The network space for the cluster space or the public space may have
addresses in a different subnet than the one that is currently assigned
to the unit. In this case, the attempt to look up the netmask results in
a value of None, which in turn causes charmhelpers to raise an
AddrFormatError when attempting to determine the CIDR.
Handle this case within the interface and return None for the respective
CIDR. This may cause some issues where the public or cluster CIDRs are
not resolvable, however the charm interface already expects to provide
None if the CIDR cannot be determined.
A better, however more invasive, change would be to change out the calls
in the ceph-mon charm to use the network_get calls rather than
network_get_primary_address. Per the documentation for the network
primitives, it appears that the cidr can still be empty and is likely to
still lead to the inability to resolve the CIDR locally.
This change will primarily focus on handling the inability to resolve a
CIDR locally, postponing the network_get transformation this late in the
cycle.
Closes-Bug: #1898299
Change-Id: If1538eb645577653cada770211fd445b76284fd3
In some situations the charm will call out to us thinking it has
relations when it has not.
Change-Id: If96f1501892784d7addedbbd7eca55dc8e7bb9ba
Closes-Bug: #1822102
Billy Olsen