Computers

Nginx Troubleshooting

Author: Alex Kapranoff

Publisher: Packt Publishing Ltd

ISBN: 1785281798

Category: Computers

Page: 172

View: 798

Investigate and solve problems with Nginx-powered websites using a deep understanding of the underlying principles About This Book Solve problems with your Nginx-powered websites before your audience notices anything Peek into the Nginx architecture and gain knowledge that will help you be valuable to you in the long run Gain knowledge of different types of problems in a step-by-step way Who This Book Is For The book is for technical specialists who already use Nginx to serve web pages for their users. Whether you are an experienced system administrator or a new professional, this book will help you do your job in the most efficient way. What You Will Learn Detect and investigate problems with your web servers Create correct and professional configuration files Get an in-depth understanding of the web server software Interpret Nginx log files easily and with actionable insights Make your websites respond as fast as possible Prevent problems by setting up proper monitoring and alerts In Detail Nginx is clearly winning the race to be the dominant software to power modern websites. It is fast and open source, maintained with passion by a brilliant team. This book will help you maintain your Nginx instances in a healthy and predictable state. It will lead you through all the types of problems you might encounter as a web administrator, with a special focus on performance and migration from older software. You will learn how to write good configuration files and will get good insights into Nginx logs. It will provide you solutions to problems such as missing or broken functionality and also show you how to tackle performance issues with the Nginx server. A special chapter is devoted to the art of prevention, that is, monitoring and alerting services you may use to detect problems before they manifest themselves on a big scale. The books ends with a reference to error and warning messages Nginx could emit to help you during incident investigations. Style and approach This comprehensive tutorial on Nginx troubleshooting takes an practical approach to guiding you through common issues in Nginx server.
Computers

Nginx HTTP Server

Harness the power of Nginx to make the most of your infrastructure and serve pages faster than ever before, 4th Edition

Author: Martin Bjerretoft Fjordvald,Clement Nedelcu

Publisher: Packt Publishing Ltd

ISBN: 1788621972

Category: Computers

Page: 348

View: 2483

Make the most of your infrastructure and serve pages faster than ever with Nginx. Key Features Discover possible interactions between Nginx and Apache to get the best of both worlds Learn to exploit the features offered by Nginx for your web applications Get your hands on the most updated version of Nginx (1.13.2) to support all your web administration requirements Book Description Nginx is a lightweight HTTP server designed for high-traffic websites, with network scalability as the primary objective. With the advent of high-speed internet access, short loading times and fast transfer rates have become a necessity. This book is a detailed guide to setting up Nginx in ways that correspond to actual production situations: as a standalone server, as a reverse proxy, interacting with applications via FastCGI, and more. In addition, this complete direct reference will be indispensable at all stages of the configuration and maintenance processes. This book mainly targets the most recent version of Nginx (1.13.2) and focuses on all the new additions and improvements, such as support for HTTP/2, improved dynamic modules, security enhancements, and support for multiple SSL certificates. This book is the perfect companion for both Nginx beginners and experienced administrators. For beginners, it will take you through the complete process of setting up this lightweight HTTP server on your system and configuring its various modules so that it does exactly what you need quickly and securely. For more experienced administrators, this book provides different approaches that can help you make the most of your current infrastructure. Nginx can be employed in many situations, whether you are looking to construct an entirely new web-serving architecture or simply want to integrate an efficient tool to optimize your site loading speeds. What you will learn Download and install Nginx on your system Prepare a basic configuration and test your initial setup Discover the core functionality of the HTTP module Make the most of first- and third-party Nginx modules Set up Nginx to work with PHP, Python, and other applications Learn how to set up Nginx to work with Apache Fully replace Apache with Nginx Optimize your architecture with threads or load balancing Identify errors in configuration and learn basic troubleshooting techniques Consult the exhaustive directive and module index for reference Who this book is for This book is a perfect match to web administrators who are interested in solutions to optimize their infrastructure. Whether you are looking into replacing your existing web server software or integrating a new tool to cooperate with applications that are already up and running, this book is your ideal resource.
Computers

