Thanks James for this quick and clear answer!
Neil
On Tue, Sep 13, 2016 at 8:46 PM, James Page <[email protected]> wrote:
> 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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