[lvs-users] netmask for vip?

Aaron West aaron at loadbalancer.org
Wed Jun 21 15:01:05 BST 2017


Linbo,

Yes, I believe it will be exactly the same, sorry for referencing
Ldirectord it's just what I'm used to using.

Did a quick google to verify my thoughts and this page backs me up as well
as being a nice read in itself:
http://www.ducea.com/2008/06/16/lvs-persistence/

Aaron West

Loadbalancer.org
www.loadbalancer.org <https://www.loadbalancer.org/?gclid=ES2017>

<https://plus.google.com/+LoadbalancerOrg>
<https://twitter.com/loadbalancerorg>
<http://www.linkedin.com/company/3191352?trk=prof-exp-company-name>
<https://www.loadbalancer.org/?category=company&post-name=overview&?gclid=ES2017>
<https://www.loadbalancer.org/?gclid=ES2017>
+1 888 867 9504 / +44 (0)330 380 1064
aaron at loadbalancer.org

LEAVE A REVIEW
<http://collector.reviews.io/loadbalancer-org-inc-/new-review> | DEPLOYMENT
GUIDES
<https://www.loadbalancer.org/?category=resources&post-name=deployment-guides&?gclid=ES2017>
 | BLOG <https://www.loadbalancer.org/?category=blog&?gclid=ES2017>

On 21 June 2017 at 14:37, linbo liao <llbgurs at gmail.com> wrote:

> Sorry I miss the detailed information.
>
> I mean the netmask of VIP in LVS director. LVS use keepalived to do HA.
> Will vip netmask in LVS director affect the persistence ?
>
> 2017-06-18 16:30 GMT+08:00 Aaron West <aaron at loadbalancer.org>:
>
> > Hi Linbo,
> >
> > I assume you mean on the loopback adapter? If so then use a
> 255.255.255.255
> > or /32 for safety, not all OS's may need it as there can be many ways to
> > make it not respond to ARP, however, this also helps as you are telling
> the
> > OS it's a single address.
> >
> > Or do you mean the "netmask" in the ldirectord config which affects
> > persistence? When this is at the default of 255.255.255.255 persistence
> > will work per source address so 192.168.0.10 and 192.168.0.11 would get
> > stuck to different servers. If you set 255.255.255.0 then they would both
> > hit the same server as persistence would work by subnet so the whole
> > 192.168.0.0/24 subnet would be stuck to the first server.
> >
> > Hope that's relevant to your question and makes sense...
> >
> >
> > Aaron West
> >
> > Loadbalancer.org
> > www.loadbalancer.org <https://www.loadbalancer.org/?gclid=ES2017>
> >
> > <https://plus.google.com/+LoadbalancerOrg>
> > <https://twitter.com/loadbalancerorg>
> > <http://www.linkedin.com/company/3191352?trk=prof-exp-company-name>
> > <https://www.loadbalancer.org/?category=company&post-name=
> > overview&?gclid=ES2017>
> > <https://www.loadbalancer.org/?gclid=ES2017>
> > +1 888 867 9504 / +44 (0)330 380 1064
> > aaron at loadbalancer.org
> >
> > LEAVE A REVIEW
> > <http://collector.reviews.io/loadbalancer-org-inc-/new-review> |
> > DEPLOYMENT
> > GUIDES
> > <https://www.loadbalancer.org/?category=resources&post-name=
> > deployment-guides&?gclid=ES2017>
> >  | BLOG <https://www.loadbalancer.org/?category=blog&?gclid=ES2017>
> >
> > On 18 June 2017 at 01:16, linbo liao <llbgurs at gmail.com> wrote:
> >
> > > If vip 192.168.0.111 from subnet 192.168.0.0/24, and no netmask
> support
> > in
> > > configuration, the default netmask is 255.255.255.255. I test default
> > > netmask, looks everything works fine.
> > >
> > > So what's the proper netmask for vip, 255.255.255.255 or 255.255.255.0?
> > >
> > > Thanks,
> > > Linbo
> > > _______________________________________________
> > > Please read the documentation before posting - it's available at:
> > > http://www.linuxvirtualserver.org/
> > >
> > > LinuxVirtualServer.org mailing list - lvs-users at LinuxVirtualServer.org
> > > Send requests to lvs-users-request at LinuxVirtualServer.org
> > > or go to http://lists.graemef.net/mailman/listinfo/lvs-users
> > >
> > _______________________________________________
> > Please read the documentation before posting - it's available at:
> > http://www.linuxvirtualserver.org/
> >
> > LinuxVirtualServer.org mailing list - lvs-users at LinuxVirtualServer.org
> > Send requests to lvs-users-request at LinuxVirtualServer.org
> > or go to http://lists.graemef.net/mailman/listinfo/lvs-users
> >
> _______________________________________________
> Please read the documentation before posting - it's available at:
> http://www.linuxvirtualserver.org/
>
> LinuxVirtualServer.org mailing list - lvs-users at LinuxVirtualServer.org
> Send requests to lvs-users-request at LinuxVirtualServer.org
> or go to http://lists.graemef.net/mailman/listinfo/lvs-users
>


More information about the lvs-users mailing list