Log Rotation for a Good Night’s Sleep
It’s one of the dumbest things you can ever get called out in the middle of the night for – because a filesystem has filled up. Dumb, because it’s preventable and because you shouldn’t be the one doing...
View ArticleHugepages
Normally the Operating System uses a 4kb page size for memory. This means that the physical memory in the machine is broken down into 4kb chunks, a page table is then created to map this memory from...
View ArticleVirtualization With Xen Hypervisor On CentOS 5.8, Part 1
Several years ago I was hired as a Linux System Administrator to consolidate several network services into a Xen virtual environment. Even though Xen was already the incorporated virtual machine...
View ArticleVirtualization With Xen Hypervisor On CentOS 5.8, Part 2
In Part 1 of this series, I delved into the installation of the dom0 and domU. In this, Part 2, I deal with data migration from a standalone system (the system being migrated into the virtual...
View ArticleTrimming the excess from a virtual machine
The best practice for maintaining a Linux server is to run the smallest optimal set of software. That is, there should be nothing running that isn’t being used, and ideally nothing should be installed...
View ArticleSetting up a Local Private Yum Repository (LPYR) On CentOS – PART1
Deploying firmware and package updates may pose significant challenges on system administrators (SAs). These challenges can even become cumbersome depending on the size of a network or the number of...
View ArticleSetting up a Local Private Yum Repository (LPYR) On CentOS – PART2
In the first article of these series “Setting up a LPYR PART1”, I essentially delved with how to setup a LPYR. That is I provided you with clear and comprehensive 11 steps that you may follow and have...
View ArticleOptimizing and Building Apache Web-Server On CentOS/RedHat/Fedora.
Apache Web-Server is one of the most widely used web-servers around the globe. Thus, the Internet is overloaded with countless of techniques regarding deploying and configuring this world class...
View ArticleOPTIMIZE & INSTALL OPENSSL
In the early 90s most of the inter-network communications done by Internet protocols such as IMAP, SMTP, HTTP, FTP, LDAP, SNMP and POP was unencrypted. This basically means that even though...
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