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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
>
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> 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
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