Vyacheslav, Автор в IT Blog

Moving ABillS to another server

On the test I will transfer the ABillS billing system from one server to another.

Configuring L4-Redirect-ipset for Accel-ipoe and ABillS

In order to authorize clients with a negative balance Accel-ppp to add IP addresses to the ipset list, add the following to its configuration, in the ipoe section:

Solution «TX driver issue detected, PF reset issued»

Once on one high-load access server with about 5 Gb/s traffic in /var/log/syslog, errors began to appear frequently:

Access-Control-Allow-Origin (CORS)

CORS (resource sharing between different sources) is browser technology that allows a web page to access resources from another domain.

To enable CORS in Apache2, you must first activate the headers module, in Ubuntu Server, you can do this with the command:

TRENDnet TEW-651BR firmware update

For example, I will use TRENDnet TEW-651BR with firmware 2.00nb03.

D-Link DIR-400 Firmware Update

D-Link DIR-400 is a rather old router model.

I will describe the steps in steps:

Changing query_cache_type in MySQL

query_cache_type – this parameter enables or disables the operation of MySQL Query Cache.

Information about using .htaccess

.htaccess – (hypertext access) additional configuration file for the Apache web server and similar servers.
In order for the file to be processed by the Apache server, the “AllowOverride All” option must be in the configuration file for the specified directory.

D-Link DSL-2500U Firmware Update

For example, I will flash the D-Link DSL-2500U modem with firmware 1.0.47 for version 1.0.50.

Changing table_open_cache in MySQL

table_open_cache – the number of cached open tables for all threads. Opening tables is a resource-intensive process, so it is recommended to keep a certain number of tables open in the cache.