There are Five virtual consoles in Redhat enterprise Linux servers.
There are certain key combinations to be used to access the virtual console,it helps alot for troubleshooting machines.
The Key Combinations are as below:
ALT-F1 : to access installer in text mode.
ALT-F2: to access bash shell .
ALT-F3 to view log of installer.
ALT-F4: to view log of kernel messages.
ALT-F5 stdout of mke2fs and grub.
ALT-F7 : access installer in Graphical mode.
Cheerz.
@$H
Friday, July 31, 2009
Wednesday, July 29, 2009
Being Yourself...
I just went through this , one of my colleagues forwarded it to me after an hour long debate on topic what we call as "Living LIFE Being Yourself" ... he he .. was heavy for me though , I never prefer to be a part of any debate, the only thing I believe that makes life complete is if I have "my people" ( grrrr yea obssessive haan ;), thats wat some think though ) with me and spending time with them being myself, thats what I believe life is...
But still.. she managed to agree me to a point that people do change with new people, surroundings, with places they go and get used to it.. If you read this which is pasted in hindi, its a story of a guy who visited delhi , its cool, see how his experience goes... interesting though. ... People then start getting used to it...
Hope you like it..
Cheerz..
@$H
Monday, July 27, 2009
Creative Zen X-Fi 8GB
A long time plan to own my mp3 player, my options were as below:
- To use my cellphone for music : Naah , i own a HTC Touch, already use it alot for browsing, mails and chattin. The battery also would not support me in that cause. Rather I also believe that a cellphone shouldnt be used for music purposes to prevent the wear n tear of your device.
- The first name strikes every mind , Apple iPod... in my case, Give me a break !
Personal preference though, no offenses, it’s just that i don’t want to be limited to itunes etc to transfer and manage music on my player.
My requirements were :
1. Portable.. small.. sleek with max features possible.
2. Can be used as a pendrive, music transfer easy.
3. High Sound quality.
On doing some research, i found creative zen x-fi, it comes with a wlan model too… but asks for more money..
Creative has been a leader in the digital entertainment industry for PC and interner for quite a while now.. most of us also own the creative 2.1 speakers for PC too.. me too.. which has a top sound quality.. we all know.. and is quality for money.
X-fi means extreme fidelity which is an audio standard owned by creative , which truly makes a difference, you will experience the difference once you just use this device..
Using creative zen is extremely easy, and the quality.. the first word which will drop out of your mouth after listening to music on it will be .. WooooW… And its not only music, you can save your photographs in it and view it while travelling, slideshows etc, videos – it supports mp4, avi etc.
The earphones which comes with this powerhouse is also a creative earplug, which along would cost you about 20$ I guess , approx.
To see the details of this powerhouse click the below link
http://in.creative.com/products/product.asp?category=213&subcategory=214&product=17810
Now about the cost, dude creative products are seriously expensive in india, if you have some contacts in US, call them now !
I sent this requirement to a dear friend of mine (creative zen x-fi 8GB), who went to US for an assignment, and she also agreed that this was one of her best buy’s. I got this for 99$ , I also purchased the armband along with this player which I use while working out.
In India you will get this for about Rs.14,700 , so you can see the difference.
Hope this helps in deciding your next purchase .. ;)
Cheerz.. @$H
Thursday, July 16, 2009
3 Doors Down - Let Me Be Myself
See this video , premiere of "Let me be myself", a beautiful song by 3 Doors Down.
Tuesday, July 14, 2009
Ganglia across VLANs
As per my earlier article we did a default configuration of Ganglia on the network.
By default it works on Multicast, now if we have servers spread in different network segments / locations, this will not work.
To make this work we will have to use unicast for Ganglia configurations, for that follow the steps below:
On the Ganglia machines:
$ vi /etc/gmond.conf
1. Comment all entries of mcast and add an entry of host =in the udp_send_channel
/* Feel free to specify as many udp_send_channels as you like. Gmond
used to only support having a single channel */
udp_send_channel {
#mcast_join = 239.2.11.71
host = (server host)
port = 8649
}
/* You can specify as many udp_recv_channels as you like as well. */
udp_recv_channel {
#mcast_join = 239.2.11.71
port = 8649
#bind = 239.2.11.71
}
2. Restart the gmond service
/etc/init.d/gmond restart
(server host) = The host where Ganglia is hosted and which is collecting the data.
Now when you see the page on http://(server host)/ganglia
You will see the hosts coming up on the page.
Cheerz.
@$H
By default it works on Multicast, now if we have servers spread in different network segments / locations, this will not work.
To make this work we will have to use unicast for Ganglia configurations, for that follow the steps below:
On the Ganglia machines:
$ vi /etc/gmond.conf
1. Comment all entries of mcast and add an entry of host =
/* Feel free to specify as many udp_send_channels as you like. Gmond
used to only support having a single channel */
udp_send_channel {
#mcast_join = 239.2.11.71
host = (server host)
port = 8649
}
/* You can specify as many udp_recv_channels as you like as well. */
udp_recv_channel {
#mcast_join = 239.2.11.71
port = 8649
#bind = 239.2.11.71
}
2. Restart the gmond service
/etc/init.d/gmond restart
(server host) = The host where Ganglia is hosted and which is collecting the data.
Now when you see the page on http://(server host)/ganglia
You will see the hosts coming up on the page.
Cheerz.
@$H
Sunday, July 12, 2009
Migrating the default Database location of MySQL
There are some simple steps if you need to change the default location of the MySQL Database.
1. Create new data directory data for new data directory.
mkdir data
chown -R mysql:mysql data
2、Stop MySQL process
# service mysqld stop
Stopping MySQL: [ OK ]
ps -efgrep mysql to check
3、Copy /var/lib/mysql to /home/data
cp -rfp /var/lib/mysql/* /home/data
4、Backup old /etc/my.cnf to /etc/my.conf.bak
5、Edit /etc/my.cnf
find line like bellow
#datadir=/var/lib/mysql
datadir=/data
6、Backup script /etc/init.d/mysqld to /etc/init.d/mysqld.bak and edit
# vi /etc/init.d/mysqld
#get_mysql_option mysqld datadir "/var/lib/mysql"
get_mysql_option mysqld datadir "/data"
7. Relink : ln -s /home/data /var/lib/mysql
8. Start mysqld servicce
# service mysqld start
Starting MySQL: [ OK ]
Cheerz.
@$H
1. Create new data directory data for new data directory.
mkdir data
chown -R mysql:mysql data
2、Stop MySQL process
# service mysqld stop
Stopping MySQL: [ OK ]
ps -efgrep mysql to check
3、Copy /var/lib/mysql to /home/data
cp -rfp /var/lib/mysql/* /home/data
4、Backup old /etc/my.cnf to /etc/my.conf.bak
5、Edit /etc/my.cnf
find line like bellow
#datadir=/var/lib/mysql
datadir=/data
6、Backup script /etc/init.d/mysqld to /etc/init.d/mysqld.bak and edit
# vi /etc/init.d/mysqld
#get_mysql_option mysqld datadir "/var/lib/mysql"
get_mysql_option mysqld datadir "/data"
7. Relink : ln -s /home/data /var/lib/mysql
8. Start mysqld servicce
# service mysqld start
Starting MySQL: [ OK ]
Cheerz.
@$H
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