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The Unofficial VCF Troubleshooting Guide v2 | LAB2PROD

The Unofficial VCF Troubleshooting Guide v2 | LAB2PROD

Getting past those annoying issues when administering VMware Cloud Foundation (VCF)

This is my unofficial VMware Cloud Foundation (VCF) troubleshooting guide. This is an article that will be kept up-to-date on a regular basis.

A lot of the testing and workarounds that will be detailed in this article have been tested on VMware Cloud Foundation (VCF) 3.x. and VCF 4.x. Each section will explicitly state if it has been tested for both versions.

When performing database edits or any modifications, do so at your own risk. VMware Support may not support your environment once the changes have been made, ensure you have a snapshot before making changes!

Before diving into the content, you may be interested in some videos I have published that related to VCF.


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Stopping a Task in SDDC Manager

Let’s start off nice and easy, more often than not you may find yourself in a situation where you have a task won’t complete. That is, it is stuck in either a pending or running state in SDDC Manager.

SDDC Manager view of a task not failing or completing

In SDDC Manager you should see a task in a similar state to the above. The task may have been running endlessly or you need to stop it before it completes, this is actually quite easy to do.

Putty (or use whatever tool you prefer onto SDDC Manager), login as the vcf user and then su to root. You should see the below screen.

sddc manager putty session su root

Once you are in we need to restart the domainmanager service, to do so type in systemctl restart domainmanager, you won’t have any output return on the screen and should see the same as what is in the image below.

restarting the domainmanager service on sddc manager

You can run systemctl status domainmanager to check how long the service has been up for.

domainmanager service on sddc manager shows uptime using the status command

Wait about a minute and then log back into SDDC Manager and you should see the task that you wanted to stop now in a failed state.

This has been tested in VMware Cloud Foundation 3.x and 4.x. In VCF 4 and above you may have to also restart the operationsmanager service and commonsvc.

restarting the domainmanager service has caused the task to fail in sddc manager

Removing a task in SDDC Manager that is stuck in Running, Pending or any other non-complete state

You may sometimes find yourself needing to remove a stale task in SDDC Manager. This may be as a follow up to having to stop a task or for whatever other reason you may have.

To start, we will need to get the ID of the task that you are wanting to remove. There are a couple of ways to do this, for now let’s use the SDDC Manager GUI to get this.

Click on the task that you want to remove in SDDC Manager. After doing so, it expands the task and shows it’s subtasks.

You should now be able to see the task ID in the URL at the top of the browser.

using sddc manager's gui to find the task ID that needs to be removed.

Now that we have the task ID, putty into the SDDC Manager, once again logging in as vcf and then su to root.

The command we are going to run here is ;

curl -X DELETE http://localhost/tasks/registrations/<taskID> (replace the id with the task id from your environment.
using api to remove old tasks from sddc manager

The task has now been cleared from SDDC Manager,

Remember to take snapshots before making any changes so you can revert to them if required. But also remember to delete them once you are done with them!

This has been tested in VMware Cloud Foundation (VCF) 3.x and 4.x.

Add Host to Cluster Task Fails with License Has Expired

VCF 3.x

This is another common problem when adding a host to a cluster in SDDC Manager that you may face. The issue occurs after you have commissioned a host and are then adding it to a cluster in a workload domain.

The workflow kicks off and the first few tasks will successfully complete. Once it gets to the validation of the vMotion network (it could be at another step as well), the subtask eventually fails and it says the hosts license has expired. You can confirm this by also wither viewing the domainmanager.log file (/var/log/vmware/vcf/domainmanager/domainmanager.log) or tailing it as you kick off the workflow. Generally tailing the log as a workflow is going gives you more insight to what is happening under the hood… if you like that kind of detail!

If you do encounter this issue. it is generally due to the evaluation license on the ESXi host having lapsed.

esxi host trial evaluation license expired.

The quickest way to get past this is to apply a valid license to the host. In this case, the key that would have been applied through the SDDC Manager workflow was used directly on the host. After this, the process completed successfully.

