[Linux-cluster] Higher Grained Definition of IP AddressAssignments?

[Dustin Henry Offutt]

Martin,

A thousand most sincere gratitudes.

This is *exactly* what we need (I'm presuming this attribute looks for an
interface labeled "eth0" (from your example) and applies that 192 address to
it....?). Testing immediately!!!

If you have a moment, from whence did you find this attribute?



On Mon, Jun 14, 2010 at 8:18 AM, Martin Waite <Martin.Waite at datacash.com>wrote:

>  Hi,
>
>
>
> /usr/share/cluster/ip.sh appears to perform the link-monitoring in the
> "status" command, which is called periodically.  I don't know that either
> rgmanager or cman or other cluster software are directly involved in that.
>
>
>
> The "ip" configuration already supports an "interface" attribute:
>
>
>
>       <ip address="192.168.2.120" interface="eth0" monitor_link="1"/>
>
>
>
>
>
> regards,
>
> Martin
>
>
>
> *From:* linux-cluster-bounces at redhat.com [mailto:
> linux-cluster-bounces at redhat.com] *On Behalf Of *Dustin Henry Offutt
> *Sent:* 14 June 2010 13:15
> *To:* linux-cluster at redhat.com >> linux clustering
> *Subject:* Re: [Linux-cluster] Higher Grained Definition of IP
> AddressAssignments?
>
>
>
> Appreciate the info, but indeed what we need is HA.
>
> I need to perhaps request if a cluster developer would be willing to add a
> new configuration item to the IP xtag within the cluster.conf configuration
> that would allow one to specify IP an IP label to apply the IP resource to.
>
> This *could* be done via a cluster resource script - but then we'd lose
> the ability to have the cluster software monitor the link and relocate the
> service should the link be lost.
>
> Kit Gerrits wrote:
>
> Hello,
>
>
>
> What you want sounds more like Load Balancing than HA Clustering.
>
>
>
> I would suggest building a lvs load balancing cluster with 10.1.1.x as
> front-end IP and 10.1.2 as backend IP.
>
> Make the LVS the default gateway for your 'cluster servers'
> (realservers), then configure 1-.1.1.50 on your LVS cluster as Virtual IP
> with the 10.1.2.x realservers as backend using NAT routing.
>
>
>
> Documentation isa vailable at:
>
> http://www.austintek.com/LVS/LVS-HOWTO/
>
> or, more specifically:
>
> http://www.austintek.com/LVS/LVS-HOWTO/HOWTO/LVS-HOWTO.LVS-NAT.html
>
>
>
> LVS should be included in Red Hat Advanced Platform.
>
>
>
> Yes, running a LoadBalancing cluster means 2 more servers and 2 more
> subscriptions, but it will allow for highly-available Load Balancing.
>
> (implicitly allowing you to take realservers offline for maintenance)
>
>
>
>
>
> Regards,
>
>
>
> Kit Gerrits
>
>
>
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