Solving error while loading shared libraries: libmpi_f77.so.0

If you encontered this error "error while loading shared libraries: libmpi_f77.so.0: cannot open shared object file: No such file or directory".

This is due to missing /usr/local/lib files which are not accessible by the compute nodes. After you have made the libraries available, you may have to add /usr/local/lib to your LD_LIBRARY_PATH environment


You should be able to eliminate the error.

Green Data Center and Structural Cabling by IBM

YouTube Training from IBM done at Ngee Ann Polytechnic

1. Green Data Centre Overview
2. Green Data Centre Containment Design Structural Cabling
3. IBM Scalable Modular Data Center (SMDC)

Using Yum to install Nagios 3 for CentOS 5.4

I was trying to install Nagios 3.x for CentOS 5.4 but only nagios 2.x is surface. You must make sure you install the right repositories for CentOS to get nagios 3.x. To install Nagios 3.x, you will need to install RPMForge first. If you install EPEL only, you might only get nagios 2.x

Force fsck on the next reboot

fsck is used for checking and repairing Linux file system. To force a fsck after a reboot, do the following

# shutdown -rF now

(where F - Force fsck on reboot)

ClearOS - A Linux Server alterntive for Small and Medium Size Enterprise

ClearOS from Cloud Foundation is a powerful network and gateway server designed for small organizations and distributed environments.It is based on CentOS Linux

It has a wide arrays of applications that really helps the Small and Medium Enterprises. Some of the features taken from the ClearOS are listed here.

1. Directory Features

• Integrated LDAP for User and Group Management
• User Security Certificate Manager

2. Network Features

• Multi-WAN
• VPN - PPTP, IPsec, OpenVPN
• DMZ and 1-to-1 NAT
• Stateful Firewall
• Local DHCP and DNS Servers
  

3. Gateway Features

• Antimalware - Antivirus, Antiphishing, Antispyware
• Antispam
• Bandwidth Management
• Intrusion Protection, Intrusion Prevention, Intrusion Detection
• Protocol Filtering including Peer-to-Peer Detection
• Content Filter
• Web Proxy
• Access Control
  

4. Server Features

• Windows Networking with PDC Support
• File and Print Services
• Flexshares
• Groupware with Outlook Connector
• Mail Server - POP, IMAP, SMTP, Webmail, Retrieval
• Mail Filtering - Antispam, Antimalware, Greylisting, Quarantine
• Mail Archiving
• Database with MySQL
• Web Server with PHP Support