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<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed">Hello,<o:p></o:p></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><o:p> </o:p></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed">When using IPaddr2 RA in order to set a cloned IP address resource:<o:p></o:p></p>
<p class="MsoNormal" style="text-align:left;text-indent:36.0pt;direction:ltr;unicode-bidi:embed">
<o:p> </o:p></p>
<p class="MsoNormal" style="text-align:left;text-indent:36.0pt;direction:ltr;unicode-bidi:embed">
pcs resource create vip1 ocf:heartbeat:IPaddr2 ip=10.0.0.100 iflabel=vip1 cidr_netmask=24 flush_routes=true op monitor interval=30s<o:p></o:p></p>
<p class="MsoNormal" style="text-align:left;text-indent:36.0pt;direction:ltr;unicode-bidi:embed">
pcs resource clone vip1 clone-max=2 clone-node-max=2 globally-unique=true<o:p></o:p></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><o:p> </o:p></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed">Then the cluster set the iptables CLUSTERIP module, and the result is something like that:<o:p></o:p></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><o:p> </o:p></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"># iptables -L –n<o:p></o:p></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed">.<o:p></o:p></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed">.<o:p></o:p></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed">.<o:p></o:p></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed">CLUSTERIP all -- 0.0.0.0/0 10.0.0.100 CLUSTERIP hashmode=sourceip-sourceport clustermac=A1:DE:DE:89:A6:FE total_nodes=2 local_node=1 hash_init=0<o:p></o:p></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed">.<br>
.<o:p></o:p></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed">.<o:p></o:p></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><o:p> </o:p></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed">The problem is that the RA picks a clustermac address which is not on the multicast range (must start with 01:00:5E)<o:p></o:p></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed">If not working with a multicast address, the traffic is being treated as broadcast which is bad.<o:p></o:p></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><o:p> </o:p></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed">I found that you can set a multicast mac if you use the "mac" parameter, which solves the issue.<o:p></o:p></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><o:p> </o:p></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed">Can the RA default be changed to use multicast range?<o:p></o:p></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed">In addition, I think that you might need to update the documentation (<a href="https://clusterlabs.org/pacemaker/doc/en-US/Pacemaker/1.1/html/Clusters_from_Scratch/_clone_the_ip_address.html">https://clusterlabs.org/pacemaker/doc/en-US/Pacemaker/1.1/html/Clusters_from_Scratch/_clone_the_ip_address.html</a>)
and instruct users to use the mac parameter when creating the resource. In addition, I think that the documentation should instruct the user to enable multicast traffic on the network, which is not enabled by default.<o:p></o:p></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><o:p> </o:p></p>
<p class="MsoNormal" style="text-align:left;direction:ltr;unicode-bidi:embed"><b><span style="font-size:10.5pt;font-family:"Arial",sans-serif;color:#00B4EF">Tomer Azran</span></b><span style="color:#1F497D"><br>
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