Alexey Bokov's weblog

As you know we recently add DNS services into preview mode and you can subscribe to this service using Request-AzureProvideFeature like that

Request-AzureProvideFeature -ProviderNamespace Microsoft.Network -FeatureName azurednspreview

So good question here is about how get list of all possible available options for FeatureName ?

Continue reading ‘List of all available preview services in Azure’ »

I will describe how this schema works for single VM with running Linux/Jelastic. So first of all let check that do we have for that VM by using Get-AzureDeployment command and then let go deep that happened inside that file

Continue reading ‘All about Azure Service Configuration Schema .cscfg’ »


Get-AzureVM | Where-Object {$_.InstanceSize -ne 'Basic_A0'} | Set-AzureVMSize "Basic_A0" | Update-AzureVM


Q: How to get Azure VM external IP address ( if you not use PublicIP service ) ?

A:  If you’re not using ReservedIP service field PublicIP will be empty ( as soon as there’s no reserved IP ) for command Get-AzureVM. I using Swtich-AzureMode just in case to be sure that we’re in right Azure mode in powershell right now.

PS C:\> Switch-AzureMode -Name AzureServiceManagement
PS C:\> Get-AzureVM


PS C:\> Get-AzureVM -ServiceName "abokov-jelastic" | Select-object  Name, DNSName, *IP*


Name                    : abokov-jelastic
DNSName                 : http://abokov-jelastic.cloudapp.net/
IpAddress               : 10.0.0.4
PublicIPAddress         :
PublicIPName            :
PublicIPDomainNameLabel :
PublicIPFqdns           : {}
OperationDescription    : Get-AzureVM

You may see that this VM have DNS name, internal IP, but public IP is empty, nevertheless that there’s is an external IP address which is linked to that VM. To get external IP you may use command Get-AzureEndPoint which returns all information about all endpoints for that cloud service – in my case I have 7 open ports and to make this more readable I select only few fields from output.

PS C:\> Get-AzureVM -ServiceName "abokov-jelastic" | Get-AzureEndPoint | Select-Object Name, Port , *ip*

Name Port Vip VirtualIPName
—- —- — ————-
dns-TCP 53 23.99.218.74
dns-UDP 53 23.99.218.74
http 80 23.99.218.74
http4848 4848 23.99.218.74
https 443 23.99.218.74
https4949 4949 23.99.218.74
ssh 22 23.99.218.74

Short how-to:

root@215003:~# mysql -u root -p
Enter password:
mysql> CREATE DATABASE s_db;
mysql> GRANT ALL PRIVILEGES ON s_db.* to 's_user'@'localhost' IDENTIFIED BY '12345678';
mysql> FLUSH PRIVILEGES;
mysql>exit
mysql -u s_user -p s_db < database.sql
<code>

By unknown reasons Sun JDK was moved to partner repository, so to use sun jdk you need to do this steps

sudo add-apt-repository "deb http://archive.canonical.com/ lucid partner"
sudo apt-get update
sudo apt-get upgrade

and then enjoy :

sudo apt-cache search jdk | grep sun
sun-java6-source - Sun Java(TM) Development Kit (JDK) 6 source files
sun-java6-jre - Sun Java(TM) Runtime Environment (JRE) 6 (architecture independent files)
sun-java6-jdk - Sun Java(TM) Development Kit (JDK) 6
sun-java6-javadb - Java(TM) DB, Sun Microsystems' distribution of Apache Derby
sun-java6-demo - Sun Java(TM) Development Kit (JDK) 6 demos and examples
sun-java6-bin - Sun Java(TM) Runtime Environment (JRE) 6 (architecture dependent files)


You can use sed :

sed -e 's/\([^\d]*\)/\L\1/' in.txt > out.txt

or perl inliner :

perl -ne 'utf8::decode $_; $_ = lc $_; utf8::encode $_; print' in.txt > out.txt
.
Both guys works fine for unicode file too.

Okay, we have text file with list of urls and want to have firefox’s screenshots from this pages and also we need to have this screenshots in some normalized resolution ( like all images should be in 300×400 – thumbnails ). First of all you need to install Command line print Firefox add-on. Then create some simple script which will run firefox with needed url, print screenshot and close ( in my case via kill – may be it’s too brutal ) firefox in cycle. It may look like this ( url_list.txt – file with urls – each url on its own line :-)), after running this script you will have many *.png files which is screenshots for ulrs – 0.png – for first url in urls_list.txt, 1.png for second and so on.

#!/bin/bash
id=0
while read line
do
firefox -print $line -printmode png -printdelay 10 -printfile ${id}.png
ps ax | grep firefox | awk '{ print $1 }' | xargs kill -9 ;
id=$[$id+1]
done < urls_list.txt


And now then we have screenshots ( all this guys are in different resolution in common ) then we need to normalize them – to create thumbnails for all images in 300×400 resolution – convert helps!

for f in *.png;
do
convert -thumbnail 300x400! ${f} thumb_${f}
done

And we have many thumb_*.pn with 300×400 resolution all. A little note – using resolution without ! sign will work in another way – resize will be processed proportionally with using resize only for one dimension ( bigger one ).

We have git repo at github (  and would like to move onto some our corporate box inside our network, for example on internal.bokov.net. This repository is shared for group of developers and all who have ssh access onto internal.bokov.net shall have right to commits onto git repository. So first of all prepare place for git repo at new hosting :

ssh user@internal.bokov.net
cd var
mkdir git_repo
chmod 777 git_repo
cd git_repo
mkdir my_project
cd my_project
git init --bare --shared=all
cd objects
chmod g+ws *


Next clone existing repo and change its settings to point onto internal.bokov.net

git clone --bare git@github.com:bokov/github_project.git
git remote add -t master -m master origin ssh://internal.bokov.net/var/git_repo/my_project/
git push origin master


to start work with new repo just use

git clone ssh://internal.bokov.net/var/git_repo/my_project/


have fun.

Short how-to about configuring Ubuntu to work with EC2 API ( for Ubuntu 10.04 users – Sun JDK was moved to partner repository so please check out Where’s sun JDK on Ubuntu 10.04 ? before follow described steps ).

Continue reading ‘Configuring Ubuntu ( 9.10 ) to work with Amazon EC2’ »

Update in Amazon Web Services:

• Recursively add files and foldes into CVS

find . -type d -print | grep -v CVS | xargs -n1 cvs add

• Delete “.svn” files from current folder

find . -type f  -exec echo \"{}\" \;  | grep ".svn" | xargs rm

• Cloud Hosting Performance
• Measuring EC2 system performance
• Comparing Amazon EC2 performance with other cloud/VPS hosting options… and real hardware
• Monitoring Cloud Computing Performance with PRTG: CPU, Disk, Memory Speed Comparison of Amazon EC2 Instance Types
• Posted by Alexey Bokov on August 18, 2009 at 5:47 pm under administration, compute grid, internet, useful links.
  Tags: administration, Amazon EC2, gogrid, work
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