Nginx HTTP Server

Author: Clement Nedelcu

Publisher: Packt Publishing Ltd

ISBN: 1785285912

Category: Computers

Page: 318

View: 3941

Harness the power of Nginx to make the most of your infrastructure and serve pages faster than ever About This Book Discover possible interactions between Nginx and Apache to get the best of both worlds Learn to exploit the features offered by NGinx for your web applications Get the newest techniques available, designed with the latest version in mind Who This Book Is For By covering both the early setup stages and advanced topics, this book suits web administrators who interested in solutions to optimize their infrastructure, whether you are looking into replacing your existing web server software or integrating a new tool to cooperate with applications that are already up and running. If you, your visitors, and your operating system have been disappointed by Apache, this book is exactly what you need. What You Will Learn Get to know the basics of the Nginx configuration: syntax, structure, and semantics Understand the advanced load balancing functionality of Nginx and the newest innovative IO mechanisms Create virtual host configurations effortlessly Discover all the first-party modules: how to enable, configure, and use them Establish advanced rewrite rules with the Nginx Rewrite module Set up Nginx to work with PHP, Python, and more via FastCGI Configure Nginx to work as frontend for your existing HTTP server Manipulate configuration files with ease and adapt them to various situations Discover the common pitfalls and find out how to avoid them In Detail Nginx is a lightweight HTTP server designed for high-traffic websites, with network scalability as the primary objective. With the advent of high speed Internet access, short loading times and fast transfer rates have become a necessity. This free, open source solution will either come as a full replacement of other software such as Apache, or stand in front of your existing infrastructure to improve its overall speed. This book is a detailed guide to setting up Nginx in different ways that correspond to actual production situations: as a standalone server, as a reverse proxy, interacting with applications via FastCGI, and more. In addition, this complete directive reference will be your best friend at all stages of the configuration and maintenance processes. This book is the perfect companion for both Nginx beginners and experienced administrators. For beginners, it will take you through the complete process of setting up this lightweight HTTP server on your system and configuring its various modules so it does exactly what you need quickly and securely. For more experienced administrators, this book provides different approaches that can help you make the most of your current infrastructure. Nginx can be employed in many situations, whether you are looking to construct an entirely new web-serving architecture or simply want to integrate an efficient tool to optimize your site loading speeds. Style and approach This tutorial-style book includes detailed instructions on each of the processes it describes, as well as step-by-step tutorials, commented configuration sections, and in-depth module descriptions, so you can make the most of the performance potential offered by Nginx.
Computers

Nginx Essentials

Author: Valery Kholodkov

Publisher: Packt Publishing Ltd

ISBN: 1785280678

Category: Computers

Page: 150

View: 9918

Nginx is an open source and cross-platform reverse proxy server designed for low memory usage and high performance and concurrency. This book provides both basic and in-depth knowledge to help you effectively solve challenges with Nginx, or comfortably go through a transition period when switching to Nginx. Starting with the basics, you will learn by example how to set up, configure, and operate an Nginx installation and use features of Nginx to elegantly solve challenges you experience every day when running your website. You will learn to use the rewrite engine to solve day-to-day tasks and be able to configure access restrictions in Nginx. You will also be able to manage inbound traffic using a number of Nginx features and use Nginx for load balancing and fault-tolerance features. Finally, you will learn how to solve common performance problems and apply a number of performance-tuning strategies. Through easy exploration of the most intricate topics, this book aims to bring you to the next level in your Nginx experience.
Computers

