Pawel Grzes - Virtually…

code

I need to find files > 2GB

Simple PS code to find files bigger than certain size. Useful for disk cleanup.

code

Checking Hyper-V server last reboot date

Simple Powershell code to check Hyper-V servers last reboot date if needed. Servers are pulled from their AD OU.

vmware

There we go, VMware certificaton!

Starting 2021 with a style, I received my VMware Certified Professional certification last Friday. Feels good, man!

servers

Veeam, Synology and AD

Joining DiskStation into Active Directory means that speeds over SMB may (and typically will) drop, but not a little, not a bit, they drop like 50% down. I found traces of this problem on StackOverflow, Reddit, Synology Community forums with some tips of which

vmware

vCenter, EVC and all that jazz

The host cannot be admitted to the cluster's current Enhanced vMotion Compatibility mode. Powered-on or suspended virtual machines on the host may be using CPU features hidden by that mode.Oh boi, not this again :/This scenario assumes you have at least 2 ESXi

lab

Lab Log #5

What’s new: No changesWhat’s changed: Main host disk and RAID setup replaced.Breaking changes: No changesUpcoming changes: No changes

lab

Lab Log #4

What’s new: New Xiaomi vacuum integration (post coming)What’s changed: No changesBreaking changes: No changesUpcoming changes: CMS change here

servers

DNS redundancy with Synology DNS Server

Generaly speaking having a single DNS ain’t a good idea. Having a Domain Controller being only DNS server is worse. Installing a second DNS server on the same physical host was pointless, if ESXi goes down I have no way of resolving names

lab

Lab Log #3

What’s new: ESXi moved from internal USB to SD cardWhat’s changed: ESXi updated to ESXi-6.7.0-20190104001-standard (Build 11675023)Breaking changes: CPU changed to Intel Xeon E3-1265L V2HP P420 RAID controller added (with custom cooling mounts)RAM expanded to 16GBThis concludes main

lab

Fresh install HPE Gen8 ESXi 6.5 to 6.7 update

This post is not really up to date anymore since it does not reflect the fact that I am using 6.7 images now.While moving my ESX install from internal USB to SD card I realized I’d use the all-in-one instructions for

lab

HPE Gen8 ESXi SCSI drivers downgrade

Apparently only well working SCSI driver version is 5.5.0-88, if your server is suffering from low RAID performance downgrade is required. Upload scsi-hpvsa-5.5.0-88OEM.550.0.0.1331820.x86_64.vib to /var/log/vmware/Remove any old drivers with esxcli

lab

Lab Log #2

What’s new: DNS redundancy (more about this here),PowerCli installed on DC, let’s check the automationWhat’s changed: ESXi updated to ESXi-6.7.0-20181104001-standard (Build 10764712)

lab

Lab Log #1

What’s new: Added RADIUS based VPN auth with Mikrotik over L2TP,Simple PKI to support internal services with domain trusted CA (added to NAS, ILO and ESXi),OOBM enabled with Kerberos authWhat’s changed: network naming convention (domain-type-os-number convention) for easy expansion,DC

lab

SSH with Duo Security on Alpine Linux

I wanted to have a secure entry to my home lab, key seemed about right, but why not extra layer with 2FA? Google Authenticator is cool, but push notification is even cooler. I went for Duo Security which allows up to 10 clients without

security

Mikrotik: Blocking unwanted connections with external IP list

January 2020 edit: This list is now automatically updating every week. March 2021 edit: Corrected commands listed in the text below. When setting a public facing web proxy I noticed quite a big number of connections coming from the East (mostly Russia, China, Koreas,

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