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I want to share my web server DocumentRoot /var/www/html/ across 2 Apache web server. Both of my web servers are behind load balanced reverse proxy powered by Nginx. How do I setup and install GlusterFS (“distributed storage”) which is a scalable network filesystem on Ubuntu Linux 16.04 LTS server?
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How to make disk image with dd on Linux or Unix

How do I create disk image using dd command? How do I perform disk cloning from a live Linux cd for backup or recovery purpose?
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How to see PCI devices info on CentOS 7 and RedHat Enterprise Linux 7

I wanted to see PCI devices information on my CentOS/RHEL 7 box. But, I’m getting an error that read as, “-bash: lspci: command not found”. How do I solve this problem and see PCI devices information on CentOS/RHEL 7?
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How to see CPU temperature on CentOS 7 and RedHat Enterprise Linux 7

I am a new sysadmin of CentOS 7 server. How do I get my CPU temperature Information on CentOS Linux 7 or Red Hat Enterprise Linux 7 server?
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How to configure pfSense as multi wan (DUAL WAN) load balance failover router

How do I setup a multi-WAN load balancing and failover on pfSense router with two ADSL or cable or leased-line or FTTH (Fiber to the home) connections?
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How to find out Raspberry Pi GPU and ARM CPU temperature on Linux

I am using a Raspberry PI 2/3 credit size computer. How do I find out my GPU or ARM CPU temperature from Linux operating system command line option?
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FreeBSD find CPU (processor) temperature command

I‘m a new FreeBSD unix user. How do I get the temperature of an Intel or AMD processor (CPU) in FreeBSD using command line option? Is there a command line option for determine CPU temperature on FreeBSD Unix operating system?
temperature in FreeBSD
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How To Read CPUID Instruction For Each CPU on Linux With x86info and cpuid Commands

Is there a CPU-Z like a freeware/open source software that detects the central processing unit (CPU) of a modern personal computer in Linux operating system? How can I get detailed information about the CPU(s) gathered from the CPUID instruction, including the exact model of CPU(s) on Linux operating system?
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How To Find Hard Disk SATA Link Speed On FreeBSD

I know how to find out my SATA link speed such as 3.0 or 6.0 Gbps on Linux operating system. How do I find out my SATA link speed on FreeBSD Unix operating system? How do I make sure my sata hard disk is working at 6Gbps speed and how do I verify this on a FreeBSD server hardware?
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How To FreeNAS Install And Configure APC UPS For Power Management

I have an APC SUA1500i smart ups, and want to configure power option from my FreeNAS using this ups. How can I install an appropriate APC UPS USB driver on my FreeNAS server, and use it to control power options?
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