John Capobianco, Dan Wade

Cisco pyATS - Network Test and Automation Solution (eBook, ePUB)

Data-driven and reusable testing for modern networks

• Format: ePub

Produktbeschreibung

Unlock the power of automated network testing with the Cisco pyATS framework.

Written by industry experts John Capobianco and Dan Wade, Cisco pyATS-Network Test and Automation Solution is a comprehensive guide to the Cisco pyATS framework, a Python-based environment for network testing, device configuration, parsing, APIs, and parallel programming.

Capobianco and Wade offer in-depth insights into the extensive capabilities of pyATS and the pyATS library (Genie). You'll learn how to leverage pyATS for network testing, including software version testing, interface testing, neighbor testing, and reachability testing. You'll discover how to generate intent-based configurations, create mock devices, and integrate pyATS into larger workflows using CI/CD pipelines and artificial intelligence. You'll explore the pyATS Blitz feature, which introduces a low-code no-code approach to network testing by allowing you to configure devices and write test cases using YAML, much like Ansible. And you'll learn how to reset devices during or after testing with the pyATS Clean feature, build a pyATS image from scratch for containerized application deployment, and much more.

Whether you're a network professional, software developer, or preparing for the Cisco DevNet Expert Lab exam, this book is a must-have resource.

Understand the foundations of NetDevOps and the modern network engineer's toolkit

• Install, upgrade, and work with the pyATS framework and library
• Define test cases, control the flow of test execution, and review test results with built-in reporting features
• Generate automated network documentation with Jinja2 templates and Genie Conf objects
• Apply CI/CD practices in network automation with GitLab, Ansible, and pyATS
• Leverage artificial intelligence in pyATS for enhanced network automation

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Produktdetails

• Verlag: Pearson ITP
• Altersempfehlung: ab 18 Jahre
• Erscheinungstermin: 25. Juli 2024
• Englisch
• ISBN-13: 9780138031787
• Artikelnr.: 72256890

Autorenporträt

John Capobianco has a dynamic and multifaceted career in IT and networking, marked by significant contributions to both the public and private sectors. Beginning his journey in the field as an aluminum factory worker, Capobianco's resilience and dedication propelled him through college, earning a diploma as a Computer Programmer Analyst from St. Lawrence College. This initial phase set the foundation for a career underpinned by continuous learning and achievement, evident from his array of certifications, including multiple Cisco certifications as well as Microsoft certification.

Transitioning from his early educational accomplishments, Capobianco's professional life has spanned over two decades, featuring roles that showcased his technical prowess and strategic vision. His work has significantly impacted both the public and private sectors, including notable positions at the Parliament of Canada, where he served as a Senior IT Planner and Integrator, and at Cisco, where he began as a Developer Advocate. These roles have been instrumental in shaping his perspective on network management and security, leading to his recent advancement into a Technical Leader role in Artificial Intelligence for Cisco Secure, reflecting his commitment to integrating AI technologies for enhancing network security solutions.

In addition to his professional and technical achievements, Capobianco is also an accomplished author. His book Automate Your Network: Introducing the Modern Approach to Enterprise Network Management, published in March 2019, encapsulates his philosophy toward leveraging automation for efficient and effective network management. He is dedicated to lifelong learning and professional development, supported by a solid foundation in education and a broad spectrum of certifications, and now aims to share his knowledge with others through this book, YouTube videos, and blogs. John can be found on X using @john_capobianco.

Dan Wade is a Network and Infrastructure Automation Practice Lead at BlueAlly. As part of the Solutions Strategy team at BlueAlly, he is responsible for developing network and infrastructure automation solutions and enabling the sales and consulting teams on delivery of the developed solutions. Solutions may include infrastructure provisioning, configuration management, network source of truth, network observability, and, of course, automated testing and validation. Previous to this role, Dan worked as a consulting engineer with a focus on network automation.

Dan has more than seven years of experience in network automation, having worked with automation tooling and frameworks such as Ansible and Terraform, and Python libraries, including Nornir, Netmiko, NAPALM, Scrapli, and Python SDKs. Dan has been working with pyATS and the pyATS library (Genie) for the past four to five years, which has inspired him to embrace automated network testing. In 2021, Dan contributed to the genieparser library with a new IOS XE parser. He also enjoys creating his own open-source projects focused on network automation. Dan holds two professional-level certifications from Cisco: Cisco DevNet Professional and CCNP Enterprise. He is also a member of the Cisco DevNet 500 and Cisco Champions program.

Dan enjoys sharing knowledge and experience on social media with blog posts and YouTube videos as well as participating in podcast episodes. He's passionate about helping others explore network automation and advocating how network automation can empower, not replace, network engineers. You can find him on social media @devnetdan.

Inhaltsangabe

    Introduction xxx
Chapter 1 Foundations of NetDevOps 1
    Traditional Network Operations 2
    Software Development Methodologies 11
    NetDevOps 14
    Comparing Network Automation Tools 21
    The Modern Network Engineer Toolkit 22
    CI/CD 32
    Summary 35
    References 36
Chapter 2 Installing and Upgrading pyATS 37
    Installing pyATS 37
    Upgrading pyATS 42
    Troubleshooting pyATS 45
    Summary 47
Chapter 3 Testbeds 49
    What Is YAML? 49
    What Is a Testbed? 51
    Device Connection Abstractions 60
    Testbed Validation 63
    Dynamic Testbeds 66
    Intent-based Networking with Extended Testbeds 68
    Summary 70
Chapter 4 AEtest Test Infrastructure 73
    Getting Started with AEtest 74
    Testscript Structure 75
    AEtest Object Model 82
    Runtime Behavior 85
    Test Results 88
    Processors 91
    Data-Driven Testing 94
    Running Testscripts 108
    Testscript Flow Control 117
    Reporting 126
    Debugging 133
    Summary 134
Chapter 5 pyATS Parsers 137
    Vendor-Agnostic Automation 138
    pyATS learn 139
    pyATS Parsers 146
    Parsing at the CLI 148
    Parsing with Python 159
    Dictionary Query 160
    Differentials 162
    Summary 167
Chapter 6 Test-Driven Development 169
    Introduction to Test-Driven Development 170
    Applying Test-Driven Development to Network Automation 172
    Introduction to pyATS 174
    The pyATS Framework 175
    Summary 187
    Endnotes 188
Chapter 7 Automated Network Documentation 189
    Introduction to pyATS Jobs 190
    Running pyATS Jobs from the CLI 196
    pyATS Job CLI Logs 199
    pyATS Logs HTML Viewer 203
    Jinja2 Templating 205
    Business-Ready Documents 206
    Summary 232
    References 232
Chapter 8 Automated Network Testing 233
    An Approach to Network Testing 234
    Software Version Testing 235
    Interface Testing 243
    Neighbor Testing 259
    Reachability Testing 262
    Intent Validation Testing 267
    Feature Testing 271
    Summary 276
Chapter 9 pyATS Triggers and Verifications 279
    Genie Objects 279
    Genie Harness 282
    Verifications 286
    Triggers 290
    Trigger and Verification Example 296
    Summary 301
Chapter 10 Automated Configuration Management 303
    Intent-Based Network Configuration 303
    Generating Configurations with pyATS 304
    Configuring Devices with pyATS 309
    Summary 320
Chapter 11 Network Snapshots 321
    Network Profiling 321
    Comparing Network State 324
    Polling Expected State 332
    Robot Framework with Genie 333
    Summary 335
    References 335
Chapter 12 Recordings, Playbacks, and Mock Devices 337
    Recording pyATS jobs 337
    Playback Recordings 341
    Mock Devices 342
    Mock Device CLI 344
    Summary 345
Chapter 13 Working with Application Programming Interfaces (API) 347
    pyATS APIs 347
    REST Connector 353
    YANG Connector 385
    gNMI 389
    Summary 395
Chapter 14 Parallel Call (pcall) 397
    Scaling Performance 397
    Parallel Call (pcall) 400
    Performance Comparison 406
    Summary 409
Chapter 15 pyATS Clean 411
    Getting Started 411
    Clean YAML 423
    Clean Execution 436
    Developing Clean Stages 443
    Summary 456
Chapter 16 pyATS Blitz 459
    Blitz YAML 459
    Blitz Usage 481
    Blitz Development 481
    Custom Blitz Actions 481
    Custom Blitz Sections 482
    Useful Tips 483
    Summary 484
Chapter 17 Chatbots with Webex 485
    Integrating pyATS with Webex 486
    pyATS Job Integration 487
    pyATS Health Check Integration 489
    Adaptive Cards 490
    Customized Job Notifications 492
    Summary 502
Chapter 18 Running pyATS as a Container 503
    Introduction to Containers 504
    pyATS Official Docker Container 506
    pyATS Image Builder 507
    Building a pyATS Image from Scratch 510
    Summary 513
Chapter 19 pyATS Health Check 515
    Health Checks 515
    Custom Health Checks 517
    Health Check Usage 523
    Summary 525
Chapter 20 XPRESSO 527
    Installing XPRESSO 529
    Getting Started with XPRESSO 536
    Transforming a pyATS Job into XPRESSO 538
    Summary 556
Chapter 21 CI/CD with pyATS 557
    What Is CI/CD? 557
    CI/CD In NetDevOps 560
    NetDevOps Scenario 562
    NetDevOps in Action 565
    Whats Next? 572
    Summary 573
Chapter 22 Robot Framework 575
    What Is the Robot Framework? 575
    Getting Started with Robot Framework 576
    Robot Integration with pyATS 582
    Summary 590
Chapter 23 Leveraging Artificial Intelligence in pyATS 591
    OpenAI API 597
    Retrieval Augmented Generation with LangChain 612
    Rapid Prototyping with Streamlit 621
    Summary 631
Appendix A Writing Your Own Parser 633
Appendix B Secret Strings 651
 
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