Month: January 2014

Ribbon bar is better

Ribbon bar is better. Original design put the major buttons on the LHS, but it grabs space than the tree (describe the openstack architecture). Also the original design put all the function buttons on the bottom, it is better to put it on the ribbon bar that on the top. In ribbon bar, major button…
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2014/01/30 1

Availability zone in titan

Availability zone in titan, will work out this in chinese new year holiday.


2014/01/29 1

openstack VM hang up after changed screen solution

openstack VM hang up after changed screen solution, i tried to change the screen resolution from 1280×1024 to 800×600, the screen just size down, but the VM is hang. It is completely hang because i can’t even ping/ssh to that VM. Do you know the reason?


2014/01/21 0

slow ssh connect to host from openstack vm

if you having a slow-login problem when you are trying to connect ssh from the openstack vm to the outside world. This will solve the issue: Edit /etc/nsswitch.conf , change “hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4” to “hosts: files dns”, no need to restart anything, ssh login prompt will come out quickly.


2014/01/18 0

titan agent is working!

titan agent is working! it is written in java, sending back the server status (cpu/mem/etc…) back to titan server in json form.


2014/01/15 0

VM process window, i think this will be good enough

Still working on the VM process window, I want titan user able to see clearly inside VM. In this window, the chart will show the cpu/memory usage of that VM. I will enhance it to: 1. When select a process on the bottom, the chart will show the cpu usage only to that process. This…
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2014/01/13 0

vSphere client chart options

Here is the screens from vsphere client, many things for us to learn how to design charting.


2014/01/10 0

openstack vm can’t access interest (solved)

Here is my home openstack lab, if you follow the openstack official guideĀ to try openstack, your environment will be pretty similar than mine. I met a trouble: my openstack vm can’t access internet. Here is how to solve it: My environment is: 1) I got a broadband line, connected to the gateway server, the gateway…
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2014/01/08 0

Instance chart

You can now select a VM, click the “log” button on the bottom, you can see vm’s cpu/memory chart.


2014/01/08 0

you can start nova in this way

When you failed to start nova-network or nova-compute by command “service nova-compute start”, the log will has nothing. But you can solve this by “service nova-compute start && ps aux|grep nova-compute”, this command will list out the command line to start nova-compute, just paste that into your terminal, now your nova-compute is running directly rather…
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2014/01/07 0

Titan Architecture (2014/01/05 update)

This is the Titan architectural diagram. Titan solution consists of 4 projects, they are: 1. Titan Server – It is the core part of the system, it used to controls all openstack services (nova, neutron, etc…). The role of the titan server is to execute the command from Titan management tool. 2. Titan – It…
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2014/01/05 0

Great article about openstack+linux network

Great article about openstack+linux network http://robhirschfeld.com/2013/10/16/openstack-neutron-using-linux-bridges-technical-explanation/


2014/01/04 0

“nova show” command doesn’t retrieve all the log records from table instance_faults

I am designing the log window (see below) for titan to show the error log for an instance. When the instance is fail to start, i can use “nova show” to get the error message, but the message is only the last record of tableĀ instance_faults, so the log message is not complete. Any openstack command…
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2014/01/04 0

Titan Log window

When you try to launch a new VM, and if it is failed. You can click the “Log” button to view the error message, this help you to trace the error.


2014/01/03 0