SHIFT-WIKI - Sjoerd Hooft's InFormation Technology
This WIKI is my personal documentation blog. Please enjoy it and feel free to reach out through blue sky if you have a question, remark, improvement or observation. See below for the latest additions, or use the search or tags to browse for content.
VMware Alarms
Summary: Information and background on vSphere alarms as well as how to set them up.
Date: Around 2010
Refactor: 1 May 2025: Checked links and formatting.
With the introduction of vSphere 4.0 the possibilities of using Alarms in VMware are greatly improved. This article describes some of the possibilities that are now available while using alarms. We'll go through some of the default defined alarms and customize them to our environment to make sure they do what we want. Note that we'll only use Email Notification in our environment. SNMP traps are also supported, but not used with us.
Since Alarms consists of 4 tabs we'll go through them per tab:
- General
- Naming, description, etc.
- Alarm Type & Trigger
- Monitor for specific condition
- Monitor for specific event
- Enabling Alarm
- Trigger Configuration
- Reporting Configuration
- Range
- Frequency
- Actions
After going through all the options I'll tell you how to configure vCenter for email notification and I'll give you my minimal customizations in the vCenter Alarm Definitions.
Upgrade VM To New Hardware Level 7
Summary: How to upgrade a VMware VM from hardware level 4 to 7.
Date: Around 2011
Refactor: 1 May 2025: Checked links and formatting.
With the introduction of vSphere VMware also introduced a new hardware level for virtual machines, being version 7. The most important reason for me was that with the new hardware version I got a new NIC, vmxnet3. This one is a lot faster that previous ones and wisely accepted in the operating systems we run in our environment. See VMware Change NIC VM Manually on how to change running VMs to use the new network adapter. Of course, first follow this guideline to upgrade the VMware Tools and the VMs hardware version.
Note: This procedure will cost some downtime. Don't do this during business hours.
VM Affinity Rules
Summary: Info and tips about VM Affinity rules on VMware, as well as scripts on how to export and import them.
Date: Around 2014
Refactor: 1 May 2025: Checked links and formatting.
If a service request regarding VM affinity is received you should follow this procedure to implement the service request:
- Check validity of service request
- Create groups if required
- Create affinity rule
- Update documentation
PHP - What is my IP Address
echo "Your IP address is: " . $_SERVER["REMOTE_ADDR"];
echo "Your IP address is: " . $_SERVER["REMOTE_ADDR"];