.c Detected
> <atributes.../> object without an ID. Assigned:
> 860918f8-41f7-45c1-8647-6a9e8967f5a7
> crm_verify[5133]: 2007/01/08_15:05:13 ERROR: do_id_check:xml.c Detected
> <instance_atributes.../> object without an ID. Assigned:
> 7519f042-6c92-4043-973d-d3c025daf28f
> crm_verify[5133]: 2007/01/08_15:05:13 ERROR: do_id_check:xml.c Detected
> <primitive.../> object without an ID. Assigned:
> 0ecf7e01-7918-4e86-be84-23b77f64bef6
> crm_verify[5133]: 2007/01/08_15:05:13 ERROR: do_id_check:xml.c Detected
> <instance_attributes.../> object without an ID. Assigned:
> e699110b-3f3a-41ac-bfae-3b7b34883698
> crm_verify[5133]: 2007/01/08_15:05:13 ERROR: do_id_check:xml.c Detected
> <atributes.../> object without an ID. Assigned:
> 611a407b-9d1b-4bd0-bd50-dd0b42b7120b
> crm_verify[5133]: 2007/01/08_15:05:13 ERROR: do_id_check:xml.c Detected
> <instance_atributes.../> object without an ID. Assigned:
> 0a37ac6c-e662-4736-81a0-2a20aa6c207d
> crm_verify[5133]: 2007/01/08_15:05:13 ERROR: do_id_check:xml.c Detected
> <primitive.../> object without an ID. Assigned:
> 2a1f1310-e715-40f6-8d96-f7b1c6245255
> crm_verify[5133]: 2007/01/08_15:05:13 ERROR: do_id_check:xml.c Detected
> <instance_attributes.../> object without an ID. Assigned:
> 62ed87c7-08ae-43a0-8997-5916e868e5ba
> crm_verify[5133]: 2007/01/08_15:05:13 ERROR: main:crm_verify.c ID Check
> failed
>
> The CRMd is actually atributing default values... so... they're not actually
> errors, but warnings right?

no, they're pretty fatal (as in we wont load such a configuration at runtime)

the reason is more apparent when you consider multiple machines all
starting up and assigning their own values for "id"... then trying to
figure out what is what

>
>
> On 1/8/07, Andreas Kurz <andreas.kurz at gmail.com> wrote:
> >
> > Hello,
> >
> > You have some syntax errors in your cib:
> >
> > --- cib_vini.xml        2007-01-08 17:50:33.831573895 +0100
> > +++ cib_vini.xml.org    2007-01-08 17:49:47.770369431 +0100
> > @@ -30,7 +30,7 @@
> >                         -->
> >                         <instance_atributes>
> >                                 <atributes>
> > -                                       <nvpair id="IPaddr_1_ip"
> > value="192.168.0.143" name="DB01_IPaddr"/>
> > +                                       <nvpair id="IPaddr_1_ip"
> > value="192.168.0.143" name="DB01_IPaddr">
> >                                 </atributes>
> >                         </instance_atributes>
> >                         <!--
> > @@ -84,7 +84,7 @@
> >                 <primitive class="ocf" provider="hertbeat">
> >                         <instance_atributes>
> >                                 <atributes>
> > -                                       <nvpair id="IPaddr_2_ip"
> > value="192.168.0.143" name="DB02_IPaddr"/>
> > +                                       <nvpair id="IPaddr_2_ip"
> > value="192.168.0.143" name="DB02_IPaddr">
> >                                 </atributes>
> >                         </instance_atributes>
> >                         <operations>
> >
> > Try running "xmllint cib_vini.xml" ... I like that tool for finding
> > lost slashes and other cut & paste errors ;-)
> >
> > Regards,
> > Andreas
> >
> >
> > On 1/8/07, vini.bill at gmail.com <vini.bill at gmail.com> wrote:
> > > sorry, really sorry. forgot to send the weird_output file.
> > >
> > > Vinicius Menezes
> > >
> > > On 1/8/07, vini.bill at gmail.com <vini.bill at gmail.com> wrote:
> > > >
> > > > Well... I've got one more question. I created a example file and seems
> > to
> > > > be correct ( it's the cib_vini.xml ).  But when I try to verify it
> > with
> > > > "crm_verify --xml-file" I get really weird erros ( it's in the
> > > > weird_output.txt ). I think it's weird because it says ( at the very
> > first
> > > > line ):
> > > >
> > > > "crm_verify[5019]: 2007/01/08_14:27:01 ERROR: parse_xml:xml.cExpected:
> > > > nvpair"
> > > >
> > > > But it's impossible to define a operation with nvpair. What's wrong
> > with
> > > > it? Am I misunderstanding something?
> > > >
> > > > Vinicius Menezes
> > > >
> > > >
> > > > But when I use the crm_verify I get really weird erros ( such as
> > > >
> > > > On 1/8/07, Andrew Beekhof < beekhof at gmail.com> wrote:
> > > > >
> > > > > On 1/8/07, vini.bill at gmail.com <vini.bill at gmail.com> wrote:
> > > > > > 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.
> > > > >
> > > > > its the "type" of resource you want. ie. IPaddr, FileSystem, etc.
> > > > > there is no complete list because people can write their own
> > > > >
> > > > > when class=ocf: anything in /usr/lib/ocf/resource.d//$provider/
> > > > > when class=lsb: anything in /etc/init.d
> > > > > when class=heartbeat anything in /etc/ha.d/resource.d
> > > > >
> > > > > >
> > > > > > 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.
> > > > > > > _______________________________________________
> > > > > > > Linux-HA mailing list
> > > > > > > Linux-HA at lists.linux-ha.org
> > > > > > > http://lists.linux-ha.org/mailman/listinfo/linux-ha
> > > > > > > See also: http://linux-ha.org/ReportingProblems
> > > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > --
> > > > > > ... Vinicius Menezes ...
> > > > > > _______________________________________________
> > > > > > Linux-HA mailing list
> > > > > > Linux-HA at lists.linux-ha.org
> > > > > > http://lists.linux-ha.org/mailman/listinfo/linux-ha
> > > > > > See also: http://linux-ha.org/ReportingProblems
> > > > > >
> > > > > _______________________________________________
> > > > > Linux-HA mailing list
> > > > > Linux-HA at lists.linux-ha.org
> > > > > http://lists.linux-ha.org/mailman/listinfo/linux-ha
> > > > > See also: http://linux-ha.org/ReportingProblems
> > > > >
> > > >
> > > >
> > > >
> > > > --
> > > > ... Vinicius Menezes ...
> > > >
> > >
> > >
> > >
> > > --
> > > ... Vinicius Menezes ...
> > >
> > >
> > > _______________________________________________
> > > Linux-HA mailing list
> > > Linux-HA at lists.linux-ha.org
> > > http://lists.linux-ha.org/mailman/listinfo/linux-ha
> > > See also: http://linux-ha.org/ReportingProblems
> > >
> > >
> > >
> > _______________________________________________
> > Linux-HA mailing list
> > Linux-HA at lists.linux-ha.org
> > http://lists.linux-ha.org/mailman/listinfo/linux-ha
> > See also: http://linux-ha.org/ReportingProblems
> >
>
>
>
> --
> ... Vinicius Menezes ...
> _______________________________________________
> Linux-HA mailing list
> Linux-HA at lists.linux-ha.org
> http://lists.linux-ha.org/mailman/listinfo/linux-ha
> See also: http://linux-ha.org/ReportingProblems
>

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