Published in FAUN Publication

·Jun 9

Quick logging solution in Kubernetes with ECK Operator

In this article, we’ll deploy ECK Operator using helm to the Kubernetes cluster and build a quick-ready solution for logging using Elasticsearch, Kibana, and Filebeat. What is ECK? Built on the Kubernetes Operator pattern, Elastic Cloud on Kubernetes (ECK) extends the basic Kubernetes orchestration capabilities to support the setup and management of Elasticsearch…

Efk

2 min read

Quick logging solution in Kubernetes with ECK Operator

May 27

How to remove files with incorrect names on Linux?

Well, it sounds weird but I caught this thing once. I’ve got a file with the name S�vety-i-rekom.pdf on my Linux server accidentally. So I decided to delete it using rm but it didn’t work for me. Here is a way how to delete it actually using a trick with inode:

Linux

1 min read

How to remove files with incorrect names on Linux?

Well, it sounds weird but I caught this thing once.

I’ve got a file with the name S�vety-i-rekom.pdf on my Linux server accidentally. So I decided to delete it using rm but it didn’t work for me.

Here is a way how to delete it actually using a trick with inode:

Published in FAUN Publication

·May 23

Using SSH in a secure and convenient way

Today, system engineers and developers have the ability to securely manage a Linux server remotely using the console. For Windows, there are special utilities for connecting to Linux servers via SSH, such as Putty. For macOS and Linux users, we can use the ssh-client package built into the OS. …

Linux

5 min read

Using SSH in a secure and convenient way

May 11

When was my OS installed?

Sometimes we have to check the date or OS installation. Here we can find how to do that. Linux For Linux we can check the date of creating of FS, which means the date of OS installation: $ sudo tune2fs -l /dev/sdb2 | grep create Filesystem created: Thu Jun 5 18:54:43 2014 Windows There is a command called systeminfo we can use for Windows installation date (Original Install Date field): macOS For macOS we have to check a special file that is automatically created after the successful OS installation:

Linux

1 min read

When was my OS installed?

Sometimes we have to check the date or OS installation. Here we can find how to do that.

Linux

For Linux we can check the date of creating of FS, which means the date of OS installation:

$ sudo tune2fs -l /dev/sdb2 | grep create
Filesystem created: Thu Jun 5 18:54:43 2014

Windows

There is a command called systeminfo we can use for Windows installation date (Original Install Date field):

macOS

For macOS we have to check a special file that is automatically created after the successful OS installation:

$ ls -l /var/db/.AppleSetupDone
-r--------  1 root  wheel  0 Nov 26 15:53 /var/db/.AppleSetupDone

Published in FAUN Publication

·May 6

Linux Server Monitoring Tools Overview

To ensure the continued operation of the server, it is necessary to develop its support. Server monitoring is an important aspect of server success and is on par with server security and backup access. Monitoring servers in a timely manner allows you to detect and respond to the emergence of…

Monitoring

9 min read

Published in FAUN Publication

·May 2

How to send emails so they don’t end up in spam

When setting up our own mail server, we may encounter problems with sent emails being classified as spam. Typically, this can be caused by two reasons: The content of the letter is obviously spammy Incorrectly configured mail server and DNS records We need to be able to write letters correctly…

3 min read

How to send emails so they don’t end up in spam

Published in FAUN Publication

·Apr 27

What a beginner should know to become a Linux System Administrator

If you are a beginner and want to know more about Linux System Administrator responsibilities, welcome to this article. Know your distro The system administrator must be well versed in the operating system that he administers. The administrator must understand all the pros and cons of the system used, differences in distributions, interpreters…

Linux

6 min read

Published in FAUN Publication

·Apr 20

My server has been hacked. What should I do?

This is a story from an ops perspective. Most often, server hacking occurs for several reasons: Vulnerabilities in the used software Misconfigured server configurations Too weak user passwords on the server Human factor (social engineering, keys/tokens leaking, personal motives) Some things could be prevented, for instance, it’s necessary to monitor…

Security

5 min read

My server has been hacked. What should I do?

Published in FAUN Publication

·Apr 18

How can I get my external IP address?

MAC addresses intro We use IP addresses for identifying computers in the network. MAC address is used on the data link level, every MAC address is unique and is set by the manufacturer. The MAC address format is a set of six octets in hexadecimal format, an example of a MAC address is…

Linux

3 min read

Published in FAUN Publication

·Apr 18

How to run 32-bit app on 64-bit Linux distros

Today, most of the manufactured processors in one way or another represent a 64-bit architecture. 32-bit processors can address only 232 bits of data, so they couldn’t work with more than 4GB or RAM. But x86–64 processors can handle much more memory. …

Virtualization

4 min read