On Fri, Jun 1, 2018 at 5:44 PM, Vasu Kulkarni <vakulkar@xxxxxxxxxx> wrote: > Hi Folks, > > In the qa suites, We have been relying on Ceph task for long time and > quite frankly it has done excellent job of setting up cluster for > various upper layer tests which don't care how the cluster > is setup. > > I am now proposing where possible we start taking out Ceph Task and > replace this with Ceph-Ansible Task and fix the roles to properly work > with ceph-ansible task, this will help > us test more like customer scenario's, make it easy to consume new > features(eg: ceph-volume, vdo etc) there are few things to fix in > role's for each cluster that is setup using ceph-ansible > > a) multiple mon's or multiple mds cannot exist in same node and should > be put on different node), also look into how active/standy mds are setup > using ceph-ansible and use them appropriately in config. I'm late to the thread, but wanted to mention that I seem to recall the "one MDS per server" limitation coming up in some discussions about the mgr orchestrator interface too -- iirc it was not thought a big deal to enhance ceph-ansible to be able to do multiple MDS daemons on one server, rather than sticking to the limitation. Cheers, John > b) Daemon helper was another thing that was holding use of > Ceph-Ansible task, but I have tested a fix in my personal branch and > it seems to be working as long as we fix the roles > > c) for Dual Cluster setup we can continue to use old style Ceph Task, > we recommend not to use different cluster names in ceph-deploy or > ceph-ansible due to systemd issues. > > d) upgrades can also use the ceph-ansible task with cluster role fix. > ( the inital cluster is setup using ceph-ansible but then later on we > can still rely on old style apt-get update/yum update to > update individual nodes, behind the scenes systemd will handle the daemons) > > I will update the Smoke suite to use ceph-ansible by default for all > tests and see how the trial runs work, Ideally we could move 50 to 60% > of the tests that can use ceph-ansible and rest can still rely on old > style so that we have good mix of overall deployment tests. > > Feedback welcome > > Thanks > Vasu > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
