[DNM, more to come] FreeBSD: Example script of building a multijail cluster on ONE host.

[wjwithagen]

• example variation for vstart.sh to easily setup a FreeBSD cluster.

Signed-off-by: Willem Jan Withagen wjw@digiware.nl

[tchaikov]

probably we can put this script into src/script? and install it if(FREEBSD)?

[wjwithagen]

@tchaikov
We could do that instead.
Putting it in examples is a bit more "free from support" under FreeBSD, because it is just what it is: an example.
But you'd still then want to make it src/script/FreeBSD, as not to confuse other OSes?
I'm using ZFS, Jails and some other FreeBSD tricks, so it'll not work on Linux.

[tchaikov]

But you'd still then want to make it src/script/FreeBSD, as not to confuse other OSes?

yeah, makes sense to me. or rename this to src/script/build-cluster.FreeBSD.sh

[wjwithagen]

@tchaikov
Can do.

[liewegas]

why can't vstart be used?

[wjwithagen]

@liewegas
vstart is more of a script for testers, where as this would be simple way to start a cluster that looks a lot like a regular production cluster, but then on just 1 host.
But that is also one of the reasons I set DNM. And it is a vstart.sh clone but FreeBSD style using jails. Which makes each OSD live in its own OS env, still without the full overhead of a VM and virtualised disks, but still full seperation. Ceph thinks it is running on several different hosts. :-)
Reason I'm pursuing this is to see if it can be a poor mans workaround for the trouble I'm having with theutology-libvirt-Qemu-KVM.
And it will be a easy starting point for FreeBSD-ers to go and test a ceph install.

[tchaikov]

i don't follow you. so the multi-jail approach is also for testing, right? or you are just stashing your work on teuthology here?

[wjwithagen]

No not really...
It is suppossed to be in between ceph-disk and doing everything manually and ceph-deploy which I have not really looked at. And should give starting Ceph-FreeBSD user an easy entrance into Ceph.
Just an attempt to lower the entry bar for people that are interested in looking at Ceph.
But perhaps I should for the time being just move it back to my WIP, and not have it in the PR queue.

[stale]

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[gregsfortytwo]

I am closing this since it is labeled DNM and more has not yet come. ;)

[wjwithagen]

@gregsfortytwo
I had one FreeBSD tester use it.
But then he moved on, and it's improved a lot locally here.
Then I was sort of abiding my time to see if I could get ceph-volume zfs up and running first.
But IFF it needs to go back in, I'll resubmit.