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<p>Hi,</p>
<p>We use drbd version 9.0.21-1 on CentOS 8 machine (kernel version
4.18.0-147.5.1.el8_1.x86_64) in two nodes. The direct link between
the two nodes is ensured by a fiber connection. <br>
</p>
<p>Some times, the direct link is down and the cluster switch drbd
disks from one node to the other and get at the end StandAlone
state (split brain).</p>
<p>DRBD disk synchronization is ensured <b>only</b> by the direct
link based on the configuration below :</p>
<font color="#000099"><font color="#000000"><i>resource test {</i><i><br>
</i><i> device minor 1;</i><i><br>
</i><i> net {</i><i><br>
</i><i> shared-secret xxxxxxxxxxxxxxxx;</i><i><br>
</i><i> }</i><i><br>
</i><i> on node1 {</i><i><br>
</i><i> address 192.168.1.1:7771;</i><i><br>
</i><i> disk /dev/vg0-node1/test;</i><i><br>
</i><i> flexible-meta-disk
/dev/vg0-node1/test-md;</i><i><br>
</i><i> }</i><i><br>
</i><i> on node2 {</i><i><br>
</i><i> address 192.168.1.2:7771;</i><i><br>
</i><i> disk /dev/vg0-node2/test;</i><i><br>
</i><i> flexible-meta-disk
/dev/vg0-node2/test-md;</i><i><br>
</i><i> }</i><i><br>
</i><i> }</i><br>
<br>
Does DRBD support synchronization over more than one network in
order to keep synchronization even the direct link (network
192.168.1.0/30 in our case) is down ? How can we define two
addresses in each node ?<br>
<br>
walim<br>
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