[ClusterLabs] Antw: [EXT] Colocation per site ?

[Andrei Borzenkov]

On Fri, Feb 19, 2021 at 10:41 AM Strahil Nikolov <hunter86_bg at yahoo.com> wrote:
>
> DC1:
> - nodeA
> - nodeB
> - nodeC
>
> DC2:
> - nodeD
> - nodeE
> - nodeF
>
> DC3:
> - majority maker
>
> I will have 3 VIPs:
> VIP1
> VIP2
> VIP3
>
> I will have to setup the cluster to:
> 1. Find where is the master HANA resource
> 2. Place VIP1 on nodeA/nodeD
> 3. Place VIP2 on nodeB/nodeE
> 4. Place VIP3 on nodeC/nodeF
>

Do you have a fixed relation between node pairs and VIPs? I.e. must
A/D always get VIP1, B/E - VIP2 etc?

> End Goal:
> Master on nodeA
> VIP1 on nodeA
> VIP2 on nodeB
> VIP3 on nodeC
>
> Master on nodeD
> VIP1 on nodeD
> VIP2 on nodeE
> VIP3 on nodeF
>
> Master down:
> All VIPs down
>
> I think that Ken has mentioned a possible solution, bit I have to check it out.
>
> Best Regards,
> Strahil Nikolov
>
> On Thu, Feb 18, 2021 at 9:40, Ulrich Windl
> <Ulrich.Windl at rz.uni-regensburg.de> wrote:
> >>> Strahil Nikolov <hunter86_bg at yahoo.com> schrieb am 17.02.2021 um 17:46 in
> Nachricht <2134183555.2122291.1613580414956 at mail.yahoo.com>:
> > Hello All,
> > I'm currently in a process of building SAP HANA Scale-out cluster and the
> > HANA team has asked that all nodes on the active instance should have one IP
> > for backup purposes.
> > Yet, I'm not sure how to setup the constraints (if it is possible at all) so
> > all IPs will follow the master resource and yet run on a separate host.
>
> I think you should explain the scenario a bit better to undertsand what you want.
>
>
> > I know that I can set location constraints between each pair of nodes , but
> > the logic identifying the master's DC is eluding me.
> > Best Regards,Strahil Nikolov
>
>
>
>
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