It is a pity that there are too few materials to study openstack + xen during this time. I decided to check the source code.
If you have read an article about the process of starting a virtual machine in openstack, you must know that there is a process called spawn instance.
The code I am using is the version of Nova-2012.2.
Next let's take a look at the file Nova/virt/libvirt/connection. py.
"""A connection to a hypervisor through libvirt.Supports KVM, LXC
background and output the container ID.-- DNS = [] custom DNS Server-- DNS-search custom DNS search domain-E, -- Env = [] Set Environment Variables-- Env-file = [] reading environment variables from a file-- Entrypoint = ""Overwrite the default image entry point -- Expose = []Expose a port of the container instead of making it public through the host -H, -- hostname = "" container Host Name-I, -- Interactive = false keep the standard input open even if there is no association-- Link connection
OpenVZ Quick Start Guide for open-source Linux containers
Introduction to Linux containers and OpenVZ
OpenVZ Installation
Install the kernel Image
Configure sysctl and install related tools
Restart OpenVZ Kernel
Easy to use
Download a pre-prepared template, also known as an image
Create and configure container Information
Start running and use
Introduction to Linux containers and OpenVZ
Linux Container (LXC) is a l
Post Pass value (invisible Pass value) Get Pass value (visible pass value)Session-Global variable groupStorage location: Service sideFunction: As long as there is content, then all the C # side of this site can access to this variable--object typeFormat:Web1 Background code: Public Partial class_default:system.web.ui.page{protected voidPage_Load (Objectsender, EventArgs e) {Button1.Click+=button1_click; } //button click event voidButton1_Click (Objectsender, EventArgs e) { strings =
What is DockerDocker is a open platform for developing,shipping, and running applications.Docker is the PAAs provider DotCloud Open source based LXC, the source code hosted on GitHub, based on the Go language development, following the APPACHE2.0 protocol of the container engine. Docker allows the packager to be deployed and shipped with all of its dependencies into standardized units for deployment software. Docker with light, open source, security f
Server virtualization refers to a layer between the operating system and hardware, called the hypervisor layer, the control hardware, on the host operating system, operating system OS in the form of file encapsulation operation, called Virtual machine, the main problem is the hardware utilization and flexibility of the problem, The common scenario is VMware vsphere,xen,kvm,hyper-v . Container virtualization refers to running application packaging as a process on the OS, application and applicati
Learn some of the latest trends Docker is a new and good thing.1 About DockerDocker provides an envelope (envelope), or container, that can run your application. It was originally an amateur project launched by DotCloud, and was open source in the early days. It attracts a lot of attention and discussion, causing DotCloud to rename it to Docker Inc. It was originally written in the Go language, which is equivalent to a pipeline added to the LXC (LinuX
Learn about Docker from today, and record it through the collection and learning of online materials.
What is it?Docker is a VMS-like, ultra-lightweight virtual machine based on the LXC implementation.It differs from VMS in that VMS provide a complete operating system virtual environment, from the hardware level, contains a lot of similar hardware drivers, virtual processors, network interfaces and so on not needed information, and the virtual m
GRUB configuration file ...Found Linux Image:/boot/vmlinuz-3.10.0-327.el7.x86_64Found initrd Image:/boot/initramfs-3.10.0-327.el7.x86_64.imgFound Linux Image:/boot/vmlinuz-0-rescue-1ace541fd97c40e6a45fd1f7062adae8Found initrd Image:/boot/initramfs-0-rescue-1ace541fd97c40e6a45fd1f7062adae8.imgDoneCp/etc/selinux/config./Sed-i ' s/selinux=enforcing/selinux=disabled/g '/etc/selinux/configDiff Config/etc/selinux/configSetenforce 0The following is the c65 to set, c72 may not need the following.Sed-i
Docker is an open source project that was born in early 2013 and was originally an amateur project within the DotCloud company. It is based on Google's launch of the Go language implementation. The project later joined the Linux Foundation and complied with the Apache 2.0 protocol, and the project code was maintained on GitHub.Docker has been widely watched and discussed since open source, so that DotCloud company later changed its name to Docker INC. Redhat has focused on supporting Docker;goog
Server virtualization refers to the operating system and hardware to add a layer, called the hypervisor layer, the next control hardware, on the host operating system, operating system OS in file form, known as virtual machine, the main problem is the hardware utilization and flexibility of the problem, the common solution for VMware Vsphere,xen,kvm,hyper-v.. Container virtualization refers to the application of packaging in the OS to run in the form of processes, applications and applications a
Commissioning
Http://wiki.openwrt.org/doc/devel/add.new.device Adding a new device
Http://wiki.openwrt.org/doc/devel/add.new.platform Adding a new platform
Http://wiki.openwrt.org/doc/howto/build Official BuildRoot Documentation
http://axlrose.blog.51cto.com/434566/1293640 the process of installing and generating packages through OPENPCTV simple learning opkg
Http://wiki.openwrt.org/doc/devel/crosscompile Cross-compiling
HTTP://WIKI.OPENWRT.ORG/DOC/
Article Title: everyone is doing RPM. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
○ Preface
-= -=-
Creating your own operating system environment should be the dream of many Linux players. Nowadays, with the Red Hat Linux and RPM systems, the process of achieving your dreams does not seem so painful. If you are enjoying the warmth of planting trees and th
NetFilter is a functional framework for linux2.4 kernel to implement packet filtering/packet processing/nat. This paper discusses the NetFilter functional framework of Linux 2.4 kernel, and discusses packet filtering, NAT and packet processing (packet mangling) based on NetFilter framework. Read this article need to understand the 2.2 kernel ipchains principle and use method as a preliminary knowledge, if you do not have this knowledge, please read IPCHAINS-
For NFS, mounting is a very important application. In this regard, we will discuss in detail. Some people want to use NFS Root to mount the directory of their clients. This Mini-Howto was written to help these people. please note that there are many ways to achieve this, depending on your needs and objectives. if the client is independent of each other and each client has its own user group and administrator, it is necessary to share important directo
Python Socket programming and pythonsocket Programming
Socket is the foundation of network applications. Python makes network socket programming very simple. In this introduction, we will create a simple server for receiving requests from the corresponding client program.I am a little obsessed with Linux Containers recently, so we will also implement two Containers on the server. At the same time, we can create other hosts in a few seconds in the container, which can simulate a network very easi
, which is equivalent to a pipeline added to the LXC (LinuX containers,linux container), allowing developers to work at a higher level of concept.
Docker extends the Linux container (Linux Containers), or LXC, with a high-level API that provides a lightweight virtual environment for the process alone. Docker leverages LXC, Cgroups, and Linux's own kernel. Unlike
First of all. Because Docker implementations require some Linux components to support itself and kernel features. Make sure that the CentOS version number is greater than 6, and that the kernel version number is greater than 2.6.32-431. You can easily upgrade CENTOS6 to the latest version number.sudo yum upgradeThen install Cgroupsudo yum install libcgroupservice cgconfig start #启动croup服务lssubsys-amassuming a successful installation, the last command lssubsys-am displays all of the subsystem
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