Get unstuck and start stacking! About This Book Easily fix the nagging problems that commonly plague OpenStack and become the go-to person in your organization Get better equipped to troubleshoot and solve common problems in performance, availability, and automation that confront production-ready OpenStack environments Save time and decrease frustration by solving significant issues that arise from OpenStack deployments pertaining to storage and networking Who This Book Is For You will need a basic understanding of OpenStack, Linux, and Cloud computing. If you have an understanding of Linux, this book will help you leverage that knowledge in the world of OpenStack, giving you confidence to tackle most issues that may arise. What You Will Learn Diagnose and remediate authentication and authorization problems in Keystone Fix common issues with images served through Glance Master the art of troubleshooting Neutron networking Navigate and overcome problems with Nova Troubleshoot and resolve Cinder block storage issues Identify and correct Swift object storage problems Isolate and fix issues caused by Heat orchestration Leverage Ceilometer and other metering and monitoring tools for effective troubleshooting In Detail OpenStack is a collection of software projects that work together to provide a cloud fabric. OpenStack is one of the fastest growing open source projects in history that unlocks cloud computing for everyone. With OpenStack, you are able to create public or private clouds on your own hardware. The flexibility and control afforded by OpenStack puts the cloud within reach of anyone willing to learn this technology. Starting with an introduction to OpenStack troubleshooting tools, we’ll walk through each OpenStack service and how you can quickly diagnose, troubleshoot, and correct problems in your OpenStack. Understanding the various projects and how they interact is essential for anyone attempting to troubleshoot an OpenStack cloud. We will start by explaining each of the major components and the dependencies between them, and move on to show you how to identify and utilize an effective set of OpenStack troubleshooting tools and fix common Keystone problems. Next, we will expose you to common errors and problems you may encounter when using the OpenStack Block Storage service (Cinder). We will then examine Heat, the OpenStack Orchestration Service, where you will learn how to trace errors, determine their root cause, and effectively correct the issue. Finally, you will get to know the best practices to architect your OpenStack cloud in order to achieve optimal performance, availability, and reliability. Style and approach This is straight-to-the point guide to fixing your OpenStack cluster. Common problems are identified and suggestions to resolve these problems are presented in a simple, easy-to-understand manner.

Master Puppet for configuration management of your systems in an enterprise deploymentAbout This BookThis book is an advanced guide to using and deploying Puppet 4 in your organization with a special focus on issues faced in larger enterprise deploymentsFrom an experienced author, learn to deal with scaling, performance, and multiple developers with the help of real-world examplesThis is the most up-to-date guide on Puppet, and covers the advanced concepts of Puppet 4Who This Book Is ForThis book is for those who have intermediate knowledge of Puppet and are looking to deploy it in their environment. Some idea how to write simple modules for configuration management with Puppet is a prerequisite for this book.What You Will LearnScale out your Puppet infrastructure using proxying techniquesAutomate your code promotion workflow using Git and r10kSolve real-world problems using public modules from the Puppet ForgeUse Hiera to separate the data of your configuration from the code of your configurationWrite your own custom facts in RubyExtend Puppet with your own custom facts, modules, and typesUse exported resources to orchestrate change between machinesDebug a puppetserver using Java techniquesIn DetailPuppet is a configuration management system and a language. It was written for and by system administrators to manage large numbers of systems efficiently and prevent configuration drifts.Mastering Puppet deals with the issues faced when scaling out Puppet to handle large numbers of nodes. It will show you how to fit Puppet into your enterprise and allow many developers to work on your Puppet code simultaneously. In addition, you will learn to write custom facts and roll your own modules to solve problems. Next, popular options for performing reporting and orchestration tasks will be introduced in this book. Moving over to troubleshooting techniques, which will be very useful. The concepts presented are useful to any size organization.By the end of the book, you will know how to deal with problems of scale and exceptions in your code, automate workflows, and support multiple developers working simultaneously.Style and approachThis book is a step-wise guide packed with examples to help you configure complex systems in Puppet.

