Several reports in the Internet with such error: But no real solutions worked for us. Here is our setup: Several web servers servers (using php-fpm…
The simplest nagios setup to make a phone call on a critical notification – using twilio service
The aim of this article is to show you the simplest way you can achieve your monitoring Nagios system to make a phone call on…
rsync and selinux – opendir failed: Permission denied
Selinux could sometime mess up with your setup. Let’s say you configured your rsync daemon but still, you get the error related to permissions when…
PHP missing xml extension – Fatal error: Uncaught Error: Class DOMDocument not found
We upgraded one of our servers and at first did not notice this error. Soon logs began to fill with this error: Apparently, we missed…
The impact of enabling MySQL sync_binlog – really high disk IO
If you enable this feature in your MySQL you could increase your disk IO time and write by 8-10x times. Generally, this feature could save…
Dell Inspiron 7352 with 16G DDR3L single SODIMM RAM – it works!
What a great piece of hardware is Dell Inspiron 7352! In the year 2015, this laptop was on the market with 8G DDR3L SODIMM and…
Upgrade MySQL 5.6 to 5.7 what problems to expect with old my.cnf configuration file
Finally, we do not have any more MySQL 5.6 servers. We upgraded our last part of the system with MySQL 5.6 to 5.7. In our…
Update Supermicro BMC/IPMI Firmware – under Linux console
Here you will see our log of upgrading the Supermicro IPMI firmware with the cli tool included in the firmware package for your IPMI unit…
Update supermicro X10SLH-F firmware BIOS under Linux with the SUM cli
As you can see our product is: product: X10SLH-F/X10SLM+-F The same string is in our KVM IPMI: “Product Name: X10SLH-F/X10SLM+-F” and in the BIOS, but…
Tune nginx proxy cache – control the cache manager how to delete cached files
In most cases you’ll never want to modify the default settings for deleting cache items with proxy_cache_path directives. The problem is in a peak the…