dejanmm at fastmail
Sep 15, 2009, 3:43 AM
Post #4 of 4
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Re: attribute or variable to detect failed resource
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Hi,
On Tue, Sep 15, 2009 at 01:20:19AM -0500, MAHESH, SIDDACHETTY M (SIDDACHETTY M) wrote:
> Hi,
>
> I have a two node cluster. I have two resources - VIP
> (virtual IP) and APP (res1). The APP resource has to be
> co-located with VIP resource. Since VIP is the primary
> resource, I want to move the VIP+APP to the other node in the
> cluster when APP fails.
>
> Is there a clean way to do this? I was hoping that there
> would be a property/attribute that tells me that APP is
> down/failed state and VIP can have location constraints based
> on this attribute.
>
> Currently, if APP fails, it is down on the current node and
> does not migrate to the other node because of the VIP and APP
> co-location constraint.
I'm really not sure what you're talking about. If a resource
fails, then the cluster (CRM) should try to do something about
it, i.e. either restart it or try to start it on another node.
You can control that, i.e. restart/migrate decision using
resource-stickiness and migrate-threshold. Take a look at the
pacemaker documentation.
Thanks,
Dejan
> Regards,
> Mahesh
>
>
>
> -----Original Message-----
> From: linux-ha-bounces [at] lists [mailto:linux-ha-bounces [at] lists] On Behalf Of Dejan Muhamedagic
> Sent: Monday, September 14, 2009 4:43 PM
> To: General Linux-HA mailing list
> Subject: Re: [Linux-HA] attribute or variable to detect failed resource
>
> Hi,
>
> On Mon, Sep 14, 2009 at 04:31:26AM -0500, MAHESH, SIDDACHETTY M (SIDDACHETTY M) wrote:
> > Hi group,
> >
> >
> > I have lsb (/etc/init.d/* service scripts) resources in my two node cluster. Is there a variable or attribute like 'pingd' or '#uname' that I can use to check if the lsb resource has failed?
>
> No. Why would you want that? That's the basic cluster
> functionality, to deal with resources which failed.
>
> Thanks,
>
> Dejan
>
> > <rsc_location id="service_running" rsc="res1">
> > <rule id="service_running_rule" score="-INFINITY" Boolean_op="or">
> > <expression id="service_running_rule_expr_undefined" attribute="SVC_FAILED" operation="not_defined"/>
> > <expression id=" service_running_rule_expr_zero" attribute="SVC_FAILED" operation="gt" value="0"/>
> > </rule>
> > </rsc_location>
> >
> >
> > Regards,
> > Mahesh
> > _______________________________________________
> > Linux-HA mailing list
> > Linux-HA [at] lists
> > http://lists.linux-ha.org/mailman/listinfo/linux-ha
> > See also: http://linux-ha.org/ReportingProblems
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