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RSS订阅转载 How connection tracking in Open vSwitch helps OpenStack performance
By introducing a connection tracking feature in Open vSwitch, thanks to the latest Linux kernel, we greatly simplified the maze of virtual network interfaces on OpenStack compute nodes and improved it
2016-08-01 17:07:11
705
原创 ubuntu livecd isolinux的定制
启动部分的菜单,显示内容等是在gfxboot-theme-ubuntu源码中,apt source gfxboot-theme-ubuntu gfxbootcd gfxboot-theme-ubuntu*/make DEFAULT_LANG=zh_CNsudo cp -af boot/* ../live-cd/isolinux/参考:https://help.ubunt
2016-04-29 15:31:25
2787
原创 centos 7和Windows 10双系统启动配置
在/boot/grub2/grub.cfg文件中增加一个启动项，如下：menuentry "Windows 10" --class windows --class os { insmod part_msdos insmod ntfs insmod ntldr set root='(hd0,msdos1)'
2015-12-30 15:59:36
554
转载 Building a pure Debian armhf rootfs
There are lots of filesystems images for various Debian flavours on ARM developer boards like the Cubietruck floating about. Most of these images are large binary files of unknown providence and even
2015-06-12 10:28:31
1491
原创 libvirt在使用virbr0并发启动虚拟机时死锁
日志如下:Jun 9 10:30:52 localhost kernel: ip_tables: (C) 2000-2006 Netfilter Core TeamJun 9 10:30:52 localhost kernel: nf_conntrack version 0.5.0 (16384 buckets, 65536 max)Jun 9 10:30:53 localhos
2015-06-09 11:07:39
1196
转载 android sdk adt更新配置
203.208.46.146 www.google.com74.125.113.121 developer.android.com203.208.46.146 dl.google.com203.208.46.146 dl-ssl.google.com
2014-10-22 22:18:05
343
转载 ER diagram for OpenStack database
import ConfigParserfrom sqlalchemy import MetaDatafrom sqlalchemy_schemadisplay import create_schema_graphconfig = ConfigParser.RawConfigParser()config.read('/etc/nova/nova.conf')connection
2014-05-06 10:22:13
673
原创 在centos6.5上rpmbuild openstack horizon包
在编译时遇到unkown sub command "collectstatic"时,需要
2014-04-25 18:12:21
970
转载 nova resize "Host key verification failed"
# usermod -s /bin/bash nova # su - nova $ chcon -u system_u -r object_r -t user_home_t . $ mkdir -p -m 700 --context=system_u:object_r:ssh_home_t:s0 .ssh && cd .ssh
2014-04-23 09:29:51
820
转载 RDO Havana Neutron&GRE L3 Layer Troubleshooting
RDO Havana Neutron&GRE L3 Layer TroubleshootingThis post follows up http://lxer.com/module/newswire/view/200975/index.html For Basic Neutron Networking concepts,please, view developer.rack
2014-04-23 09:18:06
678
转载 OpenStack Horizon How to include custom stylesheets css less
Method 1 (Tested with OpenStack Havana)=========================== 1)Create a folder for css/less. like,horizon/openstack_dashboard/static/custom_dashboard/less2)Goto that folder and c
2014-04-17 15:44:52
683
转载 USB Redirection hack on "Two Node Controller&Compute Neutron GRE+OVS" Fedora 20 Cluster
USB Redirection hack on "Two Node Controller&Compute Neutron GRE+OVS" Fedora 20 Cluster I clearly understand that only incomplete Havana RDO setup allows me to activate spice USB redi
2014-04-16 10:15:08
6222
转载 Setting up Neutron-dhcp-agent & Dnsmasq on Two Node Neutron GRE+OVS F20 Cluster to launch VMs with M
Setting up Neutron-dhcp-agent & Dnsmasq on Two Node Neutron GRE+OVS F20 Cluster to launch VMs with MTU 1454 automatically When you first time boot cloud instance (RDO Havana) via `nova bo
2014-04-16 10:10:58
2365
转载 aunching Instance via image and creating simultaneously bootable cinder volume (glusterfs) on Two No
