How high is the risk of fixing a bug? Maybe, you will say, it depends on where the bug happened. Indeed, style issues in the UI Layer, errors in the background logical call layer, exceptions in the data access layer, changes to database-level functions or stored procedures ...... The impact of a bug may be minimal. Of course, it may also have a wide range of impacts, or even affectProgramArchitecture!
Despite the extreme situations, what we want to talk about today is the most frequently encou
Linux is still quite common, So I studied the Linux system and shared it with you here. I hope it will be useful to you. When the Linux system crashes, what people see is not the classic "blue screen" Phenomenon of Microsoft Windows operating system. Instead, it shows that the system crash report signature is called "oops ", this is a surprising exclamation point, which is equivalent to "Oh") to help developers identify the cause of system errors.
Some people may think this is silly, but the fea
From the title, you may feel dizzy. The non-recurrence mentioned here means that these bugs sometimes occur and sometimes do not. I believe that you must have encountered this kind of bug during the testing process. Many of these unreproducible bugs are difficult to locate and may not be solved for a long time. Whether or not these reproducible bugs can be reprod
Browser-compatible tour of the third stop: IE common bugs
reproduced from: Http://www.w3cplus.com/css/ten-most-common-ie-bugs-and-how-to-fix-them-part-1
Internet explorer--Front-End Siege division of the nightmare, 10 have nine front-end personnel think he for the world is not shallow, should have destroyed him earlier, but God has the virtuous, so did not destroy, in this case, the front of the attac
Browser-compatible tour of the third stop: IE common bugs
reprinted from: Http://www.w3cplus.com/css/ten-most-common-ie-bugs-and-how-to-fix-them-part-1
Internet explorer--Front-end siege division of the nightmare, 10 have nine front-end people think he is not shallow, should have killed him early, but God has the virtue, so there is no extinguish, in this case, the front-end of the master will do it.
Learn about OpenStack's series of articles-Nova
Nova Basic Concepts
Nova Architecture
OpenStack Log
Nova Components Introduction
Nova Operations Introduction
1. Nova Basic ConceptsNova is the core service of OpenStack, responsible for managing and maintaining computing resources in the cloud, and the lifecycle management of virtual machines is achieved through Nova.2. Nova Arch
There are many comments on installing and configuring openstack Nova on Ubuntu. At least six netizens may encounter Ping failure. To be honest, there are many reasons for ping failure (the most common one isEuca-authorize authorization problem). If no useful information is provided, it is difficult to judge the problem by leaving a "Ping failure". We suggest you try to clarify your situation when leaving a message in the future, provide as much inform
1 Introduction 1.1 About MirantisMirantis, a very cool OpenStack service integrator, is the only company in the top 5 community contributors to a meal by software and services (others are red Hat, HP, IBM, Rackspace). In contrast to several other community distributions, the fuel version is fast paced, providing a relatively stable community version on average every two months.What is 1.2 Fuel?Fuel is a tool designed for
Increase networking-Pre-preparation (Controller)Networking, also known as neutron, is an essential component of OpenStack, which is actually a network virtualization implementation tool that allows us to simulate routers, switches, network cards and other networking devices.The neutron supports two network modes, the first of which is a very simple network architecture that supports only the external network of instances, and does not support custom n
Before the Spring festival in the latest version of the OpenStack Liberty Network, a better introduction to the Liberty Network implementation and some new technology articles. After careful study decided to write the experience after the study.This series of articles is divided into 7 sections, each of which describes:1.Liberty Network Overview2. Network Architecture3.Neutron Configuration4. Network creation5. Add routes, networks, and subnets6. Star
OpenStack, the installation of the threshold is relatively high, and quite troublesome, many of the installation document author saved a lot of installation steps. This brings a lot of trouble to beginners, perhaps the author easy to save a step, will create a subsequent installation failure. and beginners because of the openstack is not very understanding, errors can not be checked, so many people are half
Reference is the official document, because some documents and steps are not listed in the official document, has been made up. It's not a problem after testing. Forget about it.
You are need at Leastthree machines, virtual or physical, with Fedora installed.
Introduction
The Controllernode would provide:
Databases (with MySQL)
Queues (with Qpid)
Keystone
Glance
Nova (without Nova-compute)
Cinder
Quantum Server (with Open-vswitch plugin)
Dashboard (with Horizon)
Common Services
Op
Installation Configuration Cinder ServiceController nodeFirst, create a database[Email protected] ~]# mysql-u root-p>>create DATABASE cinder;>>grant all privileges on cinder.* to ' cinder ' @ ' localhost ' identified by ' Cinder_dbpass ', >>grant all privileges on cinder.* to ' CINDER ' @ '% ' identified by ' CI Nder_dbpass ';Cinder_dbpass Replace the password you want to setIi. Creating service entities and API interfaces[[emailprotected]~]#source/root/admin-openrc.sh[[emailprotected]~]# openst
RedHat, the world's leading open-source solution provider, recently announced the release of the 5.0 test version of the Red Hat Enterprise LinuxOpenStack platform. This product combines the strength of the Red Hat Enterprise Linux and Red Hat OpenStack technologies, it aims to provide a scalable and secure foundation for building an open private or public cloud. The combination of these two powerful technologies can help users in the early deployment
The author for OpenStack Beginners, this article for their own learning notes, deficiencies are welcome to point out and discuss.
Target Audience: OpenStack Beginners
The article first gives the definition, and then illustrates the relationship between the three
There are three main concepts of user identity Management: User users ' tenant tenants roles roles
1. Define
These three concepts of the
Label: Disclaimer: The recent installation of the kilo version of OpenStack found that there were very few existing web tutorials and that most of the tutorials did not install successfully, So write this tutorial. The installation of OpenStack is complex, and this tutorial does not guarantee that it will be installed successfully in different environments. Personal installation tutorials are also prone
Question
The more you understand your opponent, the bug, the better your test will be, and the more reliable the software quality will be.
Although it is difficult to apply the experience data of other organizations to your organization, and even some data is opposite to intuition, you need to take actions and evaluate your situation using some methods, to improve.
Uneven bug Distribution
Without analysis, the natural idea is that the distribution of
C-collecting BugsTime limit:10000MS Memory Limit:64000KB 64bit IO Format:%i64d %i6 4u SubmitStatusDescriptionIvan is fond of collecting. Unlike other people who collect post stamps, coins or other material stuff, he collects software bugs. When Ivan gets a new program, he classifies all possible bugs into n categories. Each day he discovers exactly one bug in the program and adds information about it and
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