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From Nux! <...@li.nux.ro>
Subject Re: Regular total loss of connectivity
Date Mon, 01 Jun 2015 21:19:11 GMT
Arp remains unchanged when it happens, I only have one host.
I'll try the ping thing next.

Thanks
Lucian

--
Sent from the Delta quadrant using Borg technology!

Nux!
www.nux.ro

----- Original Message -----
> From: "Simon Weller" <sweller@ena.com>
> To: users@cloudstack.apache.org, dev@cloudstack.apache.org
> Sent: Monday, 1 June, 2015 18:23:13
> Subject: Re: Regular total loss of connectivity

> What does arp show you on the VR when this occurs?
> Can you isolate this VR to a different physical host and upstream switch?
> If you leave a ping going to some external ip (e.g. 8.8.8.8) from the VR, do you
> still lose connectivity?
> 
> ________________________________________
> From: Nux! <nux@li.nux.ro>
> Sent: Monday, June 1, 2015 12:15 PM
> To: users@cloudstack.apache.org
> Cc: dev@cloudstack.apache.org
> Subject: Re: Regular total loss of connectivity
> 
> Ok, no luck with e1000 either, connectivity is lost after 4 hours (14400 sec).
> That can't be random.
> 
> Any ideas?
> 
> --
> Sent from the Delta quadrant using Borg technology!
> 
> Nux!
> www.nux.ro
> 
> ----- Original Message -----
>> From: "Nux!" <nux@li.nux.ro>
>> To: users@cloudstack.apache.org
>> Cc: dev@cloudstack.apache.org
>> Sent: Monday, 1 June, 2015 14:35:09
>> Subject: Re: Regular total loss of connectivity
> 
>> Nope, it's a regular, non-redundant VR.
>>
>> I've switched to using e1000 instead of virtio, waiting for a few hours, so how
>> it pans out. :-)
>>
>> --
>> Sent from the Delta quadrant using Borg technology!
>>
>> Nux!
>> www.nux.ro
>>
>> ----- Original Message -----
>>> From: "Simon Weller" <sweller@ena.com>
>>> To: dev@cloudstack.apache.org
>>> Cc: "Cloudstack Users List" <users@cloudstack.apache.org>
>>> Sent: Monday, 1 June, 2015 13:32:26
>>> Subject: Re: Regular total loss of connectivity
>>
>>> Is this VR in a redundant pair? If so, does stopping the master and allowing
the
>>> slave to take over allow the flow of traffic to resume?
>>>
>>>
>>> ________________________________________
>>> From: Nux! <nux@li.nux.ro>
>>> Sent: Monday, June 1, 2015 6:45 AM
>>> To: dev@cloudstack.apache.org
>>> Cc: Cloudstack Users List
>>> Subject: Re: Regular total loss of connectivity
>>>
>>> Thanks Simon,
>>>
>>> link up/down has not helped, setting tso etc off on the link has not helped
>>> either.
>>> Connectivity is lost as usual after ~4 hours.
>>>
>>> I found some suggestions to try and use the e1000 nic instead of virtio, will
do
>>> that.
>>>
>>> Lucian
>>>
>>> --
>>> Sent from the Delta quadrant using Borg technology!
>>>
>>> Nux!
>>> www.nux.ro
>>>
>>> ----- Original Message -----
>>>> From: "Simon Weller" <sweller@ena.com>
>>>> To: "dev" <dev@cloudstack.apache.org>, "Cloudstack Users List"
>>>> <users@cloudstack.apache.org>
>>>> Sent: Sunday, 31 May, 2015 22:36:56
>>>> Subject: Re: Regular total loss of connectivity
>>>
>>>> If you ifdown the interface on the router and then ifup it again, does the
arp
>>>> problem resolve itself?
>>>>
>>>> We've seen a similar issue before caused by malicious/heavy traffic related
to
>>>> this bug:
>>>>
>>>> https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/997978
>>>>
>>>> - Si
>>>> ________________________________________
>>>> From: Nux! <nux@li.nux.ro>
>>>> Sent: Sunday, May 31, 2015 4:25 PM
>>>> To: dev; Cloudstack Users List
>>>> Subject: Regular total loss of connectivity
>>>>
>>>> Hi,
>>>>
>>>> Following a power cut, one of my cloudstack deployments is having a really
weird
>>>> problem that I cannot seem to solve on my own.
>>>> Every 3 hours all the public IPs on the VR stop responding from the Internet.
>>>> From the VR they are of course all reachable.
>>>> In the same VLAN as the public IPs there is another physical server, this
one
>>>> can also access the VMs on their IPs just fine.
>>>>
>>>> The provider has not found the problem and hints at problems with the cloud
>>>> platform, however cloudstack worked just fine until the power cut, not to
>>>> mention the problem persists through HV and ACS upgrades.
>>>>
>>>> I'm thinking network side arp issues or something like this, alas I am not
that
>>>> good with network stuff and don't have access to it anyway.
>>>>
>>>> If I reboot the VR once or twice the IPs start working again and the VMs
are
>>>> accessible from the internet.
>>>>
>>>> Ideas?
>>>>
>>>> Env: CentOS 6, KVM, ACS 44 to 4.5.1, Adv zone
>>>>
>>>> Lucian
>>>>
>>>> --
>>>> Sent from the Delta quadrant using Borg technology!
>>>>
>>>> Nux!
> > > > www.nux.ro

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