[Linux-HA] Failover not happening.

[nasar sherieff]

Thank you Andrew. 

Failover happens now after configuring ipfail. But the
problem is with the drbd now. When I connect back the
master node, It's ending up in split brain. I have to
solve this manually.  Read about stonith, but I don't
have any stonith devices. Is there any other way to
avoid split brain. ie, when master comes online, it'll
get all the updates from slave1?.  Please help.

Thanks
Nasar




--- Andrew Beekhof <beekhof at gmail.com> wrote:

> On 10/4/07, nasar sherieff <shenasar at yahoo.com>
> wrote:
> > I have two node cluster as active/passive setup.
> >
> > two nodes are connected through Lan. There is a
> serial
> > connection between these two nodes.
> >
> > OS: Fedora core 7
> > s/w: heartbeat-2.0.8-1.fc7, drbd-8.0.6-3(RPMS)
> > Stonith not configured.
> 
> bad idea
> 
> > Cluster nodes: master and slave1
> >
> >
> > Problem:
> > When I disconnect network cable of master node,
> > failover is not happening.
> 
> because heartbeat can still see the other side via
> the serial cable
> 
> you need to read up on ipfail
> 
> > heartbeat still running
> > with the resources up. drbd show primary/unknown.
> > slave1 node shows secodary/unknown.
> >
> > Failover happening only when master node properly
> > shutting down or heartbeat service stopped.
> >
> >
> > Please let me know how to solve this failover
> issues
> > when network not available, but machine is up.
> >
> >
> > My configuration:
> >
> > /etc/ha.d/ha.cf
> > --------------------
> > logfile /var/log/ha-log
> > logfacility     local0
> > keepalive 1
> > deadtime 30
> > warntime 10
> > initdead 60
> > serial /dev/ttyS0
> > bcast eth0
> > ping 192.168.2.2
> > auto_failback yes
> > node master slave1
> > crm no
> >
> >
> >
> > /etc/ha.d/haresources
> > ----------------------
> > master drbddisk::drbd0
> > Filesystem::/dev/drbd0::/data::ext3 192.168.2.3
> smb
> >
> >
> >
> > /etc/drbd.conf
> > ---------------------
> > global {
> >         usage-count yes;
> > }
> >
> > resource drbd0 {
> >   protocol C;
> >   handlers {
> >     pri-on-incon-degr "echo o >
> /proc/sysrq-trigger ;
> > /sbin/shutdown -h";
> >     pri-lost-after-sb "echo o >
> /proc/sysrq-trigger ;
> > /sbin/shutdown -h";
> >     local-io-error "echo o > /proc/sysrq-trigger ;
> > /sbin/shutdown -h";
> >     outdate-peer
> > "/usr/lib/heartbeat/drbd-peer-outdater";
> >   }
> >   startup {
> >     degr-wfc-timeout 120;    # 2 minutes.
> >   }
> >   disk {
> >     on-io-error   detach;
> >   }
> >   net {
> >     timeout 120;
> >     connect-int 20;
> >     ping-int 20;
> >     max-buffers     2048;
> >     max-epoch-size  2048;
> >     ko-count 30;
> >     cram-hmac-alg "sha1";
> >     shared-secret "FooFunFactory";
> >   }
> >   syncer {
> >     rate 10M;
> >     al-extents 257;
> >   }
> >
> >   on master {
> >     device     /dev/drbd0;
> >     disk             /dev/sda2;
> >     address   192.168.2.9:7788;
> >     meta-disk  internal;
> >   }
> >   on slave1 {
> >     device    /dev/drbd0;
> >     disk      /dev/sda2;
> >     address   192.168.2.8:7788;
> >     meta-disk internal;
> >   }
> > }
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
>
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> >
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