Hi,
I am trying to set up a three-way redundant DRBD. The way I understand
it, this is only possible as a primary/secondary-pair with an "external"
stacked-on-top backup.
resource r0 {
disk {
resync-rate 40M;
}
net {
verify-alg sha1;
protocol C;
}
on ibis-vstest-01 {
device /dev/drbd0;
disk /dev/sdb1;
address 146.107.216.240:7789;
meta-disk internal;
}
on ibis-vstest-02 {
device /dev/drbd0;
disk /dev/sdb1;
address 146.107.216.241:7789;
meta-disk internal;
}
}
resource r0-U {
net {
protocol A;
}
stacked-on-top-of r0 {
device /dev/drbd10;
address 146.107.216.242:7789;
}
on ibis-vstest-03 {
device /dev/drbd10;
disk /dev/sdb1;
address 146.107.216.242:7789;
meta-disk internal;
}
}
The problem is that my third node is within the same IP range as the
other two. Therefore is no dedicated second IP interface with an
external IP. I then get an error message about a doubly assigned IP address.
Is the a way to create a such setup within the same cluster? I read up a
bit on the Pacemaker section which proposes a three-way and four-way
method, though, also intended to be "external". Do I need the commercial
DRBD-Proxy for the Pacemaker-setup or is this optional?
Cheers,
Sven
--
Sven Duscha, M.Sc.
Systemadministrator
Institute of Bioinformatics and Systems Biology
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