How to delete an mdadm RAID Array

Deleting a software RAID array will result in all data stored in the devices being lost. So be careful when

RAID getting created as /dev/md127

When I create software RAID with mdadm, it gets created as /dev/md127, instead of /dev/md0 I specified while creating RAID.

Creating Software RAID 0

RAID 0 allows you to combine multiple disks into one large disk. Only use RAID 0 if the data is

IO Load

To get IO read/write rate, run Example To see system load, run

View systemctl service file

To view the content of a systemd service file, run the command Example [email protected]:~$ systemctl cat nginx # /lib/systemd/system/nginx.service #

Redis error currently not able to persist on disk

When doing a FLUSHALl on redis server, i get following error message [[email protected] ~]# redis-cli FLUSHALL (error) MISCONF Redis is

How to flush Redis cache

To delete everything from redis cache, run the command This will delete all keys from the current DB. To delete

How to find Redis data directory

To find the data directory in redis, run the command Redis data directory is specified in the configuration file The

How to Install Gnome and xRDP on RHEL 8 (CentOS 8/Alma Linux/Rocky Linux)

You can install Gnome Desktop + xdrp on a remote server (VPS/cloud or dedicated) and use it as a remote


Find files older than X minutes

To find files that are older than X minutes, use the command This will find all files inside /path/ that


Bitnami WordPress Failed to update Plugin

On a Bitnami WordPress server, plugin installation/upgrade failed with permission error. The error is because the web server in bitmai

Install latest Redis on Ubuntu/Debian Server

To install the latest version of Redis on Ubuntu/Debian server, run See Redis