Write efficient, clean, and reusable code with ScalaAbout This BookUnleash the power of Scala and apply it in the real worldIncrease your efficiency by leveraging the power of Creational, Structural, Behavioural, and Functional design patternsBuild object oriented and functional applications quickly and effectivelyWho This Book Is ForIf you want to increase your understanding of Scala and apply it to real-life application development, then this book is for you. We’ve also designed the book to be used as a quick reference guide while creating applications. Previous Scala programming knowledge is expected.What You Will LearnImmerse yourself in industry-standard design patterns—structural, creational, and behavioral—to create extraordinary applicationsFeel the power of traits and their application in ScalaImplement abstract and self types and build clean design patternsBuild complex entity relationships using structural design patternsCreate applications faster by applying functional design patternsIn DetailScala has become increasingly popular in many different IT sectors. The language is exceptionally feature-rich which helps developers write less code and get faster results. Design patterns make developer’s lives easier by helping them write great software that is easy to maintain, runs efficiently and is valuable to the company or people concerned.You will learn about the various features of Scala and be able to apply well-known, industry-proven design patterns in your work. The book starts off by focusing on some of the most interesting features of Scala while using practical real-world examples. We will also cover the popular "Gang of Four" design patterns and show you how to incorporate functional patterns effectively. By the end of this book, you will have enough knowledge and understanding to quickly assess problems and come up with elegant solutions.Style and approachThe design patterns in the book will be explained using real-world, step-by-step examples. For each design pattern, there will be hints about when to use it and when to look for something more suitable. This book can also be used as a practical guide, showing you how to leverage design patterns effectively.

Learn to design and 3D print organic and functional designs using BlenderAbout This BookLearn how to make complex shapes by editing basic onesMake printable objects from multiple shapes and partsLearn how to design from scratch, without a reference to physical objectsWho This Book Is ForYou should have basic knowledge of Blender and 3D printing and be interested in printing your first object.What You Will LearnGet to know the guiding principles required to create 3D printer-friendly modelsUnderstand material characteristics, printing specifications, tolerances, and design tipsMaster the art of modifying basic shapes with Blender's powerful editing tools: extrude, loop cuts, and other transformationsLearn techniques of editing complex meshes, smoothing, combining shapes, and exporting them into STL files for printingIn DetailThis book will cover the very basic but essential techniques you need to model an organic and functional object for 3D printing using Blender.Starting with pen and paper and then moving on to the computer, you will create your first project in Blender, add basic geometric shapes, and use techniques such as extruding and subdividing to transform these shapes into complex meshes. You will learn how modifiers can automatically refine the shape further and combine multiple shapes into a single 3D printable model.By the end of the book, you will have gained enough practical hands-on experience to be able to create a 3D printable object of your choice, which in this case is a 3D print-ready octopus pencil holder.Style and approachThis is a starter project designed to introduce you to your first real-world 3D printing designs, where you'll learn how to handle the fundamental principles of 3D printing design and have your hands on your reward in no time.

