Change the signature of GuaranteedUpdate so that TTL can
be more easily preserved. Allow a simpler (no ttl) and
more complex (response and node directly available, set ttl)
path for GuaranteedUpdate. Add some tests to ensure this
doesn't blow up again.
* Add an allocator which saves state in etcd
* Perform PortalIP allocation check on startup and periodically afterwards
Also expose methods in master for downstream components to handle IP allocation
/ master registration themselves.
external load balancers up-to-date based on the service's specs, using
the new DeltaFIFO watch queue class. Remove the old registry REST
handler code for creating/updating/deleting load balancers.
Also clean up a bunch of the GCE cloudprovider code related to load balancers.
* Improper format specifier (e.g. %s for bools or %s for ints)
* More or less parameters than format specifiers
* Not calling a formatting function when it should have (e.g. Error() instead of Errorf())
Instead of endpoints being a flat list, it is now a list of "subsets"
where each is a struct of {Addresses, Ports}. To generate the list of
endpoints you need to take union of the Cartesian products of the
subsets. This is compact in the vast majority of cases, yet still
represents named ports and corner cases (e.g. each pod has a different
port number).
This also stores subsets in a deterministic order (sorted by hash) to
avoid spurious updates and comparison problems.
This is a fully compatible change - old objects and clients will
keepworking as long as they don't need the new functionality.
This is the prep for multi-port Services, which will add API to produce
endpoints in this new structure.
Dependency chain is now api -> api/rest -> apiserver. Makes the
interfaces much cleaner to read, and cleans up some inconsistenties
that crept in along the way.
Some load balancers (particularly AWS ELB) define the public endpoint
as a hostname (instead of using IP addresses).
This is a partial fix for #5224; there will also be some proxy work.
If `kube-apiserver` is started before `etcd` is reachable, `kube-apiserver`
fails to create those services.
However, in the `Create` function, an IP has already been reserved for them.
When `etcd` comes back, the `Create` function fails because it considers that
the IP is already used.
If the service couldn't be created, the reserved IP should be released.
