<div dir="ltr">Yes, that is a misleading warning. What is happening is that it's trying to load the interface driver as an alias first, which results in a stevedore warning that you see and then it falls back to loading it by the class path, which is what you have configured. We will need to see if there is a way we can suppress that warning somehow when we make the call to load by an alias and it fails.<div><br></div><div>If you switch your interface to just 'linuxbridge', that should get rid of the warning.</div><div><br><div><br></div><div>For both L3 HA nodes becoming master, we need a little more info to figure out the root cause. Can you try switching into the router namespace on one of the L3 HA nodes and see if you can ping the other router instance across the L3 HA network for that router?</div></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Dec 5, 2016 at 7:54 AM, Neil Jerram <span dir="ltr"><<a href="mailto:neil@tigera.io" target="_blank">neil@tigera.io</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div><div>I have also recently been seeing 'Could not load <whatever>InterfaceDriver' warnings from the DHCP agent, and haven't yet understood that - although I'm pretty sure that my interface driver is being loaded really - or else none of my networking function would work at all.<br><br></div>So it's possible that that part of your report is benign, and just a misleading warning. That said, I am still worried about it too, and would like to understand it properly.<br><br></div>I'm not aware of seeing the other symptoms you mentioned.<br><br></div> Neil<br><br></div><br><div class="gmail_quote"><div><div class="h5"><div dir="ltr">On Mon, Dec 5, 2016 at 3:14 PM Grant Morley <<a href="mailto:grant@absolutedevops.io" target="_blank">grant@absolutedevops.io</a>> wrote:<br></div></div></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div class="h5">
<div text="#000000" bgcolor="#FFFFFF" class="m_-4652561670223368530gmail_msg">
<p class="m_-4652561670223368530gmail_msg">Hi All,</p>
<p class="m_-4652561670223368530gmail_msg">We have just upgraded from Mitaka to Newton. We are running OSA
and we seem to have come across some weird networking issues since
the upgrade. Basically network access to instances is very
intermittent and seems to randomly stop working. <br class="m_-4652561670223368530gmail_msg">
</p>
<p class="m_-4652561670223368530gmail_msg">We are running neutron in HA and it appears that both of the
neutron nodes are now trying to be master and are both trying to
bring up the gateway IP addresses which would be causing
conflicts. <br class="m_-4652561670223368530gmail_msg">
</p>
<p class="m_-4652561670223368530gmail_msg">We are also seeing a lot of the following in the
"neutron-dhcp-agent" log files:</p>
<p class="m_-4652561670223368530gmail_msg">2016-12-05 14:42:24.837 2020 WARNING stevedore.named
[req-1955d0a1-1453-4c65-a93a-<wbr>54e8ea39b230
1ac995c0729142289f7237222f3358<wbr>06 3cc95dbe91c84e3e8ebbb9893ee54d<wbr>20
- - -] Could not load
neutron.agent.linux.interface.<wbr>BridgeInterfaceDriver<br class="m_-4652561670223368530gmail_msg">
2016-12-05 14:42:42.803 2020 INFO neutron.agent.dhcp.agent
[req-fad7d2bb-9d3c-4192-868a-<wbr>0164b382aecf
1ac995c0729142289f7237222f3358<wbr>06 3cc95dbe91c84e3e8ebbb9893ee54d<wbr>20
- - -] Trigger reload_allocations for port admin_state_up=True,
allowed_address_pairs=[], binding:host_id=, binding:profile=,
binding:vif_details=, binding:vif_type=unbound,
binding:vnic_type=normal, created_at=2016-12-05T14:42:<wbr>42Z,
description=, device_id=8752effa-2ff2-4ce1-<wbr>be70-e9f2243612cb,
device_owner=network:<wbr>floatingip, extra_dhcp_opts=[],
fixed_ips=[{u'subnet_id': u'4ca7db2d-544a-4a97-b5a4-<wbr>3cbf2467a4b7',
u'ip_address': u'XXX.XXX.XXX.XXX'}],
id=b3cf223d-8e76-484a-a649-<wbr>d8a7dd435124,
mac_address=fa:16:3e:ff:0d:50, name=,
network_id=af5db886-0178-4f8d-<wbr>9189-f55f773b37fa,
port_security_enabled=False, project_id=, revision_number=4,
security_groups=[], status=N/A, tenant_id=,
updated_at=2016-12-05T14:42:<wbr>42Z</p>
<p class="m_-4652561670223368530gmail_msg">I am a bit concerned about neutron not being able to load the
Bridge interface driver.</p>
<p class="m_-4652561670223368530gmail_msg">Has anyone else come across this at all or have any pointers?