DevOps Troubleshooting

Linux Server Best Practices

Author: Kyle Rankin

Publisher: Addison-Wesley

ISBN: 0133035506

Category: Computers

Page: 240

View: 2414

“If you’re a developer trying to figure out why your application is not responding at 3 am, you need this book! This is now my go-to book when diagnosing production issues. It has saved me hours in troubleshooting complicated operations problems.” –Trotter Cashion, cofounder, Mashion DevOps can help developers, QAs, and admins work together to solve Linux server problems far more rapidly, significantly improving IT performance, availability, and efficiency. To gain these benefits, however, team members need common troubleshooting skills and practices. In DevOps Troubleshooting: Linux Server Best Practices , award-winning Linux expert Kyle Rankin brings together all the standardized, repeatable techniques your team needs to stop finger-pointing, collaborate effectively, and quickly solve virtually any Linux server problem. Rankin walks you through using DevOps techniques to troubleshoot everything from boot failures and corrupt disks to lost email and downed websites. You’ll master indispensable skills for diagnosing high-load systems and network problems in production environments. Rankin shows how to Master DevOps’ approach to troubleshooting and proven Linux server problem-solving principles Diagnose slow servers and applications by identifying CPU, RAM, and Disk I/O bottlenecks Understand healthy boots, so you can identify failure points and fix them Solve full or corrupt disk issues that prevent disk writes Track down the sources of network problems Troubleshoot DNS, email, and other network services Isolate and diagnose Apache and Nginx Web server failures and slowdowns Solve problems with MySQL and Postgres database servers and queries Identify hardware failures–even notoriously elusive intermittent failures
Computers

Mastering NGINX

Author: Dimitri Aivaliotis

Publisher: Packt Publishing Ltd

ISBN: 1785283766

Category: Computers

Page: 320

View: 3890

An in-depth guide to configuring NGINX for your everyday server needs About This Book Get tips, tricks, and master insight to help you configure NGINX for any server situation Integrate NGINX into your applications architecture with is, using hands-on guidance and practical code samples that are free to use Troubleshoot configuration problems before and as they arise, for a seamless NGINX server experience Who This Book Is For This book is for system administrators and engineers who want to personalize NGINX, and design a robust configuration module to solve their hosting problems. Some knowledge of NGINX is a plus, but is not a prerequisite. What You Will Learn Compile the right third-party module to meet your needs Write an authentication server to use with the mail proxy module Create your own SSL certificates to encrypt connections Use try_files to solve your file-existence check problems Cache and compress responses to get speedier user interaction Integrate popular PHP frameworks with the FastCGI module Construct useful logging configurations In Detail NGINX is a high-performance HTTP server and mail proxy designed to use very few system resources. But despite its power it is often a challenge to properly configure NGINX to meet your expectations. Mastering Nginx is the solution – an insider's guide that will clarify the murky waters of NGINX's configuration. Tune NGINX for various situations, improve your NGINX experience with some of the more obscure configuration directives, and discover how to design and personalize a configuration to match your needs. To begin with, quickly brush up on installing and setting up the NGINX server on the OS and its integration with third-party modules. From here, move on to explain NGINX's mail proxy module and its authentication, and reverse proxy to solve scaling issues. Then see how to integrate NGINX with your applications to perform tasks. The latter part of the book focuses on working through techniques to solve common web issues and the know-hows using NGINX modules. Finally, we will also explore different configurations that will help you troubleshoot NGINX server and assist with performance tuning. Style and approach This is a mastering guide where you will follow an instructional, conversational approach working through problems and their solutions.
Computers

