/boot on the ZFS mirror

/boot on the ZFS mirror
 
A small note, in addition to article about the root partition on ZFS .
the previous article : Debian, root on ZFS.
 
Preliminary Steps
 
It is necessary to copy the images of partitions, for example to a USB flash drive, in case of failure, it was possible to recover to the previous working state:
 
mount /dev /disk /by-id /usb-Corsair_Flash_Voyager-0: 0-part1 /mnt /usb /
dd if = /dev /disk /by-id /ata-Micron_1100-part2 of = /mnt /usb /micron_boot.img bs = 4M
dd if = /dev /disk /by-id /ata-Samsung_SSD_850_PRO-part2 of = /mnt /usb /samsung_boot.img bs = 4M
umount /mnt /usb

 

...

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We brought this day as close as we could - the notebook in Windows 10 began to understand the unix line translation of

We brought this day as close as we could - the notebook in Windows 10 began to understand the unix line translation ofNotepad in windows 10 began to understand the unix line translation of , and not just the windows format.
 
 
With the problem of "porridge" instead of readable text for decades, those who tried to open in the Windows environment text documents prepared on other operating systems. Now everything changes all of a sudden. And this change is as little, as epic, in its practical results and ideological consequences. Microsoft is again trying to play in cross-integration and support for open standards.
 
 
For many years, Windows Notepad could normally display only those text documents that contained ...
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"Transparent" HTTPS proxy for circumventing locks of Roskomnadzor

Hello, Khabarovsk! I think many people have recently encountered problems accessing the right resources because of attempts Roskom shame supervision of block Telegram . And I think the comments here are superfluous. Fact - these resources are not to blame for anything, but they are blocked. Problems arose with Viber, ReCaptcha, GoogleFonts, Youtube and others except for the telegram itself . It happened in my organization, and we need all these innocent services like air. At some time everything was solved using proxy servers, but they were unstable or completely ...
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Ubuntu ??? LTS: what's new?

Ubuntu ??? LTS: what's new?
 
 
Yesterday, April 2? 201? the release of the next version of Ubuntu - ??? Bionic Beaver. Its code name can be translated into Russian as a "very strong beaver" (yes, the word bionic has 3r3r3? which is
). Canonical founder Mark Shuttleworth explains the choice of the name so:
 
We thus welcome the creators - those who create applications and packages, who create Ubuntu, who creates something based on Ubuntu. Paying tribute to their tireless work, we chose as a mascot the beast, known for its energetic attitude, industrious nature and engineering savvy.
 
Ubuntu ??? refers to LTS (Long Term Support) -version...
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How we broke Ceph

 
How we broke Ceph  
 
Detective in 1 part.
 
This story happened in October.
 
 
There is Ceph version ??? (Hammer). 6 storages, 8 monitors, 6-8 osd on each storage, SSDs ranging from 1 TB to 4 TB. Replica - ? at least 1.
 
 
Once it happened: in the evening a storm passed through the whole cluster and spontaneously restarted a lot of osd. In the osd logs, we saw standard errors for ceph of the form no reply from osd.X . A few slow requests and spontaneous restarts that for ceph is not a critical event and quite frequent. In general, it happens. But, unfortunately, not all the restarted osd were able to rise...
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Secure SOCKS5 proxy for Telegram for 1 Euro and 10 minutes for

Not all proxies are equally useful. On the wave of news about the blocking of the Messenger messenger, it became urgent to raise its SOCKS5 proxy, because the stranger is not safe to use - it is not known who owns the servers, what software is used on them, and what vulnerabilities there are. In addition, public proxies are often very slow, as a large number of clients simultaneously "try" to use it, overloading server resources. There is a quick setup guide for a private SOCKS5 proxy with authentication for 1 euro and 10 minutes of time and the ability to further extend server protection with ...
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Eternal photo archive for the house

I do not understand the desire to nostalgic for old photographs. But the girls can not be altered, so I had to think about the vault for everyone, so that they no longer bothered to show off the company of the falcon and seals. In a public cloud to spread all the pictures in a row do not want to.
 
Eternal photo archive for the house
 
Theory
 
The SSD resource of the drive is theoretically unlimited, if not to exceed the number of rewriting cycles per cell.
 
Task
 
Make a system of storing and viewing the home photo archive from any device in the house,
 
and take it away for the next 10 or 20 years. At the same time, you can pour and see ...
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Transferring a running Linux system to XFS from HDD to SSD of a smaller size

Transferring a running Linux system to XFS from HDD to SSD of a smaller size
 
This article is a Russian version of a previously published article in English (the link will be in the basement) with minor adjustments to the audience. Immediately make a reservation - I'm not a Linux maniac or even a professional system administrator, so it's likely that sometimes I could use unusual, or even stupid solutions. I would be very grateful if you would point me to them in the comments so that I could improve this guide instead of just jamming the article. Thank you in advance for this.
 
I think I'm not the only one who at some point decided to buy a SSD for a running system. In my case ...
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FastReport.Mono. Part 1: Launch the Web demonstration report

FastReport.Mono. Part 1: Launch the Web demonstration reportDue to the fact that the official Documentation FastReport.Mono is obsolete, and it's not even clear to which version of the Debian distribution it applies (I can assume that by 6 or younger), I decided to write a more or less sane instructions for installing a demo Web interface for viewing reports.
 
 
The problem arose because of the looming prospect of moving one of the projects where FastReport.Net was used, with Windows + Oracle on Linux + PostgreSQL. In addition, I was interested in the possibility of implementing everything in the form of microservices in Docker containers. Alas - ...
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FastReport.Mono. Part 2: Web-report in the Docker

FastReport.Mono. Part 2: Web-report in the Docker
 
 
In the previous parts I explained how to run the demonstration Web report FastReport.Mono. Now, I propose to move to a new level and "wrap" all the necessary components in Docker-containers.
 
 
 
Understand, in heaven only they say that about the sea. How infinitely beautiful it is
 
 
In recent years, everyone has been talking about Docker, because the containers are stylish, fashionable and sexy youth. Many developers and administrators use Docker on the case and without any apparent need. But, if you really need it and it's interesting - welcome to the cat. Unlike the first part, there will ...
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