Vyacheslav, Автор в IT Blog

How to upgrade phpBB 3.3.3 to 3.3.4

For example, I will update phpBB version 3.3.3 to 3.3.4.

Configuring OCSP Stapling

OCSP is a protocol for checking the validity of certificates, that is, to make sure that they have not been revoked and whether they were actually issued. Enabling OCSP Stapling on the web server side allows you to increase the speed of site opening, since the request to the certification authority is made not by the browser, but by the web server.

How to change default-storage-engine in MySQL

When creating a table, the ENGINE option is used, which specifies the storage engine, if this option is not specified in the SQL query, then the default storage engine is used, which is specified in the MySQL server configuration file or when it starts mysqld –default-storage-engine=InnoDB.

Teleste Luminato Firmware Update

For example, I will update the firmware on Teleste Luminato with the installed firmware version 5.2.34.

Changing thread_cache_size in MySQL

thread_cache_size – responsible for caching client threads after they are disconnected so that they can be reused, for example, when hundreds of connections are made to the server per second, this parameter can greatly improve performance.

Configuring Multicast on Eltex MES2324B

Once I needed to receive Multicast traffic from different TV providers and from different VLANs, so I had to use access-list in order to correctly transmit the igmp-report from the client to the required VLAN. If Multicast is in only one VLAN, then you can do without access-list.

Solution for warning Asked to transmit frame type ulaw, while native formats is (g729) read/write = ulaw/ulaw

Once a user made a call and Asterisk began to display a lot of warnings, and there was also no sound:

BDCOM. How to determine which SFP is in the EPON port

Once it was necessary to determine which SFP modules are in EPON ports, namely C+ or C++.

Changing innodb_flush_log_at_trx_commit in MySQL

Default value is 1, possible values are 0-2.

0 – Logs are written and flushed to disk once per second. Transactions that have not been flushed out can be lost as a result of a crash.
1 – Logs are written and flushed to disk every time a transaction is committed.
2 – Logs are written after each commit of a transaction and flushed to disk once per second. Transactions that have not been flushed out can be lost in the event of a failure.

How to change innodb_read_io_threads in MySQL

I will give an example of changing innodb_read_io_threads in MySQL.
The innodb_read_io_threads value determines the number of I/O threads for read operations in InnoDB. The default is 4, the minimum possible is 1, the maximum is 64.