Nginx

From Beginner to Pro

Author: Rahul Soni

Publisher: Apress

ISBN: 1484216563

Category: Computers

Page: 240

View: 9922

Teaches you to start up Nginx and quickly take your expertise to a level where you can comfortably work with various aspects of the web server and make informed design decisions for your web farm. Nginx powers more than 40% of the top 1000 websites and is among the handful of web servers that can handle more than 10K simultaneous connections. It has some features which are simply unparalleled. Nginx: From Beginner to Pro teaches the Nginx server in a practical way. Frequently, it is found that web administrators struggle to fix the skill set gaps that happen due to a platform change. Migration from IIS & Apache becomes tedious at best. The book is targeted toward real-world administrators who would want to get up to speed as soon as possible and make good, informed design decisions. First you will set up Nginx and understand the architectural nuances. Then you will learn how to scale out, secure, monitor and troubleshoot the web server. Once you are fully comfortable with Nginx, you will start learning about migrating applications (or its part) from IIS or Apache web servers. Finally, you will learn to troubleshoot and maintain your Nginx professionally. Written by an author who has gone through the rough phase while moving from IIS/Apache to Nginx, this book is practical and filled with step-by-step instructions to make your time with Nginx as straightforward as possible. What You Will Learn Install and set up Nginx on CentOS, Ubuntu & Mac. Understand Nginx modules and compiling Nginx with appropriate modules. Learn about basic configuration and architecture along with hosting nuances. Load balance Nginx and use it as a highly available web platform. Monitor traffic and automate common administrative tasks. Use scripts to perform routine checks for health issues. Implement security and authentication in Nginx. Learn how and what to migrate from IIS & Apache web servers. Who This Book Is For Provides a crisp background of Nginx and then gears towards technical and practical topics. You need to know HTTP protocol, and have basic knowledge of Linux and networking concepts. The target audience is web administrators who would like to learn the finer nuances of Nginx, or map their existing skillset from IIS or Apache.
Computers

Mike Meyers CompTIA Network Guide to Managing and Troubleshooting Networks Fifth Edition (Exam N10-007)

Author: Mike Meyers

Publisher: McGraw Hill Professional

ISBN: 1260128512

Category: Computers

Page: 800

View: 1797

Essential Skills for a Successful IT Career Written by Mike Meyers, the leading expert on CompTIA certification and training, this up-to-date, full-color text will prepare you for the CompTIA Network+ exam N10-007 and help you become an expert networking technician. Fully revised for the latest CompTIA Network+ exam, including coverage of performance-based questions, the book contains helpful on-the-job tips, end-of-chapter practice questions, and hundreds of photographs and illustrations. Mike Meyers’ CompTIA Network+ Guide to Managing and Troubleshooting Networks, Fifth Edition covers: •Network architectures•Cabling and topology•Ethernet basics•Network installation•TCP/IP applications and network protocols•Routing•Network naming•Advanced networking devices•IPv6•Remote connectivity•Wireless networking•Virtualization and cloud computing•Mobile networking•Network operations•Managing risk•Network security•Network monitoring and troubleshooting Online content includes: •100+ practice exam questions in a customizable test engine•20+ lab simulations to help you prepare for the performance-based questions•One hour of video training from Mike Meyers•Mike’s favorite shareware and freeware networking tools and utilities Each chapter features: •Learning objectives •Photographs and illustrations •Real-world examples •Try This! and Cross Check exercises •Key terms highlighted •Tech Tips, Notes, and Warnings •Exam Tips •End-of-chapter quizzes and lab projects
Computers

Microservices

Konzeption und Design

Author: Sam Newman

Publisher: MITP-Verlags GmbH & Co. KG

ISBN: 3958450830

Category: Computers

Page: 312

View: 5263

Feingranulare Systeme mit Microservices aufbauen Design, Entwicklung, Deployment, Testen und Monitoring Sicherheitsaspekte, Authentifizierung und Autorisierung Verteilte Systeme haben sich in den letzten Jahren stark verändert: Große monolithische Architekturen werden zunehmend in viele kleine, eigenständige Microservices aufgespalten. Aber die Entwicklung solcher Systeme bringt Herausforderungen ganz eigener Art mit sich. Dieses Buch richtet sich an Softwareentwickler, die sich über die zielführenden Aspekte von Microservice-Systemen wie Design, Entwicklung, Testen, Deployment und Monitoring informieren möchten. Sam Newman veranschaulicht und konkretisiert seine ganzheitliche Betrachtung der grundlegenden Konzepte von Microservice-Architekturen anhand zahlreicher praktischer Beispiele und Ratschläge. Er geht auf die Themen ein, mit denen sich Systemarchitekten und Administratoren bei der Einrichtung, Verwaltung und Entwicklung dieser Architekturen in jedem Fall auseinandersetzen müssen. Aus dem Inhalt: Vorteile von Microservices Gestaltung von Services Ausrichtung der Systemarchitektur an der Organisationsstruktur Möglichkeiten zur Integration von Services Schrittweise Aufspaltung einer monolithischen Codebasis Deployment einzelner Microservices mittels Continuous Integration Testen und Monitoring verteilter Systeme Sicherheitsaspekte Authentifizierung und Autorisierung zwischen Benutzer und Service bzw. zwischen Services untereinander Skalierung von Microservice-Architekturen »Microservice-Architekturen besitzen viele interessante Eigenschaften, allerdings sind bei der Umstellung so einige Fallstricke zu beachten. Dieses Buch wird Ihnen helfen herauszufinden, ob Microservices für Ihre Zwecke geeignet sind und zeigt Ihnen, wie Sie die Fallstricke umgehen können.« Martin Fowler, Chief Scientist, ThoughtWorks
Art