Over 80 recipes on how to identify, exploit, and test web application security with Kali Linux 2About This BookFamiliarize yourself with the most common web vulnerabilities a web application faces, and understand how attackers take advantage of themSet up a penetration testing lab to conduct a preliminary assessment of attack surfaces and run exploitsLearn how to prevent vulnerabilities in web applications before an attacker can make the most of itWho This Book Is ForThis book is for IT professionals, web developers, security enthusiasts, and security professionals who want an accessible reference on how to find, exploit, and prevent security vulnerabilities in web applications. You should know the basics of operating a Linux environment and have some exposure to security technologies and tools.What You Will LearnSet up a penetration testing laboratory in a secure wayFind out what information is useful to gather when performing penetration tests and where to look for itUse crawlers and spiders to investigate an entire website in minutesDiscover security vulnerabilities in web applications in the web browser and using command-line toolsImprove your testing efficiency with the use of automated vulnerability scannersExploit vulnerabilities that require a complex setup, run custom-made exploits, and prepare for extraordinary scenariosSet up Man in the Middle attacks and use them to identify and exploit security flaws within the communication between users and the web serverCreate a malicious site that will find and exploit vulnerabilities in the user's web browserRepair the most common web vulnerabilities and understand how to prevent them becoming a threat to a site's securityIn DetailWeb applications are a huge point of attack for malicious hackers and a critical area for security professionals and penetration testers to lock down and secure. Kali Linux is a Linux-based penetration testing platform and operating system that provides a huge array of testing tools, many of which can be used specifically to execute web penetration testing.This book will teach you, in the form step-by-step recipes, how to detect a wide array of vulnerabilities, exploit them to analyze their consequences, and ultimately buffer attackable surfaces so applications are more secure, for you and your users.Starting from the setup of a testing laboratory, this book will give you the skills you need to cover every stage of a penetration test: from gathering information about the system and the application to identifying vulnerabilities through manual testing and the use of vulnerability scanners to both basic and advanced exploitation techniques that may lead to a full system compromise. Finally, we will put this into the context of OWASP and the top 10 web application vulnerabilities you are most likely to encounter, equipping you with the ability to combat them effectively. By the end of the book, you will have the required skills to identify, exploit, and prevent web application vulnerabilities.Style and approachTaking a recipe-based approach to web security, this book has been designed to cover each stage of a penetration test, with de*ions on how tools work and why certain programming or configuration practices can become security vulnerabilities that may put a whole system, or network, at risk. Each topic is presented as a sequence of tasks and contains a proper explanation of why each task is performed and what it accomplishes.

blowback blo-bak n: the unintended results of covert intelligence operations that come back to haunt you.When the Unthinkable Happens— On India's border a weapon of mass destruction has begun a terrifying countdown toward Armageddon.A Conspiracy Unfolds— In Washington, D.C., Richard Whelan, National Security Advisor to the President and one of the most powerful men in the administration, has just been framed for the murder of his ex-girlfriend, the daughter of a prominent defense contractor who happens to be a staunch supporter of the President ...The One Man Who Can Find the Answers— As powerful enemies align to keep him from the truth, Richard Whelan—alone, a fugitive from justice—finds himself in a race against time as the world heads to the brink of nuclear confrontation.

Know Scumbler in his poignant, hilarious life. Get mad at him and even cry with him. Here's Don Quixote, Santa Claus, and Faust rolled into one "thick shadow" of a man. A joyous sixty-year-old American street painter lives on the Left Bank in Paris, making a living by creating rentable apartments out of the most unlikely spaces. Mostly, however, he paints with utter delight in the creative act and discovers remarkable characters along his path: crafts-men, students, prostitutes, motorcyclists. He scumbles and fails. He digs twisting tunnels under Paris streets and builds nests: nature nests, rats' nests, birds' nests. He collects clocks and designs his own life from the "inside." Wanting to be true beyond honesty, visible past seeing to being, Scumbler scrambles, tumbles, rumbles, rambles through the ecstatic pleasure of creation and the pangs of ordinary existence.

The hip and heart–warming story of what it means to be a girl and what it takes to become a woman.When Lilly's best friend, Maya, gets engaged, the tenuous peace treaty Lilly thought she had finally established with her perennially single self shows itself to be as long–lasting as shoulder pads and frozen yoghurt. Wavering wildly between ecstasy and envy, serial dater and retail–therapy shopper, Lilly vows to get her life together.While sipping lattes from the Coffee Bean and planning forever with Maya, Lilly embarks on an uproariously comical and strikingly poignant ride of transformation, told through a series of delightfully engaging interior monologues. Travelling the byways of her own past, Lilly learns to be optimistic about her future and relish her new–found 'chic–dom'. In a voice that grows stronger, louder and more articulate than she ever imagined, Lilly ultimately comes to embrace her on–the–verge–of–womanhood status in all its uncertain yet exciting glory.Depicting the comic adventures of being a grown–up still coming of age, Rebecca Bloom evocatively and enthusiastically reveals tender truths about friendship and true love.

