Voila 3 7

The deployment docs are split up in two parts. First there is thegeneral section, which should always be followed. Then there is a cloudservice provider specific section of which one provider should be chosen.

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If you are not sure where to deploy your app, we suggest Binder or Heroku. You can testdeploying and serving your app without having to enter any credit card details,and with very little prior experience of deployments.

Setup an example project¶

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Voila for Mac 3 7介绍Voila for Mac是一个屏幕捕捉，记录和注释工具，它是一个全功能的替代Mac的屏幕捕捉和屏幕录制功能。它有一个大的和强大的集编辑，整理，注释和特效工具，允许用户创建并添加细节截图,MAC版下载 苹果正式版 注册版 破解版 download apple iphone ipad 苹果专卖店. Nov 01, 2020 However, thanks to Voila, now it is possible to build an interactive dashboard directly from Jupyter Notebook. In this article, I want to show you the step-by-step guide on how to create interactive plots with Jupyter Notebook, turn them into a standalone dashboard, and then deploy it on the cloud with Heroku so that other people can see your.

1. Create a project directory of notebooks you wish to display. For thistutorial we will clone Voilà and treat the notebooks folder as ourproject root.

2. Add a requirements.txt file to the project directory. This file shouldcontain all the Python dependencies your Voilà app needs to run. For thistutorial we will copy the contents of the environment.yml of Voilà.We omit xleaflet and xeus-cling because these require extra work that isbeyond the scope of this guide.

Cloud Service Providers¶

Deployment on Binder¶

Binder is one of the most accessible ways to deploy Voilà applications.The service is available at mybinder.org and is increasinglybeing used for reproducible research, making it an excellent fit for deploying Voilà applications.

1. Make sure the repository is publicly available (on GitHub, Gitlab or as a gist).

2. Follow this guideto prepare the repository. For simple deployments, steps listed in Setup an example project will be sufficient.

Note

Binder also supports environment.yml files and conda environments.

1. Go to mybinder.org and enter the URL of the repository.

2. In Pathtoanotebookfile, select URL and use the Voilà endpoint: voila/render/path/to/notebook.ipynb

3. Click Launch.

4. Binder will trigger a new build if this is the first launch (or if there has been new changes sincethe last build). This might take a few minutes to complete. If an image is already available,the server will be able to start within a few seconds.

Customizing Voilà on Binder¶

To specify different options (such as the theme and template), create ajupyter_config.json file at the root of the repository with the following content:

An example can be found in thevoila-demo repository.

Deployment on Heroku¶

Heroku.com is an attractive option if you want to try out deployment forfree. You have limited computing hours, however the app will alsoautomatically shutdown if it is idle.

The general steps for deployment at Heroku can be foundhere.High level instructions, specific to Voilà can be found below:

1. Follow the steps of the official documentation to install the herokucli and login on your machine.

2. Add a file named runtime.txt to the project directory with the followingcontent:

3. Add a file named Procfile to the project directory with thefollowing content if you want to show all notebooks:

   Or the following if you only want to show one notebook:

4. Initialize your git repo and commit your code. At minimum you need to commityour notebooks, requirements.txt, runtime.txt, and the Procfile.

5. Create an Heroku instance and push the code.

6. Open your web app

To resolve issues, it is useful to see the logs of your application. You can do this by running:

Deployment on Google App Engine¶

You can deploy on Google AppEngine in a 'flexible'environment. This means that the underlying machine will always run.This is more expensive than a 'standard' environment, which is similarto Heroku's free option. However, Google App Engine's 'standard'environment does not support websockets, which is a requirement forvoila.

The general steps for deployment at Google App Engine can be foundhere.High level instructions specific to Voilà can be found below:

1. Follow the 'Before you begin steps' from the official documentationto create your account, project and App Engine app.

2. Add an app.yaml file to the project directory with the following content:

3. Edit the last line if you want to show only one notebook

4. Deploy your app

5. Open your app

Running Voilà on a private server¶

Prerequisites¶

• A server running Ubuntu 18.04 (or later) with root access.

• Ability to SSH into the server and run commands from the prompt.

• The public IP address of the server.

• A domain name pointing to the IP address of the server.

