[ovirt-users] multiple NICs VLAN ID conflict
Bill James
bill.james at j2.com
Thu Mar 17 00:14:01 UTC 2016
I tried based on this url: (based on
https://github.com/oVirt/vdsm/blob/master/vdsm_hooks/extra_ipv4_addrs/extra_ipv4_addrs.py_)
It seems to work ok, but the ovirt gui says the network is out of sync.
So I can't add any more networks to that interface. :-(
If I try detaching the "custom" network I get an error:
So obviously I'm missing something.
2016-03-16 17:09:17,948 WARN
[org.ovirt.engine.core.vdsbroker.vdsbroker.HostSetupNetworksVDSCommand]
(default task-49) [77dc0af6] Unexpected return value: StatusForXmlRpc
[code=-32603, message=Internal JSON-RPC error.]
2016-03-16 17:09:17,948 ERROR
[org.ovirt.engine.core.vdsbroker.vdsbroker.HostSetupNetworksVDSCommand]
(default task-49) [77dc0af6] Failed in 'HostSetupNetworksVDS' method
2016-03-16 17:09:17,962 ERROR
[org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector]
(default task-49) [77dc0af6] Correlation ID: null, Call Stack: null,
Custom Event ID: -1, Message: VDSM ovirt2.test.j2noc.com command failed:
Internal JSON-RPC error.
2016-03-16 17:09:17,962 ERROR
[org.ovirt.engine.core.vdsbroker.vdsbroker.HostSetupNetworksVDSCommand]
(default task-49) [77dc0af6] Error: VDSGenericException:
VDSErrorException: Failed to HostSetupNetworksVDS, error = Internal
JSON-RPC error., code = -32603
2016-03-16 17:09:17,962 ERROR
[org.ovirt.engine.core.vdsbroker.vdsbroker.HostSetupNetworksVDSCommand]
(default task-49) [77dc0af6] Exception:
org.ovirt.engine.core.vdsbroker.vdsbroker.VDSErrorException:
VDSGenericException: VDSErrorException: Failed to HostSetupNetworksVDS,
error = Internal JSON-RPC error., code = -32603
at
org.ovirt.engine.core.vdsbroker.vdsbroker.VdsBrokerCommand.createDefaultConcreteException(VdsBrokerCommand.java:75)
[vdsbroker.jar:]
at
org.ovirt.engine.core.vdsbroker.vdsbroker.BrokerCommandBase.createException(BrokerCommandBase.java:211)
[vdsbroker.jar:]
...
2016-03-16 17:09:17,973 ERROR
[org.ovirt.engine.core.vdsbroker.vdsbroker.HostSetupNetworksVDSCommand]
(default task-49) [77dc0af6] Command
'HostSetupNetworksVDSCommand(HostName = ovirt2.test.j2noc.com,
HostSetupNetworksVdsCommandParameters:{runAsync='true',
hostId='7cd16015-609f-47ce-9ea2-d9c1e83769e0',
vds='Host[ovirt2.test.j2noc.com,7cd16015-609f-47ce-9ea2-d9c1e83769e0]',
rollbackOnFailure='true', conectivityTimeout='120',
hostNetworkQosSupported='true', networks='[]',
removedNetworks='[V10_dev]', bonds='[]', removedBonds='[]'})' execution
failed: VDSGenericException: VDSErrorException: Failed to
HostSetupNetworksVDS, error = Internal JSON-RPC error., code = -32603
2016-03-16 17:09:17,973 ERROR
[org.ovirt.engine.core.bll.network.host.HostSetupNetworksCommand]
(default task-49) [77dc0af6] Command
'org.ovirt.engine.core.bll.network.host.HostSetupNetworksCommand'
failed: EngineException:
org.ovirt.engine.core.vdsbroker.vdsbroker.VDSErrorException:
VDSGenericException: VDSErrorException: Failed to HostSetupNetworksVDS,
error = Internal JSON-RPC error., code = -32603 (Failed with error
unexpected and code 16)
My hook script, please excuse the poor scripting since this is my first
python script.
#!/usr/bin/env python
"""
Tweak an interface defintion so that it uses an alternate port group.
It applies on a per vnic basis, it gets triggered and used by event:
* before_network_setup
This hook can be used to allow multiple NICs with same VLAN ID
in case they are used on multiple hardware NICs.
