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How to add disk image to KVM virtual machine with virsh command
How do I add additional disk storage to a guest operating system to KVM virtual machine with virsh command on Linux operating system?
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How to disable ssh password login on Linux to increase security
I want to disable ssh clients from accessing using the password and only allow ssh login using SSH keys. How do I disable password authentication for SSH on Linux operating systems?
View ArticleHow to create a new config file in Ansible playbook
I wanted to create a file named /etc/apt/apt.conf.d/1000-force-ipv4-transport with the value set to 'Acquire::ForceIPv4 true;' on 20 cloud servers hosted in AWS. I already setup Ansible playbook to...
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How to add an extra second hard drive on Linux LVM and increase the size of...
I have 250GB disk installed on my home Linux server. I just bought a brand new 250GB SATA disk and I want to add a new disk to my existing LVM volume to increase its size total size to 500GB. How do I...
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How to set rsync speed limit from eating all bandwidth with –bwlimit option
The rsync command is eating all my bandwidth from a backup script and generating tons of I/O. How do I set a limit for file transfer speed of rsync command on Linux or Unix-like system? How can I keep...
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How to find all hard links in a directory on Linux
I have a file named /etc/passwd i and I would like to find all hard links to this file in a directory. How do I find out all other hard links to the /etc/passwd in /backups/ directory? How can find all...
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How to forcefully shutdown a guest VM using virsh command on Linux KVM
I used the command 'virsh shutdown vm1' to shut down a guest named vm1 using the virsh command. However, it is still running, and my vm1 is not responding to an ssh session. Is there is a way to...
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How to wipe a signature from a disk device on Linux with wipefs command
I recently decommissioned Debian Linux based nas server and moved disk from my nas server to Linux-powered desktop. However, when I run fdisk command, I am getting the following error: Â Â Â Â /dev/sdb:...
View ArticleHow to install and configure MariaDB Galera as master to master replication...
How do I install and configure MariaDB Galera master to master cluster on Ubuntu Linux 16.04 LTS server to get both read and write scalability?
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How to enable TLS/SSL encryption with Glusterfs storage cluster on Linux
I setup GlusterFS cluster on Ubuntu Linux. How do I enable network encryption using TLS/SSL for my Glusterfs storage cluster on Linux for security reasons? How do I setup I/O encryption and management...
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How to set and enable MariaDB slow query log
I setup MariaDB server on Linux. How do I enable slow query log in MariaDB server on Linux or Unix-like system?
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How to reload/restart php7.0-fpm / php5.0-fpm service
I am a new Linux and Unix system user. I want to reload or restart my PHP-fpm service. How do I restart PHP-fpm? How do you restart php7.0-fpm on Ubuntu Linux 16.04 LTS server?
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How to increase and set upload size to 100MB in PHP-Apache
I am using Apache with mod_php on Debian/Ubuntu Linux server. How do I increase file upload size limit in PHP-Apache app from default 2MB to 100MB?
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How to run command or code in parallel in bash shell under Linux or Unix
How do I run commands in parallel in a bash shell script running under Linux or Unix-like operating system? How can I run multiple programs in parallel from a bash script?
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Failed to set locale, defaulting to C warning message on CentOS Linux when...
Whenever I run yum command, I get an error or warning that read as Failed to set locale, defaulting to C. How do I fix this issue on CentOS 7 Linux server? Why do I get "Failed to set locale,...
View ArticleHow to install and use vtop graphical terminal activity monitor on Linux
The vtop is a graphical activity monitor for the command line written in Node.js. How do I install vtop on my Linux server?
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How to check whether AMT is enabled and provisioned under Linux
How do I check whether Intel Active Management Technology (AMT) and Intel Standard Manageability (ISM) enabled or disabled under Linux using command line for CVE-2017-5689 vulnerability?
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How to analyze Nginx configuration files for security misconfiguration on...
How do I install Gixy for Nginx configuration static analyzer on GNU/Linux operating system to to prevent security misconfiguration and automate flaw detection?
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How to configure Samba to use SMBv2 and disable SMBv1 on Linux or Unix
I am a new Linux user and for security reasons and to avoid ransomware, I would like to disable the SMB1 protocol in samba configuration on a CentOS Linux version 7 server. Is it possible to disable...
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How to find out and show a log of actions taken by the software management on...
I am a new Debian Linux server user. How can I display a log of actions taken by the apt-get command or apt command or dnf command or yum command software management command?
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