Архивы Linux - Page 31 of 59

Installing and configuring ZoneMinder in Ubuntu

ZoneMinder – the program for the organization of video surveillance.

Install command in Ubuntu / Debian:

Solving black screen problems in Ubuntu Server 16

I noticed somehow after installing Ubuntu Server 16.04 LTS that when booting the system, the monitor does not display the login and password entry line, and every time the black screen, the system does not respond to keystrokes, and the system has booted and you can connect to it via SSH.

Increase the volume of calls in Asterisk

To increase the call volume during calls, you need to add a couple of lines (on which you need to increase the volume) in the /etc/asterisk/extensions.conf file, at the beginning of each dialplan:

How to change email after registering Certbot (Let’s Encrypt)

One day after installing Certbot, I entered the wrong email address and later notifications from Let’s Encrypt did not go where necessary.

How to reset root password for MySQL

I will give the option of changing the root password of the user for MySQL.

Installation of the echo canceller Oslec and DAHDI

Once I installed a Chinese TDM410P card for connecting analog telephone lines and a bundle of Asterisk + Dahdi.
Since the board has no hardware noise cancellation, Oslec had to be installed.
When making calls, there was no echo from the side of the analog telephone, but whoever spoke into the IP phone heard himself.

Samba warning solution “rlimit_max: increasing rlimit_max (1024) to minimum Windows limit (16384)”

Once I noticed a message in /var/log/samba/log on one of the servers with samba:

Monitoring current RX and TX network interface buffers in Zabbix

One day after restarting the Ubuntu server, due to the long start of a large number of network interfaces, my script which increased the values of the buffers and also performed other settings was performed ahead of time, respectively, the changes did not apply and I found out about this problem only after 24 hours, so I decided monitor current RX and TX buffers.

Solution of the warning “database /etc/aliases.db is older than source file /etc/aliases”

I noticed once on one of the servers in the files /var/log/mail.log and /var/log/syslog the following warning:

Why service networking restart or /etc/init.d/networking restart does not work

For example, take the server with the operating system Ubuntu Server 14.04, in which let’s say we changed the network settings when executing the commands: