Commit Graph

2 Commits

Author SHA1 Message Date
Kir Kolyshkin 6d85a4f5f8 Fix repo references in docs
Since CLI was moved to a separate repo, these references are incorrect.
Fixed with the help of sed script, verified manually.

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>
2017-07-28 10:32:42 -07:00
Brian Goff d8e04f68d3 Add support for metrics plugins
Allows for a plugin type that can be used to scrape metrics.
This is useful because metrics are not neccessarily at a standard
location... `--metrics-addr` must be set, and must currently be a TCP
socket.
Even if metrics are done via a unix socket, there's no guarentee where
the socket may be located on the system, making bind-mounting such a
socket into a container difficult (and racey, failure-prone on daemon
restart).

Metrics plugins side-step this issue by always listening on a unix
socket and then bind-mounting that into a known path in the plugin
container.

Note there has been similar work in the past (and ultimately punted at
the time) for consistent access to the Docker API from within a
container.

Why not add metrics to the Docker API and just provide a plugin with
access to the Docker API? Certainly this can be useful, but gives a lot
of control/access to a plugin that may only need the metrics. We can
look at supporting API plugins separately for this reason.

Signed-off-by: Brian Goff <cpuguy83@gmail.com>
2017-06-02 00:11:05 +00:00