dialog box controlsSet the click button to pop up the dialog box control1. ColorDialog-Color dialog boxReceive the information that determines the return========================================================2. FontDialog-Font dialog boxReceive determines the value returnedFontDialog has a Showcolor property, default is False, click to True, you can choose the font colorReceive Font Color(Lee Brainstorming Lxc)========================================
Experience containers in libvirt
Libvirt is a general virtualization framework that supports xen, kvm, and lxc Virtualization Technologies.
Set LXC to default (qemu by default)
Export LIBVIRT_DEFAULT_URI = lxc :///
Virsh-c lxc: // can be omitted
Network Settings
NAT
NAT is provided by libvirt by default, which is calle
Socket is the foundation of Network application. Python makes it super easy to get started with web socket programming. In this brief introduction we will create a simple server for accepting and requesting the corresponding client program.Since I have recently been a bit obsessed with Linux containers, we will also implement 2 containers in the server. Also in the container we can create some other hosts in a matter of seconds, which can be very simple to simulate a network.
Creating a contain
Currently, Full Hardware virtualization technology (KVM, Xen, Hyper-V, etc.) can run multiple independent operating systems on a physical host, but this also brings about some problems: poor performance, waste of resources, and slow system response. Sometimes, Full Hardware virtualization is not the best choice for users. An alternative solution is to use lightweight Virtualization Technology mdash; the so-called LinuXContainer container (LXC), which
1.Docker IntroductionDocker is an open source tool that you can use to wrap any app in the LXC container. If you say VMWARE,KVM packaged virtual machines, the Docker wrapper is the app. is a worthy PAAs.When the app is packaged into Docker image, deployment and operations become extremely simple. Can be used in a unified way to download, launch, expand, Delete, migrate.The dock can be used to:
Automate packaging and deploying any application
First, because docker requires support for some Linux components and kernel features, make sure that the centos version is later than 6 and the kernel version is later than 2.6.32-431. You can upgrade centos6 to the latest version. Sudo Yum upgrade Then install cgroup Sudo Yum install libcgroupservice cgconfig start # Start the croup service lssubsys-AM If the installation is successful, the last command, lssubsys-Am, displays the mount points of all subsystems. Install
.
Enter the topic, or enter m, followed by the name of the topic menu. For example, you can type m and then type gcc.
Go to the gcc topic.
If you want to jump between topics, you must remember the following command keys:
* N: jump to the next node of the node;
* P: Jump to the previous node of the node;
* M: Specify the menu name and select another node;
* F: Enter the cross-reference topic;
*
the previous node of the node;* M: Specify the menu name and select another node;* F: Enter the cross-reference topic;* L: Enter the last node in the window;* Tab: jump to the next hypertext link in the window;* RET: hypertext link at the cursor;* U: Go to the previous topic;* D: Return to the initial node directory of info;* H: Call up the info tutorial;* Q: Exit info.
# DEMO #3. How-
Another form of online documentation for your reference is howto
Previously offline installation Docker was Redhat 7.1 can be installed Docker 1.8 but suddenly received a command, the development environment for redhat6.5 immediately collapse,,,, because, docker1.8 in redhat6.5 run.