VCF 4.x

In VCF 4.x the the workflow prompt is a lot more clear and direct. Users should quite easily figure out they have a licensing issue on the host. The image below is what you should expect if you are facing the same issue.

sddc manager host license error in workflow

Failed to validate BGP Route Distribution Distribution

This is a common error that is faced during a bring up, it may be shown as Failed to validate route distribution. If you look at the bring up log files, path can be found here, you should see something similar to the image below.

If you do get this error, start by checking the below.

  • Edge Nodes are deployed, with no issues
  • You are able to ping the Edge nodes
  • You are able to SSH onto the Edge nodes
  • Check the routing table on the Edge nodes, ensure they can see the management subnet. You will need the management subnet to be advertised into BGP
  • You may want to consider advertising a default route from the upstream or wherever BGP is configured, into BGP as well

Once you have covered this off and you are able to ping the management subnet from the Tier-0 gateway SR, you should be able to proceed past this error successfully.

This behaviour will be the same in VCF 3 and VCF 4.

ESXi Password After Imaging With VMware Imaging Appliance (VIA)

If you have chosen to image your servers using VIA, you may get stuck attempting to figure out what the password of the host is. If you have not changed any settings, then the default credentials out of the box should be.

  • Username: root
  • Password: EvoSddc!2016

This should be the same across VCF 3.x and 4.x deployments.

Renaming Objects Deployed by SDDC Manager

This section will be continuously updated, as of updating this article all versions prior to VCF 4.1 did not support renaming of any objects.

As of VCF 4.1, the only object that can be renamed that has been deployed by SDDC Manager is a vSphere cluster. All you have to do is rename the cluster, wait a few minutes and refresh SDDC Manager, this change should be reflected in the UI.

There should be additional objects that can be updated like this, however they will be in future releases, and as they are I will update this section.

Management Domain Bringup with EVC Failing

If you are attempting to do a bringup in cloud builder using EVC, this is usually because you have mismatched CPU’s in the cluster. This can be done, however if you do not stage it properly you will face issues during the bringup, which will mean you will have to start again.

You will start seeing this issue present itself once the hosts have been partially provisioned and vCenter has been deployed. It the appliance attempts to create a vSphere cluster with EVC turned on and then add the hosts to it. You should see something like this in the logs.

evc management domain cluster fail

In my experience, the reason I have seen this happen is the vCenter appliance is being deployed onto a host with a newer CPU instruction set. Then when it tries to add hosts and itself into the cluster, EVC is being flagged as being an issue.

This can be due to either the wrong EVC setting being set in the spread sheet or in my case, the order of which the hosts are being imaged and deployed. In one of my cases, I changed the order of the hosts being built, the hosts with the older CPU’s were built on first and the newer hosts last.

This can be done in the bring up spreadsheet, you enter the details of 4 hosts, here ensure the first one or however many you have are the older hosts. Doing this should allow you to successfully build the management domain using EVC.

Modifying NSX-T Tier-0 Settings

**** Performing these changes may be Ok up front, however may result in edge cluster expansion or shrinking workflow issues in future releases.

Tier-0 HA Mode Change

If the edge cluster and Tier-0 gateways have been deployed with the incorrect HA mode – either Active-Standby or Active-Active, it can be changed. In order to change these settings, the usual process of stripping the BGP peer and removing the uplink interfaces must be done first. I would also be taking notes of their current config, so they can be put back once you have changed the HA mode.

Take note of the BGP peering settings as well, also keep in mind for lifecycle of the edge nodes to still be possible, the management interface and it’s assignments must not change. If possible, it is always best to redeploy the edge cluster, however if you have a good enough reason to not redeploy, then you can complete this process. Just keep in mind the caveats listed above.

Modifying BGP Configuration

As with above, the BGP ASN and peer addresses can be changed, this should not impact anything. However you must ensure full connectivity exists between all edges and peers. Management to the edge nodes must remain as is.