Launching Instance via image and creating simultaneously bootable cinder volume (glusterfs) on Two Node GRE+OVS+Gluster F20 ClusterActually, post is about attempt to make working following
2014-04-16 10:09:21
750
转载 Direct access to Nova metadata
Attempt to reproduce "Direct access to Nova metadata per Lars Kellogg-Stedman"Quoting http://blog.oddbit.com/2014/01/14/direct-access-to-nova-metadata/In an environment running Neutro
2014-04-16 10:08:08
659
转载 HowTo access metadata from RDO Havana Instance on Fedora 20 & OpenStack Networking concepts
HowTo access metadata from RDO Havana Instance on Fedora 20 & OpenStack Networking conceptsOpenStack Networking conceptsThe OpenStack Networking components are deployed on the Control
2014-04-16 09:30:44
856
转载 RDO Havana Neutron Namespaces Troubleshooting for OVS&VLAN (GRE) Config
RDO Havana Neutron Namespaces Troubleshooting for OVS&VLAN (GRE) ConfigThe OpenStack Networking components are deployed on the Controller, Compute, and Network nodes in the following conf
2014-04-16 09:23:19
565
转载 Identifying and Troubleshooting Neutron Namespaces
I recently gave you an intro to my talk at the Hong Kong OpenStack Summit about Neutron namespaces. One of the commenters had seen the video of my talk and requested that we post the slideshow. In t
2014-04-15 10:14:05
445
翻译 深刻理解Python中的元类(metaclass)
类也是对象在理解元类之前，你需要先掌握Python中的类。Python中类的概念借鉴于Smalltalk，这显得有些奇特。在大多数编程语言中，类就是一组用来描述如何生成一个对象的代码段。在Python中这一点仍然成立：123456>>>classObjectCreator(object)
2014-04-08 12:29:11
451
转载 Virtual Machine Optimization
Contents [hide]1 Introduction2 3rd Party Tools & Documents2.1 Tools3 Licensing is Your Responsibility4 Best practices for Installing Virtual Machines5 Optimizing your Golden Master
2013-12-27 13:20:34
1411
原创 remaster ubuntu alternative iso
sudo uck-remaster-unpack-iso ubuntu.isosudo uck-remaster-prepare-alternategpg --gen-keygpg --list-keysudo uck-remaster-finalize-alternate 691D19E1sudo uck-remaster-pack-isols
2013-11-20 13:53:27
1071
转载 Ubuntu 12.04 3600 GMA Driver for Intel (Cedarview)
There is a ppa repository with drivers for ubuntu 12.04 at http://ppa.launchpad.net/sarvatt/cedarview/ubuntu/With the following steps, you can get accelerated X working with the Intel Cedarview Ch
2013-10-08 13:09:17
1788
原创 rebuild gsettings schemas
1.in /usr/share/glib-2.0/schemas/2.use glib-compile-schemas /usr/share/glib-2.0/schemas to rebuild the schemas
2013-09-26 10:01:20
708
原创 No matching signal for on_something_event
QtWarning QMetaObject::connectSlotsByName: No matching signal for on_something_event() Search with Google I found a post that explained, very clearly, what happens. I'd bet it's somewhere in the
2013-09-26 09:08:12
882
原创 lzma inird de/compress
In case of Ubuntu 12.04 the initramfs image is a CPIO image with LZMA compression. You can decompress it by the following: mkdir /tmp/ubuntu_bootcd /tmp/ubuntu_bootcat /cdrom/casper/in
2013-09-26 09:08:09
752
原创 pxe ubuntu livecd
Setting up PXE boot of Ubuntu 12.04 Live CD INTRODUCTION Sometimes it's nice to boot a complete operating system over a network, and not have to install to a drive or use
2013-09-26 09:08:07
1153
原创 linux并口编程
The printer is accessible through /dev/lp0; in the same way, the parallel port itself is accessible through /dev/parport0. The difference is in the level of control that you have over the wires in the
2013-09-26 09:08:05
1286
原创 Virtualbox – Host guest communication.
