Hey Burkhard, Chris, all,
On 16/08/2021 10:48, Chris Palmer wrote:
It's straightforward to add multiple DNS names to an endpoint. We do
this for the sort of reasons you suggest. You then don't need separate
rgw instances (not for this reason anyway).
Assuming default:
* radosgw-admin zonegroup get > zg-default
* Edit zg-default, changing "hostnames" to e.g. ["host1",
"host1.domain", "host2", "host2.domain"]
* radosgw-admin zonegroup set --infile zg-default
* Restart all rgw instances
Please excuse my confusion, but how does this relate to the endpoints of
zonegroup and zones then.
What does setting endpoints (or hostnames even) on those actually do?
If I may split my confusion up into some questions ....
1) From what I understand is that a zone has endpoints to identify how
it can be reached by other RGWs to enable communication for multisite sync.
So having
* s3-az1.example.com (zone "az1")
* s3-az2.example.com (zone "az2")
as endpoints in each zone of my two zones allows the two zones to talk
to each other.
But does this have to match the "rgw dns name" setting on the RGWs in
each zone then?
Or could I potentially just add all the individual hosts (if they were
reachable) of my RGW farm to avoid hitting the loadbalancer in front?
2) How do the endpoints of the whole zone-group relate then? Do I simply
add all endpoints of all zones?
What are those used for then?
3) How would one go about having a global DNS name used to always point
to the master zone
Would I just add another "global" or "generic" hostname, let's say
s3.example.com to the zonegroup as an endpoint and have the DNS point to
the LB of the current master zone? The intention would be to avoid
involving the clients having to update their endpoint in case of a failover.
Thanks and with kind regards
Christian
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