docker1.8 Requirements Kernel 3.10, but redhat7.1 kernel is "2.6.32-431.el6.x86_64" burst, and can not upgrade the kernel, can not be networked ... How to do it.Had to go online under the docker1.7 RPM package manually installed it, after several experiments found that 1. The requ
environment. It has a slightly higher performance than full virtualization. Like Xen. Because the kernel of the managed system needs to be changed, Xen does not support the win virtual machine.There are also hardware-assisted virtualization, which is a host hardware architecture that provides support for virtualization to some extent. Such architectural support is provided by INTEL-VT and Amd-v, please refer to the resources given.Software-level virtualization often refers to the provision of m
file systems, users and user groups, process trees, networks, devices, and IPC objects.2006-process ContainersProcess Containers was implemented by Google in 2006 to limit, account for, and isolate resource usage (CPU, memory, disk I/O, network, etc.) for a set of processes. It was later renamed Control Groups to avoid confusion with the word "container" in the context of the Linux kernel. It was incorporated into the 2.6.24 kernel. This suggests that Google has long been involved in the develo
Introduction to Linux containers and OpenVZ
OpenVZ Installation
Installing kernel Mirroring
Configuring Sysctl and installing related tools
Reboot to OpenVZ kernel
Easy to get Started
Downloading a pre-prepared template can also be called mirroring
Creating and Configuring container information
Start running and use
Introduction to Linux containers and OpenVZThe Linux container (Linux CONTAINER,
Introduction to Linux containers and OpenVZ OpenVZ installation kernel mirroring configuration sysctl and installation related tools reboot to OpenVZ kernel download a prepared template can also be called mirror creation and configure container information to start running and use
Introduction to Linux containers and OpenVZ
The Linux container (Linux CONTAINER,LXC) is a lightweight virtual running environment, with traditional virtual machine sideDiff
-byte auxiliary plane characters and other UCS-4 curried characters. --From Https://zh.wikipedia.org/wiki/Unicode#%E5%AE%9E%E7%8E%B0%E6%96%B9%E5%BC%8F
Python encodingUnicode is a series of numbers.
Python encoding refers to converting Unicode to bytes. --From Https://docs.python.org/3/howto/unicode.html#encodings
For ASCII encoding:
If the encoding point is less than 128, each bit is the same as the value of the coded
is that Docker is a Linux-based and LXC-based system-the so-called LXC is a set of user space interfaces, specifically for the features contained in the Linux kernel.
LXC aims to create an environment that is as consistent as possible with the standard Linux installation version, but does not need to use an independent kernel system. As stated on linuxcontainers
1.Cgroup section (all cgroup subsystem configuration parameters can be dynamically obtained or adjusted via Lxc-cgroup command)
LXC uses Cgroup for resource management of containers, so each subsystem of cgroup can be used. The Mount None-t cgroup/cgroup Mount Cgroup must be performed before the LXC is actually used, or the echo "None/cgroup cgroup defaults 0 0"
:/home/avi/Desktop#expr2+3
5
avi@localhost:/home/avi/Desktop#expr6–3
3
avi@localhost:/home/avi/Desktop#expr12/3
4
avi@localhost:/home/avi/Desktop#expr2\*9
18
27. look command
Query words from the English dictionary on the terminal to prevent confusion. For example, I can't remember whether it should be carrier or carieer.
avi@localhost:/home/avi/Documents#lookcar
Cara
Cara's
…
...
carps
carpus
carpus's
carrel
carrel's
carrels
carriage
as a security defense line is,If the intruders get a non-root account but do not get the root permission for the files, they can only cause damage to the intruded areas.Moreover, if the root account is the owner of most files in the intrusion region, there are not many attacks for intruders. Apparently, if your account is compromised,There must be something wrong, but it is best to reduce the damage that intruders can cause.
Remember that what I did is not 100% correct. This is my first attempt
, so paste the URL ..)
1. Create a non-modal cpropertysheet and implement the standard button response (the non-modal cpropertysheet does not have any buttons by default)
Q146916:How to Create a modeless cpropertysheet with standard buttonsHttp://support.microsoft.com/kb/146916/en-us
2. Hide the Apply button (the implementation in the preface link is also included in the introduction to the following link)
Q141039:Howto: how to hide the Apply butt
as a security defense line is,If the intruders get a non-root account but do not get the root permission for the files, they can only cause damage to the intruded areas.Moreover, if the root account is the owner of most files in the intrusion region, there are not many attacks for intruders. Apparently, if your account is compromised,There must be something wrong, but it is best to reduce the damage that intruders can cause.
Remember that what I did is not 100% correct. This is my first attempt
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