Home cisco

Configuring NFS networking for a nested ESXi VM

I have just begun planning and building a lab for my ESXi / vSphere environment so that I can do a upgrade of our vSphere environment (more to come on this process), but I got stuck with an issue for NFS storage. The issue was that I could not mount the datastores on the nested ESXi host, I was not able to find any clear information quickly on the web, so I decided to do a “settings” process here.

A brief background of the environment:

  • Networking: Cisco 3850, with Trunk VLAN configured.
  • Storage: NetApp cDOT with NFS volumes
  • ESXi Version: 6.0U3

The important changes are in bold below and the reasoning is VERY well outlined in this “ancient”, yet 100% valid post by William Lam: Why is Promiscuous Mode Forged?

Continue reading Configuring NFS networking for a nested ESXi VM →

Scripted configurations of SNMP v2

Today I went through the process of scripting the configuration of SNMP configurations for multiple OS/devices. The reason for this is that there has never been a formality or standardisation of this and sometimes we tend to forget this and or that. So, in case you would also like to script it, here is what we use.

The defaults:

sysLocation:
For this, you could either use “3rd floor, of some office” or, if you are a global company, with  monitoring system that makes use of the GoogleMaps API (e.g. Observium) and would like to show various location globally – use a google API name – e.g. London, UK or Cape Town, South Africa etc.

sysContact:
This could be a name or an email address or telephone number

Community:
Something that is configured on your server and on your device/workstation/server that allows communications. There is also a permission set that will get applied to this.

target:
This is the place you are sending information to

port:
This is by default, 161/UDP, unless you change it.

Continue reading Scripted configurations of SNMP v2 →