Steps¶

1. SSH into the server:

2. Install nginx:

3. To check that nginx is correctly installed:

4. Create the file /etc/nginx/sites-enabled/yourdomain.com with the following content:

5. Enable and start the nginx service:

6. Install pip:

7. Follow the instructions in Setup an example project, and install the dependencies:

8. Create a new systemd service for running Voilà in /usr/lib/systemd/system/voila.service.The service will ensure Voilà is automatically restarted on startup:

In this example Voilà is started with voila--no-browservoila/notebooks/basics.ipynb to serve a single notebook.You can edit the command to change this behavior and the notebooks Voilà is serving.

1. Enable and start the voila service:

Note

To check the logs for Voilà:

1. Now go to yourdomain.com to access the Voilà application.

Viola 30th

Enable HTTPS with Let's Encrypt¶

1. Install certbot:

2. Obtain the certificates from Let's Encrypt. The --nginx flag will edit the nginx configuration automatically:

3. /etc/nginx/sites-enabled/yourdomain.com should now contain a few more entries:

4. Visit yourdomain.com to access the Voilà applications over HTTPS.

5. To automatically renew the certificates (they expire after 90 days), open the crontab file:

And add the following line:

For more information, you can also follow the guide on the nginx blog.

Sharing Voilà applications with ngrok¶

ngrok is a useful tool to expose local servers to the public internet over secure tunnels.It can be used to share Voilà applications served by a local instance of Voilà.

The main use case for using Voilà with ngrok is to quickly share a notebook as an interactive application withouthaving to deploy to external hosting.

Warning

Don't forget to exercise caution before exposing local apps and data to the public over the internet.

While Voilà does not permit arbitrary code execution, be aware that sensitive information could be exposed,depending on the content and the logic of the notebook.

It's good practice to keep the ngrok tunnel connection short-lived, and limit its use to quick sharing purposes.

Setup ngrok¶

To setup ngrok, follow the Download and setup ngrok guide.

Sharing Voilà applications¶

1. Start Voilà locally: voila--no-browsermy_notebook.ipynb

2. In a new terminal window, start ngrok: ngrokhttp8866

3. Copy the link from the ngrok terminal window. The links looks like the following: 8bb6fded.ngrok.io

4. Send the link

5. When using the ngrok link, the requests will be forwarded to your local instance of Voilà.

Boom 2 by Global Delight is an all-new system-wide Mac audio app that is designed especially for OS X Yosemite, comes with a smart interface, self-calibrates itself according to the type of Mac, offers hands-on advanced equalizer controls and amazing audio effects, giving you a personalized acoustic experience right on your Mac.

UDUPI, INDIA, DECEMBER 3rd, 2014 - Global Delight is proud to announce Boom 2, a giant leap up from the popular Mac audio app, Boom.

First released in 2011, Boom was then a simple system-wide volume booster and equalizer that made everything sound louder, clearer and better. On its debut, it went on to win Macworld's Best of Show award. With its popularity only increasing, Boom started to receive praise from both, industry watchers and users alike. It now has over 1 million satisfied users and a further 10000 Boom 2 beta users who are experiencing true audio on their Macs.

Boom 2 is an all-new pro audio app built from the ground up for Mac. It perfectly complements the latest OS X Yosemite and sports a gorgeous look that goes well with both, the regular as well as Dark Mode in Yosemite. This new version introduces beautifully crafted advanced equalizers with Frequency Constrain controls, audio personalization by customizing the sound output according to the Mac type, cool new audio effects for unparalleled sound quality, intelligent file audio boosting and well-calibrated system-wide volume boosting. By converging all these features in an easy-to-use user interface, Boom 2 is set to deliver a stunning audio performance.

What's new in Boom 2:

• Auto-Calibration of sound output according to the type of Mac
• Designed for Yosemite along with 64-bit compatibility
• Powerful system-wide volume boosting
• All-new one-click audio effects
• Advanced and precise equalizer controls
• Intelligent file audio boost

To specify different options (such as the theme and template), create ajupyter_config.json file at the root of the repository with the following content:

An example can be found in thevoila-demo repository.

Deployment on Heroku¶

Heroku.com is an attractive option if you want to try out deployment forfree. You have limited computing hours, however the app will alsoautomatically shutdown if it is idle.

