Category Archives: virtualization

Design of OpenStack Cloud Data Center in My Mind

The subject has 3 meanings In OpenStack framework It’s a Cloud, which is dynamic, not static. Self service. You get what you need almost immediately. It’s production in data center with high volume traffic of CPU, disk and network Technically, … Continue reading

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My Simple Diary of OpenStack Summit

This is my 3rd time attending OpenStack summit. The world is changing fast. Since I came back from OpenStack summit Atlanta, I do see new fresh air Ceph, from Inktank, acquired by Red Hat months ago, a proved product which … Continue reading

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/etc/udev/rules.d/70-persistent-net.rules makes network unavailable

After launching a VM, sometimes network becomes unavailable until you manually remove [root@j3ffyang~]# rm -fr /etc/udev/rules.d/70-persistent-net.rules The workaround is to stop generating this rule mv /lib/udev/rules.d/75-persistent-net-generator.rules /tmp To process this in batch for i in `cat /tmp/allnode.lst | awk ‘{print … Continue reading

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How to Share a VPN from VM on Mac

Because our OpenConnect VPN from company provides a very poor connection for Mac, I switch to share an AT&T Global Network (AGN) VPN running in a Ubuntu VM inside of Mac OS. Here are the steps On Mac Install VirtualBox … Continue reading

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Apply VirtIO for KVM over KVM (Day 2)

I talked w/ David Ke Zhu @ dev team and confirmed that VirtIO is a mandatory plugin driver to apply in order to improve the IO performance of disk + network. HSLT depends on this driver. (Thanks to David). Good … Continue reading

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Apply VirtIO for KVM over KVM (Day 1)

We received a complaint regarding KVM performance issue today. Customer reports the performance is poor when copying files from native bare- metal Windows box to Windows 2003 VM created over KVM on CentOS 5.5 host box. Searching @ RHEL KVM … Continue reading

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Post- install Packages after Ubuntu Desktop Setup

After default install of Ubuntu 10.04 LTS, here are the additional dpkg to apply: network-manager-vpnc ubuntu-desktop p7zip gimp imagemagick seamonkey chromium-browser pidgin kvm libvirt-bin ubuntu-vm-builder bridge-utils acroread sun-java6-bin sun-java6-jdk ubuntu-restricted-extras scim-pinyin skype usb-modeswitch rcconf ssh openconnect

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