Swap is a space on a disk that is used when the amount of physical RAM memory is full. When a Linux system runs out of RAM, inactive pages are…
rhel
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Linux
How to Reduce / Shrink the Size of a LVM Partition Formatted with XFS Filesystem?
by Lotfi Waderni January 30, 2017Issue: – How to reduce the size a partition formatted with xfs filesystem? – How can I reduce the size of a LVM partition formatted with xfs filesystem? It is…
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Centos/RedhatLinux
How To Reduce An LVM Swap Partition On CentOS 7 /RHEL 7
by Lotfi Waderni January 23, 2017In this guide tutorial, we will cover how to reduce an lVM swap partition on a CentOS 7 / RHEL 7 server. Task: Reduce the LVM Swap partition /dev/vg1/swap from…
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Centos/RedhatLinux
RHCSA Exam Objectives: How to Start, Stop, and Check the Status of Network Services
by Lotfi Waderni January 22, 2017RHCSA Exam Objectives: Start, stop, and check the status of network services In this lesson we are going to learn how to start, stop, enable, disable and check the status…
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Centos/RedhatDatabasesLinux
How To Install PostgreSQL 9.6 on CentOS 7 / RHEL 7
by Lotfi Waderni January 17, 2017Step 1: Add the PostgreSQL 9.6 Repository # sudo yum install https://download.postgresql.org/pub/repos/yum/reporpms/EL-7-x86_64/pgdg-redhat-repo-latest.noarch.rpm -y Step 2: Install PostgreSQL 9.6 – To install PostgreSQL 9.6 just run the below command: # sudo…
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Centos/RedhatDatabasesLinux
Installing and Configuring Percona XtraDB Cluster High Availability On CentOS 7 / RHEL 7 – Part3
by Lotfi Waderni January 13, 2017Choosing a high-availability solution for MySQL to prevent downtime and data losing, is really one of the important subjects for an IT System Admin to handle. Today, we are going…
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Centos/RedhatDatabasesLinux
How to Configure Holland to Backup MariaDB on CentOS 7 / RHEL 7
by Lotfi Waderni January 4, 2017Holland is an open source backup framework written in Python. It can be used to back up several different database types using a number of methods based on the plugins…
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Centos/RedhatLinux
How to Install and Configure Lsyncd on CentOS 7 / RHEL 7
by Lotfi Waderni December 25, 2016Lsyncd stands for “Live Syncing Daemon“, lsyncd is used to sync or replicate files and directories locally and remotely after a specific time of interval. Lsyncd uses Rsync and ssh…