Author Archives: jeff

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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Enable Wireless in Ubuntu on MacBook Pro

Probe your hardware jeff@umac:~$ lspci -nn -d 14e4: 02:00.0 Multimedia controller [0480]: Broadcom Corporation Device [14e4:1570] 03:00.0 Network controller [0280]: Broadcom Corporation BCM4360 802.11ac Wireless Network Adapter [14e4:43a0] (rev 03) Install driver (I use my mobile phone tethering network to … Continue reading

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Install Ubuntu 14.04 LTS Trusty Tahr on MacBook Pro Retina 2013

First of all, there is NO need to have Ubuntu Desktop specific for Mac. I just successfully installed standard Ubuntu 14.04 LTS Trust Tahr 64 bit downloaded from http://www.ubuntu.com/download/desktop . Here are the steps that I went through (Optional) Install Mac … 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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Dual- boot of MacBook Pro and Ubuntu. Change Boot Sequence

I’ve installed Ubuntu on my MacBook Pro (Retina 2013 November edition) and enabled dual- boot by rEFInd (reference http://www.rodsbooks.com/ubuntu-efi/). By default the system boots into Windows partition which does NEVER exist. Here is the step how to change boot sequence to … Continue reading

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Install Skype on Ubuntu Saucy x86_64

Download Skype 32bit, install then receive the following error skype: error while loading shared libraries: libXss.so.1: cannot open shared object file: No such file or directory Find out which package contains libXss.so jeff@umac:~$ sudo apt-file search libXss.so libxss-dev: /usr/lib/x86_64-linux-gnu/libXss.so libxss1: … Continue reading

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