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Category Archives: Knowledge Base

Official VMware Knowledge Base

Important NSX for vSphere KB Updates – March 2016

vCloud Networking and Security will reach end of availability and end of support on September 19, 2016.

  • KB 2144733 – End of Availability and End of Support Life for VMware vCloud Networking and Security 5.5.x
  • See the fully updated vCNS to NSX Upgrade Guide
  • See also KB 2144620 – VMware vCloud Networking and Security 5.5.x upgrade to NSX for vSphere 6.2.x Best Practices
  • ​Upgrade path from vCNS 5.x: Using the NSX upgrade bundle posted on or after 31 March, 2016, you may upgrade directly from vCNS 5.1.x or vCNS 5.5.x to NSX 6.2.2 Please see the NSX 6.2.2 release notes
  • Upgrades from NSX 6.1.5 to NSX 6.2.0 are not supported. Instead, you must upgrade from NSX 6.1.5 to NSX 6.2.1 or later to avoid a regression in functionality. Refer to KB 2129200

NSX for vSphere 6.1.x will reach end of availability and end of support on October 15, 2016

  • KB 2144769End of Availability and End of Support Life for VMware NSX for vSphere 6.1.x
  • The recommended release for NSX-V is 6.2.2. Refer to KB 2144295Recommended minimum version for VMware NSX for vSphere with Guest Introspection Driver, ESXi and vCenter server.

New issues:

  • KB 2144726Service Composer fails to translate virtual machines into security-groups in VMware NSX for vSphere 6.x
  • KB 2140891Storage vMotion of Edge appliance disrupts VIX communication in VMware vCloud Networking and Security 5.5.x and NSX for vSphere 6.x
  • KB 2144476After reinstalling vCenter Server 6.0 EAM fails to push VIB’s to ESXi host with the error: Host not covered by scope anymore
  • KB 2144456Importing draft firewall rules fails after existing firewall configuration is removed by a REST API request
  • KB 2144387After upgrading to VMware NSX for vSphere 6.2.2 there is no upgrade option available for NSX Guest Introspection and NSX Data Security and the services remain at version 6.2.1
  • KB 2144420Any changes to the Primary UDLR result in the vNic_0 being shutdown on the Seconday UDLR in VMware Cross-vCenter NSX for vSphere 6.2.x
  • KB 2144236VMtools issue – Virtual machine performance issues after upgrading VMware tools version to 10.0.x in NSX/ VMware vCloud Networking and Security 5.5.x
  • KB 2144649 – IPv4 IP address do not get auto approved when SpoofGuard policy is set to Trust On First Use (TOFU) in VMware NSX for vSphere 6.2.x
  • KB 2144732 – In VMware NSX for vSphere 6.x, unpreparing Stateless ESXi host fails with the error: Agent VIB module is not installed. Cause : 15 The installation transaction failed. The transaction is not supported
  • KB 2135956 – VMware ESXi 6.0 Update 1 host fails with a purple diagnostic screen and reports the error: PANIC bora/vmkernel/main/dlmalloc.c:4923 – Usage error in dlmallocnow resolved in vSphere 6.0U2. See also the vSphere 6.0U2 Release Notes
  • KB 2126275Publishing Distributed Firewall (DFW) rules fails after referenced object is deleted in VMware NSX for vSphere 6.1.x and 6.2.x

Tracking the top issues:

How to Hyperlink KB articles

There are many, many, blogs, forums, videos channels out there that cover various VMware topics, and we commonly see our KB articles being linked from those sites.

We wanted to help those doing this with a couple of quick tips that will make your links easier to read and more resilient to potential changes in our CMS in the future.

When you open one of our KB articles and look at your URL bar, you’ll see a long, and parameterized URL. For example:

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1006427

As you can see, this URL includes unnecessary parameters for sharing and just looks long and ugly. Here’s a much cleaner format to use:

https://kb.vmware.com/kb/1006427

The beginning part is always the same, just substitute the actual KB number you wish to reference at the end.  Also note that we are now using https rather than the older and less secure http protocol.

