Tag Archives: vCenter

Resilient vSphere 6.0 PSC deployment without Load Balancer

With vSphere 6.0 VMware has separated their vCenter Server into two components - vCenter Server and Platform Services Controller. They also created a list of topologies they recommend  for deployments. The deployment they recommend for high availability includes an External Load Balancer where vCenter Servers are pointed to. An alternate solution is to have multiple Platform Services Controllers and vCenters pointed directly to them. There is no need to have one PSC for each vCenter. Each PSC can manage up to 4 vCenters, so with 2 PSC you can manage 8 vCenters, with 3 you can manage 10 vCenters, which is the configuration maximum at the moment.

psc-deployment-with-or-without-loadbalancer

Platform Services Controller with or without Loadbalancer?

The solution with a Load Balancer sounds nice, and I'm sure it's operable, but it has some drawbacks:

  • It requires a third-party Load Balancer (Compatible Load Balancers are NSX-v, Citrix NetScaler and F5 Network Big-IP)
  • Configuration is complex
  • Troubleshooting is even complexer
  • Does not scale (1 PSC can handle 4 vCenters, with a Load Balancer (which is used for redundancy) 2 PSC are required to handle 4 vCenters)

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What's inside VMware vSphere 6.0 Update 2

VMware has just released vSphere 6.0 Update 2. Together with the Updates, the following product updates were released today:

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How to create custom vCenter Alarms from Events

In my last article I've created a custom vCenter alert with a special event trigger. I've received a question about how to figure out the trigger event string to be used for creating alarms.

The vSphere Client shows the following error event:vcenter-event

To create an alarm based on this event, you have to create a new alarm and use the following event trigger: com.vmware.vc.vsan.RogueHostFoundEvent
alarm-trigger-RogueHostFoundEvent

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VMware vSphere 5.5 Update 3 Released

VMware has just released vSphere 5.5 Update 3. Together with the Updates, the following products were released today:

If you want to get notified about new products, subscribe to my vTracker RSS Feed.

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VMware vSphere 6.0 Update 1 Released

VMware has just released vSphere 6.0 Update 1. Together with the Updates, the following products were released today:

If you want to get notified about new products, subscribe to my vTracker RSS Feed.

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vCenter Server 5.0/5.1 Update - CVE-2014-6593 (SKIP-TLS)

vcenter-server-logoVMware has published an update for vCenter Server 5.0 and 5.1 where CVE-2014-6593 (SKIP-TLS) has been fixed.

It was discovered that the SSL/TLS implementation in the JSSE component in OpenJDK failed to properly check whether the ChangeCipherSpec was received during the SSL/TLS connection handshake. A man-in-the-middle attacker could possibly use this flaw to force a connection to be established without encryption being enabled. The update has been already fixed in newer versions of vCenter Server (6.0a, 5.5 Update 2e). More information are available in VMSA-2015-0003. Read more »

How to add AD Authentication in vCenter 6.0 (Platform Service Controller)

Platform Service Controller is a new component in vSphere 6.0. The PSC contains all the services that vCenter needs for its functions including Single Sign-On (SSO). This post describes how to configure AD authentication in vCenter Server 6.0.

The method shown in this post allows you to manage users and groups in your central directory. This works for both, the vCenter Server 6.0 installed on Windows Server and the vCenter Server Appliance (VCSA).vsphere60-login-screen

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vCenter Server 5.5 January 2015 Update (5.5 U2d)

VMware has published an update for vCenter Server 5.5.

Product: VMware vCenter Server 5.5
Release date: January 27, 2015
Version: 5.5 Update 2d
Build (Windows): 2442329
Build (Installer): 2442328
Build (Appliance): 2442330

The Update resolves 16 issues including the following: Read more »

VM Export/Import PowerCLI Script

I wrote this little script snippet to export and import virtual machines from one vCenter to another. This might help for migrations where you have to add virtual machines from a datastore manually to the vCenter inventory. This script does not export any virtual machine disks or configuration files. It's only supposed as replacement for adding virtual machines from an existing datastore the the inventory.

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Host Profile Error - Found extra CIM-XML Indication Subscription

When you use Host Profiles to check the compliance of your configuration you might get the following failures against the host profile. The message persists after applying a profile and rebooting the ESXi Host:compliance-error-cim-xml

Found extra CIM-XML Indication Subscription on local system for query SELECT * FROM CIM_ProcessIndication sent to destination https://[URL]
Found extra CIM-XML Indication Subscription on local system for query SELECT * FROM CIM_AlertIndication sent to destination https://[URL]

This compliance error appears on HP Hardware when HP Systems Insight Manager (HP SIM) is in use. The URL is different for each system, so the host profile can not be applied. To get rid of the message you have to disable CIM Indication Subscriptions in the Host Profile Configuration

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