Good day ceph users,
I'm new to ceph but installation went well so far. Now I have a lot of questions regarding radosgw. Hope you don't mind...
1. To build a high performance yet cheap radosgw storage, which pools should be placed on ssd and which on hdd backed pools? Upon installation of radosgw, it created the following pools: .rgw, .rgw.buckets, .rgw.buckets.index, .rgw.control, .rgw.gc, .rgw.root, .usage, .users, .users.email.
2. In order to have very high availability I like to setup two different ceph clusters, each in its own datacenter. How to configure radowsgw to make use of this layout? Can I have a multi-master setup with having a load balancer (or using geo-dns) which distributes the load to radosgw instances in both datacenters?
3. Is it possible to start with a simple setup now (only one ceph cluster) and later add the multi-datacenter redundancy described above without downtime? Do I have to respect any special pool-naming requirements?
4. Which number of replaction would you suggest? In other words, which replication is need to achive 99.99999% durability like dreamobjects states?
5. Is it possible to map fqdn custom domain to buckets, not only subdomains?
6. The command "radosgw-admin pool list" returns "could not list placement set: (2) No such file or directory". But radosgw seems to work as expected anyway?
Looking forward to your suggestions.
Alessandro Brega
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