There are some activities on the CentOS 7 side: after a CentOS 7 (1503) alpha candidate for AArch64, there is now a CentOS 7 (1503) beta candidate for AArch64 platforms, a CentOS 7 (1503) beta candidate for i686 platforms has…
Many people don’t figure out why a Systemd service can be masked. They understand the need to enable it at boot and start it but why masking it? Back to basics, a Systemd service can be: manually started with the…
When a service doesn’t run as you would like, when you want to change its default configuration, Systemd offers you several options. Firstly, you can copy the standard unit file from the /usr/lib/systemd/system directory into the /etc/systemd/system directory and then…
To a non expert, Firewalld can sometimes appear a little bit strange and confusing. Let’s take an example: you just set up an Apache webserver and want to configure a https virtual host. Because it’s a test, you want to…
When working with services in RHEL 7, you can check if a service is currently running with the is-active option or enabled at boot time with the is-enabled option. But it is more difficult to know if the unit file…
ISCSI configuration is a very tricky topic of the RHCE 7 exam. If a RHCE candidate takes the exam without previous iScsi experience, he will fail! Man pages are not enough to understand the intricacy of this subject and there…
Today, Centos 7 (1503) aka CentOS 7.1 has just been released. The distribution can now be downloaded from the CentOS website. The Release Notes explain the major changes: As of March 2015 ABRT (>= 2.1.11-19.el7.centos.0.1) can report bugs directly to…
If you have to migrate a HTTPD server from RHEL 6/CentOS 6 to RHEL 7/CentOS 7, you should be careful. The default HTTPD SELinux policy has changed and very limited information has been provided about it: many free tutorials available…
Although keeping a system tidy is not an exam objective, it’s a nice skill to have. Three tutorials can help you to progress in this domain: How to keep your system clean: this tutorial teaches you how to better manage…
Today, Red Hat announces the official release of RHEL 7.1. To know more about this new version you can read a summary of the RHEL 7.1 changes or the RHEL 7.1 Release Notes. In addition, Red Hat is also releasing…
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