The IT Stories

The Good, the Bad and the Ugly

  • Notes from the field: Citrix ADC Gateway Native OTP with GSLB

    Fun quick fact that I’ve encountered when deploying a ADC Gateway GSLB setup for a customer! You only have to enroll once with the nFactor/Native OTP on one of the ADC’s. (when having a Active Directory Domain across multiple datacenter sites) The setup of choice: Two ADC appliances in HA set on each site GSLB…

  • Notes from the events: PubForum|E2EVC and VMworld 2018

    PubForum|E2EVC – Athens This was the place to be for the community and without marketing BS (except for the sponsor sessions of course but that also is more technical driven) Like always it starts the day before with networking with community peers, seeing old friends and making new. The first day Alex opens with his…

  • Notes from the field: vSphere 6 NVIDIA vGPU not working

    Quite recently I’ve deployed a POC setup for a customer who wanted to leverage NVIDIA vGPU for their XenDesktop environment. In regards to all the prerequisites being met the VM’s wouldn’t boot when trying to test this on the base build of vSphere 6(the latest version that could be downloaded from the site) and the…

  • Notes from the lab: vRealize Log Insight Cluster Upgrade 1-2-3

    I must say I’m very impressed by the simpleness and stability at how VMware put the upgrade process in place for vRealize Log Insight. First a little bit of a background of my deployment: – Three node vRealize Log Insight 4.6.0 cluster – Integrated Load Balancer (ILB) configured – vSphere 6.7 as hypervisor platform I…

  • Notes from the field: Ghost NIC on VMware

    Quite recently I’ve encountered an issue/question at a customer which complained that two virtual machines had ghost NIC’s attached. Well it doesn’t always have to be hard in our line of work ?, after a quick look it was clear that there were snapshots in place for those VM’s with deleted old NIC’s attached. Removal…

  • Notes from the field: NetScaler VPX & Intel Xeon Gold

    Quite recently I came across an issue when deploying a VPX instance on VMware 6.5, which resulted in a bug of the VPX image and underlying physical hardware. For reference the following hardware was backing the hypervisor: Supermicro SYS-2029U-E1CR25M Intel(R) Xeon(R) Gold 5118 CPU @ 2.30GHz VMware ESXi, 6.5.0, 7967591 with vSAN NetScaler VPX 12.0…

  • Notes from the field: NetScaler maxloginattempts

    Came across a very peculiar issue at a customer in regards to the values: Max Login Attempts Failed Login Timeout As soon as a value has been put in you could not reset it to the default value of 0, not from the GUI or CLI it would just not accept it as a value…

  • Notes from the field: uberAgent to the rescue!!

    We all know it, the once in a while “it’s slow logging  on..” and then it gets dropped at the escalation desk for a resolution. So I got the call for troubleshooting this issue. Since I knew from previous experiences that uberAgent is the troubleshooting tool you will want for this I contacted them and…

  • Notes from the lab: NetScaler VPX nsnet_connect prevents logon

    When I started to rebuild my lab I came across the most strangest thing when configuring my NetScaler’s again. First a little background regarding my setup: VMware ESXi 6.5u1 Hypervisors NetScaler VPX 1000 Platinum Appliances Distributed vSwitches with vlan trunks enabled Dedicated NSVLAN for management (tagged) Data transport vlan tagged   Whilst configuring and setting…

  • Notes from the field: XenDesktop RemotePC and Multi Licensing

    Recently I got involved at a customer location which was going to use Remote PC catalogs in combination with their XenDesktop / XenApp 7.15 environment. This was no problem whatsoever to configure but on closer testing I encountered a bug that when you create for example a delivery group called “Windows 10 Remote PC” and…

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