98f036359b
The rendering code checks whether endpoint IPs are part of cluster-local networks. Due to the prevalence of endpoints - medium sized reports can contain many thousands of endpoints - this is performance critical. Alas the existing code performs the check via a linear scan of a list of networks. That is slow when there are more than a few. Unfortunately in some common k8s network setups, e.g. on AWS, a cluster can contain hundreds of networks, due to /32 networks derived from interfaces with multiple IPs. Here we change representation of the set of networks to a prefix tree (aka trie), which is well-suited for IP network membership checks since networks are in fact a bitstring prefixes. The specific representation is a crit-bit tree, but that choice was purely based on implementation convenience - the chosen library is the only one I could find that directly supports IP networks.
Weave Scope - Troubleshooting & Monitoring for Docker & Kubernetes
Weave Scope automatically generates a map of your application, enabling you to intuitively understand, monitor, and control your containerized, microservices based application.
Understand your Docker containers in real-time
Choose an overview of your container infrastructure, or focus on a specific microservice. Easily identify and correct issues to ensure the stability and performance of your containerized applications.
Contextual details and deep linking
View contextual metrics, tags and metadata for your containers. Effortlessly navigate between processes inside your container to hosts your containers run on, arranged in expandable, sortable tables. Easily to find the container using the most CPU or memory for a given host or service.
Interact with and manage containers
Interact with your containers directly: pause, restart and stop containers. Launch a command line. All without leaving the scope browser window.
Extend and customize via plugins
Add custom details or interactions for your hosts, containers and/or processes by creating Scope plugins; or just choose from some that others have already written at the Github Weaveworks Scope Plugins organization.
Getting started
sudo curl -L git.io/scope -o /usr/local/bin/scope
sudo chmod a+x /usr/local/bin/scope
scope launch
This script downloads and runs a recent Scope image from Docker Hub.
Now, open your web browser to http://localhost:4040. (If you're using
boot2docker, replace localhost with the output of boot2docker ip.)
For instructions on installing Scope on Kubernetes, DCOS or ECS, see the docs.
Getting help
If you have any questions about, feedback for or problems with Scope:
- Read the Weave Scope docs.
- Invite yourself to the #weave-community slack channel.
- Ask a question on the #weave-community slack channel.
- Join the Weave User Group and get invited to online talks, hands-on training and meetups in your area.
- Send an email to weave-users@weave.works
- File an issue.
Your feedback is always welcome!