Pretty graphs, for varying time periods: daily, weekly, monthly, yearly.
View data from a specific time period by going to Details, then dragging the thumbs at the bottom of the graph.
Top-N talkers also available from Details page: scroll to the bottom of the page, configure “Options”, the click “process”
Automatically detects the netflow exporter(s).
Lightweight – Runs on a modest computer. Works great if you’re only handling a single home-router’s flow exports. I haven’t tested it with more exporters/more traffic.
The Docker container displays graphs “out of the box”.
Home page shows 12 charts, one each for flows/sec, packets/sec, and bits/sec, for each of the four time periods. This makes it hard to know what to “focus on” when you’re just starting up, since none of the charts has very much data.
Also, showing charts with “Flows/sec” makes it seem as if that’s a critical statistic. But Bit/sec is more important (IMHO).
Selecting a time period to view is a little clunky. (It’d be fun simply to drag across the graph…)
Alerts and Stats seem a bit inscrutable.
I briefly tried to install the “FlowDoh” plugin that purports to display Top-N talkers. It was probably my error, but it just didn’t work after a “good try” to use it.
As-is, this Docker instance only handles a single exporter (my home router), since the Docker networking doesn’t distinguish external exporter addresses.
Webview Netflow Reporter is a lightweight Netflow collector and web display tool based on wvnetflow and flow-tools in a Docker container. Webview Netflow Reporter was created by Craig Weinhold firstname.lastname@example.org. The original wvnetflow site is hosted at SourceForge.net.
But there was so much boilerplate that it was hard to see what was happening, and hard to steer away from its preconceptions to customize it for my needs. Here’s what I wish someone had told me a few weeks ago:
I found create-react-app – a Facebook-supported tool for creating a basic React application. Although it’s a simple app, create-react-app brings along all the modern Webpack facilities without farbling around with configuration. You can focus on the code that’s important. See: Create Apps with No Configuration and the Guide for create-react-app
In addition to the static pages, my application also needed to get data from a separate (“api”) server. There’s a great post from fullstackreact.com that shows how to create and integrate a server (to handle the API) alongside the Webpack-provided development server that handles the GUI. See: How to get “create-react-app” to work with your API
Finally (and too late to save me lots of work…), I found Dan Abramov’s React Makes You Sad flow chart. Regrettably, I took most of the “wrong” turns he depicts. But I am now happily working in a vastly simpler environment using the tools above.
TL;DR Dan Abramov is right (he’s always right 🙂 ) When you’re just getting started with React development, start simple. Follow the steps on the React Makes You Sad page. Maybe use create-react-app for your first prototype. And only add new technologies/packages/etc. when you understand why you need them.
I did get my 2.0L Goodwill package. It took about four weeks to arrive, and then I promptly used more than half of it on transmission service at VW. Sigh.
They have announced a Goodwill Package for owners of 3.0L diesel engines. That program expires on 31 July 2016 – hurry up!
There’s a hearing on the settlement package scheduled for 26 July 2016. If the judge approves it (highly likely), then the buyback/cash payments/other benefits will be available to TDI owners “in fall 2016.” See the announcements at vwdieselinfo.com.
I’m one of the “lucky ones”… A “proud” owner of a 2010 VW Jetta Diesel 2.0 Liter engine. I’m afraid to look at the loss of value in the Kelley Blue Book from a year ago.
I signed up today for the Goodwill Package. As partial compensation for the loss of value and hassle, VW provides a $500 prepaid card to spend anywhere, a $500 card to use at a VW dealership, plus three years of Roadside Assistance.
So I’m going to use the cards to pay for needed repairs to the Jetta: one at my local garage that I trust, and one for (still other) repairs at the local VW dealer. Regrettably, I don’t think either card will cover all the expense 🙁
But… I guess I am sort of lucky – I just squeaked by the deadline. The expiration for the Goodwill Package is the end of this month – 30 April 2016. All you Jetta owners – get on the stick! Go to https://www.vwdieselinfo.com/goodwill_package/ and type in your VIN.
In it, we talked about the definition of bufferbloat, and how it harms the performance of VoIP, gaming, and general internet use. (It’s the reason our children say, “The internet is slow today, Daddy.”) I also described how the CoDel algorithm, and its fq_codel implementation in Linux makes the problem go away.
The most fun was the CoDel demonstration, which occurs near the end of the podcast. The podcast was recorded over Skype. When I turned on many netperf upload and download sessions to fully load my 7mbps/768kbps DSL link, the quality degraded without fq_codel. But it bounced right back when I re-enabled it.
[Update Sep 2016: I just posted a support request with Webstorm asking for an updated tutorial on this subject. It’s Ticket WEB-23528]
It recently became possible to debug both server-side and client webpack applications with JetBrains’ WebStorm. The instructions came from a ticket WEB-20781, but they’re not in one place, so I figured I would write them out.
My application was built using react-starter-kit 0.5.1 – which is the current build as of mid-March 2016. These steps worked for me with WebStorm 2016.1 on OSX 10.10.5.
Update: WebStorm 2016.1 can automatically create the React Starter Kit 0.5.1 when you choose New Project…
Debugging Server-side Code
Clone the react-starter-kit repo, then npm install as usual.
You’ll need to tell webpack to generate source maps when debugging. Look in webpack.config.js for a line containing devtool (near line 204), and change it to: devtool: DEBUG ? 'source-map' : false,
You also have to remove references to “hash” from the output filenames. Look in the same file near line 156 for a line like this, and change it to: filename: DEBUG ? '[name].js' : '[name].[hash].js',
Create a new Run/Debug Configuration. Choose Run -> Edit Configuration, then add a “Node.js” item. Give the configuration a name, and if it isn’t already there, enter the path to your Node.js binary.
Enter the path to your react-starter-kit project folder in “Working Directory”.
Save the configuration by clicking OK.
Build all the files by double-clicking “build” in the npm panel, or typing npm build in the command line.
Set some breakpoints in the server-side code.
In WebStorm, choose Debug (Ctl-D) for the configuration you created in 4. above. WebStorm starts debugging your server-side code, and should stop at breakpoints as expected.
Debugging Client-side Code
I haven’t needed to try these steps yet, but I understand this is the procedure:
Follow Steps 1-3 above.
Enter the URL to your app in the “URL:” field. For react-starter-kit, it’s http://localhost:3000
Save the configuration by clicking OK.
Start the application by clicking start in the npm panel, or typing npm start from the command line.
Set some breakpoints in the client-side code. WebStorm should be debugging your client-side code, and should stop at breakpoints as expected.
Do you have comments/suggestions/improvements to these procedures? Leave a comment…
I wanted to learn React, and I have been wandering around the Internet, looking at a zillion “how to get started” tutorials. I’m not sure what made me stop and look hard at Hacking with React, but I’m so glad I did.
a progression of straightforward, short lessons toward a working example program,
an interesting application (not another To-Do app, thank FSM!),
a Howto for setting up some of the confusing Node.js tooling (webpack, ESLint),
introduction to testing with Jest,
a decent understanding of how all these tools work together, and of course,
a great walkthrough of the concepts behind React.
At the end of the forty-some tasks (which take a while to complete if you actually do the work of understanding each lesson) you have a working React application, and a pretty good understanding of the basics of starting and building a React/Node application
The book is free to read, but you should buy this book to reward this excellent work. For $10, you’ll learn a lot.