OS

Fixed “unknown filesystem type ‘LVM2_member’ ” on Centos

E:When trying to mount a physical disk from CentOS , I got this problem “unknown filesystem type “LVM2_member”. S: After a while, I find out the solution. First of all, you have to install LVM2 into your system through this command: yum install lvm2   } else { Incoming search […]

RHN yum command: Unable to read consumer identity Warning and Solution

Iam using yum update command with RHN to upgrade packages installed on my server, but getting the following warning on screen : yum update -y Loaded plugins: product-id, protectbase, rhnplugin, security, subscription manager: Updating certificate-based repositories. Unable to read consumer identity 0 packages excluded due to repository protections Setting up […]

Screen: Cannot open your terminal ‘/dev/pts/0′ – please check

Screen is used to run interactive programs in the backgroud while we can logout from the server. We can also re-attach to the existing screen session to check the progress of the running programs. Sometimes, server admin need to run commands under a different user so they “su” to another […]

[solved]configure: error: OpenSSL Crypto headers not found

Problem you face right now : configure: error: OpenSSL Crypto headers not found This way is to fix the problem : ./configure –with-ssl-headers=/usr/local/ssl/include/ –disable-crypto –disable-lzo or apt-get install libmatrixssl1.7 libmatrixssl1.7-dev libmatrixssl1.7-doc libssl0.9.7 libcrypto++7 libcrypt-openssl-dsa-perl libssl-dev I Had the same error and installed the DEV packages and it worked….. # apt-get […]

Centralized RSYSLOG Server Monitoring

This tutorial provides step-by-step instructions on how to install RSYSLOG server on Debian 6 (Squeeze) and how to send syslog data to it from multiple client servers. We will also show how to install an Apache webserver and a MySQL database server to gather the syslog data and how to […]

Postfix/Dovecot Authentication Against Active Directory On CentOS 5.x

This document describes how to integrate Postfix/Dovecot with Microsoft Active Directory on CentOS 5.x, and you can manage mail users in Microsoft Active Directory. You will learn how to enable Postfix to look up email addresses in Active Directory and how to enable Dovecot to authenticate against Microsoft Active Directory. […]

Ubuntu: PHP libphp5.so missing: cannot open shared object file

If Apache2 service fails to start with a “libphp5.so: cannot open shared object file” message, it indicates that libphp5.so is missing on your Ubuntu server. Apache2 has detected a syntax error in your configuration files: Syntax error on line 1 of /etc/apache2/mods-enabled/php5.load: Cannot load /usr/lib/apache2/modules/libphp5.so into server: /usr/lib/apache2/modules/libphp5.so: cannot open […]

error event.h: No such file or directory

While compiling a package say, Greensql you may end up with the ?event.h: No such file or directory?  error message as follows: # make g++ -g -Wno-deprecated -Wall -I/usr/local/include/   -c -o main.o main.cpp main.cpp:23:19: error: event.h: No such file or directory It indicates that the required ?libevent? package is missing […]