Shell script to monitor MariaDB replication and send email alert about server health status

Here is a simple shell script to notify secondary read-only replica (slave) MariaDB server health status failure via email and push notification. Master-slave data replication allows you to copy databases to multiple MariaDB servers. It is useful for backup, data recovery, load balancing, and much more. See how to configure SSL-protected MariaDB replication between a master and slave server.

How to shutdown FreeBSD laptop when running out of battery power

After my Raspberry PI died, I decided not to get a new one immediately. Instead, I turned the older laptop into a FreeBSD server. I use this server for Git, backup via ZFS snapshots, running Debian/RHEL VM using bhyve, side project web server and jails with ZFS. It works perfectly, but during monsoon season, the electric supply at home goes for hours, and my battery backup UPS only works for 15 minutes. Hence, when my FreeBSD laptop starts to run out of battery juicy, I want to shut it down automatically to avoid sudden filesystem and other corruption issues.

Ubuntu install vnstat console network traffic monitor

How do I install vnstat is a console-based network traffic monitor on Ubuntu to keep a log of the 5-minute interval, hourly, daily, monthly, and yearly network traffic for the selected interface?

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Fedora Linux install vnstat network traffic monitor

How do I install vnstat network traffic monitor on Fedora Linux system to monitor my hourly, daily, weekly, and monthly bandwidth usage?

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How to check CPU temperature in OpenSUSE Linux

How do I check CPU temperature in OpenSUSE Linux using a command line and GUI tools on my Thinkpad laptop?

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