From:
http://lists.ovirt.org/pipermail/users/2014-November/029227.html
"""
import os
import hooking
import sys
import traceback
import xml.dom
HOOK_NAME = 'extnet_pg'
target = open("/tmp/fake_vlan.out",'w')
def main():
setup_nets_config = hooking.read_json()
for network, attrs in setup_nets_config['request']['networks'].items():
target.write("bbb for in fake: %s, %s\n" % (network,attrs))
if 'vlan' in attrs:
target.write("bbb custom in fake\n")
#_process_network(network, attrs)
vlanid = int(attrs['vlan'])
target.write("bbb fake vlanid= %s\n" % vlanid)
if vlanid > 900:
newid = vlanid - 900
attrs['vlan'] = newid
target.write("bbb fake newid= %s\n" % newid)
hooking.write_json(setup_nets_config)
def _process_network(network, attrs):
""" Changes vlan id if > 900 """
vlanid = int(attrs['vlan'])
#vlanid = int(filter(str.isdigit, port_group))
target.write("bbb fake vlanid= %s\n" % vlanid)
if vlanid > 900:
newid = vlanid - 900
attrs['vlan'] = newid
target.write("bbb fake newid= %s\n" % newid)
hooking.write_json(setup_nets_config)
def test():
print "do some test here"
if __name__ == '__main__':
try:
if '--test' in sys.argv:
test()
else:
main()
except:
hooking.exit_hook('extnet hook: [unexpected error]: %s\n' %
traceback.format_exc())
On 03/16/2016 01:17 AM, Edward Haas wrote:
> On Tue, Mar 15, 2016 at 8:19 PM, Bill James <bill.james at j2.com> wrote:
>> thank you very much for the reply.
>> I'm trying to find more about how to setup a 'fake vlan id', but so far have
>> not been able to find anything. The link you mentioned mentioned a link
>> about setup_network_hooks, but the link doesn't work any more.
>>
>> I have found there is a directory called
>> /usr/libexec/vdsm/hooks/before_network_setup.
>>
>> This doc http://www.ovirt.org/develop/developer-guide/vdsm/hook/network-nat/
>> suggests using "sudo engine-config -s CustomDeviceProperties"
>> but I haven't found any descriptions on how to use it.
>> This doc goes into a little detail:
>>
>> http://200.1.19.60/ovirt-engine/docs/manual/en_US/html/Administration_Guide/VDSM_hooks_defining_custom_properties.html
> It's not a must to use the custom properties in your case, although it
> will be more flexible.
> The idea is to use a 'fake' vlan, say 999, and build a hook on the
> host to intercept the request, detect that the vlan id is 999 and
> replace it with the correct vlan id.
> Using the custom properties just allows you to define the target vlan
> id on the Engine and not in the hook code.
>
> You can review this reference for the vdsm part:
> http://www.ovirt.org/develop/developer-guide/vdsm/hooks/
>
>>
>> but what property define vlan number and how do I tell it that this number
>> is really that number?
> If you look at this hook as an example:
> https://github.com/oVirt/vdsm/tree/master/vdsm_hooks/extra_ipv4_addrs
> You need to look for the 'vlan' attribute, check it is 999 and
> overwrite it with your ID.
>
>>
>> Thanks.
>>
>>
>> On 03/15/2016 04:57 AM, Alona Kaplan wrote:
>>
>> Hi Bill,
>>
>> Currently the engine blocks adding two networks with the same vlan id to a
>> data center.
>> If you think there is a use case for having more than one network with the
>> same vlan id in a DC, please open an RFE.
>>
>> As a workaround, you can add a network with a 'fake vlan id' (a vlan id that
>> is not in use by the dc).
>> And using 'vdsm before network setup hook'
>> (https://bugzilla.redhat.com/1057637) translating the 'fake vlan id' to the
>> desired one.
>>
>> Alona.
>>
>> ----- Original Message -----
>>
>> From: "Bill James" <bill.james at j2.com>
>> To: "users" <users at ovirt.org>
>> Sent: Tuesday, March 15, 2016 1:34:23 AM
>> Subject: [ovirt-users] multiple NICs VLAN ID conflict
>>
>> We have DEV and QA is the same "data center" but on the network side of
>> things they are on different switches, so they reused some VLAN IDs.
>> No problem, my server has 4 NICS.
>> But how do I tell ovirt its ok to have 2 networks with same vlan ID because
>> I'm going to put them on different NICs?
>>
>> It says "specified VLAN ID is already in use".
>>
>>
>> _______________________________________________
>> Users mailing list
>> Users at ovirt.org
>> http://lists.ovirt.org/mailman/listinfo/users
>>
>>
>>
>> _______________________________________________
>> Users mailing list
>> Users at ovirt.org
>> http://lists.ovirt.org/mailman/listinfo/users
>>
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