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VM won’t vMotion on Nutanix Cluster – Error: msg.vmk.status.VMK_BUSY

April 19, 2016November 5, 2022Tristan Self

Had an issue where a VM would not migrate to another node within the Nutanix cluster, getting this error message after about 21%. To resolve this I used: https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1031636 even though this is for version 4.x this worked for VMware 5.5. On the host under advanced settings change this setting: Migrate.VMotionResolveswaptype = 1 Change the […]

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Check an SSL Certificate File in plain English

March 7, 2016November 5, 2022Tristan SelfLeave a Comment

You need to verify that a file cert.pem contains the certificate you expected, to do this you can use this command to view the certificate in plain text with expiry date etc visible.

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Using check_snmp to check if a metric is within a range or not

February 18, 2016November 5, 2022Tristan SelfLeave a Comment

Sometimes a metric needs to fall between a range to be considered OK, and outside the range (i.e. above and below) for a warning, and outside that range (i.e. above and below) for a critical. So for example monitoring the input voltage into a APC UPS to ensure it is within a certain range. So […]

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Can’t join VMware 5.5 VCSA to Active Directory – Error: Invalid Active Directory Domain

January 21, 2016November 5, 2022Tristan Self

When attempting to add a VMWare vCenter Server Appliance to our Active Directory I encountered this error message: “Error: Invalid Active Directory Domain”. Within the /var/log/vmware/vpx/vpxd_cfg.log log file I was seeing the following: It would seem that the root record for the domain is missing, this should resolve to a domain controller, so it has […]

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Find the file and folder location of a VMWare template

January 5, 2016November 5, 2022Tristan Self

Seems on the face of it to be something that you can find in the GUI, but its not quite that easy! Based on this link: https://psvmware.wordpress.com/2013/07/04/where-are-virtual-machine-templates-located/ You can find it out by running the following, this will provide you with the name of the template, the host it is currently on and where the […]

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VMware Transparent Page Sharing – Is it on? How much RAM is it saving?

January 2, 2016November 5, 2022Tristan Self

VMWare TPS (Transparent Page Sharing) is a mechanism within the hypervisor to allow the saving of RAM by allowing virtual machines where their memory matches to only store a copy of the memory used once. I.e. If you had 5 Windows 2012 R2 virtual machines running, they are going to be almost completely identical, so […]

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Automating VMware Memory Changes

December 2, 2015November 5, 2022Tristan Self

I had to make some memory changes on a batch of VMs. I didn’t want to have to manually shutdown each VM, alter the memory setting and then restart as this would be very time consuming instead I prepared this script. You first need to create a CSV file, e.g. vmalterlist.csv and place it somewhere on […]

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Altering the vCenter VM without a Management Cluster

December 1, 2015November 5, 2022Tristan Self

What do you do, when you have a virtualised vCenter VM, but you want to adjust something about it without locking yourself out of vCenter. In my case I had a vCenter server that I wanted to adjust the memory on. To do this without locking yourself out, you should follow these steps: 1. First […]

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Nagios check_http plugin get OK returned for an expected error code

November 27, 2015November 5, 2022Tristan SelfLeave a Comment

If you have a webserver that you want to check, but it requires authentication, you can still perform a check without seeing an error code. So for example, if you had a webserver where you wanted to check that the web server was responding on port 80, but didn’t want to have the plugin login […]

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Error Booting VMWare vCenter Server Appliance 6.0u1 after Deployment

November 25, 2015November 5, 2022Tristan Self

The VCSA appliance deployment has changed to be a Microsoft Windows only affair. Unless you perform a few steps first you could end up with the issues below. PROBLEM: During the deployment of the VCSA appliance you get the following error messages displayed: Failed to set the time via NTP. Details: Internal Error. Code 1 […]

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VM won’t vMotion on Nutanix Cluster – Error: msg.vmk.status.VMK_BUSY

Check an SSL Certificate File in plain English

Using check_snmp to check if a metric is within a range or not

Can’t join VMware 5.5 VCSA to Active Directory – Error: Invalid Active Directory Domain

Find the file and folder location of a VMWare template

VMware Transparent Page Sharing – Is it on? How much RAM is it saving?

Automating VMware Memory Changes

Altering the vCenter VM without a Management Cluster

Nagios check_http plugin get OK returned for an expected error code

Error Booting VMWare vCenter Server Appliance 6.0u1 after Deployment

Using Git with HTTPS

Ansible Workstation Setup and Example

Example Website Workload – Amazon Elastic Container Service (ECS) with Application Load Balancer and DNS (Route53), including NAT Gateway