Hi,

I am not having any monitors, should I use mon for this?


Greetings,

Lars

2009/11/27 Dejan Muhamedagic <[email protected]>

> Hi,
>
> On Thu, Nov 26, 2009 at 02:37:10PM +0100, Lars Johansen wrote:
> > Hi,
> >
> > I have a 2 cluster setup running heartbeat 2.1.3.
> >
> > Im running a active/passive setup, where I have mysql in master<-> master
> > replication, stored on each nodes filesystem, and I have a DRBD drive
> with
> > NFS.
> >
> > Pulling cables, shuttding down server etc. works very well.. the "alive"
> > server takes over..
> >
> > However Ive tried to simulate a "server freeze" by create a forkbomb on
> the
> > active server,  after doing that, I cannot log in with ssh, access nfs or
> > mysql, ping works, and I guess since the kernel responds, heartbeat wont
> > switch over.
>
> It's not the kernel, but the heartbeat process which sends
> messages. The only difference to other processes is that it runs
> at the highest priority, so it may be possible to have
> heartbeats, but no services...
>
> > How can I setup heartbeat so it detects if a server is frozen?
>
> ... What about resource monitoring? If the node is overwhelmed,
> as you say it is, then some monitors should timeout or fail, right?
>
> Thanks,
>
> Dejan
>
>
> >
> > Greetings,
> >
> > LArs
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