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Good afternoon, casual reader.

For one project, it was required to get the value of a variable from an ini file.

And it seems like the solution is simple, a one-line script like:

grep dbname db.conf | awk -F '=' '{ print $2 }'

But what if there are several values in different sections? Then a one-line script will not work anymore.

Search for a solution for linux gave no results :(, although maybe I'm just lazy and have not looked through all the search results.

The decision was made quickly, we take Python and the configparser package. Result ini-file.

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Colleagues, good afternoon!

Having moved to the position of team leader, I began to conduct interviews more often. And the problem with personnel in the region is making itself felt.

There is only one way out - to create a specialist!

And the main question becomes, is he ready?! It was decided to make a test task that was sent to potential colleagues. For verification, a specially broken image of the virtual machine was created.

Restoring this VM answer the following questions:

• Reset password root

• Working with fstab

• iptables|firewalld

• Routing Linux

• systemd

• LVM

• Extended file attributes

• Recovery of work PostgreSQL

• Recovery of work bash scripts.

Links on image VM:

• Yandex

• Google

Next plans, i will create one more VM for advanced admins. Bye, bye.

It was a long time ago, which is why I didn't find a plug-in for monitoring the temperature in ports for the Gentoo, I don't remember.

So I wrote mine.

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Good day, casual reader!

And so what I want to tell you today, in the depths of one small department, one small company, a small script - and named this script pyRsyncBackup

For what?! The task was as follows:

• Backing up configuration files.

• The initiator must be from outside. Because NAT.

• Not all nodes have direct access.

First, a prototype was created that performed all these functions, worked on CRON and everyone was happy while the number of servers did not exceed over 100. + the release of the new software added work on re-configuring pyRsyncBackup.

More requirements have appeared:

• Auto detection of backup modules.

• Working in Linux daemon mode.

Which was implemented in the current version pyRsyncBackup:

• run as daemon.

• Auto detection of backup modules.

• Backing up via intermediate nodes.

What to expect next:

• moving away from PostgreSQL, possibly into memory, perhaps into SQLite.

• redesign of the proxy functionality, since some hosts shoot SSH connections (PAM)

• Web interface for collecting backup files

But I will deal with these improvements, after creating a prototype of the access control system, if I have enough time and energy, then possibly this year as well.

Thank you.

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The IT farm has 4 Brother DCP-7065DN printers, I wanted to monitor the status of the cartridges, and ran into problems:

1. The plugin for Nagios check_snmp_printer is not suitable, it returns the wrong value, although it is perfect for monitoring the state of the drum.

2. I could not find on the network what SNMP OID of the cartridge status for this printer.

I wrote to Brother support ... And unexpectedly for themselves they answered and gave me the OID for my printer. Opened my favorite VIM and wrote a bash script for Nagios. And now I share it check_snmp_brother.

We put this script in the folder with Nagios plugins, set the necessary rights, and set the flag for execution.

Configuring Nagios

define command{
command_name  check_snmp_brother
command_line  $USER1$/check_snmp_brother $ARG1$ $HOSTADDRESS$ $ARG2$ $ARG3$
}
define service{
        use                          default-service
        host_name                    PRINTER
        service_description          Toner Black
        check_command                check_snmp_brother!public!20!10
        }

The script works correctly for Brother DCP-7065DN model. If it works for other models, I will be glad if you let me know.