Hi Neil On Tue, 13 Sep 2016 at 20:43 Neil Jerram <[email protected]> wrote:
> Should it be possible to run two OpenStack charm units, that both use > haproxy to load balance their APIs, on the same machine? Or is there some > doc somewhere that says that a case like that should use separate machines? > > (I'm asking in connection with the bug report at > https://bugs.launchpad.net/openstack-charm-testing/+bug/1622697.) > No - that's not currently possible. For example, if you try to place both nova-cloud-controller and cinder units on the same machine, they both assume sole control over haproxy.cfg and will happily trample each others changes. There is a doc somewhere - I'll dig it out and add to the charm-guide on docs.openstack.org. Solution: use a LXC or LXD container for each service, assuring sole control of the filesystem for each charm, avoiding said conflict. Cheers James
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