Sinan Polat


DirectAdmin: Unable to determine Usertype user.conf needs to be repaired

I jut have installed DirectAdmin, but could not log in to DirectAdmin, I got the following error message: Unable to determine Usertype user.conf needs to be repaired I quickly solved this by running: # cd /usr/local/directadmin # ./directadmin i If this doesn’t solve the problem, let me know and I will assist you.

Plesk: 500 – Internal Server Error

Probably you just have tried to login to Plesk and got the following message: 500 – Internal Server Error The easiest way is to check the log file of Plesk: # cat /var/log/sw-cp-server/error_log If you couldn’t find any strange messages (except the SSL warnings, those are known) then you can try the following, it will […]

Plesk FTP not working: 421 Service not available, remote server has closed connection

When you have Plesk running on your server and FTP is not working because of the following error message: 421 Service not available, remote server has closed connection Then probably the hostname is not set up correctly. Please run the following command, you should get ‘unknown host’: # ping `hostname` If this is case, please […]

Dell server: limited to 256MB memory

Today I replaced a server with a Dell Poweredge 860, after installing Debian Squeeze and booting the server I noticed the server has only 256MB system memory. After some Googling I found out that ‘OS Install Mode‘ was set to On. Setting this mode to ‘Off’ in the BIOS solved the problem.

DirectAdmin and Exim problems: retry time not reached for any host

It took some time, but finally I found a workaround for this problem. Exim was keeping the mails in his queue for an unknown reason for me. In the log file (/var/log/exim/mainlog) I saw the following error message: retry time not reached for any host I don’t know what it means or why the message […]

fix error while loading shared libraries libstdc

Sorry, this article is not available anymore, it got deleted after a server crash. Please feel free to contact me at if you need assistance.

MySQL is not starting/working on Debian 6 + DirectAdmin

I just delivered a brand new server with Debian Squeeze + DirectAdmin, I have got no errors while installing DirectAdmin, but after the installation I noticed that mysql was not running. After some debugging I found the following error: 110530 22:59:40 mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/data /usr/local/mysql/bin/mysqld: error while loading shared libraries: […]

Dell R200: PCIe Training Error: Embedded I/O Bridge device 1

I work with a lot of Dell and HP servers, since a while I see the following error message on Dell R200 servers: PCIe Training Error: Embedded I/O Bridge device 1 It is an known Dell hardware problem, the PCI slot where the risercard is plugged into is malfunctioning, removing the riser card or any […]

Cannot create database with DirectAdmin

I see a lot of DirectAdmin users who cannot create a mysql database. When you see the following error, I am sure I can help you out: Error connecting to MySQL: Access denied for user ‘da_admin’@’localhost’ (using password: YES) First make sure your mysql root password is working, you can test it out using the […]

Monitoring LSI RAID adapter with mpt-status

I have a few HP and Dell servers I manage that use LSI RAID controllers. To ensure remotely that a hard drive is not failed I was in need of a tool. I found the mpt-status utility, which is a tool for monitoring LSI RAID controllers. However, the installation took some time as I got […]