September 16, 2007
Some users report problem when backup is performed using mysqldump command line utility under the Linux OS. The version affected in our tests were 4.1.20.
mysqldump: Got error: 1044: Access denied for user ‘root’@'localhost’ to database ‘information_schema’ when using LOCK TABLES
To quickly fix this problem use the following switch when running mysqldump for MySQL database backups.
mysqldump -u root -p –all-databases –single-transaction > all.sql
Filed under: Tips by Linux Admin
No Comments »
August 27, 2007
We are proud to offer high quality and reliable managed web hosting services for WordPress blog owners.
We offer various plans for WordPress blog hosting, including blogs hosted on our WordPress cluster (powered by high-speed BGP network- Internap and many other network providers), WordPress managed blog multi-architecture cLuster technology with multiple front-end and back-end servers, as well as custom server management and tuning of your existing dedicated server that runs your WordPress blog.
More information: http://www.linuxadmin.org/blog-managed-hosting.php
Filed under: News by Linux Admin
1 Comment »
We are offering remote FFmpeg utility set-up for Red Hat Enterprise, Fedora and Centos servers. The price is $40 for each server.
What is FFmpeg? It’s a set of programs that can record and convert various digital audio and video formats. For example, you can covert .mpeg files to .avi.
Filed under: News by Linux Admin
No Comments »
August 12, 2007
Everybody of us who are specially the internet users must have opened web pages where we get to watch many videos and multimedia contents but will someone tell me what format is it or how the websites integrate these multimedia applications so that we are able to see and use it? Yes, it’s mainly a Flash video. It is a standard file format which is used to cast videos and multimedia movie contents in the web. Now this is a streaming video which is done by a particular standard host in the web world. This article takes you to that arena.
What is Streaming media?
A series of moving images that needs to be casted on a web page in the internet which is decompressed (file size is reduced) for accommodating it in the web page. This is known as Streaming media (video). When an internet user opens that particular page he gets to see that streaming video scene after scene.
Streaming flash video
When a streaming video is in form of a flash video it is called Streaming flash. A flash video has always an .flv extension just like the well known .mpeg extension of windows media. These videos are generally entrenched in an SWF file. Naturally to play that video the user needs some compatible players (flash video playing software). These video players are available for free from Adobe Corp. or Macromedia website. A user without having this software’s installed in their PC’s will not be able to view the videos of a webpage.
Standard hosting
When we say the word Hosting we generally mean one which hosts some occasion or event or anything. Just as we need a host to present an event similarly we also require a host to present these streaming flash media on the respective web pages. There are several websites that does this job.
Today every thing has gone digital. Everyone desires to appear at the foremost position. Many people who have opened their personal web pages on the net may need to put on some of his personal videos. Many companies desiring to make the people aware of their promotions, meetings, tie-ups, product launches also opt for this streaming flash hosting. This is because the costs of hosting these videos are very cheap. They ultimately help them to save on their advertising and marketing campaigns.
Today this type of standard hosting is employed by various television, news channel (like BBC) and entertainment websites (like YouTube). Many users log on to the net for watching news, TV serials or programs missed by them or even trailers of forthcoming movies. This means it helps these companies to earn good revenue each and every time the users log on to the web sites.
That is it can be said that streaming Flash contents using a standard host can add to a good amount of publicity for a company in a very cost effective approach.
Filed under: Streaming by Linux Admin
2 Comments »
July 19, 2007
We have been doing FTP hosting for some time now and I would like to share our experience.
At the beginning we started with different FTP servers and quickly we found out that vsftpd is lightning fast and secure. So we chose to run vsftpd on all our FTP server hosting nodes and so far the experience have been really outstanding.
One of our busiest FTP node runs easily at 80-90Mbps and performs well with 500+ users connected. The hardware is kinda low-end, a Pentium 4 with one CPU and 2GB RAM, the hard disks are SATA. Server has full-duplex 100Mbps uplink and we are quite happy with it!
In one month it usually transfers around ~23 Tera bytes (23,000 GB’s) of outgoing data and around 7TB of incoming data for file uploads. We do not run any RAID technology on this low-end and cheap Linux server.
Filed under: Content Distribution by Linux Admin
No Comments »
July 6, 2007
Some Cpanel systems miss Yaml::Syck package and /scripts/upcp display a bunch of errors. To fix this problem you may install YAML-Syck package by downloading tar package (at this time of writing the filename: YAML-Syck-0.91.tar.gz ) or you can always run perl Cpan shell to install it the easy way 
(login to root account and execute in shell:)
perl -MCPAN -e shell
install YAML::Syck
Enjoy
Filed under: Tips by Linux Admin
1 Comment »
June 19, 2007
If you have a folder with a lot of files in a directory and with a specific string that you want to change you can do it in seconds using grep and perl command line:
grep -R –files-with-matches ‘OLDSTRING’ . | sort | uniq | xargs perl -pi~ -e ‘s/OLDSTRING/NEWSTRING/’
Where OLDSTRING is the string you want to find and replace with NEWSTRING.
Filed under: Tips by Linux Admin
No Comments »
Flash streaming has been lately the king of all Internet streaming formats. YouTube uses it, Google Video uses it.
There are many solutions how to stream or offer progressive downloads of flash video files – free and paid streaming servers. Large companies with deep pockets usually use Flash Media Server, but many folks prefer to use progressive download “streaming” over HTTP protocol – it is cost-effective, easy to set-up and reliable.
Currently, flash progressive downloads are possible with simple php hack for apache web server, or you can even use lighttpd web server or nginx that fully support flash streaming. There is also an open source alternative to real flash streaming servers RED5 (with RTSP support). It offers real time flash streaming as well as mp3 streaming and it’s code is based on Java.
Filed under: Streaming by Linux Admin
No Comments »
June 12, 2007
If you are installing ffmpeg from the SVN and getting the following error log after running ./configure:
./configure
Unable to create and execute files in /tmp. Set the TMPDIR environment
variable to another directory and make sure that /tmp is not mounted
noexec.
Sanity test failed.
If you think configure made a mistake, make sure you are using the latest
version from SVN. If the latest version fails, report the problem to the
ffmpeg-devel@mplayerhq.hu mailing list or IRC #ffmpeg on irc.freenode.net.
Include the log file “config.err” produced by configure as this will help
solving the problem.
This means that your /tmp directory has noexec flag and you need to disable it for a while.
Check your /etc/fstab
and locate /tmp
It probably shows something similar below:
LABEL=/tmp /tmp ext3 defaults,noexec,nosuid 1 2
Remove noexec and it should be something like:
LABEL=/tmp /tmp ext3 defaults,nosuid 1 2
Issue
umount /tmp && mount /tmp
And you are set, proceed with the installation of ffmpeg.
If you are getting the following error after running umount and/or mount:
umount: /tmp: device is busy
Then some process is having a file handle open to /tmp directory. You will need to shutdown the daemon before issuing mount commands.
Filed under: Tips by Linux Admin
4 Comments »
June 5, 2007
For large WordPress blog owners we have some great news. Today, Linux Admin has launched pre-beta cluster technology hosting for WordPress blogs that require high reliability and availability.
Mr. J.Lejj, the CEO of LinuxAdmin: “Our technology incorporates load balancing and full failover front-ends and back-ends, thus, allowing big blog owners to concentrate more on their business — forget dealing with the current host for uptime and low latency problems. At this point, I am confident to say that our WordPress cluster technology hosting will be shortly available to public and currently, we are working with some quite large blog network owners to test our solution.”.
LinuxAdmin has been always offering quality services and we do not plan on stepping back.
Filed under: News by Linux Admin
2 Comments »