Quicktricks.net

Category: Centos

Create new Linux User with ChrootDirectory
This is quick trick for chroot user in Linux Or make a bash-script for 1 hit (save below code in create-user.sh file then run):
June 23, 2023
How to alert when disk usage is greater than the allowable threshold easily?
Alert when disk usage is greater than the allowable How to alert when disk usage is greater than the allowable threshold easily?You can set a cron job to check disk usage then send to you alert-API when it is greater than the allowable threshold. Here is an example, hourly periodic check. If the system has…
May 5, 2023
Completely remove user accounts on linux for security
Completely remove user accounts on linux for security:Show all User account: Kill all programs running by this user: Delete the user, all the user’s files and folders will also be deleted:
March 23, 2023
Install and use Docker on Linux/ Centos/ Rocky Linux
Basic: Build from OS and your apps
February 3, 2023
[Installation] System monitoring with Grafana + Prometheus + Node Export on Linux
This guide use RHEL/Centos/RockyLinux. Other OS are same. You should have 2 SERVERs: Monitoring server: Install Grafana Monitored server: Install Prometheus PROMETHEUS INSTALL (On monitored server) Create user for this service: // Swap to prometheus user: Create directories: Download Prometheus: Create a config file: Create a service file, this is an examle use port 9090…
September 19, 2022
MariaDB / MySQL write and read Log files on Centos / Rocky Linux
By default, mariaDB never write logs hers for you. Sure, it’s her privacy that she doesn’t want others to know. However, you can enable her logging like this: Make your logs folder and change permission: Edit this file /etc/my.cnf.d/server.conf or /etc/my.cnf.d like as below: Restart your mariadb: Now, you have three file: /var/log/mariadb/error.log /var/log/mariadb/mysql.log /var/log/mariadb/slow.log…
May 18, 2022
Find large files or folder on Linux to delete when 100% disk usage
When 100% disk usage, find large files or folder on Linux: Delete that folder: If you want to delete old file >1 day: In my case, I set cronjob for delete all old file in a session folder:
April 2, 2022
How to migrate CentOS 8 / Stream 8 to Rocky Linux without error?
Why need to migrate CentOS 8 / Stream 8 to Rocky Linux? Dear, after event Centos 8 EOL (end of life) 2022-01-31, RedHat destroyed Centos 8 (stable). Then instead the Centos Stream demo. This is extremely dangerous for your server system. Because automatic updates will be beta only. It may interrupt your service any time.…
January 31, 2022
Config Cyberpanel/ OpenLiteSpeed server to run NodeJS on port 80/443
If you use LiteSpeed, you can run NodeJS project as a PHP project. Step 1: Add a domain (example domain.com) to your server You need to: Create a folder to upload your code. Or create by Cyberpanel admin tool (recommend). Add new DNS record (A) from domain to your server IP Step 2: Modify the…
January 20, 2022
Quick install MongoDB on Centos 8/ Rocky Linux in 1 minute
In Centos/ Rocky Linux terminal, run all bellow command: You can connect your DB by MongoDB Compass app in manual Change your MongoDB port and bind IP in: /etc/mongod.conf
January 14, 2022