Vyacheslav

Zabbix: icmpping “Ping item must have target or host interface specified”

Once I upgraded Zabbix to version 6.4 and noticed that the “Template ICMP Ping” template stopped working on new devices, it continued to work on old ones, but if you add a new device, a warning was displayed:

Zabbix. Upgrading the database to primary keys

Starting with Zabbix 6.0, primary keys are used for all tables in new installations, but since I upgraded Zabbix server to version 6.4, I had to manually update the tables after the upgrade.

Before updating, first of all, open the menu “Report” – “System Information” and make sure that the keys are not used, this will be indicated by the entry – “Database history tables use primary key – No”, if the keys are used, then this entry simply will not be.

How to add EPON ONT on MA5608T

In this article, I will show an example of adding EPON ONT on Huawei MA5608T.
I will use ONT from different manufacturers, EPON board H803EPFD for 16 ports.

Restricting access to management on Huawei S2326TP-EI

I will give an example of setting up an ACL to restrict access to Telnet, SSH, SNMP on Huawei S2300 series switches.

Setting up ETP4830 A1 with Huawei OLT

For example, I will take the ETP4830 A1 power supply at 48V 15A (there is a model for 30A) and connect it to the MA5608T so that I can monitor the percentage of battery charge, set the correct parameters for charging batteries (default 53.5V floating and 56.5V accelerated) their capacity (the default is 40Ah or 65Ah), etc.

SNMP MIB/OID for Huawei ETP4830

Let’s say a Huawei ETP4830 power supply unit (UPS) or a similar model is connected to the Huawei OLT MA5600 series, now I will show several SNMP OIDs with which I took data on voltage and battery charge:

SAMSUNG Galaxy M21 Hard Reset

I will give an example of resetting all settings and deleting user data on the SAMSUNG Galaxy M21 phone.

WordPress. There has been a critical error on your website

Once on one of the sites auto-update of plugins was enabled, and after automatic Jetpack update, the site stopped working and an error was displayed:

How I upgraded phpBB 3.3.5 to 3.3.9

I recently updated the phpBB 3.3.5 forum to version 3.3.9 on a server with Ubuntu Server, I will describe the upgrade process.

Installing Asterisk from source

In this article, I will give an example of installing Asterisk from source code, for example, I needed it to install a new version of Asterisk on Ubuntu Server 22.04, since Asterisk 18 was installed from the default repository, and there were no modules I needed by default, such as Voicemail.