June 23rd, 2009
SP2 Installation
I switched one server from Fedora Core to Ubuntu yesterday. Shibboleth 2 SP
installation is a bit more tricky under Ubuntu than Fedora Core. The packages
are not available in the Ubuntu repositories, but Satya's blog serves a working
howto.
failed to bind to socket
Shibboleth seemed to be working well after installation, but today it was
down dumping
2009–06–23 12:51:53 ERROR Shibboleth.Listener : socket call resulted in
error (2): no message 2009–06–23 12:51:53 CRIT Shibboleth.Listener : failed
to bind to socket.
into the /var/log/shibboleth/shibd.log. I luckily found a
solution in quite a short time. The problem was that the shibd was trying to
create socket in /var/run/shibboleth directory, which did not
exist. Creating it once does not help because Ubuntu removes content of
/var/run/ at every reboot. To fix it this has to be added
to /etc/init.d/shibd
if [ ! -e /var/run/shibboleth ]
then
mkdir /var/run/shibboleth
fi
Tags: shibboleth, ubuntu
Posted in Linux | No Comments »
May 11th, 2009
If you are getting
SQL30082N Security processing failed with reason „15“ („PROCESSING
FAILURE“)
when connecting to the db2 database using db2 CONNECT TO dbname USER
username or
Connection authorization failure occurred. Reason: Local security service
non-retryable error. ERRORCODE=-4214, SQLSTATE=28000
when connecting remotely (via JDBC driver) read on. I finally found what
causes this error and a solution!
Environment
- OS: Fedora Core 10 64bit
- DB2: version 9.5, Express edition
Problem
Tho whole problem is in the format of the passwords in
/etc/shadow. DB2 doesn't seem to like the passwords generated when
changing password using the standard passwd command. In Fedora Core
10 the password is hashed using sha-512 and the entry for user
username looks like:
username:$6$efWWOYRY$z5DNL1kLQU4AmPkFBqbQh6LOh0Qjxq654dS9jE46iPNp8Zces8I4bP8GLZ3G3RWLo/6o.LYOV5neYSKxXbL.M1:14375:0:99999:7:::
Solution
DB2 works fine with passwords hashed with standard crypt function. Password
in the desired format can be obtained by calling openssl passwd
desiredPassword. The output of openssl can be passed to usermod
--password The complete command to change user's password then
look like:
usermod --password `openssl passwd desiredPassword`
usename
Bigger image
I tried to hand-edit /etc/shadow and insert salted MD5 password, which can
be obtained by openssl passwd -1 desiredPassword and the connection
was sucessfuly established. To sum it up, the whole problem in the end seems to
be that DB2 doesn't like SHA-512 hashes in /etc/shadow. On the other hand, it
works fine with hashes generated by crypt and MD5.
Changing default algorithm in Fedora Core
Fedora Core contains a nice tool authconfig. To change the
default hashing algorithm to MD5 run
authconfig –passalgo md5 –update
All the passwords inserted in the password database will be stored in MD5
from now on. It will, of course, not change the hashes of the current
passwords.
Tags: DB2, problem
Posted in DB2 | 1 Comment »
October 21st, 2008
I got 2 errors while installing DB2 Express that comes with Rational Team
Concert. Two libraries were missing:
libstdc++.so.5
ERROR:
The required library file libstdc++.so.5 is not found on the system.
Solution: (thanks http://tldp.org/…fedora6.html)
yum -y install compat-libstdc++-33
libaio.so.1
ERROR:
The required library file libaio++.so.1 is not found on the system.