Hope this helps those of you sharing our content; you have our thanks!

Knowledgebase improvements

Over the weekend, the VMware Knowledgebase website was upgraded to improve the customer experience in several ways.

Main objectives of the upgrade were to:

  • Upgrade the Knowledgebase application software/hardware
  • Improve stability and security of the website
  • Implement Secure Sockets Layer (SSL)
  • Implement a Captcha system into the comments area

We will continue our efforts to make the Knowledgebase system as secure and robust as our customers expect.

New NSX KBs you need to know

Here is a list of currently trending KBs for NSX for vSphere

Netcpa issues in VMware NSX for vSphere 6.x (2137005)
Symptoms:

  • Virtual machines running on the same ESXi host fails to communicate with each other
  • Virtual machine fails to communicate with the NSX Edge Gateway (ESG)
  • Routing does not appear to be functioning despite having a defined route for the NSX Edge Gateway
  • Rebooting the NSX Edge does not resolve the issue
  • Running the esxcli network vswitch dvs vmware vxlan network list –vds-name=Name_VDS command on the ESXi host displays the VNIs as down

Network connectivity issues after upgrading or repreparing ESXi hosts in a VMware NSX/VCNS environment (2107951)
Symptoms:

  • Connecting virtual machines to a logical switch fails
  • Re-connecting the virtual machine to a logical switch fails

Oracle connections times out when forwarded through the VMware NSX for vSphere 6.1.x Edge (2126674)
Symptoms:

  • Oracle connections times out when forwarded through the VMware NSX for vSphere 6.1.x Edge
  • The NSX Edge is dropping packets and client/server keeps re-transmitting the same particular packets

MSRPC connections time out when forwarded through the VMware NSX for vSphere 6.1.x Edge (2137751)
Symptoms:

  • MSRPC connections time out when forwarded through the VMware NSX for vSphere 6.1.x Edge

Linux virtual machines with NFSv3 mounts experience an operating system hang after more than 15 minutes outage on the upstream datapath (2133815)
Symptoms:

  • Applications interacting with an NFSv3 mount experience a hang on hard mounted NFSv3 mounts or an error on soft mounted NFSv3 mounts after more than 15 minute upstream data path failure
  • The virtual machine performance increasingly degrades with the time it resides in an NFS hung state

VMware ESXi 6.0 Update 1 host fails with a purple diagnostic screen and reports the error: PANIC bora/vmkernel/main/dlmalloc.c:4923 – Usage error in dlmalloc (2135956)
Symptoms:

  • VMware ESXi 6.x host fails with a purple diagnostic screen
  • Netflow function is enabled on the ESXi host

Recommended minimum VMware Tools versions for Guest Instrospection in VMware NSX for vSphere 6.x (2139740)
Known issues:

  • Windows virtual machines using the vShield Endpoint TDI Manager or NSX Network Introspection Driver (vnetflt.sys) driver fails with a blue diagnostic screen

Understanding and troubleshooting Message Bus in VMware NSX for vSphere 6.x (2133897)
Symptoms:

  • This article can be referred to when it is suspected that a communication issue between the NSX Manager and the ESXi hosts is responsible for symptoms observed such as failure to publish configuration. Examples of such symptoms are:
    • Publishing firewall rules fails
    • Some of the ESXi hosts does not have the VDR/LIF information configured through the NSX Manager

Basic Troubleshooting Guide for View Composer

Today we’d like to highlight one specific KB article related to View Composer. You might consider it a first step in addressing composer problems. The KB we’re talking about is:

VMware View Composer resolution guide (2104915)

This guide includes basic troubleshooting steps, issues observed in the process of composer installation or composer uninstall process, and finally operational issues. At the bottom of the KB there is a long list of related KBs that are also of interest if View composer problems are encountered.

  • Basic Troubleshooting Questions
  • Install and Uninstall VMware View Composer
  • VMware View Composer Error Messages
  • VMware View Composer Customization Failures
  • Unknown VMware View Composer Failures

Top 20 Articles for October 2015

Here is our Top 20 KB list for October 2015. This list is ranked by the number of times a VMware Support Request was resolved by following the steps in a published Knowledge Base article.

