openstack cookbook

1. Traversing a stringThere is no iterative operation in SQL, so you can implement this process by connecting a table that is used as a traversal pointer.1 Selectsubstr (E.ename, Iter.pos,1) asC2 from(SelectEname fromEmpwhereEname= 'KING') E,3(SelectId asPos fromT10) ITER4 whereIter.posLength (e.ename);There are 10 data in T10, ID from 1-10.The FROM clause provides a Cartesian product, and the resulting table resemblesThe WHERE clause restricts the POS range. SQL

number.) ）After that, Dashboard's page found that it was deleted.Restart Nova-compute, create the virtual machine again, and the status is active.Problem thinking Direction: The operation of virtual machine (create, delete, etc.) must be related to Nova-compute.----------------------------------------------------------------------------------------------------March 25, 2014 update after following the above actions, and found that although the instance has been deleted, such as: If you want to m

application development platform Lab Test Platform Use cases that use scale-out effects that are better than vertical scaling are the ideal object for general-purpose cloud architectures.A general-purpose cloud environment is potentially useful and functional, rather than customized for a given user. The general purpose architecture is designed to meet 80% of potentially available cases. The infrastructure itself is a designated case, intended as a basic model of the design process. Th

this information in recipe now: Data_bag and Data_bag_item Data_bag Admin user has Quqi.json this data file that Data_bag (' admin ') equals ["Quqi"] Data_bag_item Concept: Attribute Property (Attributes) is the node (Node) information , such as IP address, hostname, loaded kernel module, the version of the programming language available in the system, and more. New properties can be added to the node in many ways. There are four types of properties, arranged in order of precedence from high

Through this article, you will be able to understand how to configure the hybrid hypervisor in openstack and the basic analysis of its implementation principles. This article analyzes the principles of the hybrid hypervisor scenario in openstack based on the actual development experience of the author in Nova, and introduces how to configure the hybrid hypervisor scenario in actual application scenarios. Ge

OpenStack is a free software and open source project, developed and launched by NASA and Rackspace, in collaboration with the Apache license. OpenStack is an open source cloud computing management Platform project, composed of several major components to accomplish specific tasks. OpenStack supports almost all types of cloud environments, and the project aims to

OpenStack Installation Deployment Tutorial OpenStack is a free software and open source project, developed and launched by NASA and Rackspace, in collaboration with the Apache license. At the same time, OpenStack is an open-source cloud computing management platform that supports almost all types of cloud environments with the goal of delivering simple, scalable

OpenStack Service command set for restart Recent company projects need to use OpenStack because OpenStack Restart Service command more, so on the Internet to find the next data, sorted down, hope to help readers! Restart OpenStack's entire service Openstack-service restart 1. Restart Dashboard Service httpd Restar

Introduction to OpenStack Architecture analysis written in frontLearning Goals: Understand the logical relationships of OpenStack components; Understand the communication and deployment relationships of the various components of OpenStack; Understand the work flow of OpenStack; Next I will master:

Objective OpenStack is an open source IaaS (infrastructure and services) cloud computing platform that allows anyone to build and deliver cloud computing services on their own. OpenStack consists of a series of interrelated projects that provide various components of cloud infrastructure solutions, core projects (9): 1, calculation (Compute)-Nova; 2, Network and address management-neutron; 3, Object St

Tell you a real OpenStack: Who's using it, what's it for?The open-source cloud computing software OpenStack is entering the mainstream enterprise market, but the project is still facing an old problem that is difficult to deploy and manage, according to a two-year survey published by the OpenStack Foundation recently.There is no doubt that

For OpenStack beginners, installation is often a big headache for getting started. Before the E version, to build a basic can use OpenStack environment that is quite troublesome, their own to install, their own source, according to the document to knock orders, and no reliable documents, the official document still have a lot of holes, and language problems are often used for a few days can not be loaded up

Identity Services Overview The OpenStack Authentication Management Service provides a single point of integration authentication, authorization, and service directory service. Other OpenStack services use authentication services as a common, unified API. In addition, services provide user information, but not included in OpenStack (such as LDAP services) can be

All along, for OpenStack beginners, installation is often the first big problem of getting started. Before the E version, to build a basic OpenStack environment that is quite troublesome, they have to install, their own source, according to the document to knock orders, and there is no reliable documents, the official documents still have a lot of pits, and language problems often with a few days of time ca

Records for easy access. Just part of the explanation.Install and configure the Controller nodeKeystone User-create--name Swift--Pass Swiftkeystone User-role-add--user Swift--tenant Service--Role Adminkeystone Service-create--name Swift--typeObject-store--description"OpenStack Object Storage"Keystone Endpoint-Create--service-ID$ (Keystone Service-list |awk '/Object-store/{print -$}') --publicurl'http://controller:8080/v1/AUTH_% (tenant_id) s' --

The development of openstack is fierce, and many friends agree that in 2013, the openstack deployment problem will be well solved, making the installation and configuration easier to use. Many companies have invested effort in doing this. Sina also plans to make an ISO for openstack and integrate OS. When you decide to do this, first understand the current situat

The Oepnstack Ceph series is a collection of notes based on Ceph Cookbook, divided into the following sections:1. "Ceph profile"2. "Ceph cluster Operations"3. "Ceph block Device Management and OpenStack configuration"4. "In-depth ceph"5. Ceph Optimization and performance testingStarting and blog.bobozhu.cn.Ceph Concept1, Ceph English is Pet octopus nickname (cephalopod), a software-defined storage (SDS) Imp

Openstack Network Knowledge Data Summary: Openstack concept I just heard that I was going to do OpenStack development, it was quite exciting. I don't know what OpenStack is, but I know it has something to do with cloud computing. Cloud computing This thing, listen to the tall, the major Internet companies have cast i

Turn from: http://www.ibm.com/developerworks/cn/cloud/library/cl-contributecode-openstack/ Contribute your code to the OpenStack Sheng Bo Hou, software engineer, IBM Introduction: As OpenStack (open source cloud software) is supported, more and more individuals and businesses want to contribute to the OpenStack commu

coordination between the guest operating system and bare hardware, and some protected instructions must be captured by hypervisor (hypervisor). Full virtualization runs faster than hardware simulations, but is less performance than bare metal. Semi-virtualized (Para virtualization)Para-virtualization is another technology similar to full virtualization, which uses hypervisor to share access to the underlying hardware, but its guest operating system integrates virtualization-related code. Th