the Sky is the Limit
Anton Gostev wrote a wonderful article on the Spectre and Meltdown attack in his weekly forums digest.
I will repost it here for those who haven’t subscribed yet.
| Veeam Community Forums Digest | January 1 – January 7, 2018 |
I usually don’t like writing about obvious matters. Yes, fire is hot – night is dark and ice is cold. But in recent times I’ve witnessed some network topology designs (?), that made me frown.
I admit, that in some cases the situation is based on a lack of budget or just structures that have grown over years. I can understand that and it’s no shame. It’s my job to give advices and help to re-design.
On the other hand there are environments who boast with high class components that have cost a fortune and which are organized in such an inefficient way that it almost hurts.
This article is not intended as a networking deep-dive. It’s a shallow 101 about network design that should be common knowledge. It’s a guide for the novice but I’d be happy to get responses by experts too.
First let’s start with four simple networking requirements for Virtual Infrastructures.
Continue reading “Resilient Network Infrastructure for Virtualization”
There are situations when you need to check cluster reactions after a ESX host crash. For example to see if HA will start VM on other hosts.
The easiest method is to pull a hosts powercord. But there ar more elegant ways to let a host crash.
Warning! Do not use on productive systems! This is for testing purposes under controlled conditions only. Use at your own risk.
You can trigger a Purple-Screen-of-Death (PSOD) by issuing a special command that causes a kernel panic. Use the VMkernel Sys Info Shell (vsish).
First you need a SSH connection to your host. Change to vsish
vsish set /reliability/crashMe/Panic
Alternatively you can issue the command together with parameters.
vsish -e set /reliability/crashMe/Panic 1
Your host will end up in a PSOD and can be restarted afterwards.
VeeamOn Tour Virtual 2017 took place at Dec. 5th 2017.
Thank you all for attending, watching and for the interesting talks in the expert lounge. It was a pleasure to be part of the team.
In case you’ve missed a talk or a session, you can now watch the recording. Just log in again.