  1. VMware ESXi 5.x host experiences a purple diagnostic screen mentioning E1000PollRxRing and E1000DevRx
  2. Installing async drivers on VMware ESXi 5.x and ESXi 6.0.x
  3. Commands to monitor snapshot deletion in VMware ESXi/ESX
  4. After Snapshot consolidation task, virtual machines running on VMware ESXi 5.5 Update 3 host fails with the error: Unexpected signal: 11
  5. Determining Network/Storage firmware and driver version in ESXi/ESX 4.x, ESXi 5.x and ESXi 6.x
  6. ESXi 6.0 network connectivity is lost with NETDEV WATCHDOG timeouts in the vmkernel.log
  7. Permanent Device Loss (PDL) and All-Paths-Down (APD) in vSphere 5.x and 6.x
  8. Disabling the VAAI functionality in ESXi/ESX
  9. Estimating the time required to consolidate snapshots for VMware ESX and VMware ESXi
  10. Information about the error: state in doubt; requested fast path state update
  11. VMware ESXi 5.x host experiences a purple diagnostic screen mentioning E1000PollRxRing, E1000DevRx and Net_AcceptRxList
  12. Committing snapshots when there are no snapshot entries in the Snapshot Manager
  13. Recreating a missing virtual machine disk descriptor file
  14. Cloning individual virtual machine disks via the ESX/ESXi host terminal
  15. Configuring a diagnostic coredump partition on an ESXi 5.x host
  16. NFS connectivity issues on NetApp NFS filers on ESXi 5.x/6.0
  17. Accessing the vdp-configure or FLR portal page in VMware vSphere Data Protection 5.x and 6.0.x fails in modern versions of Internet Explorer, Chrome and Firefox
  18. Best practices for virtual machine snapshots in the VMware environment
  19. Unable to delete the virtual machine snapshot due to locked files
  20. Consolidating snapshots in vSphere 5.x/6.0

Top 20 Articles for September 2015

Here is our Top 20 KB list for September 2015. This list is ranked by the number of times a VMware Support Request was resolved by following the steps in a published Knowledge Base article.

  1. VMware ESXi 5.x host experiences a purple diagnostic screen mentioning E1000PollRxRing and E1000DevRx
  2. ESXi 6.0 network connectivity is lost with NETDEV WATCHDOG timeouts in the vmkernel.log
  3. Commands to monitor snapshot deletion in VMware ESXi/ESX
  4. Permanent Device Loss (PDL) and All-Paths-Down (APD) in vSphere 5.x and 6.x
  5. Installing async drivers on VMware ESXi 5.x and ESXi 6.0.x
  6. Determining Network/Storage firmware and driver version in ESXi/ESX 4.x, ESXi 5.x and ESXi 6.x
  7. Committing snapshots when there are no snapshot entries in the Snapshot Manager
  8. Information about the error: state in doubt; requested fast path state update
  9. Estimating the time required to consolidate snapshots for VMware ESX and VMware ESXi
  10. Considerations for using software iSCSI port binding in ESX/ESXi
  11. Cloning individual virtual machine disks via the ESX/ESXi host terminal
  12. Identifying and addressing Non-Maskable Interrupt events on an ESX/ESXi host
  13. Unable to delete the virtual machine snapshot due to locked files
  14. In a VMware vSphere 6 environment, the ESXi hosts display a false positive warning: Deprecated VMFS volume(s)
  15. Snapshot consolidation in VMware ESXi 5.5.x and ESXi 6.0.x fails with the error: maximum consolidate retries was exceeded for scsix:x
  16. Methods for upgrading to VMware ESXi 6.0
  17. NFS connectivity issues on NetApp NFS filers on ESXi 5.x/6.0
  18. Backing up and restoring ESXi configuration using the vSphere Command-Line Interface and vSphere PowerCLI
  19. Enabling support for SSLv3 in ESXi
  20. Deploying Windows 2008 R2 and Windows 7 templates with vmxnet3 renames the NIC as #2

Log Insight 3.0.x release – new KB content

VMW-DGRM-vCNTR-LOG-INSIGHT-103Exciting news for users of Log Insight 3.0.x. We’ve been busy updating and creating new Knowledgebase articles to support the product.

