Tuesday 24 December 2013

Solution to We couldn't complete your purchase using card MasterCard error in PayPal

If you are getting link a new debit or credit card to make an instant payment error or we couldn't complete your purchase using card MasterCard error while paying through paypal by using Debit Card means actually there is Problem with card or You are Paying in Wrong Currency means order in Dollar you are paying in Rupees. Check below Video to complete Solution.

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Friday 20 December 2013

Solution to change Network device Name (eth0) in CentOS, Fedora Linux

Open the /etc/udeve/rules.d/70-persistent-net.rules and change NAME as your require.

cat /etc/udev/rules.d/70-persistent-net.rules 
# This file was automatically generated by the /lib/udev/write_net_rules
# program, run by the persistent-net-generator.rules rules file.
# You can modify it, as long as you keep each rule on a single
# line, and change only the value of the NAME= key.

# PCI device 0x15ad:0x07b0 (vmxnet3)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:50:56:b6:64:c5", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"

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Tuesday 17 December 2013

Rocks Cluster : untrusted X11 Warning Message when SSH X11 compute Nodes

When we login ssh with X11 from rocks  master node to computer node it doesn't allow X11 to forward as :

$ ssh node10 -X
Warning: untrusted X11 forwarding setup failed: xauth key data not generated
Warning: No xauth data; using fake authentication data for X11 forwarding.
Last login: Tue Dec 17 20:34:52 2013 from test.rocks.com
Rocks Compute Node
Rocks 6.1 (Emerald Boa)
Profile built 14:32 21-Nov-2013

For that In Rocks Master node edit /etc/ssh/ssh_config add following line :

        ForwardX11Trusted       yes

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Monday 16 December 2013

Installation of GCC 4.8.2 compilers on CentOS 6 x86_64

Before Installing GCC 4.8.2  get packages and pre-requisties :

GCC 4.8.2 http://mirrors.ispros.com.bd/gnu/gcc/gcc-4.8.2/gcc-4.8.2.tar.bz2

Pre-requesties :

MPC  http://www.multiprecision.org/mpc/download/mpc-1.0.1.tar.gz
MPFR http://www.mpfr.org/mpfr-current/mpfr-3.1.2.tar.bz2
GMP https://gmplib.org/download/gmp/gmp-5.1.3.tar.bz2
ISL ftp://ftp.irisa.fr/pub/mirrors/gcc.gnu.org/gcc/infrastructure/isl-0.11.1.tar.bz2
CLOOG ftp://ftp.irisa.fr/pub/mirrors/gcc.gnu.org/gcc/infrastructure/cloog-0.18.0.tar.gz

Install Development Tools :

yum groupinstall "Development tools"

Install 32 bit library support :

yum install glibc-devel.i686 glibc-i686

First extract gcc-4.8.2.tar.bz2 :

tar -jxvf gcc-4.8.2.tar.bz2
cd gcc-4.8.2

Now got that extracted gcc folder extract pre-requesties and rename extracted folders to their names as simillary:

tar -zxvf ../mpc-1.0.1.tar.gz
tar -jxvf ../mpfr-3.1.2.tar.bz2
mv mpc-1.0.1  mpc
mv mpfr-3.1.2  mpfr

Now configure GCC :

./configure --prefix=/opt/gcc-4.8.2/
make -k check
make install

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Here We Write The Problems we face at different situations and Solutions to those problems.