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Another implicit invariant in the data model is that edges are always of the form (local -> remote). That is, the source of an edge must always be a node that originates from within Scope's domain of visibility. This was evident by the presence of ingress and egress fields in edge/aggregate metadata. When building the sniffer, I accidentally and incorrectly violated this invariant, by constructing distinct edges for (local -> remote) and (remote -> local), and collapsing ingress and egress byte counts to a single scalar. I experienced a variety of subtle undefined behavior as a result. See #339. This change reverts to the old, correct methodology. Consequently the sniffer needs to be able to find out which side of the sniffed packet is local v. remote, and to do that it needs access to local networks. I moved the discovery from the probe/host package into probe/main.go. As part of that work I discovered that package report also maintains its own, independent "cache" of local networks. Except it contains only the (optional) Docker bridge network, if it's been populated by the probe, and it's only used by the report.Make{Endpoint,Address}NodeID constructors to scope local addresses. Normally, scoping happens during rendering, and only for pseudo nodes -- see current LeafMap Render localNetworks. This is pretty convoluted and should be either be made consistent or heavily commented.
Scope
Overview
Weave Scope automatically generates a map of your containers, enabling you to intuitively understand, monitor, and control your applications.
Please note that the code, and especially the building and running story, is in a prerelease state. Please take a look, but don't be surprised if you hit bugs or missing pieces.
Getting started
sudo wget -O /usr/local/bin/scope \
https://github.com/weaveworks/scope/releases/download/latest_release/scope
sudo chmod a+x /usr/local/bin/scope
sudo scope launch
This script will download and run a recent Scope image from the Docker Hub.
Now, open your web browser to http://localhost:4040. (If you're using
boot2docker, replace localhost with the output of boot2docker ip.)
Build
make deps
make
This will produce a Docker image called weaveworks/scope.
Note that the repository contains a copy of the compiled UI. To build a fresh UI from the source in the client subdirectory, and re-build the Docker container,
make scope_ui_build.tar
make static
make
Run
./scope launch