Red Hat Enterprise Linux

ยปTag:Red Hat Enterprise Linux

How to Install Let’s Encrypt in CentOS / RHEL / Fedora / FreeBSD / OpenBSD / Ubuntu / Linux

Let's Encrypt is a free, automated, and open certificate authority (CA) that provides Domain Validated (DV) certificates essential for SSL, which enables the HTTPS secure connection that encrypts data transfer. . The DV certificate verifies that you [...]

ABRT ImportError: No Module Named argparse Crash Error

Large number of error emails is sent by ABRT Daemon to web server's administrator, and system log is filled with the following message: [abrt] a crash has been detected again abrt_version: 2.0.8 cmdline: /usr/bin/python /usr/libexec/abrt-action-generate-machine-id -o /var/spool/abrt/pyhook-2015-08-06-07:11:17-55377/machineid [...]

By | November 20th, 2015|Categories: Linux|Tags: , , , |2 Comments

Install Munin Tracking & Monitoring System (RedHat/CentOS/Ubuntu/SUSE)

Munin Monitoring System is one of the popular computer system, network and infrastructure monitoring tool. With Munin, real-time information about the servers, applications, services, SANs, network and many more resources is available in graphs through a web [...]

Update & Add CA Certificates Bundle in RedHat & CentOS

Red Hat Enterprise Linux (RHEL), CentOS, Fedora, Scientific Linux and other Linux distributions derived from RHEL provides the system-default legacy classic CA certificate trust bundle Mozilla root CA list, where they have classic file names and are [...]

List All Packages Installed by a Specific Repo in CentOS / RedHat with YUM

Red Hat Enterprise Linux (RHEL), Fedora, CentOS and Scientific Linux allows administrators to add and enable multiple repositories (repos) to install software packages that are not included in the default base and updates repositories. Over time, the [...]

Cannot Retrieve Metalink for Repository: EPEL

When using yum to install or update software packages through "yum install" or "yum update" commands, the following stop error occurred: Loaded plugins: fastestmirror, security Loading mirror speeds from cached hostfile Error: Cannot retrieve metalink for repository: [...]

Create & Migrate Existing Working RedHat / CentOS System to RAID 1 / RAID 10

Linux system has built-in support for software RAID, through MD devices aka Linux Software RAID. Most Linux distributions such as Red Hat Enterprise Linux (RHEL) and CentOS allows you to easily set up RAID arrays while installing [...]

By | January 27th, 2015|Categories: Linux|Tags: , , , , , |7 Comments

Install DDclient Dynamic DNS (DDNS) Update Client in CentOS

DDclient is a Perl-based DDNS client used to update dynamic DNS records for domains. DDClient, most commonly used in Linux, Unix and FreeBSD, has the same function with DNS-O-Matic in Windows platform. DDClient supports multiple DDNS services [...]

By | January 22nd, 2015|Categories: Domains & Hosting|Tags: , , , , |1 Comment

MariaDB: Webmin MySQL Startup Script /etc/rc.d/init.d/mysqld Was Not Found

MariaDB, the enhanced in-place upgrade of MySQL database management system, is getting more popular each passing day. We decide to upgrade from MySQL, which comes preinstalled in CentOS, to MariaDB 5.5, and subsequently to MariaDB 10, the [...]

By | January 9th, 2015|Categories: Databases|Tags: , , , , , , , |0 Comments

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