We’ve recently noticed a number of cases where vSphere administrators become locked out of their accounts or receive reports of incorrect passwords in the vCenter Server Appliance. If you find yourself in this position, here are two articles that address these issues:
When attempting to log into the VMware vSphere 5.1, 5.5, or 6.0 Web Client you observe the following symptom: “User account is locked. Please contact your administrator.” This often occurs if the wrong password was entered multiple times. Waiting the default 15 minutes lockout period will allow to attempt the login again. If after multiple attempts, you are still not successful, you may need to reset the password.
When attempting to log into the vCenter Server 5.5 and 6.0 Appliance, you experience symptoms where the root account is locked out. This often occurs because the vCenter Server appliance has a default 90 password expiration policy. Steps on how to modify the password expiration policies and to unlock the password.
There’s a glitch some customers are encountering whereby a Linked Clone desktop is created on vCenter Ok, but is deleted soon after vCenter complains about either “disposable” or “internal” .vmdk files this desktop. Creating and recomposing linked clone desktops fails on VMware Horizon View 6.1.x and all older releases after you have applied an upgrade patch.
On View Administrator, recomposing of pool fails with the error:
View Composer DiskFault: Disk customization failed due to an internal error
This issue occurs when older versions of Horizon View Composer prior to VMware Horizon 6.2 attempt to communicate with VMware ESXi hosts, but SSL v3 is disabled beginning in VMware ESXi 5.5 Update 3b and 6.0 Update 1 hosts.
We’ve created a KB article to address this scenario here: Linked Clone pool creation and recompositon fails with VMware Horizon View 6.1.x and older releases (2133018)
Note: There is a workaround provided in the KB but it is not advised to use it. The workaround makes the VMware ESXi 5.5/ 6.0 hosts vulnerable to security threats reported for SSL v3
We’d like to focus today on a KB article which tries to address all the issues encountered by the users with regard to View Event Database deployment. The article includes a list of basic steps that will help you address all the issues that might be encountered during or after your deployment.
Users actions are recorded about View Manager events. If this database is not configured you would need to look in the log files to gather information about events, and the logs contain very limited information.
Configuration of the event database will fail if the user has not met the prerequisites required. Our KB article helps users meet all the required prerequisites needed, from network connectivity, to SQL server, to correct credentials for database accounts, ports and firewall status.
If you find your issue persists after validating all the 12 steps mentioned in the article, then the potential cause for the issue might be an older version of the JDBC driver. Newer versions have a number of bug fixes for SSL certificate issues. Following the steps to install new version of JDBC driver should address all the issue and completes the configuration of VMware View event database successfully. Of course, if you’re unsure or still struggling, by all means contact our support team.
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:
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
Today we will highlight one of our KB articles that is getting some traction with our Horizon View customers. The issue can occur if the ADAM database contains an invalid entry for a persistent disk.
- Attempting to import the disk from vCenter Server fails with the error:
This disk is already managed by View
- Cannot detach a Persistent User Data Disk in View Manager.
- Cannot import a Persistent Disk from vCenter Server for a virtual machine that was deleted in View Administrator.
- The Persistent disk is visible when the option to show incompatible files is selected.
If you are encountering any of these symptoms in your environment, please refer to KB article: Cannot detach a Persistent Disk in View Manager 4.5 and later (2007076). This article has a 5 star customer rating.
Note: This KB contains two Warnings. Be sure you completely understand the article, and as always check that your backups are working and are valid.
For today’s post, we’d like to focus on issues surrounding DB validation during upgrade. Many of you are running into one of the issues when moving to vSphere 6.0
Does anything here look familiar?
Today we’d like to talk about some common issues that have been seen when customers were upgrading to the latest version of our vSphere Web Client.
Perhaps you, during an upgrade, missed some products that were no longer supported (ie: removing plugins that are no longer supported), and now are proving to be reluctant to be removed. Most of these are not production stopping, though they are problematic when it is not expected.
KBs 2111224 and 211292 For customers who have upgraded and may have not seen the documentation on what other products are no longer supported in vSphere 6.0.
KB 1025360 Helps with removing plugins that are no longer compatible with vCenter 6.0.
KB 2119011 To help introduce customers to the feature changes in the vSphere Client and vSphere Web Client in 6.0 and any corresponding errors.
