Nice, I like this. +1 Marco If we have a "tips and tricks" page or charmer snippets, this should live there.
Charles Butler <charles.but...@canonical.com> - Juju Charmer Come see the future of modeling your datacenter: http://jujucharms.com On Wed, Mar 2, 2016 at 6:45 AM, Marco Ceppi <marco.ce...@canonical.com> wrote: > To answer your question anyways, you can do this with the peers relation: > > ``` metadata.yaml > peers: > cluster: > interface: my-service-cluster > ``` > > So, at anytime, in any hook you can do the following: > > ``` bash > rid=$(relation-ids cluster) > for unit in $(relation-list -r $rid); do > echo "It's a peer and confidant $unit" > done > ``` > > However, since Juju gives unique numbers for each unit, you could use a > units number to enumerate a port. You wouldn't need the peer relationship > for this directly. As an example > > ``` bash > port_start=4000 > port=$(expr $port_start + ${JUJU_UNIT_NAME##*/}) > ``` > > So if it's unit/0 you'll get 4000, if it's unit/10 you'll get 4010, etc. > Since unit numbers are unique in Juju you'll never get a conflict. > > Marco Ceppi > > On Wed, Mar 2, 2016 at 6:29 AM Tom Barber <t...@analytical-labs.com> wrote: > >> Scrap that, I have an alternative solution! >> >> -------------- >> >> Director Meteorite.bi - Saiku Analytics Founder >> Tel: +44(0)5603641316 >> >> (Thanks to the Saiku community we reached our Kickstart >> <http://kickstarter.com/projects/2117053714/saiku-reporting-interactive-report-designer/> >> goal, but you can always help by sponsoring the project >> <http://www.meteorite.bi/products/saiku/sponsorship>) >> >> On 2 March 2016 at 11:22, Tom Barber <t...@analytical-labs.com> wrote: >> >>> Morning >>> >>> I need to open an extra port for each unit in my charm, can I ask juju >>> for a count of running units in a service? >>> >>> Thanks >>> >>> Tom >>> >> >> -- >> Juju mailing list >> Juju@lists.ubuntu.com >> Modify settings or unsubscribe at: >> https://lists.ubuntu.com/mailman/listinfo/juju >> > > -- > Juju mailing list > Juju@lists.ubuntu.com > Modify settings or unsubscribe at: > https://lists.ubuntu.com/mailman/listinfo/juju > >
-- Juju mailing list Juju@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/juju
