I know, that in the era of IaC, OS templates should be gone, but still they’re alive. During my work I faced the situation, that I had to patch monthly about 30 VM Windows Server VMWare templates with only specified patches, whch were previously approved by the relevant team. Patches were defined in the SCCM – for the I wrote another script to gather all needed patches and create an ISO which will be the entry point for the patching script – but this is a different story. Continue reading
Today, I’d like to share a very simple function I wrote some years ago, I would even say many years :). This is a simple powershell function, without any error handling and parameters checking. I needed at some point to have proper logging of my scripts and I wanted to have it displayed on screen and logged to the file as well for some later usage. I wrote this function to achieve my need.
There are situations when one need to add a new port group to the existing standard vSwitch in vCenter. This is easily configurable in the vCenter in the host configuration. This can be done manually on the small number of hosts, however on bigger number it can be really annoying. What offers vRO as basis. In the built in workflow list under the “Library->vCenter->Networking->Standard Virtual Switch“, one can find a workflow “Add port group in the standard virtual switch“. It’s good for the start, so let’s see what it needs Continue reading
I’m a great PowerShell fan, I think it’s the second best (or maybe first one) thing Microsoft bring to IT world – for me still the one and best is MS Exchange.
Some time ago MS introduced a thing called Desired State Configuration, as I’m correct it was with PS 3.0, for sure with PS 4.0.
You can read a lot of DSC just to google it or go to MS site. I won’t explain how DSC works and what is the pull server, how to enforce configuration compliance, etc …
For my compliance I’m using SCCM, however I found Powershell DSC really useful for my initial server configuration, so I’d like to share how easy and handy is to build some initial server configurations – “Make it smart, make it simpe” – from this starting point one can go wherever … sky is the limit 🙂 Continue reading
As system engineer I’m providing a 3rd level support in IT areas I work on. So one day a strange case came to me. An issue was reported that on multi-homed Windows 2012 R2 server – this case was : 2 network interfaces on Windows 2012 R2 (I can imagine it can happen on 2+ network interfaces Windows 2008 or newer). So on mutlihomed Windows Server 2012 R2, when try to ping internally FQDN wrong IP is returned. Continue reading
In the post vRealize Orchestrator – Workflow to change DRS setting to default on single VM I presented the workflow to change DRS to manual on single VM. Now it’s the time to change this setting back to the default one, as it was. So to do this it’s quite easy to make a copy of previously create workflow.
And just edit the code of “Scriptable task”, because input parameter and attributes remain the same as in workflow described in previous post. Continue reading
Multiple times in multiple workflows, I needed to have VM not being migrated during the workflow run. Easiest way is to disable DRS on the VM. Well, it seems that DRS setting does not belong to VirtualMachine object, DRS settings is part of the ESX Cluster object. We’re still able to to set setting individually per VM, however it has to be set on ESX Cluster level not on the VM itself. I was pretty sure, that there built-in vRO workflows for such simple setting … However, it’s not. That’s what VMWare offers by default
- Add DRS virtual machine
- Add virtual machines to DRS group
- Create cluster
- Delete cluster
- Disable DRS on cluster
- Disable HA on cluster
- Enable DRS on cluster
- Enable HA on cluster
- Remove virtual machine DRS group from cluster
- Remove virtual machines from DRS group
- Rename cluster
If there is a need and there is no solution – it has to be created.
Today I had to download around 900 files from ftp server, however firewall was blocking almost everything, however I was able to access the FTP server via web browser (I used one and only IE :)). So a colleague advised me to use wget to download the files, but I’m a kind of MS guy and I’m not get used to using wget, so I decided to use powershell. So I’d like to present you how easy it is to download the files using powershell (I’m using v.2). Continue reading
When I was working as mail engineer I had to write the script for monitoring CCR queues on Exchange 2007, then my friend had rewritten the script to monitor DAG replication queues on Exchange 2010. So what script does, it generates a html report about the DAG replication queues and sends it via email to defined recipients. There were some tricky parts we’ve had to face, for example there was no possibility to use any open-relay receive connector to send mail, so solution was to create an “eml” file and put it to Exchange “Pickup” folder and it’s a bit tricky to create eml file containing html attachment :). Continue reading