Semiotic Warfare

A Semiotic Analysis, the Chinese Avant-garde, 1979-1989

Author: Martina Köppel-Yang

Publisher: Timezone 8 Limited

ISBN: 9789889726294

Category: Art

Page: 245

View: 7774

Semiotic Warfare looks at the art of the avant-garde art movement in China from the period 1979 to 1989. This book takes the perspective that the avant-garde artworks of the time were a factor in the radical political and social changes in the first decennium after the cultural revolution. The author reveals the relationship between art and the radical social changes after the revolution through an analysis of visual signs employed in works of art that were subject to controversies in that period.
Computers

Troubleshooting Docker

Author: Vaibhav Kohli,Rajdeep Dua,John Wooten

Publisher: Packt Publishing Ltd

ISBN: 178528536X

Category: Computers

Page: 290

View: 3330

Strategically design, troubleshoot, and automate Docker containers from development to deployment About This Book Utilize current and emergent technologies for effective Docker orchestration and management A step-by-step guide to diagnosing and fixing problems with Docker containers. Who This Book Is For This book is intended for seasoned solutions architects, developers, and programmers, system engineers, and administrators to help you troubleshoot common areas of Docker containerization. If you are looking to build production-ready Docker containers for automated deployment, you will be able to master and troubleshoot both the basic functions and the advanced features of Docker. Advanced familiarity with the Linux command line syntax, unit testing, the Docker Registry, Github, and leading container hosting platforms and Cloud Service Providers (CSP) are the prerequisites. What You Will Learn Install Docker ecosystem tools and services, Microservices and N-tier applications Create re-usable, portable containers with help of automation tools Network and inter-link containers Attach volumes securely to containers Consume and troubleshoot Docker APIs Troubleshooting issue of Docker deployment in Public cloud Ease the process of container management with Kubernetes In Detail This book will traverse some common best practices to for complex application scenarios where troubleshooting can be successfully employed to provide the repeatable processes and advantages that containers can deliver. This book will be a practical guide showing how to fix real-life issues related to installation, memory, Dockerfile syntax, connection, authorization, networking and so on in Docker. This book will also teach how to solve errors that occur during advanced setup and administration and deployment in a step-by-step fashion. By sequentially working through the real-world production scenarios in each chapter throughout the book, you will gain insight into and mastery of common areas not only for effective troubleshooting, but ways and means to avoid troubleshooting in the first place. This book will also cover tips and tricks that make the workflow easier. Style and approach An easy-to-follow guide full of interactive examples of real-world development and deployment scenarios. Ample screenshots, workflows, complementary tools, and related terminal commands are provided to address a wide range of practical and situational applications.
Computers

Effektives Arbeiten mit Legacy Code

Refactoring und Testen bestehender Software

Author: Michael C. Feathers

Publisher: MITP-Verlags GmbH & Co. KG

ISBN: 395845903X

Category: Computers

Page: 432

View: 5865

Knoppix Hacks

Author: Kyle Rankin

Publisher: O'Reilly Verlag DE

ISBN: 9783897214040

Category:

Page: 369

View: 6620

Linux-Administrations-Handbuch

Author: Evi Nemeth,Garth Snyder,Trent Hein

Publisher: Pearson Deutschland GmbH

ISBN: 9783827328229

Category:

