MySQL Tuner
Just a small note about amazing tool, that can analyze runtime variables of your MySQL server (also MariaDB) and give overview and recommendations – based […]
Continue reading »Category: Security
SSH connection to old servers
When you are on a newer Linux distribution and try to connect to older server, you might run into a problem and get message like: […]
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Stuff, that helped me to add IP-subnet to KVM host
I had a server, that run Centos8 and had several KVM-virtualized machnies. Most of virtual servers had dedicated IPs and when one customer wanted to […]
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Extending XFS root partition on KVM VPS on Centos
Practical steps for resizing root partition for KVM VPS. Our host runs Centos 8, but VPS itself has Centos 7 (with cPanel, but that does […]
Continue reading »Find and delete files with specific content
Sometimes you get bad files uploaded to your website. Files might be the same or might just contain a specific line of code and you […]
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Migrating from Centos to Debian
Little introduction Frustrated as most of you, who has been with CentOS for many years, I have decided to head to Debian. This page will […]
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Fix: Exim mail bounce back – retry time not reached
Sometimes, usually when you have been affected by spammer attack and your exim queue was full of the bad emails, you might have troubles sending […]
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How to manage firewall on Centos7 with firewall-cmd
Centos7 is a great server OS. There are bunch of other sites, which describe how to manage firewall rules, here I am just gathering those, […]
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How to protect your project against phishing – sysadmin tips
Hello guys, Today I am going to list and give brief explanation about how you can protect your project against phishing. This article is designed […]
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Debug your website as Google-bot from shell
Google and other search engines implement their own lists of hacked and vulnerable pages. That is fantastic, but might be nightmare for administrators to debug […]
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