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Jun 8, 2018    |       7 comments

Clear DNS cache on vCSA 6.5 and later

As you may know, vCSA is now running on Photon OS.

If you are performing some IP change on one of your ESXi, or you are adding a new ESXi on your infrastructure, you may struggle with DNS caching.

You may found on the web that the solution is simply to run this command on your vCSA :

systemctl restart systemd–resolved.service

Wich worked, on first release of vCSA 6.5, but not anymore.

If your go further in the vCSA configuration you will see in the /etc/resolv.conf this line :

nameserver 127.0.0.1
nameserver x.x.x.x
nameserver x.x.x.x

where x.x.x.x are your DNS servers. This configuration means that vCSA have a local DNS, thank’s to “dnsmasq”

In order, to clear the local caching you’ll need to restart the dnsmasq service thank’s to this command:

systemctl restart dnsmasq

those will not perform any side effect on your infrastructure.

Feel free to leave a comment if you’re still in struggle with DNS on your vCSA.

 

May 30, 2018    |      0 comments

Horizon 7.5

I said that the new post will be really soon, so here it is!

Horizon 7.5 is out !

Great news, first because there is really nice improvements :

  • Horizon 7 supports vSphere 6.7.
  • Horizon Console is the latest version of the Web interface
  • Horizon Help Desk Tool is integrated into Horizon Console
  • You can troubleshoot Linux desktop sessions in Horizon Help Desk Tool in Horizon Console.
  • HTML5 Multimedia Redirection support for the Edge browser
  • VMware Logon Monitor monitors Windows user logons and reports performance metrics
  • VMware Horizon Performance Tracker runs in a remote desktop and monitors the performance of the display protocol and system resource usage.

You have plenty of other new features and bug correction, you can find details here:
https://docs.vmware.com/en/VMware-Horizon-7/7.5/rn/horizon-75-view-release-notes.html

Part of homelab rebuild, it will be really nice to rebuild VDI infrastructure…

So stay tune 😉

 

May 29, 2018    |      0 comments

vSphere 6.7

Yeahhhh, i know, vSphere 6.7 is out since a month…

This post is just to summarize the situation :

First what’s new ?

  • vSphere Client (HTML-5) is about 95% feature complete
  • Improved vCenter Appliance monitoring
  • Improved vCenter Backup Management
  • ESXi Single Reboot Upgrades
  • ESXi Quick Boot
  • 4K Native Drive Support
  • Max Virtual Disks increase from 60 to 256
  • Max ESXi number of Devices from 512 to 1024
  • Max ESXi paths to Devices from 2048 to 4096
  • Support for RDMA
  • vSphere Persistent Memory
  • DRS initial placement improvements

My goal is to perform some deep dive in next posts about those new features.

Part of this, i will completly rebuild my lab from scratch, and i’ll try to give you more and more information about running the best homelab.

So stay tuned, next posts will come (really) soon 😉

May 3, 2018    |      0 comments

My Experience with VCP7-DTM

Few months ago, i decided to renew my VCPs which were expiring on May 2018.

At this time i’m not really interested with other tracks like cloud management or network virtualization.
I’m already VCP6 DCV, so VCP7-DTM was the better choice, i think.

I previously passed the VCP6 DT, but the content in this new version changed a lot.
New products integration, new keys features, this certification was a real challenge for me.

The Blueprint :

This is your key ressource, everything you need to know about the exam, essentially topic included in the certification are in the blueprint.

Continue Reading

Mar 9, 2018    |      0 comments

Powershell and PowerCLI on my Raspberry Pi

First of all, i’m a G33K. This kind of geek who will buy stuff without knowing what he’ll do with it.

I saw few days ago that Raspberry Pi 3 had really nice performance.

Windows is more and more open too the open source world.
VMware realesed few days ago a new version of PowerCLI : 10.0.0.

You shake all this informations and you have it : “well, it may be pretty handsome to have PowerCLI on my Raspberry PI”. Continue Reading

Feb 27, 2018    |      0 comments

RVTools : New version available

If you’re an IT admin, you must know RVTools.
This tool allow you to display many informations about your vSphere infrastructure, and export it.

The last version version of this tool is available online since this month.

Here the change log for the last version :

  • Upgraded RVTools solution to Visual Studio 2017
  • Upgraded RVTools to .Net Framework version 4.6.1
  • Upgraded Log4net to version 2.0.8, Waffle.AD to version 1.8.3 and NPOI to version 2.3.0
  • Connection error when TLSv1.0 and TLSv1.1 are disabled and only TLSv1.2 is enabled is solved by using .Net Framework 4.6.1
  • vInfo tab page new columns: The latency-sensitivity setting of the virtual machine, Change Block Tracking (CBT) and disk.EnableUUID values
  • vDisk tab page new columns: SCSI label, unit number and sharedBus
  • vHost tab page new columns: Assigned License(s), ATS heartbeat, ATS locking values. 0 = disabled 1 = enabled, Host Power Policy shortname, CPU Power Management current policy and CPU power hardware support
  • When Export to xlsx is executed a metadata worksheet with version number of RVTools and date time stamp is added to the output xlsx file
  • All columns in the RVTools export xlsx file(s) now have a filter
  • When export to csv newline characters are replaced by spaces
  • When started from cli and login fails an error message and login box was displayed. Now RVTools will exit with exit code -1, without showing the error message and login form.
  • Added an example PowerShell script with which you can merge RVTools export xlsx files
  • Added a example PowerShell script to start Export all to xlsx for multiple vCenters
  • vDatastore tab page: For NFS datastores the address column is now filled with remote host and path info
  • vDatastore tab page new columns: Datastore Cluster Name, Cluster capacity and Cluster free space
  • The upper limit on the Health check for number of VMs on a datastore is now 9999
  • vHealth tab page: new column “message type” which can be used as a filter in Excel
  • vHealth tab page: hbrdisk.RDID files are no longer reported as possible zombie files
  • vHealth tab page: low disk space messages no also show the free space in MB.
  • All tab pages: Refresh or auto-refresh will respect your sort order
  • CLI export2xls parameters changed to export2xlsx (old parameter will still work)
  • Bug Fix: invalid “Horizontal Alignment” value in xlsx style sheet.
  • Bug Fix: Calculation of total snapshot size was not always correct
  • Bug Fix: Child snapshot hierarchy was not always correct
  • Default installation directory is changed to C:\Program Files (x86)\RobWare\RVTools without the version number

You can download RVTools here.

Feb 26, 2018    |      0 comments

Homelab is the key

Technologies change everyday, as an IT consultant you must be aware of these changes as must as possible.

You have to build, crash, migrate, test, understand how products works.

Homelabing is the key.

Continue Reading

Feb 18, 2018    |      0 comments

I’m back

Here we are… A new start for this blog.

Since one year i did nothing online, i was like sleeping.

I want to start, again, to share my knowlegde, my research and everything that looks important for me in my job.

I’ll still mainly write on VMware technologies and my focus on EUC.

See you soon. 😉

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