Page: 1272

View: 6773

Linux-Sicherheits-Kochbuch

Author: Daniel J. Barrett,Richard E. Silverman,Robert G. Byrnes

Publisher: O'Reilly Verlag DE

ISBN: 9783897213647

Category:

Page: 343

View: 3721

Computers

Systems Performance

Enterprise and the Cloud

Author: Brendan Gregg

Publisher: Prentice Hall

ISBN: 0133390101

Category: Computers

Page: 792

View: 7086

The Complete Guide to Optimizing Systems Performance Written by the winner of the 2013 LISA Award for Outstanding Achievement in System Administration Large-scale enterprise, cloud, and virtualized computing systems have introduced serious performance challenges. Now, internationally renowned performance expert Brendan Gregg has brought together proven methodologies, tools, and metrics for analyzing and tuning even the most complex environments. Systems Performance: Enterprise and the Cloud focuses on Linux® and Unix® performance, while illuminating performance issues that are relevant to all operating systems. You’ll gain deep insight into how systems work and perform, and learn methodologies for analyzing and improving system and application performance. Gregg presents examples from bare-metal systems and virtualized cloud tenants running Linux-based Ubuntu®, Fedora®, CentOS, and the illumos-based Joyent® SmartOS™ and OmniTI OmniOS®. He systematically covers modern systems performance, including the “traditional” analysis of CPUs, memory, disks, and networks, and new areas including cloud computing and dynamic tracing. This book also helps you identify and fix the “unknown unknowns” of complex performance: bottlenecks that emerge from elements and interactions you were not aware of. The text concludes with a detailed case study, showing how a real cloud customer issue was analyzed from start to finish. Coverage includes • Modern performance analysis and tuning: terminology, concepts, models, methods, and techniques • Dynamic tracing techniques and tools, including examples of DTrace, SystemTap, and perf • Kernel internals: uncovering what the OS is doing • Using system observability tools, interfaces, and frameworks • Understanding and monitoring application performance • Optimizing CPUs: processors, cores, hardware threads, caches, interconnects, and kernel scheduling • Memory optimization: virtual memory, paging, swapping, memory architectures, busses, address spaces, and allocators • File system I/O, including caching • Storage devices/controllers, disk I/O workloads, RAID, and kernel I/O • Network-related performance issues: protocols, sockets, interfaces, and physical connections • Performance implications of OS and hardware-based virtualization, and new issues encountered with cloud computing • Benchmarking: getting accurate results and avoiding common mistakes This guide is indispensable for anyone who operates enterprise or cloud environments: system, network, database, and web admins; developers; and other professionals. For students and others new to optimization, it also provides exercises reflecting Gregg’s extensive instructional experience.
Operating systems (Computers)

Das offizielle Ubuntu-Buch

Author: Benjamin Mako Hill

Publisher: Pearson Deutschland GmbH

ISBN: 3827324300

Category: Operating systems (Computers)

Page: 384

View: 5293

Computers

Puppet Cookbook - Third Edition

Author: Thomas Uphill,John Arundel

Publisher: Packt Publishing Ltd

ISBN: 1784393738

Category: Computers

Page: 336

View: 6743

This book is for anyone who builds and administers servers, especially in a web operations context. It requires some experience of Linux systems administration, including familiarity with the command line, file system, and text editing. No programming experience is required.
Self-Help

Wie ich die Dinge geregelt kriege

Selbstmanagement für den Alltag

Author: David Allen

Publisher: Piper ebooks

ISBN: 3492972314

Category: Self-Help

Page: 432

View: 6044

Eigentlich sollte man längst bei einem Termin sein, doch dann klingelt das Handy und das E-Mail-Postfach quillt auch schon wieder über. Für Sport und Erholung bleibt immer weniger Zeit und am Ende resigniert man ausgebrannt, unproduktiv und völlig gestresst. Doch das muss nicht sein. Denn je entspannter wir sind, desto kreativer und produktiver werden wir. Mit David Allens einfacher und anwendungsorientierter Methode wird beides wieder möglich: effizient zu arbeiten und die Freude am Leben zurückzugewinnen.