[root@my-box ~]# useradd -g users -u 560 tuser
[root@my-box ~]# passwd tuser
The US military has announced plans to buy 2,200 more of the game consoles, so that they can massively beef up the processing power of an existing, PS3-based supercomputer. A “Justification Review Document,” which has oddly been deleted from Google since I found it but is still available at this cache link, explains that, “the new PS3s will be placed in a cluster environment with an existing cluster of 336 PS3s by connecting each of the units’ one gigabit Ethernet port to a common 24 port gigabit hub.”
via arstechnica.com
When I tried to restart mysql
sudo /etc/init.d/mysql restartit failed with
* Stopping MySQL database server mysqld [ OK ]
* Starting MySQL database server mysqld [fail]
Continue reading ‘Quick fix problem with mySQL starting on Ubuntu 9.10’ »
When top level guys look down they see only shit. When bottom level guys look up they see only ..
Continue reading ‘A little bit of humor..’ »
Short how-to about configuring Ubuntu to work with EC2 API
Continue reading ‘Configuring Ubuntu ( 9.10 ) to work with Amazon EC2’ »
Update in Amazon Web Services:
and Quadruple Extra Large – 68.4 GB of RAM/ 26 ECU (8 virtual cores* 3.25 ECU) : New EC2 High-Memory Instances
Distributed, non-relational database systems – DNRDBMS – see
If anyone interested in it – here’s new update for Sun Grid Engine 6.2 – update 4. It almost about bug fixing and man’s changes – list of changes is here. Sources’ tag for CVS is V62u4_TAG (make sense for Grid Engine, ARCo, SGE Inspect ), by the way as I know Hedeby is still 1.0u3.
- 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
Grid Dynamics nominated “2009 Top 150 Cloud Computing Players” by Cloud Computing Journal. Look at letter G – here we are, around Google. 
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Public cloud providers : hybrid cloud vs instance types, API logging vs stability – comparing goGrid and Amazon EC2 .GoGrid is officially out of beta, so now it’s time to compare GoGrid with the public cloud market leader, Amazon EC2. Both vendors have relatively stable performance metrics and they both implement the basic functionality of a cloud provider:
- Programmatic control via REST API
- Scalable data storage solution: Elastic Block Storage in Amazon AWS and CloudStorage in GoGrid
- Ability to assign external IP addresses
- Ability to grant root/administrator credentials
- Many options to configure the cloud cluster
- Windows and Linux support
- Web console for monitoring and management
So far, as cloud providers GoGrid and Amazon EC2 look very similar, but practical experience of using them in real-life projects helps us identify some unique features that can be important for specific applications – for highlighed features and bad points for both providers look onto GoGrid is out of beta on Grid Designer’s Blog
- Performance Check – EC2 Instance Types vs Virtual Server
- 10 reasons why cloud computing is bad idea
- Dulance returns back and Google’s Special Snippets for Price Comparison Sites
- Running Terracotta on Amazon EC2 ( terracotta.org )
- Using amazon EC2 security groups as tags for instances
- Cloud Hosting Performance – comparing popular cloud providers in real time for last 48 hours
- GoGrid Management Tools and Library – by the way today goGrid officially out of beta
Some Sony Vaio owners ( my own is VGN-FZ31ER ) may have MAC is in deep sleep! problems – WiFI doesn’t work under Ubuntu because WLAN driver goes into forever sleep ( some bug in power safe logic I suppose ). This bug can be fixed by adding “noacpi” parametrs to Ubuntu boot command line.
* Cloud Computing makes your IT excessively dependent on the Internet
* Cloud Computing will attract clients mainly from Western markets
* Cloud Computing makes you dependent on the goodwill of your ISP
Continue reading ‘10 reasons why cloud computing is bad idea’ »
- Realtime data on subway / bus arrivals / locations for use in mobile apps,
- Free WiFi locations in all 5 boroughs
- Mobile app to replace metro cards and kiosks
On one of my apache I use suexec to run some tasks – some weeks before I configure all it and all stuff works well, but some days later when I try to run my cgi-perl script I found I have “500 Internal error”. I change nothing in apache config or in my scripts – I just install fresh updates for ubuntu. In apache’s error log I’ve got :
[Wed Jul 29 08:15:28 2009] [error] (13)Permission denied: exec of ‘/usr/lib/apache2/suexec’ failed [Wed Jul 29 08:15:28 2009] [error] [client my_ip] Premature end of script headers: script.plIt’s strange, but anyway it doesn’t works. I spent some time trying to fix it ( some guys recommend to rebuilt suexec – but it’s not a simplest way to fix this problem ) – in my case it was fixed by changing owner of my suexec. I check out current properties :
ls -la /usr/lib/apache2/suexec
-rwsr-xr– 1 root www-data 18872 2009-07-10 18:40 /usr/lib/apache2/suexec
and change them :
And don’t forget to restart :
/etc/init.d/apache2 restartps. by the way suexec’s id’s are :
#id www-useruid=1000(www-user) gid=109(www-group) groups=109(www-group)
Microsoft is offering about 20,000 lines of its own device drivers to the Linux kernel that will enable Linux to run as a guest on its Hyper-V virtualization technology. Specifically, the contributed loadable kernel modules enable Linux to run in ‘enlightened mode’, giving it efficiencies equivalent to a Windows virtual machine running on Hyper-V. Also see Redmond Releases Code to Linux Kernel Community at pcworld.com
If you’re looking for free light-weight Java class decompiler – take a look onto Emmanuel Dupuy’s JD – nice stuff with size about a 1 MB.