Thanks Wei
That was the article I was following for troubleshooting - proved to be very
useful.
In our case even though the multicast config was present and correct on the
switches it has just stopped working after the power outage. Re-applying the
multicast switch config immediately restored functionality to the RVR's
Gary Dixon
Quadris Cloud Manager
+44 (0) 161 537 4980 +44 (0) 7989 717661
gary.di...@quadris.co.uk
www.quadris.com
Innovation House, 12-13 Bredbury Business Park
Bredbury Park Way, Bredbury, Stockport, SK6 2SN
-Original Message-
From: Wei ZHOU
Sent: Saturday, April 20, 2024 3:28 PM
To: users@cloudstack.apache.org
Subject: Re: RVR's in master/master state
Hi Gary,
Thanks for the sharing
I recall a similar issue caused by a multicast configuration (not the
same):
https://github.com/apache/cloudstack/issues/7838#issuecomment-1722697352
anyone facing the similar issue could check the multicast configurations.
Kind regards,
Wei
On Fri, Apr 19, 2024 at 6:20 PM Gary Dixon
wrote:
> Hi Daan
>
> Sorry - I forgot to post back what the issue turned out to be.
>
> We had a power outage in our building where our Dev environment is racked.
> After doing some tcp dumps on some vxlan interfaces I was seeing lots
> of bad checksums.
> Our Network engineer swore that the switches we're all OK but after
> re-applying the multicast config on the switches - all of the RVR's
> came back into a stable Master/Backup state across all VPC's.
> Hope this helps others if they are seeing strange behaviour with VPC
> RVR's when using VXLAN guest isolation
>
> BR
>
> Gary
>
>
>
> Gary Dixon
> Quadris Cloud Manager
> +44 (0) 161 537 4980 <+44%20(0)%20161%20537%204980>
> +44 (0) 7989 717661 <+44%20(0)%207989%20717661>
> gary.di...@quadris.co.uk
> http://www.q/
> uadris.com%2F&data=05%7C02%7CGary.Dixon%40quadris.co.uk%7Ce9fb36590460
> 4570a19608dc61461dbf%7Cf1d6abf3d3b44894ae16db0fb93a96a2%7C0%7C0%7C6384
> 92200978503803%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2l
> uMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=MOrw1j6mujkBduk
> TaLlsZ%2BhV0ql9qcziL%2FcPnNNIbmk%3D&reserved=0
> Innovation House, 12‑13 Bredbury Business Park Bredbury Park Way,
> Bredbury, Stockport, SK6 2SN -Original Message-
> From: Daan Hoogland
> Sent: Friday, April 19, 2024 3:08 PM
> To: users@cloudstack.apache.org
> Subject: Re: RVR's in master/master state
>
> sorry no one could help you Gary,
> Have you gotten any further on this issue?
>
> On Fri, Apr 5, 2024 at 4:59 PM Gary Dixon
> >
> wrote:
>
> > HI all
> >
> >
> >
> > ACS 4.15.2
> >
> > Ubuntu 20.04
> >
> > KVM
> >
> > Adv Zone no sec groups
> >
> >
> >
> > We recently had to move all of our dev ACS environment virtual
> > management and mysql servers to a new isolated subnet for security
> reasons.
> >
> >
> >
> > Since then all of the VPC RVR’s are in master/master mode.
> >
> > If I restart a VPC with cleanup the RVR’s come back into a
> > master/backup state for a few minutes but then go into master/master
> > state rendering the VPC useless.
> >
> >
> >
> > In the cloud.log on one of the RVR’s it is full of these errors:
> >
> > “2024-04-05 14:51:43,843 ERROR Not able to setup source-nat for a
> > regular router yet”
> >
> >
> >
> > Can anyone point me in the right direction to resolve this issue ?
> >
> > Are there other logs I could look at or services on the RVR’s to check ?
> >
> >
> >
> > BR
> >
> >
> >
> > Gary
> >
> >
> > Gary Dixon
> > Quadris Cloud Manager
> > +44 (0) 161 537 4980 <+44%20(0)%20161%20537%204980>
> > +44 (0) 7989 717661 <+44%20(0)%207989%20717661>
> > gary.di...@quadris.co.uk
> > http://www/
> > .q%2F&data=05%7C02%7CGary.Dixon%40quadris.co.uk%7Ce9fb365904604570a1
> > 9608dc61461dbf%7Cf1d6abf3d3b44894ae16db0fb93a96a2%7C0%7C0%7C63849220
> > 0978509895%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luM
> > zIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=yig9%2F5H%2F2T7
> > Q07%2BlcLOCgRfwH8NCvrmBZw0L5Z%2BYTz8%3D&reserved=0
> > uadris.com%2F&data=05%7C02%7CGary.Dixon%40quadris.co.uk%7C6d453f6408
> > 0c
> > 449f243d08dc607a6e5c%7Cf1d6abf3d3b44894ae16db0fb93a96a2%7C0%7C0%7C63
> > 84
> > 91326163464980%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV
> > 2l
> > uMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=tKsAdO2jZBj5q
> > eL
> > CsCSOX0zLNsvyrXSeY7PegUCOBhE%3D&reserved=0
> > Innovation House, 12‑13 Bredbury Business Park Bredbury Park Way,
> > Bredbury, Stockport, SK6 2SN
> >
>
>
> --
> Daan
>