Unable to Configure Edge Bridging on Edge Cluster Deployed by SDDC Manager

When attempting to configure bridging on the unused vmnics of the Edge virtual appliances deployed by SDDC Manager. You may run into the error “[Fabric] PNIC and device configurations do not match for transport node 3aab847b-5ed4-49a5-88fd-3935ef0c4171. Unconfigured DPDK fastpath interface fp-eth2 is used for connecting transport node pnics. Please provide portgroup connection for this interface fp-eth2. (Error code: 15519)” or something similar, with the transport node ID matching your environment.

You could potentially hit this issue when attempting to add a new switch in the edge node configuration and map the unused NIC. Refer to the image below.

nsx-t edge bridge config fail

This is a bug in VCF 4.1 and potentially other versions, I have only tested this in 4.1. The workaround is to deploy another edge through the NSX-T Manager directly and create a separate edge cluster from bridging. This is actually my preferred method to bridge, rather than utilize the existing edge’s unused nics.

NSX-T Sequential Host Updates Through SDDC Manager

This is a quick note, as of writing this section that SDDC Manager / VCF’s sequential updates of NSX-T host transport nodes do not allow you to configure the order in which they are updated or skip particular hosts.

Incorrect or Duplicate IP Assignment When Adding Hosts

You may sometimes get into a position where you have removed a host from SDDC Manager forcefully, or some other way. Once the host is removed people usually move on and chalk that up as a win.

Whilst it is a victory in itself as you are able to proceed and remove the lock from SDDC Manager, you have just thrown your database out of whack. This is bad because and will cause you problems when you start moving forward with deployments. For example, since you have ripped out the host, the IP addresses that SDDC Manager allocated it out of the pool may not be listed back as available again. The opposite may also happen, where if you database isn’t consistent with your deployment, it may start issuing used IP’s, which will wreak havoc with both the deployment and your network! You may notice this behaviour when adding hosts back in, and it then fails on the network connectivity tests (vMotion vmkpings).

If you are quick enough, you can catch the IP address being assigned to the host by putty’ing onto it and running esxcfg-vmknic -l and it should you what IP address has been assigned.

In order to get over this hurdle we are going to have to perform some database edits. Remember to take a snapshot at this point so you can revert if required. And also note, contact VMware Support if you prefer them to assist with this.

***You may find yourself in an unsupported state if you complete the following steps. Proceed with caution.

Logging into the PostGres (PSQL) Database

To login to the postgres database, putty onto SDDC Manager, login as the user vcf and then su into root.

Once here;

  • enter psql -h localhost -U postgres
  • tpye in \x for extended commands
  • \c platform to connect to the platform database

Finding and Fixing the Records in SDDC Manager’s Postgres Database

The steps below database steps should allow you to overcome this issue.

  • Type in select * from vcf_network where type=’VMOTION’; the output from this will show you records of vMotion network pools, like the below image.
  • You will need to identify which network pool or record in your environment needs to be updated. Once you have done that, copy the entire record to notepad to make things easier.
  • Ensure you have that snapshot to failback.
  • Now we will update the record to make sure the used IP is allocated in the record and not available in the free IP. I want to ensure is used and not free to be re-issued.
update vcf_network set used_ip_addresses='["","","","","","",""
,"",""]' where id='878a37ea-d66b-4a4b-b62a-cf1364e77e29,'; -- update the ID to suit you and make sure the command isn't wrapped in the cli.
sddc manager postgres database record of ip addresses updated
  • Here you can see the record has been updated, but notice it is still in the free_ip_addresses field, let’s fix that now.
update vcf_network set free_ip_addresses='[""]' where id='878a37ea-d66b-4a4b-b62a-cf1364e77e29';
sddc manager postgres database records updated
  • Now the free IP address and the used ip address fields are correct, restart the domainmanager service (systelctl restart domainmanager) and then about a minute later restart the common services (systemctl restart commonsvc)
  • The same process can be completed for VSAN, just replace VMOTION with VSAN. Once you are happy nothing has gone wrong, ensure you delete that snapshot.

Removing a  Host From the SDDC Manager Database

*** This section involves a database change, ensure you have taken a snapshot.  Remember if you proceed with any database changes, you may find yourself in an unsupported state.