Will try to explain the architecture/design behind host guest communication in VBox with an example of display. You can dynamically configure virtual monitors (attached to guest OS) using SetVid
2013-09-26 09:08:03
739
原创 autostart desktop example
/usr/share/applications/stumpwm.desktop[Desktop Entry] Type=Application Name=StumpWM Exec=stumpwm NoDisplay=true # name of loadable control center module # name we put on the WM spec check window X-GN
2013-09-26 09:08:00
1033
原创 ubuntu fix tooltip script
#/bin/sh # Tooltip fix # A script to fix themes files in Ubuntu 11.10 # to have readable tooltips in applications such # as eclipse. # The script edits the gtk.css, settings.ini and gtkrc files # Au
2013-09-26 09:07:58
577
原创 usb redir
Set up Qemu-kvm 1.1 & Spice-gtk 0.12 with USB redirection on Ubuntu Precise$ sudo add-apt-repository ppa:bderzhavets/lib-usbredir81$ sudo apt-get update$ sudo apt-get install qemu-kvm qemu qemu-common
2013-09-26 09:07:56
1274
原创 skype
/usr/bin/qemu-kvm -S -M pc-0.14 -cpu> core2duo,+lahf_lm,+sse4.1,+xtpr,+cx16,+tm2,+est,+vmx,+ds_cpl,+pbe,+tm,+ht,+ss,+acpi,+ds> -enable-kvm -m 1536 -smp 1,sockets=1,cores=1,threads=1 -name w7test
2013-09-26 09:07:54
502
原创 keepalive
In libvirt, it's perfectly possible and widely used to have disabledtimers (timeout=-1) and fire them up 'randomly' with timeout=0.However, with current mapping into glib mainloop it's not possibl
2013-09-26 09:07:52
543
原创 ubuntu 12.04 透明支持解决方法
gconftool-2 --set --type=bool /apps/metacity/general/compositng_manager true 管理员在2009年8月13日编辑了该文章文章。 --> -->
2013-09-26 09:07:49
612
原创 libvirt vm com1
virsh console vmname 管理员在2009年8月13日编辑了该文章文章。 --> --> 阅读(62) | 评论(0) | 转发(0) |
2013-09-26 09:07:47
505
原创 C++ , QT Adding Icon/Image to Label
Summary : This code shows how to add image to QLabel.Inserting image inside QLabel text involves setting TextFormat to RichText and adding image tag with required values.#include int main(int argc
2013-09-26 09:07:45
605
原创 How to enable sound in Ubuntu 11.04 While login as root
Here’s a simple way to make sound work after reboot.1.) First, log out current account and log-in as root.You can enable root account by running this command in terminal, enter current user password a
2013-09-26 09:07:43
670
原创 kvm windows guest NMI crash dump in libvirt
1.create a DWORD value NMICrashDump = 1 in HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\CrashControl ;2. uncheck "automatically restart" in "Properties of my computer" -> "Advanced" -> "Startup
2013-09-26 09:07:37
1300
原创 openstack network specify gateway
–-dnsmasq_config_file=/etc/nova/dnsmasq.confdnsmasq.conf should contains:dhcp-option=6,10.1.100.254dhcp-option=3,10.1.100.254dhcp-option 6 should be set to the resolver you want to use, and dhcp-optio
2013-09-26 09:07:34
790
原创 Using SCSI Persistent Reservations with RHEL6 Advanced Platform Cluster
Using SCSI Persistent Reservations with RHEL Advanced Platform Cluster1 IntroductionWhen cluster nodes share storage devices, it is necessary to control access to the storage devices. In the event of
2013-09-26 09:07:32
875
Prentice.Hall.Essential.Linux.Device.Drivers.Apr.2008.chm
2010-08-01
Agile.And.Iterative.Development.A.Managers.Guide
2010-08-01
SIP协议中文手册-01
2010-07-28
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