In this sequel to A Thousand Pieces of You by New York Times bestselling author Claudia Gray, Marguerite races through various dimensions to save the boy she loves.Ever since she used the Firebird, her parents' invention, to cross through to alternate dimensions, Marguerite has caught the attention of enemies who will do anything to force her into helping them dominate the multiverse—even hurt the people she loves. She resists until her boyfriend, Paul, is attacked, and his consciousness is scattered across multiple dimensions.The hunt for each splinter of Paul's soul sends Marguerite racing through a war-torn San Francisco, the criminal underworld of New York City, and a glittering Paris where another Marguerite hides a shocking secret. Each dimension brings Marguerite one step closer to rescuing Paul. But with every trial she faces, she begins to question the one constant she's found between the worlds: their love for each other.

Do men and monogamy mixIt's not a question Mitchell "Little Bit" Crawford gave much thought to until his beaufriend of almost two years, Raheim "Pooquie" Rivers, an All-American jeans model, heads to Hollywood to make his first feature film. As Mitchell soon discovers, the temptation to cheat is very real . . . and it seems to be everywhere. An ex even pops up hoping to pick up where they left -- and got -- off. While intrigued, Mitchell chalks all the attention up to "the married man" syndrome: one is much more desirable when he's attached to someone else.But as he continues to run into bisexual musician Montgomery "Montee" Simms, the look-but-don't-touch rule is put to the test. As he and Montee get closer, Mitchell's idealistic beliefs about commitment are challenged. Will he love the one he's with because he can't be with the one he loves?

Robin Constantine's New Jersey romance The Promise of Amazing is a sexy, poignant, funny, and authentic debut novel that will appeal to fans of books by Stephanie Perkins, Sarah Mlynowski, and Jennifer E. Smith.Wren Caswell is average. Ranked in the middle of her class at Sacred Heart, she's not popular, not a social misfit. Wren is the quiet good girl who's always done what she's supposed to—only now, in her junior year, this passive strategy is backfiring. She wants to change but doesn't know how.Grayson Barrett was the king of St. Gabe's: star of the lacrosse team, top of his class, and on the fast track to a brilliant future—until he was expelled for being a "term-paper pimp." Now Gray is in a downward spiral and needs to change but doesn't know how.One fateful night, their paths cross at Wren's family's Arthurian-themed catering hall. What follows is the complicated, awkward, hilarious, and tender tale of two teens shedding their pasts, figuring out who they are—and falling in love.

A gripping tale of survival and an epic love story in which a husband and wife–separated by the only battle of World War II to take place on American soil–fight to reunite in Alaska's starkly beautiful Aleutian IslandsFollowing the death of his younger brother in Europe, journalist John Easley is determined to find meaning in his loss, to document some part of the growing war that claimed his own flesh and blood. Leaving behind his beloved wife, Helen, after an argument they both regret, he heads north from Seattle to investigate the Japanese invasion of Alaska's Aleutian Islands, a story censored by the U.S. government.While John is accompanying a crew on a bombing run, his plane is shot down over the island of Attu. He survives only to find himself exposed to a harsh and unforgiving wilderness, known as "the Birthplace of Winds." There, John must battle the elements, starvation, and his own remorse while evading discovery by the Japanese.Alone in their home three thousand miles to the south, Helen struggles with the burden of her husband's disappearance. Caught in extraordinary circumstances, in this new world of the missing, she is forced to reimagine who she is–and what she is capable of doing. Somehow, she must find John and bring him home, a quest that takes her into the farthest reaches of the war, beyond the safety of everything she knows.A powerful, richly atmospheric story of life and death, commitment and sacrifice, The Wind Is Not a River illuminates the fragility of life and the fierce power of love.