New:

Updated:

The VMware Knowledge Base

In VMware documentation, we show you how a product works, and how you can use the product to accomplish your tasks. But what about when the product isn’t working for you—when it doesn’t behave as described in the manual, or when the manual doesn’t cover a problem you encounter, or a special task you want to perform? In our procedures we try to anticipate every use case, and in our troubleshooting sections we try to foresee everything that might go wrong, but with the large and growing base of VMware users, it’s impossible to cover every situation that might occur. Every user is unique, and the number of variations—in combinations of hardware, operating systems, and use cases—is practically limitless.

One of the best resources for troubleshooting problems is the VMware Knowledge Base. Maintained by VMware Global Support Services team, the Knowledge Base (KB) contains thousands of articles authored by GSS support techs, product development and QA engineers, and Technical Communications writers. KB articles specialize in corner cases, troubleshooting, workarounds, and more. Thorny, corner-case problems are usually solved only through considerable effort, collaboration, and head pounding by some very smart and knowledgeable people. KB articles document those solutions, so no one should have to struggle with solving the same problems again.

And note: when you search the Knowledge Base, you’re searching not only KB articles, but also the library of product documentation and discussion threads in VMware Communities. This makes the Knowledge Base a great place to begin looking for answers.

So how do you use the Knowledge Base? Just go to http://kb.vmware.com/ and you’ll find that it’s pretty self-explanatory. You can browse or search by keyword, and you can filter the search by product. And if you need more detailed instructions or help, the Knowledge Base itself is well documented (just as you would expect) in a KB article—just click the Knowledge Base Help button in the upper right of the KB home window.

I will add one tip for searching: when I enter search terms, I start by trying to identify as uniquely as I can the symptoms and setup of the problem I’ve encountered—I might include the essential words of an error message, the operating system version of the VM, what seemed to trigger the problem—whatever might help filter the search to the results most likely to match my problem exactly. I err on the side of inclusiveness, using as many relevant keywords as I can. Sometimes, I get lucky and find my problem on the first try. More likely, I get no results, or just a few. So I start deleting terms, one by one, from the search. With every deletion, the search broadens, and I get more results to scan through.

One more note: be sure to take a look at the navigation bar on the right-hand side of the KB home page, where there are links to some other really great tools and services provided by the KB team, including:

  • KBTV, an ongoing series of how-to videos
  • the Weekly KB Digest, where you can check for the newest additions to the Knowledge Base

You can subscribe to KBTV, the Weekly Digest and the KB Blog via RSS, and you can follow us on Twitter at: @VMwarecares.

In short, whenever you need answers, try the Knowledge Base. It’s a terrific resource.

New NSX for vSphere Troubleshooting Guides

NSXDid you know VMware now offers a series of troubleshooting KBs on NSX for vSphere 6.x? The series covers topics ranging from NSX Controllers, Distributed Firewall (DFW), VXLAN, Guest Introspection, and NSX Manager to Edge Services Gateway and its services, including IPSec VPN, SSL VPN, and High Availability.

We’ve created a master KB of sorts to serve as a starting point: Understanding and troubleshooting VMware NSX for vSphere 6.x (2122691) This article provides a master understanding and troubleshooting information regarding VMware NSX for vSphere 6.x and all functional services. This article is targeted towards VMware Technical Support, VMware Network Administrators, Virtualization and Network Architects providing additional troubleshooting assistance when dealing with issues encountered with VMware NSX for vSphere 6.x. Bookmark this one for sure.

Additionally, the following KBs are designed to assist VMware customers and partners with fast resolution to NSX for vSphere 6.x technical support issues by describing critical diagnostic information to collect and key known issues. Come check it out.