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How to Kill MySQL Queries

MySQL queries can sometimes be long-running and may prevent transactions from accessing necessary tables to complete a...

Managing Journal Systemd Ubuntu

By default, systemd-journald ensures older journal records or journal files are deleted in order to keep a certain amount of disk space...

Monitoring Cisco ASA Firewall With Nagios Web Application

1. Overview Nagios performance monitoring application or a SNMP network monitoring tools and server monitoring tools can be used...

Reading and Understanding the exim main_log

Reading and Understanding the exim_mainlog​ At cPanel, we get a variety of tickets asking about different types of mail...

How to Fix Moodle error backup_controller_dbops_nonexisting

This error occurs when you duplicate an activity or import activities. I recently implemented...

How to fix Ceph error states “oldest is osd_failure(failed timeout osd.xx)

Hi, If your Ceph cluster encounters a slow/blocked operation it will log it and set the cluster health into...

Monitor site to site tunneling health for Cisco ASA using Zabbix

Requirement : - Zabbix server ( Zabbix 2.4 in this post)- Cisco ASA with tunnel site to site configured-...

List of Free E-Commerce

E-COMMERCE/SHOPPING CART: OpenCart (Download)PrestaShop (Download)Magento (Download)OS Commerce (Download)CubeCart (Download)TomatoCart (Download)Axis (Download)Avactis (Download)Quick.Cart (Download)AlegroCart (Download)Zen Cart (Download)Freeway (Download)phpShop (Download)PHP Point...

How to Backup view and events only in MariaDB/MySQL

As a part of a migration, We need to export MySQL events from a MariaDB 10.2 and import them to another MariaDB...

SaaS vs PaaS vs IaaS: What’s The Difference

The cloud is a hot topic for small businesses all the way to global enterprises, but remains a broad concept that covers...

How to Resize tmpfs on Linux

tmpfs is a temporary file system that stores data in virtual. It does not create an file or directory on your hard...

Proxmox 6.0 Bug, hung kernel and how to fix it.

We have been running Proxmox 6.0 in some servers and after a few weeks, they were having a hung issue. one-by-one all...
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Proxmox 5x “e1000 driver hang” fix

Problem: I started to experience proxmox servers going up and down, an intermittent response on the network (SSH),...

How To Fix “Device eth0 does not seem to be present, delaying initialization” Error on Centos

check network: # ifconfig lo        Link encap:Local Loopback           inet addr:127.0.0.1  Mask:255.0.0.0           inet6 addr: ::1/128 Scope:Host           UP...

Create Blocking Bad Bots Through Apache in WHM/cPanel

we see a lot of traffic from 'bad robots', these bots cause problems such as high server load, server instability and can...

Tools for load-testing HTTP servers

Knowing how much traffic your web server can handle when under stress is essential for planning future grow of your website or...