The general steps for deployment at Heroku can be foundhere.High level instructions, specific to Voilà can be found below:

1. Follow the steps of the official documentation to install the herokucli and login on your machine.

2. Add a file named runtime.txt to the project directory with the followingcontent:

3. Add a file named Procfile to the project directory with thefollowing content if you want to show all notebooks:

   Or the following if you only want to show one notebook:

4. Initialize your git repo and commit your code. At minimum you need to commityour notebooks, requirements.txt, runtime.txt, and the Procfile.

5. Create an Heroku instance and push the code.

6. Open your web app

To resolve issues, it is useful to see the logs of your application. You can do this by running:

Deployment on Google App Engine¶

You can deploy on Google AppEngine in a 'flexible'environment. This means that the underlying machine will always run.This is more expensive than a 'standard' environment, which is similarto Heroku's free option. However, Google App Engine's 'standard'environment does not support websockets, which is a requirement forvoila.

The general steps for deployment at Google App Engine can be foundhere.High level instructions specific to Voilà can be found below:

1. Follow the 'Before you begin steps' from the official documentationto create your account, project and App Engine app.

2. Add an app.yaml file to the project directory with the following content:

3. Edit the last line if you want to show only one notebook

4. Deploy your app

5. Open your app

Running Voilà on a private server¶

Prerequisites¶

• A server running Ubuntu 18.04 (or later) with root access.

• Ability to SSH into the server and run commands from the prompt.

• The public IP address of the server.

• A domain name pointing to the IP address of the server.

Steps¶

1. SSH into the server:

2. Install nginx:

3. To check that nginx is correctly installed:

4. Create the file /etc/nginx/sites-enabled/yourdomain.com with the following content:

5. Enable and start the nginx service:

6. Install pip:

7. Follow the instructions in Setup an example project, and install the dependencies:

8. Create a new systemd service for running Voilà in /usr/lib/systemd/system/voila.service.The service will ensure Voilà is automatically restarted on startup:

In this example Voilà is started with voila--no-browservoila/notebooks/basics.ipynb to serve a single notebook.You can edit the command to change this behavior and the notebooks Voilà is serving.

1. Enable and start the voila service:

Note

To check the logs for Voilà:

1. Now go to yourdomain.com to access the Voilà application.

Viola 30th

Enable HTTPS with Let's Encrypt¶

1. Install certbot:

2. Obtain the certificates from Let's Encrypt. The --nginx flag will edit the nginx configuration automatically:

3. /etc/nginx/sites-enabled/yourdomain.com should now contain a few more entries:

4. Visit yourdomain.com to access the Voilà applications over HTTPS.

5. To automatically renew the certificates (they expire after 90 days), open the crontab file:

And add the following line:

For more information, you can also follow the guide on the nginx blog.

Sharing Voilà applications with ngrok¶

ngrok is a useful tool to expose local servers to the public internet over secure tunnels.It can be used to share Voilà applications served by a local instance of Voilà.

The main use case for using Voilà with ngrok is to quickly share a notebook as an interactive application withouthaving to deploy to external hosting.

Warning

Don't forget to exercise caution before exposing local apps and data to the public over the internet.

While Voilà does not permit arbitrary code execution, be aware that sensitive information could be exposed,depending on the content and the logic of the notebook.

It's good practice to keep the ngrok tunnel connection short-lived, and limit its use to quick sharing purposes.

Setup ngrok¶

To setup ngrok, follow the Download and setup ngrok guide.

Sharing Voilà applications¶

1. Start Voilà locally: voila--no-browsermy_notebook.ipynb

2. In a new terminal window, start ngrok: ngrokhttp8866

3. Copy the link from the ngrok terminal window. The links looks like the following: 8bb6fded.ngrok.io

4. Send the link

5. When using the ngrok link, the requests will be forwarded to your local instance of Voilà.

Boom 2 by Global Delight is an all-new system-wide Mac audio app that is designed especially for OS X Yosemite, comes with a smart interface, self-calibrates itself according to the type of Mac, offers hands-on advanced equalizer controls and amazing audio effects, giving you a personalized acoustic experience right on your Mac.