This was working fine in Mitaka it just seems since the upgrade to
Newton, we have these issues.</p>
<p class="m_-4652561670223368530gmail_msg">I am able to provide more logs if they are needed.</p>
<p class="m_-4652561670223368530gmail_msg">Regards,<br class="m_-4652561670223368530gmail_msg">
</p>
<div class="m_-4652561670223368530m_-994859292978489524moz-signature m_-4652561670223368530gmail_msg">-- <br class="m_-4652561670223368530gmail_msg">
<div style="height:13px" class="m_-4652561670223368530gmail_msg"> </div>
<div class="m_-4652561670223368530gmail_msg"> <font face="Lucida Grande, Verdana, Arial, sans-serif" color="#A8D8FF" class="m_-4652561670223368530gmail_msg"> <span style="font-size:11px;line-height:15px;float:left;margin-right:10px" class="m_-4652561670223368530gmail_msg"> <img style="color:#a8d8ff;font-family:'Lucida Grande',Verdana,Arial,sans-serif;font-size:11px;line-height:15px;float:left;margin-top:0px;margin-right:10px" class="m_-4652561670223368530gmail_msg"> </span>
</font>
<div style="margin-left:80px;line-height:15px;color:rgb(109,190,255);margin-bottom:5px" class="m_-4652561670223368530gmail_msg"> <span style="font-family:Hind,'Lucida Grande',Verdana,Arial,sans-serif;font-size:18px;font-weight:200;color:rgb(35,157,255)" class="m_-4652561670223368530gmail_msg">Grant Morley</span> <span style="color:rgb(35,157,255);font-size:15px" class="m_-4652561670223368530gmail_msg"> </span> <font face="Hind, Lucida Grande, Verdana, Arial, sans-serif" class="m_-4652561670223368530gmail_msg"> <span style="font-size:15px" class="m_-4652561670223368530gmail_msg"> </span> </font> </div>
<div style="margin-left:80px;line-height:15px;color:rgb(109,190,255);margin-bottom:10px" class="m_-4652561670223368530gmail_msg"> <font face="Hind,
Lucida Grande, Verdana, Arial, sans-serif" class="m_-4652561670223368530gmail_msg"> <span style="font-size:15px" class="m_-4652561670223368530gmail_msg">Cloud Lead</span> </font> </div>
<div style="font-family:Hind,'Lucida Grande',Verdana,Arial,sans-serif;font-size:13px;margin-left:80px;line-height:15px;color:rgb(153,153,153)" class="m_-4652561670223368530gmail_msg"> <span style="color:#616161" class="m_-4652561670223368530gmail_msg">Absolute</span> <span style="color:#98a5b0" class="m_-4652561670223368530gmail_msg">DevOps
Ltd</span> <br class="m_-4652561670223368530gmail_msg">
Units H, J & K, Gateway 1000, Whittle Way, Stevenage,
Herts, SG1 2FP
</div>
<div style="font-family:Hind,helvetica,arial;font-size:13px;margin-left:80px" class="m_-4652561670223368530gmail_msg"> <a href="http://www.absolutedevops.io/" style="color:#239dff;font-family:Hind,'Lucida Grande',Verdana,Arial,sans-serif;line-height:15px;margin-right:6px;text-decoration:none" class="m_-4652561670223368530gmail_msg" target="_blank"></a><a class="m_-4652561670223368530m_-994859292978489524moz-txt-link-abbreviated m_-4652561670223368530gmail_msg" href="http://www.absolutedevops.io" target="_blank">www.absolutedevops.io</a> <a href="mailto:grant@absolutedevops.i" style="color:#239dff;font-family:Hind,'Lucida Grande',Verdana,Arial,sans-serif;line-height:15px;margin-right:6px;text-decoration:none" class="m_-4652561670223368530gmail_msg" target="_blank"></a><a class="m_-4652561670223368530m_-994859292978489524moz-txt-link-abbreviated m_-4652561670223368530gmail_msg" href="mailto:grant@absolutedevops.io" target="_blank">grant@absolutedevops.io</a> <a style="color:#239dff;font-family:Hind,'Lucida Grande',Verdana,Arial,sans-serif;line-height:15px;margin-right:6px" class="m_-4652561670223368530gmail_msg">0845 874 0580</a> </div>
</div>
</div>
</div></div></div>
______________________________<wbr>_________________<br class="m_-4652561670223368530gmail_msg">
OpenStack-operators mailing list<br class="m_-4652561670223368530gmail_msg">
<a href="mailto:OpenStack-operators@lists.openstack.org" class="m_-4652561670223368530gmail_msg" target="_blank">OpenStack-operators@lists.<wbr>openstack.org</a><br class="m_-4652561670223368530gmail_msg">
<a href="http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators" rel="noreferrer" class="m_-4652561670223368530gmail_msg" target="_blank">http://lists.openstack.org/<wbr>cgi-bin/mailman/listinfo/<wbr>openstack-operators</a><br class="m_-4652561670223368530gmail_msg">
</blockquote></div>
<br>______________________________<wbr>_________________<br>
OpenStack-operators mailing list<br>
<a href="mailto:OpenStack-operators@lists.openstack.org">OpenStack-operators@lists.<wbr>openstack.org</a><br>
<a href="http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators" rel="noreferrer" target="_blank">http://lists.openstack.org/<wbr>cgi-bin/mailman/listinfo/<wbr>openstack-operators</a><br>
<br></blockquote></div><br></div>