KB 2121185 After upgrading to vSphere 6.0 you may run into items no longer appearing in your inventory. This KB assists in troubleshooting to the services to find the cause.
KB 2121717 Troubleshoots login issues that customers may see in the vSphere environment using the Use Windows Session Credentials check box.
What is VisualEsxtop?
VisualEsxtop is a new performance monitoring tool that was recently posted on the VMware Labs Flings project. On Flings, apps and tools built by VMware engineers for fun are available for download. The intent is to make VMware Administrators’ lives easier in their daily work.
Note: VisualEsxtop is not an official VMware tool. For support and feedback please contact VMware Labs : http://labs.vmware.com/contact-us
VisualEsxtop is an enhanced version of resxtop and esxtop. VisualEsxtop can connect to VMware vCenter Server or ESX hosts, and display ESX server stats with a better user interface and more advanced features.
How to install VisualEsxtop ?
- Download visualEsxtop.zip from http://labs.vmware.com/flings/visualesxtop
- Unzip visualEsxtop.zip to folder
- Make sure Java 1.6 is in the PATH.
- On windows, to verify if Java is in the path,
Click on Start > run > TYPE cmd and press ENTER > TYPE java and press Enter.
If java is not in path, you will notice error like this –
- If JDK 1.6 or later is already installed on your machine but not in the path, here is how you add it (Instructions for Windows 7, other versions might be slightly different)
-Go to Control Panel > System and Security > System >
-Click Advanced system settings
-Click on Environmental Variables
-Click on New
-Under Edit User Variable type the following and click OK
Variable name: path
Variable value: The path to the JDK 1.6 binary folder (C:\Program Files (x86)\Java\jdk1.6.0_14\bin\ for example)
- Then, open cmd again (Start > Run> Type cmd) and type “java”. This should successfully return usage options for java command.
What can you do with VisualEsxtop?
- Real-time Performance monitoring of individual ESX(i) hosts or vCenter Server. The default interval (5 seconds) is modifiable. Type Ctrl+N and change to the new value
- Multiple sessions to different hosts or same host at the same time. This comes in very handy when you are comparing stats between hosts or between multiple views/fields.
- Flexible counter selection and filtering. This is in my opinion the best feature of this tool. You can filter results to get specific outputs. The examples in the next section will show you how to.
- Save data to a batch file. You can now pick and choose relevant tabs and fields and also chose intervals, number of snapshots for the output. Type Ctrl+S to get the save option
- Load batch output and replay them. Type Ctrl+B to load a saved csv file.
- Line chart for selected performance counters
- Embedded tooltip for counter description
- Color coding for important counters
Running the tool:
- Run visualEsxtop.sh (Linux) or visualEsxtop.bat (Windows) from the extracted files. (Note: Type export JAVA_OPTS=-Xmx2048m if loading large amounts of data)
- On the VMWARE VisualEsxtop window, select File > Connect to Live server.
- Choose the IP address of the host or vCenter and the credentials to connect.
Examples of using the tool:
The example below is listing only the devices that have DAVG value of above 20ms. The filter used is DAVG/cmd under Disk World tab. Typically we do not want DAVG (device driver level latency) to be over 20ms for lengthy period. Note that by using the filter, it is very easy to list only the devices that currently have high latency values.
The example below is listing the vmkernels and virtual machines that are currently running on vmnic0. The filter used is TEAM-PNIC under Network tab. You can also sort by %DRPTX , %DRPRX to filter for any devices reporting packet drops. Note that the vmnic number will only show up if the uplink ports are not in an etherchannel binding.
Tips on working with Charts:
- To build a new chart, under Chart tab click twice on Object Types to start to select fields
- To add a field to the chart, expand the related object and click twice on the field
- To remove a field from the current chart, click twice on the field from the bottom left window pane
- The chart allows you to add any fields from any objects at the same time. You have to be the judge regarding what fields are relevant. For example, listing DAVG and Physical CPU Core Util% in the same chart may not provide much value.
Chart view (tab) screenshot:
Where do I get tips on Troubleshooting performance on ESXi ?
Details about different fields in esxtop tool can be found in this communities blog post: Interpreting esxtop Statistics.
There are many great articles and tips on performance troubleshooting in the VMware Knowledgebase. Here are a couple that I recommend to give you a start –