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my-rook-config/pkg/daemon/ceph/util
Sébastien Han eb3c424d57 Ceph messengers 2 support
This commit introduces the necessary changes to support the new
messenger feature coming with Ceph Nautilus (currently in development).

What changes? Now the monitor listens on two port:

* old 6789 for messenger v1, which will help us support older client
(e,g: krbd)
* new 3300 for messengers v2, which brings new improvement in the
messaging layer. This new transport layer brings numerous advantages
such as encryption improvement, speed improvement, pluggable nature to
support different network stack than TCP and many more.

We still have one Service IP, however it has 2 ports, see:

```
NAME                      TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)             AGE
rook-ceph-mon-a           ClusterIP   10.106.217.160   <none>        3300/TCP,6789/TCP   4h
rook-ceph-mon-b           ClusterIP   10.99.36.175     <none>        3300/TCP,6789/TCP   4h
rook-ceph-mon-c           ClusterIP   10.108.220.74    <none>        3300/TCP,6789/TCP   4h
````

The `ceph.conf` has changed and we don't force the port when using an IP
address (public addr etc). Ceph, depending on its version will naturally
start the monitors on their right port, 6789.

A new --ceph-version-name CLI argument has been added to the Rook binary
so that when the pod starts it passes the ceph version name and the
configuration of the ceph.conf, as well as daemon startup flags, happen
properly.

Given that the Rook Operator remembers the port of all the monitors it
deployed (through Pod definition), this change is not an issue and will
maintain backward compatibility.

Note that to test this you must build rook with dev container image,
which contains the dev Nautilus version. So you should do something
like:

`make -j4 BASEIMAGE='ceph/daemon-base:latest-master' IMAGES='ceph' build`

Resolves: #2525
Signed-off-by: Sébastien Han <seb@redhat.com>
2019-02-22 00:09:37 +01:00
..
2019-02-22 00:09:37 +01:00