Yesterday, Red Hat published a post concerning RHCSA & RHCE 6 exams availability. According to this post, candidates have one year to take RHCSA 6 or RHCE 6 exams as Individual Exam Sessions under the condition that they purchase the…
If you plan to take the RHCSA 6 or RHCE 6 exams, you’ve got to hurry because these exams will be withdrawn in two to three weeks. As RHCSA 7 is not too different from RHCSA 6, it will not…
Since RHEL 6, a transaction history has been added to the yum command. This feature allows you to precisely know which packages have been installed on a server and in which order. In addition, you can undo or redo any…
If you need to configure a server for a specific task (for SAP, with reduced network latency, for maximum throughput, as a desktop, as a virtual host, etc), a dedicated tool already existed in RHEL 6: tuned-adm. This tool still…
In one of his latest videos Sander van Vugt shows us that some SELinux information is not available without some tricky operations. Actually, after a standard RHEL 7 / CentOS 7 installation, only basic SELinux man pages are installed. All…
Yesterday, Red Hat announced the official release of RHEL 6.6. This minor version brings several improvements: The scap-security-guide package has been added providing a convenient and reliable way to verify system compliance on a regular basis, The KeepAlived and HAProxy…
Today, Scientific Linux 7.0 is officially released. In the Scientific Linux 7.0 release notes, two points need attention: The default Scientific Linux 7 installation provides automatic updates via the yum-cron package: because this distribution is often installed by graduate students, it has been decided…
Today, Dell just released its KVM Virtualization made easy for RHEL 7. To anybody interested in building a KVM lab, this is a must-read. In this white paper, Jose De la Rosa from Dell explains all the steps involved in…
The I/O scheduler policy has changed with Red Hat Enterprise Linux 7. The default I/O Scheduler is now CFQ for SATA drives and Deadline for everything else. Indeed, for faster storage than SATA drives, Deadline outperforms CFQ, giving a performance increase without…
One year ago I decided to start this website. One of the reasons explaining this move was to see how it was difficult to complete some tasks like LDAP client configuration without almost any tutorial to set up the server…
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