Puppet is nothing but configuration management tool — puppet used for deploying, configuring and managing the servers. Puppet enables the system administrators to work faster and smoother with the help of automation. Almost 22 new organizations per day use Puppet for the first time. Puppet has used commercially, since Puppet keeps on improving and refining.
Puppet has a website with hundreds of pages of documentation maintained by the community of users, adding content and modifying it, is allowed to the user who is part of that community. Website It also contains comprehensive references for both languages and resource types.
Besides, it is easy to find out the solution for your puppet problem because multiple mailing lists discussed here actively. Puppet runs on that operating system, which supports Ruby. Example are windows, Linus, CentOS, etc.
It runs on new as well as outdated operating system and runs on Ruby versions too. To go into the details of Puppet, first understand the concept of configuration management, need of configuration management.
Usually, System Administrators perform repetitive tasks like installation of servers and configuration of servers, etc. System admin can automate those tasks by writing the script for them. It will be useful in case of a small organization having small infrastructure whereas, in the case of organizations having large infrastructures, it becomes a tedious job to write the script. Configuration management is the practice of handling changes systematically in the system so that system maintains its integrity over time.
For project management and the audit process, configuration management allows access to the accurate historical record of the system state. The best example to explain here is the NYSE, i. New York Stock Exchange.
Google Puppeteer tutorial : 12 examples to play with
This leads to a loss of millions of dollars. The new software installed on ten terminals out of 24 trading terminals. Those systems were tested the night before. Whereas in next morning, ten terminals failed to operate correctly. The new software installation put the NYSE into this problem.
There is a need to uninstall the latest software from terminals and switch to the old one. In this scenario, possibly to you may think that the configuration management process of NYSE gets fail to manage it.
Web Scraping with Puppeteer…
Configuration management process recovers the NYSE in 90 minutes only, which is very fast.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again.
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Python Branch: dev. Find file.How to bypass reCAPTCHA with Puppeteer and Headless Chrome
Sign in Sign up. Go back. Launching Xcode If nothing happens, download Xcode and try again. Latest commit. Latest commit 56f May 10, It can also be configured to use full non-headless Chrome or Chromium. Most things that you can do manually in the browser can be done using Puppeteer!
Here are a few examples to get you started:. Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.
For details, see the Google Developers Site Policies. Fundamentals Tools Updates Case Studies. Tools for Web Developers. Get Started. API Reference. Headless Chrome. We've created a set of resources to help you ensure your site remains available and accessible to all during the COVID situation.
What can I do? Here are a few examples to get you started: Generate screenshots and PDFs of pages.
Scrap data from web, test your user interfaces, render your website to check SEO related things will be covered in this post. You want to learn what is Puppeteer and how to install it? Check the end of this post. The first basic thing is to visit a website with Puppeteer.
Screenshot can take some optional parameters. What if i want to take a screenshot of a specific region in a page? For example i want to automate screenshotting Amazon navigation header… Possible with the Clip option that has x,y coordinates and width and height parameters :.
First go to device descriptor file and choose your preferred device name. Here we are visiting google. We load the page, we wait for an element to be sure of its load. Then we use page. Line 5, we set the referer in HTTP header to avoir detecting us as a bot.
Now you may asking yourself how to set up a proxy to avoid problems with some websites. Thank you Eric for claryfing this. What i mean with that : Google Chrome 41 I will write a post for a more complete Googlebot like environment.
Note : If you install Chrome 41, it will automatically update to latest version. Eric BidelmanGoogle engineer working on headless Chrome, has published a cool script checking a website againt Google WRS features and alert you if your website does implement a non supported stuff.
Here another useful thing with Puppeteer we can intercept HTTP requests and abort some of them depending on the request url, type. We could use this feature to automate 3rd party scripts performance audit. We block scripts and see how do they actually cost on a website performance. You would need to grab the HTML source of a loaded page?
Yesterday Bill asked on Twitter if people test their contact forms time to time to ensure that they still working. The fun fact : I was just writing this part of the post. So here i share with you how we can test my contact form.
Note : The selectors seem to be complicated but here is how you could get any selector on any form :. Useful but only for on-shot testing. It would be much better to make this run on a regular basis no? We schedule the script to run every Monday on 10 Am so we will receive a testmail. After my last talk about webperformance, many of you asked me about automating code coverage check in order to integrate it with your CI for example.
You can check for it manually through Chrome Dev Tools console or Google Lighthouse performance audit.
Web Scraping with a Headless Browser: A Puppeteer Tutorial
Last for this post cool stuff we can do with Puppeteer is to record a tracing and save it. The saved Json file could be imported by Chrome to audit performance and scripting issues. With Google Puppeteer, the same concept, Google Chrome is the puppet that we will manipulate to do some tasks on web.Released: Sep 26, View statistics for this project via Libraries.
This tutorial is beginner friendly, no advanced knowledge of code is required. All the code will be available in the given repository :. YES we can take screenshots in puppeteer. So what this example does is it uses async IIFE and wraps the whole script inside it. And if you are struggling with code always remember the link to the repo is given above. Now run this script with If everything went well you would see an example.
I suggest you may visit this site first to see it what we are going to do. The first step of web-scraping is to acquire the selectors. Remember when you learned CSS and there were selectors like. Also make a new file giantLeap. All the given selectors are common to every article on the page so we will use document.
There are few things to notice in the above example. Here The web scraping tutorial is almost complete now we only have to scrape the age and score of the articles in a similar fashion and store it either as a json or csv. If everything went well you would have a hackernews. Thus you have successfully scraped HackerNews. There are many things to web scraping like going to different pages etc.
I will cover them in the next part of this tutorial series. Thanks for reading this long post! I hope it helped you understand Web Scraping a little better.Before we learn Puppet, let's understand: What is Configuration Management? Configuration management is the process of maintaining software and computer systems example servers, storage, networks in a known, desired and consistent state.
It also allows access to an accurate historical record of system state for project management and audit purposes. System Administrators mostly perform repetitive tasks like installing servers, configuring those servers, etc. These professionals can automate this task, by writing scripts.
However, it is a difficult job when they are working on a massive infrastructure. The Configuration Management tool like a Puppet was introduced to resolve such issues. What is Configuration Management? What is Puppet? What are the Puppet versions?
What Puppet can do? Puppet is an open source DevOps systems management tool for centralizing and automating the configuration management process. It is used to configure, manage, deploy, and orchestrate various applications and services across the whole infrastructure of an organization. Puppet is specially designed to manage the configuration of Linux and Windows systems. Puppet comes in two versions: Open Source Puppet : It is a basic version of Puppet configuration management tool, which is also known as Open Source Puppet.
It is available directly from Puppet's website and is licensed under the Apache 2. Puppet Enterprise : Commercial version that offers features like compliance reporting, orchestration, role-based access control,GUI,API and command line tools for effective management of nodes. For example, you have an infrastructure with about servers. As a system admin, it's your role to ensure that all these servers are always up to date and running with full functionality.
System Admin working manually on the servers To do this, you can use Puppet, which allows you to write a simple code which can be deployed automatically on these servers. This reduces the human effort and makes the development process fast and effective.