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Database

How to Kill MySQL Queries

Feri Setyawan - 0
MySQL queries can sometimes be long-running and may prevent transactions from accessing necessary tables to complete a...
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How to

How to Fix Moodle error backup_controller_dbops_nonexisting

Feri Setyawan - 0
This error occurs when you duplicate an activity or import activities. I recently implemented...
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Disk Utility

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

Feri Setyawan - 0
Hi, If your Ceph cluster encounters a slow/blocked operation it will log it and set the cluster health into...
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How to

Monitor site to site tunneling health for Cisco ASA using Zabbix

Feri Setyawan - 0
Requirement : - Zabbix server ( Zabbix 2.4 in this post)- Cisco ASA with tunnel site to site configured-...
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Database

How to Backup view and events only in MariaDB/MySQL

Feri Setyawan - 0
As a part of a migration, We need to export MySQL events from a MariaDB 10.2 and import them to another MariaDB...
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How to

How to Resize tmpfs on Linux

Feri Setyawan - 0
tmpfs is a temporary file system that stores data in virtual. It does not create an file or directory on your hard...
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How to

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

Feri Setyawan - 0
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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How to

Delete OLD data from Zabbix database

Feri Setyawan - 0
If you are using Zabbix for a long time, then you might notice that the database size of Zabbix is increasing every day. Then...
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Database

Unable to start MySQL on Ubuntu: AVC apparmor=”DENIED” operation=”open”

Feri Setyawan - 0
MySQL on Ubuntu fails to start. The following error messages are shown in the output of the journalctl -xecommand: AVC...
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Disk Utility

Converting between image formats

Feri Setyawan - 0
qemu-img convert: raw, qcow2, qed, vdi, vmdk, vhd The qemu-img convert command can do conversion between multiple formats, including qcow2, qed, raw, vdi, vhd, and vmdk.
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Database

Migrate MyISAM tables to INNODB using mysqldump

Feri Setyawan - 0
In this article you will find information how to convert MyISAM tables to INNODB.  The procedure here is an...
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Email

Test TCP Port 25 (smtp) access with telnet

Feri Setyawan - 0
In this article I show you how to use telnet to test the access to a mail server on TCP port 25.
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Proxmox 5x “e1000 driver hang” fix

How to Feri Setyawan - 0
Problem: I started to experience proxmox servers going up and down, an intermittent response on the network (SSH),...
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How To Fix “Device eth0 does not seem to be present, delaying initialization” Error on Centos

How to Feri Setyawan - 0
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...
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Create Blocking Bad Bots Through Apache in WHM/cPanel

How to Feri Setyawan - 0
we see a lot of traffic from 'bad robots', these bots cause problems such as high server load, server instability and can...
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Tools for load-testing HTTP servers

How to Feri Setyawan - 0
Knowing how much traffic your web server can handle when under stress is essential for planning future grow of your website or...
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