A Brave Man Seven Storeys Tall?is an exuberant literary debut--a novel of real ideas and a playful examination of our in-between world, one that explores the nature of family, identity, art, and belief while also marking the introduction of an original new voice in contemporary fiction.Owen Burr is the six-foot-eight, Olympics-bound senior captain of the Stanford University water polo team. In his final collegiate match, however, he suffers a catastrophic injury that destroys his hopes and dreams, flattening his entire world into two dimensions. His identity as an athlete erased but his ambition indelible, he defies his father, a classics professor who lives in a "cave" of his own making, and moves to Berlin with naive plans to make conceptual art. Then he disappears.Without a single clue as to his son's location, Dr. Burr embarks upon a tour of public lectures from Greece to Germany to Iceland in an attempt to draw out his endangered son. Instead, he foments a violent uprising.

In this New York Times bestselling sequel to Dorothy Must Die, who is good—and who is actually WickedThe Wicked Will Rise is perfect for fans of richly reimagined fairy tales and classic tales like Marissa Meyer’s Lunar Chronicles and Gregory Maguire’s Wicked.My name is Amy Gumm—and I’m the other girl from Kansas. After a tornado swept through my trailer park, I ended up in Oz. But it wasn’t like the Oz I knew from books and movies. Dorothy had returned, but she was now a ruthless dictator. Glinda could no longer be called the Good Witch. And the Wicked Witches who were leftThey’d joined forces as the Revolutionary Order of the Wicked, and they wanted to recruit me.My missionKill Dorothy. Except my job as assassin didn’t work out as planned. Dorothy is still alive. The Order has vanished. And the home I couldn’t wait to leave behind might be in danger.Somehow, across a twisted and divided land, I have to find the Order, protect the true ruler of Oz, take Dorothy and her henchmen down—and try to figure out what I’m really doing here.

Pretty Little Liars meets Beautiful Creatures in this steamy southern suspense novel about a group of powerful teen voodoo queens who will do anything to get what they want.Eveny Cheval has just moved back to Carrefour, Louisiana—a town she left fourteen years ago in the wake of her mother's suicide. An outsider at first, Eveny quickly finds herself embroiled in a web of intrigue, betrayal, and lies. Enter Peregrine Marceau, Chloe St. Pierre, and their group of rich, sexy friends collectively known as the Dolls. They want to bring Eveny into their circle and share their darkest truths with her.Eveny is wary of these girls, but after murder strikes and she discovers that everything she believes about herself, her family, and her life is a lie, she's forced to turn to the Dolls for answers. Something's wrong in paradise, and it's up to Eveny, Chloe, and Peregrine to save Carrefour and make it right.

Damaged HousesA master craftsman, Don Lark could fix everything except what mattered, his own soul. After tragedy claimed the one thing he loved, he began looking for dilapidated houses to buy, renovate, and resell at a profit--giving these empty shells the second chance at life he denied himself.Damaged SoulsThen in a quiet Southern town, Lark finds his biggest challenge: a squalid yet sturdy mansion that has suffered decades of abuse at the hands of greedy landlords and transient tenants. While two charming old neighbor ladies ply him with delicious cooking, they offer dire warnings about the house's evil past. But there is something about this building that pushes Lark on, even as its enchantments grow increasingly ominous. Will finishing the house offer Lark redemption, or unleash the darkest forces of damnation upon him?

An edge-of-your-seat original prequel based on Showtime's hit series HomelandBeirut, 2006. CIA operations officer Carrie Mathison barely escapes an ambush while attempting a clandestine meeting with a new contact, code-name Nightingale. Suspicious that security has been compromised, she challenges the station chief in a heated confrontation that gets her booted back to Langley.Expert in recognizing and anticipating behavioral patterns—a skill enhanced by her bipolar disorder she keeps secret to protect her career—Carrie is increasingly certain that a terrorist plot has been set in motion. She risks a shocking act of insubordination that helps her uncover secret evidence connecting Nightingale with Abu Nazir, the leader of Al Qaeda in Iraq. Determined to stop the terrorist mastermind, she embarks on an obsessive quest that will nearly destroy her.Filled with the suspense and plot twists that have made Homeland a must-watch series, this riveting tale reveals the compelling untold backstories of the series' main characters and takes fans deeper into the life and mind of one brilliant female spy.