UDUPI, INDIA, DECEMBER 3rd, 2014 - Global Delight is proud to announce Boom 2, a giant leap up from the popular Mac audio app, Boom.

First released in 2011, Boom was then a simple system-wide volume booster and equalizer that made everything sound louder, clearer and better. On its debut, it went on to win Macworld's Best of Show award. With its popularity only increasing, Boom started to receive praise from both, industry watchers and users alike. It now has over 1 million satisfied users and a further 10000 Boom 2 beta users who are experiencing true audio on their Macs.

Boom 2 is an all-new pro audio app built from the ground up for Mac. It perfectly complements the latest OS X Yosemite and sports a gorgeous look that goes well with both, the regular as well as Dark Mode in Yosemite. This new version introduces beautifully crafted advanced equalizers with Frequency Constrain controls, audio personalization by customizing the sound output according to the Mac type, cool new audio effects for unparalleled sound quality, intelligent file audio boosting and well-calibrated system-wide volume boosting. By converging all these features in an easy-to-use user interface, Boom 2 is set to deliver a stunning audio performance.

What's new in Boom 2:

• Auto-Calibration of sound output according to the type of Mac
• Designed for Yosemite along with 64-bit compatibility
• Powerful system-wide volume boosting
• All-new one-click audio effects
• Advanced and precise equalizer controls
• Intelligent file audio boost

Boom 2 is built to customize the sound output according to the Mac it's running on. Simply put, it tailors the audio to run perfectly on every Mac so as to offer a personalized and intimate audio experience. It is also designed and engineered for Yosemite and supports the 64-bit architecture for smoother performance.

Boom 2 has a measured approach when it comes to system-wide volume boosting. It intelligently makes everything coming out of any Mac's speakers sound louder, clearer and better. This is achieved in a structured way by monitoring the quality of audio that comes out of the Mac. As a result, users get to enjoy Spotify, iTunes, Netflix, YouTube and any other service like never before with Boom 2 making them come alive!

Boom 2 offers intricate and game-changing equalizers for everyone, including enthusiasts! Whether it is the 10-band equalizer or the advanced options, users have the power of finer audio control in their hands. The additional Frequency Constrain controls allow users to go all-out and fiddle with even the minute aspects of Bass, Mid and Treble frequency bands so as to enjoy the best sound output.

Making its debut in this new version are exquisite one-click Audio Effects - Ambience and Fidelity. These two cool effects enhance the quality of audio coming out of Mac speakers, making it a joy to hear. With just a click, these effects deliver an acoustic experience akin to actually being there when playing.

Ambience – Be alive and feel the music around you with Ambience. Hear notes from every single angle and corner, making it a live performance like no other.

Fidelity – Be here, there and everywhere with Fidelity. Listen to crisp and sharp tones while being surprised at how clear your Mac sounds!

Boom 2 also has another ace up its sleeve and this is especially useful to those who are on the move a lot. Users can effortlessly and safely increase the volume of their media files for consumption elsewhere like Mobiles, MP3 Players, iTunes Sync and much more. It also intelligently reads each and every file to recommend an optimal level to boost it up to. All this and more accompanied by snazzy graphics and an intuitive interface.

'Boom 2 is a massive step up from previous iterations. While Boom 1.x provided a simple way to increase volume and such, Boom 2 upgrades the entire experience. This includes several brilliant features that users can play around with to experience audio just the way they want it. All this in a setting that still possesses Boom 1.x's simplicity and ingenuity,' said Mr. Ramachandra Acharya, SVP of Global Delight.

Pricing & Availability:

Boom 2 is all-new app available to purchase from December 3rd, 2014 onwards for $14.99 on the Global Delight Webstore. Students/Educators can avail a special discounted price of $9.99 while existing Boom 1.x users (Global Delight Webstore only) can upgrade to the latest Boom 2 at a discount of 50%. A free 7- day trial and more can be experienced at http://www.globaldelight.com/boom/ The Mac App Store version will come soon.

Requirements:

Boom 2 runs on any Mac running the latest OS X Yosemite and runs even better on processors that support the 64-bit architecture. It is also fully localized into 10 international languages - Dutch, French, German, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese and Spanish.

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Contact:

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For any queries and other information like obtaining a promo code for review purposes, please contact

Guruprasad Kamath