ceph clients don't honour ceph-public-network

[Felipe Reyes]

Ceph charm allows users to define two different networks, one for
the internal communication[0] and another one for public facing
communication (clients)[1], when a user is taking advantage of
this features and relate ceph-radosgw , the latter will blindly
use the private-address to talk to ceph, which in most cases
won't be able to connect to it.

ceph-radosgw should consume information provided by ceph at
relation time to know which network should be used to talk to, or
expose a configuration just like ceph does (ceph-public-network)

[0] https://jujucharms.com/ceph/trusty#charm-config-ceph-cluster-network
[1] https://jujucharms.com/ceph/trusty#charm-config-ceph-public-network

[Edward Hope-Morley (hopem)]

This actually afftects all ceph client charms since they all use private-address:

http://bazaar.launchpad.net/~charm-helpers/charm-helpers/devel/view/head:/charmhelpers/contrib/storage/linux/ceph.py#L205

[Edward Hope-Morley (hopem)]

Having taken a closer look at some of the code it seems that this function is not actually used by every charm. Need to double check all clients to confirm and if true we should delete this code.

[James Page (james-page)]

The cinder glance and nova-compute charms all use:

class CephContext(OSContextGenerator):
    """Generates context for /etc/ceph/ceph.conf templates."""
    interfaces = ['ceph']

    def __call__(self):
        if not relation_ids('ceph'):
            return {}

        log('Generating template context for ceph', level=DEBUG)
        mon_hosts = []
        auth = None
        key = None
        use_syslog = str(config('use-syslog')).lower()
        for rid in relation_ids('ceph'):
            for unit in related_units(rid):
                auth = relation_get('auth', rid=rid, unit=unit)
                key = relation_get('key', rid=rid, unit=unit)
                ceph_pub_addr = relation_get('ceph-public-address', rid=rid,
                                             unit=unit)
                unit_priv_addr = relation_get('private-address', rid=rid,
                                              unit=unit)
                ceph_addr = ceph_pub_addr or unit_priv_addr
                ceph_addr = format_ipv6_addr(ceph_addr) or ceph_addr
                mon_hosts.append(ceph_addr)