According to VMware, Infrastructure Navigator is …a component of the VMware vCenter Operations Management Suite. It automatically discovers application services, visualizes relationships and maps dependencies of applications on virtualized compute, storage and network resources. Effectively it takes a look at the network connections that are running between your VMs (and physical servers) and works out which applications and services are running on each, and the dependencies – both upstream and downstream – for each VM.
There are different schools of thought as to whether you should have SSH enabled on your hosts. VMware recommend it is disabled. With SSH disabled there is no possibility of attack, so that’s the “most secure” option. Of course in the real world there’s a balance between “most secure” and “usability” (e.g. the most secure host is powered off and physically isolated from the network, but you can’t run any workloads ).
Today was always going to be a bit of a funny day as I scheduled the VCAP5-DCD exam for 10am this morning. I am happy to say that I passed! I’m a bit light on VMworld to report today, so forgive my DCD experience to pad it out! Preparation I have to confess my prep for this exam was light – I literally only watched the TrainSignal course by Scott Lowe (@scott_lowe) and just about finished that last night in the hotel!
John Troyer (@jtroyer) asked a question on Twitter last night about a CloudCred prize of $1000-2000: @jtroyer a nice lab setup! — Sam McGeown (@sammcgeown) September 19, 2013 @jtroyer I guess a couple of hosts, storage and a switch, wouldn't get HCL certified for that but I'm sure it's doable! — Sam McGeown (@sammcgeown) September 19, 2013 That got me thinking – was it possible to create an entire 2 host lab with storage on a $2000 budget?
After my previous post about studying and the exam experience of the VCAP5-DCA exam (and 3 weeks of waking up to check my phone for the email all night) I am pleased to say that I received my Exam Score last week and it was a pass! I was really pleased to see that I passed with a very decent margin too, which was great! The rushed nature of the exam and long wait for the results leaves you going over the exam in your head convincing yourself how badly you’ve done, so it came as a huge relief and surprise.
With the release of vCenter Log Insight Public Beta (http://communities.vmware.com/community/vmtn/vcenter/vcenter-log-insight) I thought I’d strike while the iron is hot and run through the installation and configuration. Deploying the OVF This is such a bread and butter task that it doesn’t require more than a few words – it’s definitely worth looking at the Sizing PDF before you deploy (VMware-vCenter-Log-Insight-1.0-Beta-Virtual-Appliance-Sizing.pdf) as it’s not small even for a test installation. If you’re using less than the recommended 8GB RAM there are additional steps to change the heap size for performance.
The vSphere UMDS provides a way to download patches for VMware servers that have an air-gap, or for some reason aren’t allowed to go out to the internet themselves – in my case a security policy prevented a DMZ vCenter Server from connecting to the internet directly. The solution is to use UMDS to download the updates to a 2nd server that was hosted in the DMZ and then update the vCenter Server from there.
This article originally started off life as a record of how I managed to get this working, as a lot of my posts do, but this time it appears I am foiled. Last week, I had 3 vCenter Servers that appeared to be happily talking to each other in Linked Mode sharing a singe Multi-site SSO domain without any real issues. I had a single-pane-of-glass view of all 3 and I could manage them all from the one client.
Had a strange one after deploying an XP VM from a template today - the VM would not power on and threw the following error: An error was received from the ESX host while powering on VM [VM name]. cpuid.coresPerSocket must be a number between 1 and 8 Digging around on google the error seemed to be related to over-allocating vCPUs (e.g. assigning 8 vCPUs on a VM with 4 physical CPU cores).
So VMware’s Support Assistant is pretty awesome and it’s free! I thought I’d do a quick run through of the installation and set up for anyone who was interested, it’s fairly straightforward and if you raise a lot of calls or have multiple calls on the go it’s a time saver! VMware’s official page for the Support Assistant is here - https://www.vmware.com/products/datacenter-virtualization/vcenter-support-assistant/overview.html The OVF deploy is so simple I’ve just taken screenshots: