The admin's notes

Friday, 12 March 2021

Safe (?) password change on web pages - idea draft

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What if we improve web forms for passwords change in the way described below to avoid password leak due to MITM or application/server side c...
Monday, 19 August 2019

MS Spear Phishing Attack simulator can potentially expose your users' passwords

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Quite some time since my last post, but I had some pretty nice case recently, and because MS support seems not really interested to make ...
3 comments:
Tuesday, 20 October 2015

Insecure autoconfiguration lookups in Thunderbird

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Recently I've tried an autoconfiguration feature in Thunderbird. When I was trying to figure out how it works and at what sequence it l...
Tuesday, 26 March 2013

vSphere allows use of a RAW-mapped logical drive on two VMs in wrong way

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I didn't write anything on my blog for a quite some time, mostly because no really interesting things happened. However, I face a we...
Wednesday, 5 December 2012

vSphere: A general system error occurred: Authorize Exception

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This article may help you, if  solution from VMware Knowledge Base titled vCenter Server login fails with error: A general system error occ...
31 comments:
Monday, 19 November 2012

DELL Printer drivers for Linux (PPD)

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Paradox: to install a DELL printer in Linux, you need to download drivers for Windows... It's a pity, actually, that DELL ignores Linu...
4 comments:
Thursday, 8 November 2012

VMWare: Remove datastore problem - "The resource xxxxxxxxxxxxxxxxxxxxx" is in use

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Today I've faced a situation, when I removed all VMs from a datastore, but I still couldn't remove it because of the following error...
2 comments:

VMWare Cluster - Remove datastore failed - The vSphere HA agent on host '10.0.0.1' failed to quiesce file activity on datastore '/vmfs/volumes/XXXXXXXXXXXXX'. To proceed with the operation to unmount or remove a datastore, ensure that the datastore is accessible, the host is reachable and its vSphere HA agent is running.

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For the last few days I do some reorganization of our Virtual Infrastructure. One of the steps of this reorganization is upgrade from VMFS 3...
1 comment:
Thursday, 24 May 2012

Invisible symbols in sssd upstart config causes sssd to not start if /bin/sh is a link to /bin/bash

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I've committed a bug for Ubuntu today. Hope they fix that soon, since we have not so much time before migrate all users from 10.04 to 12...
Friday, 18 May 2012

How to setup diskless Ubuntu 12.04 with read-write root partition

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Well, this how-to for the diskless Ubuntu setup is not usual. The main point is that all our infrastructure is based on CentOS, but sometim...
4 comments:
Sunday, 13 May 2012

Simple export of registry subkeys in HKCU\Software and HKLM\Software

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I didn't write .cmd scripts for a very long time. But few weeks ago I faced random failures on my old laptop, so I was forced to migrate...
Monday, 16 April 2012

My Projects: Virtualization - part 2: P2V

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Here is the next post in " My Projects " series, and the second one about Virtualization. After migration from XEN was finis...
Sunday, 1 April 2012

My Projects: Virtualization - part 1: XEN to ESX

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Here is the next post in " My Projects " series, and this time it is about the Virtualization. Well, if think about that, I u...
Saturday, 31 March 2012

My Projects: Backula backup system

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This is third post in the "My Projects" series . This time, like my previous post , it is also dedicated to the World Backup Da...

My Projects: History: backup scripts

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This is second post in the "My Projects" series , and this time it dedicated to the World Backup Day. Again, I will describe ...
Friday, 30 March 2012

My Projects: My very first commercial project - VoIP

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This is the first post in the "My Projects" series , and I decided to start with my very first project completed in a commercia...

My Projects: prologue

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I'm going to begin a series of posts aimed to create some kind of portfolio of projects in which I was involved. I'm not sure the...
Monday, 20 February 2012

How to migrate data to the smaller disks using LVM.

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Well, there could be any other subject for this post taken, because I'm going to write about the Physical Extents in LVM, and this cou...
1 comment:

IBM DS3000/DS4000/DS5000 vCenter Management plugin issue

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Not long ago I have found that IBM have a plugin for their storage for the vCenter. Particularly I was interested to manage DS3400 and DS35...
1 comment:
Sunday, 18 December 2011

Advantages of PXE

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It's just a note about my positive experience with PXE . Although I was working with it some years ago, but now it became so simple to ...
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