Author Archives: Vyacheslav

Ubiquiti Zabbix templates

I sketched a small template for the client stations (and other devices in the station mode), displaying the level of the signal (with the trigger at a low level), traffic, auto-filling in the network node’s inventory – frequency, SSID AP, WLAN MAC, etc.
In the template, the group “Wi-Fi equipment” needs to be changed to the desired one (it is possible to use the standard Templates), and also specify the correct SNMP community instead of “COMMUNITY”.
Download Zabbix template Ubiquiti Client Station

Recovering GRUB Linux

Usually on each disk there is an MBR (master boot record) and when the computer is turned on, the BIOS accesses it for information for further download. On Linux systems, GRUB is used as the boot loader, I will write about the recovery options of which below.

You can see the version of GRUB using the command:

grub-install --version

1) First option.
We start the system with LiveCD/USB, for example in the Ubuntu Desktop image, in addition to the installation, it is possible to start the system.
Open the terminal, for this press Alt+F2 and enter the command:

gnome-terminal

Continue reading “Recovering GRUB Linux”

Updating the GI Matrix Lite’s firmware

There are several options for updating the GI Matrix Lite firmware:
1) Using USB flash drive
2) From the computer through the RS-232 port
3) From the Master receiver to the Slave receiver through the RS-232 ports
4) Through the Internet
5) From the satellite

On the test I will give an example of updating the firmware using a USB stick.

First of all we make a backup copy of the firmware by connecting the USB flash drive to the receiver and selecting MENU – System – Save to USB – OK
And also save the keys MENU – Conditional access – CA setting – Edit keys – press the green button, after that the file mcaskey.bin appears on the flash drive.

So:

1) Download the latest firmware from the Internet or for example from here
https://files.ixnfo.com/Firmware/GI_Matrix_lite/ALI3612_0E060B00_galaxy_140_combo_official_synaps_1CA_0CI_1.5.69.rar

2) Unpack the firmware file from the archive if it is in it and copy it to a USB flash drive, then connect the USB flash drive to the receiver.

3) Open MENU – System – Update via USB, select the firmware file, select the update type, then Start and OK.

At the end, the receiver will reboot itself.
At the time of updating, you can not turn off the power of the receiver or turn off the USB flash drive.

Configuring Cron Jobs in cPanel and WHM

Cron jobs are added separately for each user through the cPanel and WHM web interface, namely cPanel “Advanced” -> “Cron Jobs“.
Through the WHM panel “Home” -> “Server Configuration” -> “Configure cPanel Cron Jobs“.

But there are also system tasks that can not be seen through the panel.
They can be seen by connecting through SSH to the server and running the command from the root user:

crontab -e

or from another user via sudo:

sudo crontab -e

In the nano editor, the shortcut Ctrl+X is used to exit, and y/n to save or discard the changes.
The file itself with the tasks is located on the path /var/spool/cron/root

If an annoying report is sent to an e-mail when executing an assignment, you can hide the output of the task by adding the following code to the end of the command:

>/dev/null 2>&1

To restart the Cron service, use the command:

service crond restart

See also a similar article: Using and configuring CRON

Configure ProFTPd using the MySQL user database

Let’s say there is a ProFTPd server installed, for example, as I described in this article – Installing and Configuring ProFTPd in Ubuntu
And also installed MySQL server, for example, as I described in this article – Installing and configuring a MySQL server on Ubuntu

Here is an example of setting up ProFTPd using the MySQL user database.

Continue reading “Configure ProFTPd using the MySQL user database”

How to upgrade the firmware on D-Link DI-804HV

To update the firmware of the router D-Link DI-804HV, perform the following necessary steps:

1) Let’s see the revision on the label under the router and download the new firmware from the official site for it http://ftp.dlink.ru/pub/Router/DI-804HV/Firmware/
Updating the firmware of the router for the wrong revision can lead to its failure.

2) Open the settings of the router by typing in the browser its address, for example http://192.168.1.1 or 192.168.0.1 and enter login/password (can be “user” without password).

3) In the opened interface at the top, open the “Tools” tab, on the left of the menu, select “Firmware“. The current page will show the current version of the firmware, if it is older, then click “Browse” and select the previously downloaded new firmware file, then click “Apply” to start the process updates.

We will wait for the update to complete, usually 2-5 minutes. When finished, the router will reboot.

Done.

The solution of the error “There is insufficient memory or disk space. Word cannot display the requested font”

Faced somehow with a mistake:

There is insufficient memory or disk space. Word cannot display the requested font.

In my case, the error occurred when you set a document to print in Microsoft Word 2010 on Windows 10. And from the browser and other programs to print documents started.

What I did not try to solve the problem, as well as check the integrity of the system files by running the following command at the command prompt on behalf of the administrator:

sfc /scannow

But the solution to the problem turned out to be banal.
I tried to add another network printer by IP and documents from Word to the new printer were printed.
The printer for which jobs were started and not printed, was connected via USB to a neighboring computer running Windows 7 and added to the current on the network.
Therefore, in order to solve the problem, in the properties of the printer where it is allowed to share it, we will add drivers for the necessary operating systems, in my case for Windows 10.
The second option, since the computers were side by side, I did not add the driver, but simply switched the printer to a computer with Windows 10, allowed it to share and added it over the network on a computer with Windows 7.

That’s all, the error has disappeared.