Am Mittwoch, 15. August 2007 10:52 schrieb Andrew Beekhof:
> On 8/15/07, Christian Rishøj <[EMAIL PROTECTED]> wrote:
> > On 8/14/07, Michael Schwartzkopff <[EMAIL PROTECTED]> wrote:
> > > is it possbile to monitor the CPU load constantly and to move resources
> > > to another node or declare on node dead if the load exceeds some level?
> > > Or if the HDD space is too low.
> > > How can this be done?
> > > Can I use the Sysinfo RA for this purposes?
> >
> > You could have a cronjob which would check the system load, translate
> > it to some score and update an attribute in the CIB accordingly. Then
> > use this score in some place constraint (in combination with a value
> > for resource_stickiness), letting resources move away from their
> > current node if the load score is above some threshold.
> >
> > For updating attributes in the CIB from a script, use this command:
> >
> > attrd_updater -n your_attribute -v some_value
>
> spot on
> the other suggestion of using monit would also work
Hi,
I would like to stick to sysinfo since this is in the frame of heartbeat. I
have a cloe resource of sysinfo so that on every node one resource is
running. The sib section for one node is:
<nvpair
id="status-c624d6ab-eef3-413e-902d-89f53655afc7-probe_complete"
name="probe_complete" value="true"/>
<nvpair id="status-c624d6ab-eef3-413e-902d-89f53655afc7-arch"
name="arch" value="i686"/>
<nvpair id="status-c624d6ab-eef3-413e-902d-89f53655afc7-os"
name="os" value="Linux-2.6.18-4-xen-686"/>
<nvpair id="status-c624d6ab-eef3-413e-902d-89f53655afc7-free_swap"
name="free_swap" value="150"/>
<nvpair id="status-c624d6ab-eef3-413e-902d-89f53655afc7-cpu_info"
name="cpu_info" value="Intel(R) Celeron(R) CPU 1.70GHz"/>
<nvpair id="status-c624d6ab-eef3-413e-902d-89f53655afc7-cpu_speed"
name="cpu_speed" value="4303.76"/>
<nvpair id="status-c624d6ab-eef3-413e-902d-89f53655afc7-cpu_cores"
name="cpu_cores" value="1"/>
<nvpair id="status-c624d6ab-eef3-413e-902d-89f53655afc7-cpu_load"
name="cpu_load" value="0"/>
<nvpair id="status-c624d6ab-eef3-413e-902d-89f53655afc7-ram_total"
name="ram_total" value="150"/>
<nvpair id="status-c624d6ab-eef3-413e-902d-89f53655afc7-ram_free"
name="ram_free" value="50"/>
<nvpair id="status-c624d6ab-eef3-413e-902d-89f53655afc7-root_free"
name="root_free" value="1.1"/>
Yes, id did configure with the gui ...
How can I do a placement constraint so that the webserver is running on the
node that has a cpu_load <= 2 (or root_free >=1 [GB])? Any hint what i should
put into the constraints section?
<constraints>
<rsc_location id="place_apache" rsc="sysinfo">
<rule id="prefered_place_apache" score="100">
<expression attribute="root_free"
id="dcb4c245-ed75-491b-b6d1-6ad46a0aea4e" operation="gte" value="1"/>
</rule>
</rsc_location>
</constraints>
does not seem to do the job. How to check an attribute for a specific host?
Thanks for further help.
--
Dr. Michael Schwartzkopff
MultiNET Services GmbH
Addresse: Bretonischer Ring 7; 85630 Grasbrunn; Germany
Tel: +49 - 89 - 45 69 11 0
Fax: +49 - 89 - 45 69 11 21
mob: +49 - 174 - 343 28 75
mail: [EMAIL PROTECTED]
web: www.multinet.de
Sitz der Gesellschaft: 85630 Grasbrunn
Registergericht: Amtsgericht München HRB 114375
Geschäftsführer: Günter Jurgeneit, Hubert Martens
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