If you could live forever, what would you die for?Five hundred years ago, a group of Spanish conquistadors searching for gold, led by a young and brilliant commander named Simón de Oliveras y Seixas, land in the New World. What they find in the sunny and humid swamps of this uncharted land is a treasure far more valuable: the Fountain of Youth. The Spaniards slaughter the Water Clan of the Uzita, the Native American tribe that guards the precious liquid that will keep the conquistadors young for centuries. But one of them escapes: Shako, the chief's fierce and beautiful daughter, who swears to avenge her people—a blood oath that spans more than five centuries.When the source of the fountain is destroyed in our own time, the loss threatens Simon and his men, and the powerful, shadowy empire of wealth and influence they have built. For help, they turn to David Robinton, a scientific prodigy who believes he is on the verge of the greatest medical breakthrough of all time. But as the centuries-old war between Shako and Simon reaches its final stages, David makes a horrifying discovery about his employers and the mysterious and exotic woman he loves. Now the scientist must decide: Is he a pawn in a game of immortals . . . or will he be its only winner?

Acclaimed New York Times bestselling author Richard Kadrey creates a wonderful, stand-alone dark fantasyAfter her father's funeral, Zoe moved to the big city with her mother to start over. But change always brings trials, and life in the city is not so easy. Money is tight, and Zoe's only escape, as has always been the case, is in her dreams—a world apart from her troubled real life where she can spend time with her closest companion: her lost brother, Valentine.But something or someone has entered their dreamworld uninvited. And a chance encounter at a used record store, where the vinyl holds not music but lost souls, has opened up a portal to the world of the restless dead. It's here that the shop's strange proprietor offers Zoe the chance to commune with her dead father. The priceA lock of hair. Then a tooth. Then . . .

From the New York Times bestselling author of The Manny—a vibrant novel of love, life lessons, and learning to trust yourselfAllie Crawford has the life she always dreamed of—she's number two at a high-profile P.R. firm; she has two kids she adores; and her husband is a blend of handsome and heroic. Wade is everything she thought a man was supposed to be—he's running a successful newsmagazine and, best of all, he provides the stable yet exciting New York City life Allie believes she needs in order to feel secure and happy.But when Allie finds Wade locked in their laundry room with a stunning blonde in snakeskin sandals, a scandal ensues that flips her life on its head. And when the woman wants to befriend Allie, an old flame calls, and a new guy gets a little too close for comfort, she starts to think her marriage is more of a facade than something real. Maybe she's fallen in love not with Wade—but with the idea of him.Captivating and seductive, told in the whip-smart voice of a woman who is working hard to keep her parenting and career on track, The Idea of Him is a novel of conspiracy, intrigue, and intense passion—and discovering your greatest strength through your deepest fears.

New York Times and USA Today Bestseller!In the tradition of Kristin Hannah and Susan Wiggs, Mary McNear introduces readers to the town of Butternut Lake and to the unforgettable people who call it home.It's summer, and after ten years away, Allie Beckett has returned to her family's cabin beside tranquil Butternut Lake, where as a teenager she spent so many carefree days. She's promised her five-year-old son, Wyatt, they will be happy there. She's promised herself this is the place to begin again after her husband's death in Afghanistan. The cabin holds so many wonderful memories, but from the moment she crosses its threshold Allie is seized with doubts. Has she done the right thing uprooting her little boy from the only home he's ever known?Allie and her son are embraced by the townsfolk, and her reunions with old acquaintances—her friend Jax, now a young mother of three with one more on the way, and Caroline, the owner of the local coffee shop—are joyous ones. And then there are newcomers like Walker Ford, who mostly keeps to himself—until he takes a shine to Wyatt . . . and to Allie.Everyone knows that moving forward is never easy, and as the long, lazy days of summer take hold, Allie must learn to unlock the hidden longings of her heart, and to accept that in order to face the future she must also confront—and understand—what has come before.