vSphere unsupported CPU

ESX

So today I wanted to install vSphere 6.7 on one of my older machines. I needed some additional space to move a few VM’s to. So I downloaded the 6.7 ISO, created by bootable usb and plugged it in. Unfortunately (my own fault, should have read the release notes) I got a not-so-cool error “unsupported […]

Read more >

VMware Home Lab

ESX

Recently I found myself in the need of an updated home lab. My current ESX server was reaching its limits on both memory and CPU power. I didn’t really feed the need for 10Gbe connections (since I won’t be testing any vSan or other high bandwidth stuff) so I went for the small, powerfull but […]

Read more >

Horizon View 7 orphaned VM

ESX

I’ve been playing around with Horizon View 7 for a while now. Discovering the instant clones etc and I really started liking it. I used the instant clone feature of Horizon view. All together this works extremely well, but from time to time you might encounter something called orphaned clones (atleast if you mess around […]

Read more >

Windows 10 PPTP Split-Tunneling

Operating systems

Ok, yes, PPTP should no longer be used. But sometimes it is easy to connect to a remote network. In Windows 7 and 8 you could activate split-tunneling quite easily by going to the newly created adapter and edit the IPv4 settings and uncheck “Use the Gateway on the Remote Network”. Windows 10 did not […]

Read more >

Systemd with bash script

Linux

To load my firewall rules I have always used a init script containing all my iptables rules. However with the switch to systemd in Debian Jessie things have changed a bit. create a service file in /etc/systemd/system. In my case this is /etc/systemd/system/firewall.service [Unit] Description=Firewall [Service] Type=oneshot ExecStart=/bin/sh /scripts/firewall.sh start ExecStop=/bin/sh /scripts/firewall.sh stop ExecReload=/bin/sh /scripts/firewall.sh […]

Read more >

Update ESX 5.x to 5.5 using the CLI

ESX

To avoid using VUM or PowerCLI to upgrade your host you can simply use The vmWare online repository. The commands below have to be executed via SSH (enable this in your security profile and start the SSH server) esxcli network firewall ruleset set -e true -r httpClient esxcli software profile update -d https://hostupdate.vmware.com/software/VUM/PRODUCTION/main/vmw-depot-index.xml -p ESXi-5.5.0-1331820-standard

Read more >

VMware vCenter server behind NAT

ESX

Some of you might be running a vCenter server behind a firewall / router performing NAT. If this is the case you might have encountered issues with external ESX hosts. the vCenter ‘polls’ the hosts every 20 – 30 seconds to see if the host is still alive. If you are behind NAT the hosts […]

Read more >

Postfix as backup MX

Linux

Redundancy is very important these days, specially for a highly used medium such as mail. Luckily you can set up something as a “backup MX”. Normally when person a sends a mail to person b the mail-server will search where to deliver the mail trough DNS (MX record) . When we add multiple MX records […]

Read more >

Installing ESXi with less than 4GB of RAM

Linux

I have an old desktop computer here that I would like to use for my ‘home lab’. Its an old dual core with 4GB of RAM. Ok, I know this isn’t much but for some linux virtual machines this is enough. I used PXE to boot the VMware ISO, went trough the first steps and […]

Read more >