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MySQL Auto Failover using Keepalived on Debian/Centos
What is Keepalived ? Keepalived is a lightweight, high-availability framework solution for Linux. It performs load balancing and failover tasks on Linux Virtual Servers. Keepalived can monitor systems and automatically switch to standby mode if problems arise. If the primary server fails, the floating IP will be automatically moved to the
Copying Text-Files from a Remote Server to the Clipboard
Note: In this article, we will explore three methods for copying files or text from a remote server using SSH, Netcat, and an HTTP server. Method 1 : Using SSH To connect to a remote SSH server and copy the contents of a file, you can use the following command. This
Linux : How to restore default /etc/ config file.
1- Debian/Ubuntu : For many cases, the default configuration file is provided by a package directly. In such cases, you can extract the specific file from the package, thus easily recovering the file. To check if a package provides the file, run dpkg -S on the full path of the
How to run cron jobs every 1, 5, 10, or 30 seconds
By default, cron checks crontabs for cronjobs every minute. If you want to run a job every n seconds you need to use a simple workaround. Method 1 : Using a start script The easiest way to run a job every n seconds is to run a job every minute and,