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| How To Put Multi-Line Comment in Shell Script Posted: 31 Aug 2021 02:25 AM PDT {Updated} This page describes various methods developers and sysadmin can use to put a multi-Line comment in shell script (bash/ksh) running on a Unix or Linux box. The post How To Put Multi-Line Comment in Shell Script appeared first on nixCraft. |
| How to set up Mariadb Galera cluster on Ubuntu or Debian Linux Posted: 30 Aug 2021 03:57 AM PDT {nixCraft Patreon supporters content} This guide explains how to set up MariaDB high-availability cluster for the database using the Galera library, which provides a virtual mater-to-master three-node cluster running on Debian or Ubuntu Linux. Software and hardware requirementsMinimum three VMs running at cloud providers or bare metal servers. Always keep an ODD number of servers. Ubuntu 20.04 or Debian 10/11 Linux LTS release. The instructions will not work on other operating systems such as FreeBSD or other Linux distros such as RHEL/SUSE due to different tools (e.g., firewall). However, one can always adopt it. MariaDB server with Galera library on each VM. The cluster is made of two components (replication engine called Galera and database called MariaDB). The MariaDB cluster is protected using password-based authentication, TLS, VLAN/VPC, and firewall for security and privacy. The cluster will not accept any traffic from the Internet or public interfaces at all. This guide will cover the following topics:The post How to set up Mariadb Galera cluster on Ubuntu or Debian Linux appeared first on Opensource Flare✨. |
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