CentOS related tutorial/FAQ

Linux find NVMe SSD temperature using command line

last updated October 14, 2019 in CentOS, Debian / Ubuntu, Hardware, Linux, RedHat and Friends, Storage, Suse

How do I find NVMe SSD temperature using Linux command line options?

Set Up a Basic Iptables Firewall on Amazon Linux AMI

last updated October 10, 2019 in Amazon Cloud Computing, CentOS, Iptables, Linux, Security

How do I set up a basic iptables firewall on Amazon Linux AMI running on EC2 or Lightsail instance?

Amazon Linux AMI install mysql client programs for RDS

last updated October 9, 2019 in Amazon Cloud Computing, CentOS, MySQL, Package Management

How do I install mysql command for management Amazon RDS or Managed Databases for Amazon Lightsail on Amazon Linux AMI?

Apache with Let’s Encrypt Certificates on CentOS 8

last updated October 2, 2019 in Apache, CentOS, Linux, Security

I read that Let’s Encrypt is a free, automated, and open certificate for web server and other usages. How do I secure Apache with Let’s Encrypt Certificates on CentOS 8?

How to install whois on RHEL 8 / CentOS 8

last updated October 1, 2019 in CentOS, Linux, Package Management, RedHat and Friends

I deployed RHEL 8 in the cloud server. However, I am unable to find the whois command on my newly created RHEL 8 Linux server. It says ‘-bash: whois: command not found‘ I tried yum install whois, but it failed too. How do I install whois command on RHEL/CentOS 8 Linux using the command line?

How To Install MariaDB on CentOS 8

last updated October 1, 2019 in CentOS, Linux

I am a new to MariaDB server and CentOS 8 sysadmin. How do I install MariaDB on CentOS 8 Linux server using the yum command?

CentOS 8 dig command not found – How to install dig on CentOS 8

last updated September 28, 2019 in CentOS, Linux, Package Management

I deployed minimal version of CentOS 8 in the cloud server. However, I am unable to find the dig command on my newly created CentOS 8 Linux server. It says ‘-bash: dig: command not found‘ I tried yum install dig, but it failed too. How do I install dig command on CentOS 8 Linux using the command line?

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