On 26.04.2016 14:46, Martin Sivak wrote: > I think that 1000 hosts per engine is a bit over what we recommend > (and support). The fact that all of them are going to be remote might > not be ideal either. The engine assumes the network connection to all > hosts is almost flawless and the necessary routing and distance to > your hosts might not play nice with (for example) the fencing logic.
Hi, this seems a little surprising. At least RHEV states in the documentation you support up to 200 hosts per cluster alone. There are no documented maxima for clusters or datacenters though. @awels: to add another layer of indirection via a dedicated hosted-engine per outlet seems a little much. we are talking about 500 * 4GB RAM at least in this example, so 2 TB RAM just for management purposes, if you follow engine hardware recommendations? But I agree, ovirt does not handle unstable or remote connections that well, so you might be better of with hundredths of remote engines, but it seems to be a nightmare to manage, even if you automate everything. My personal experience is, that ovirt does scale at least until about 30-50 DCs managed by a single engine, but that setup was also on a LAN (but I would say it could scale well beyond these numbers, at least on a LAN). HTH Sven
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