Hello. First, sorry…poor english… so it’s a google translation. I hope you could understand my problem.
Following the installation (with kolla ansiible) of an openstack (wallaby) on a physical server (under centos8), we were able to see all the possibilities offered in our teaching by Openstack. (i’m working in a french university).
For various reasons, we need to extend this manipulation. We will have 3 nodes (dell R740) and a Dell bay for storage.(dell compellent)
After having mounted a first test with 3 servers (T340), and put the storage (LVM) on node 3 (without the bay therefore) to test whether we had understood certain things correctly (in particular the parameter of the « multinode" file and that of « globals.xml"), we want to test with the Compellent bay.
My question is as follows: knowing that the 3 nodes are three identical servers, in the multinode file, how to configure [storage]… should one of the 3 servers be put, add the iscsid docker… or else put the IP of the bay . I admit that this aspect is problematic for me. what about « enable_iscsii » and « enable_backends_lvm » parameters ?
In a configuration like mine, would you put a "controller" or 2 or 3? Should we instead put an LVM on one of the servers and with iscsi make this LVM point the bay?
Maybe these are silly questions, I'm not sure. This use of the bay is new and I don't know how best to do it. Between cinder, lvm, iscsi, the bay, the multinode file and the options of globals.xml, it is still not easy at first
Franck VEDEL