Solution:
yum -y install libaio
Read the rest of this entry »
Tags: DB2, jazz, Rational Team Concert
Posted in Rational Team Concert | No Comments »
June 28th, 2008
Today I ran apt-get update && apt-get dist-upgrade on
my Debian Lenny installed on WD MyBook as I ussually do. It removed VIM (I let
it as I thought it was just replaced by another package). I tried to run
vim after the upgrade but it was really uninstalled. Trying to
install it again by apt-get install I got
The following packages have unmet dependencies:
vim: Depends: vim-runtime (= 1:7.1.293-3)
but 1:7.1.293-3+lenny1 is to be installed
E: Broken packages
I tried to uninstall vim-runtime. It didn't help. I don't have time to
solve it now so I can't give a solution. If you encountered the same problem
and have a solution to this problem, I'd really appretiate your comment.
It's quite sad that Debian repository is not consistent and one gets errors
using apt-get.
Tags: problem, Vim
Posted in Linux, WD MyBook | No Comments »
April 5th, 2008
Today I wanted to upgrade packages at my WD MyBook running Debian Lenny. My
notebook was being backed up at the time so I thought that it would be a good
idea to run apt-get with a lower priority, as the the samba process eats almost
all MyBook resources.
I typed nice apt-get update && nice apt-get upgrade. It
did what I wanted it to do, but hour later I found that apache and samba were
running with low priority. This is because the services were restarted by
apt-get.
Having been reniced, all the services are running OK again.
Tags: apt-get, nice
Posted in Linux, WD MyBook | 2 Comments »
January 19th, 2008
27th January Update: as somebody has pointed via
email (thanks for that), the function I gave only worked for positive numbers.
This is the solution he offered (altered a bit not to give warnings so that you
can cut&paste ):
#include <cmath>
int function round(double num) {
char sign = static_cast<char>(num/fabs(num));
return static_cast<int>(sign* (fabs(num)+ 0.5));
}
Actually, the solution I gave first (and then suddenly changed it to the one
that only works for positive number…) worked perfectly with both positive and
negative too. This is it:
#include <cmath>
int function round(double num) {
return static_cast<int>(floor(num+0.5));
}
Read the rest of this entry »
Posted in Programming | No Comments »
January 12th, 2008
System upgrade
When things break
Tags: WD MyBook
Posted in WD MyBook | 1 Comment »
January 10th, 2008
I have recently installed Debian Lenny to my Western Digital My Book. All
thanks to great guide at Mario
Pascucci's site (big thanks!)
A commented version with some other details can be found at Hacking
WD MyBook World Ed site
The system installed is full-fledged version of testing version (called
lenny) of Debian, so one can use use apt-get to install packages the same way as
at PC (providing you use a packages
mirror, that serves arm architecture). Having successfully installed FTP
(vsftpd), htop, gcc, and others, I also wanted to install Samba (as the most
important part of such a device).
I was fighting with Samba at MyBook for more than two days (and nights). The
problem was that it didn't want to list the shares at the server. The problem in
the end was that there is a bug in Debian
samba package version 3.0.28–1 – current testing (lenny) version, which has
something to do with arm compiler – if you download Samba source code and
compile it yourself without additional parameter -O0, the result will be the
same as with the samba Debian package.
The bug has already been fixed in 3.0.28–2. This version is not in testing
(lenny) yet, but you can manually download the current versions from
To install it do as root:
cd /tmp
wget http://http.us.debian.org/debian/pool/main/s/samba/samba-common_3.0.28-2_arm.deb
wget http://http.us.debian.org/debian/pool/main/s/samba/samba_3.0.28-2_arm.deb
dpkg --install samba-common_3.0.28-2_arm.deb
dpkg --install samba_3.0.28-2_arm.deb
rm samba-common_3.0.28-2_arm.deb samba_3.0.28-2_arm.deb
Another way is to add sid deb sources to you
/etc/apt/sources.list
I hope that this can make somebody's fight shorter than two days…
Tags: WD MyBook
Posted in WD MyBook | 4 Comments »
November 11th, 2007
There are few guides on how to dismantle Western Digital My Book World
Edition (500 GB) available online. (see here
or here).
Just for those who have the new model (white with rubber around it):
- There is no screw in the cover.
- You need to remove the rubber before you try to slide the cover.
Posted in WD MyBook | 5 Comments »
