<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt">Hello guys,<br>maybe you can help me with following issue. I have created a little cloud with a host and two worker nodes. The setup went successfully until now, I am able to create VM's and move them via normal and live migration.<br>Another (possibly) important information is that I configured my virtual bridge on both worker nodes like this:<br><br><pre> auto br0
iface br0 inet static
address 192.168.0.[2|3]
netmask 255.255.255.0
network 192.168.0.0
broadcast 192.168.0.255
#gateway 192.168.0.1
bridge_ports eth0
bridge_stp on
bridge_maxwait 0</pre><br>The command "brctl show" gives me following things back:<br><br><pre>bridge name<span class="tab"> bridge id</span><span class="tab"> </span><span class="tab"> </span><span class="tab"> </span><span class="tab">STP enabled</span><span class="tab"> interfaces<br>br0</span><span class="tab"> </span><span class="tab"> </span><span class="tab"> 8000.003005c34278</span><span class="tab"> yes</span><span class="tab"> </span><span class="tab"> </span><span class="tab"> eth0<br></span><span class="tab"> </span><span class="tab"> </span><span class="tab"> </span><span class="tab"> </span><span class="tab"> </span><span
class="tab"> </span><span class="tab"> </span><span class="tab"> </span><span class="tab"> </span><span class="tab"> </span><span class="tab"> </span><span class="tab"> </span><span class="tab"> vnet0 (<- only appears on node with running VM)</span><br><br><span class="tab">virbr0</span><span class="tab"> </span><span class="tab"> </span><span class="tab"> 8000.000000000000</span><span class="tab"> yes</span><br><br><font style="font-family: arial,helvetica,sans-serif;" size="2">According to the</font><font style="font-family: arial,helvetica,sans-serif;" size="2"> libvirt wiki this setting is good as is.</font> <font size="2">However, the issue I'm having is that when I create a VM and assign a static IP to it, which looks like e.g. 192.168.0.5, <br>I
firstly am able to ping this VM from both</font> <font size="2">worker nodes, and also when I perform a live migration the ping stops for a few seconds (until the nodes realize the new route to this VM) and then starts pinging normally again.<br><br>However, when I perform a normal migration the ping doesn't recover anymore, but answers repeatedly with: Destination Host Unreachable<br><br>Do you know what could be the problem? Where is the difference between a normal and live migration and how can the ping after live migrating still work, but after a normal migration not?<br><br>Thanks a lot!<br>Regards, Adnan<br></font></pre>
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