LVS
lvs-users
Google
 
Web LinuxVirtualServer.org

Re: [lvs-users] netmask for vip?

To: "LinuxVirtualServer.org users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: [lvs-users] netmask for vip?
From: Aaron West <aaron@xxxxxxxxxxxxxxxx>
Date: Wed, 21 Jun 2017 15:31:01 +0100
Linbo,

Sorry, if you mean directly on the interface of the director so when you
check the output of "ip a" then I'd use the netmask of the network, I
thought you meant the netmask setting for LVS itself.



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@xxxxxxxxxxxxxxxx

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 15:20, linbo liao <llbgurs@xxxxxxxxx> wrote:

> I am not sure.
>
> If I configure vip netmask, and use  `ip a`  it will print vip with netmask
> information.  But  `-M netmask` is show in `ipvsadm -Ln`.
>
> I think there are different thing.
>
> Thanks,
> Linbo
>
>
> 2017-06-21 22:01 GMT+08:00 Aaron West <aaron@xxxxxxxxxxxxxxxx>:
>
> > 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@xxxxxxxxxxxxxxxx
> >
> > 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@xxxxxxxxx> 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@xxxxxxxxxxxxxxxx>:
> > >
> > > > 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@xxxxxxxxxxxxxxxx
> > > >
> > > > 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@xxxxxxxxx> 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@LinuxVirtualServer.
> > org
> > > > > Send requests to lvs-users-request@xxxxxxxxxxxxxxxxxxxxxx
> > > > > 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@LinuxVirtualServer.
> org
> > > > Send requests to lvs-users-request@xxxxxxxxxxxxxxxxxxxxxx
> > > > 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@xxxxxxxxxxxxxxxxxxxxxx
> > > Send requests to lvs-users-request@xxxxxxxxxxxxxxxxxxxxxx
> > > 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@xxxxxxxxxxxxxxxxxxxxxx
> > Send requests to lvs-users-request@xxxxxxxxxxxxxxxxxxxxxx
> > 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@xxxxxxxxxxxxxxxxxxxxxx
> Send requests to lvs-users-request@xxxxxxxxxxxxxxxxxxxxxx
> 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@xxxxxxxxxxxxxxxxxxxxxx
Send requests to lvs-users-request@xxxxxxxxxxxxxxxxxxxxxx
or go to http://lists.graemef.net/mailman/listinfo/lvs-users

<Prev in Thread] Current Thread [Next in Thread>