As you did previously, putty into the SDDC Manager appliance as vcf and then su into root.  Follow the steps in the previous section to log into the postgres database.  Make sure you also have the host ID handy, you can get the ID by finding the host in the SDDC Manager UI and copying it from the URL.

Once you are in the platform context of the database, we will have to run the below commands to ensure the host is deleted from each of the tables.

delete from host_and_cluster where host_id='<hostID>';
delete from host_and_domain where host_id='<hostID>';
delete from host_and_network_pool where host_id='<hostID>';
delete from host_and_vcenter where host_id='<hostID>';
delete from host where id='<hostID>';
  • The host should now have been removed from the UI and database.
  • Clear out any old workflow task that you may have had relating to this host (add / remove workflow);
curl -X DELETE http://localhost/tasks/registrations/<taskID>

Starting a New Management Domain Bringup Using Existing Cloud Builder Appliance

You may need to use this workaround if you have started a bringup on cloud builder, but then realise you have not entered the right configuration details. This may be evident due to the bringup failing or you have otherwise been made aware.

I have had some success with snapshotting the cloud builder appliance, which can be reverted to if required. One thing to keep in mind with using this method is, ensure you do not keep the snapshot around for too long. This in itself could cause various other issues.

There are two methods to do this, the first is to retry the bringup with a modified json. This can’t be done via the UI and must be done using API. Use this method if its a minor change and the hosts do not need to be wiped.

  • Putty onto the Cloud Builder appliance
  • Navigate to the /tmp folder and have a look for a file called sddcspecxxxx.json (the xxx will have an ID for your environment)
  • If the appliance has been rebooted, this file can be generated again using the xls, this process can be seen here
  • Update the fields you require to update in the json file, once again be mindful of the changes you are making. If they are critical changes you may be better off starting again
  • Get the UUID of the failed task, this can be found as the last errored execution in the /opt/vmware/bringup/logs/vcf-bringup-debug.log
  • Run the following command for VCF versions below 4 to restart the bringup using the updated json
curl -X POST http://localhost:9080/bringup-app/bringup/sddcs/<uuid> -H "Content-Type: application/json" -d "@<path-to-json>
  • The below command is for versions 4 and above
curl -k -u admin:'<password>' -X PATCH https://localhost/v1/sddcs/<uuid> -H "Content-Type: application/json" -d "@<path-to-json>"

The second method is to similar to reverting the snapshot, but is to clear the cloud builder appliances database. Once again this is for a fresh start, where the hosts have been reimaged and you don’t want to redeploy the cloud builder appliance.

This curl command will wipe the cloud builder appliances database.

curl -X GET http://localhost:9080/bringup-app/bringup/sddcs/test/deleteAll
  • The methods listed here may also be of use to you.

Skipping Tasks in SDDC Manager Workflows

This is something that I have played around with a bit, I have sometimes been advised by support to perform these actions so I have noted down the process. The important thing to note with doing this is, it is generally OK to skip verification tasks. However, you should not be skipping configuration tasks. If you do, they need to be performed manually.

The process I outline here will be demonstrating a BGP validation error, the config was valid, however SDDC Manager in VCF 4.1 does not support 2 different ASN’s during edge cluster deployment. So the skip task detailed here is to skip the BGP verification, however I did make sure BGP was up and 100% operational!!!

First let’s have a look at what you see in SDDC Manager, in the below image BGP verification sits there and after several attempts eventually fails.

Again, as with any database change, be extremely careful. Contact support if you are uncertain and take a snapshot first!

sddc manager verify bgp fail

As mentioned earlier, this is because two ASN’s were entered for each Edge and this isn’t supported.

Log into the database

As mentioned in a previous section, we will need to log into the database. Prior to performing these actions, ensure you take a snapshot of SDDC Manager.

psql -h localhost -U postgres

Now connect to the domainmanager database.

\c domainmanager

Turn on expanded display, like so.


Retrieve Task ID’s

List all tasks that have been executed.

select * from execution;
postgres list all tasks

In the output, find the record that relates to your task and has a status of “COMPLETED_WITH_FAILURE”.

You should find something similar to the below image.

sddc manager failed  task record in database

You can think of this record and task id as the parent task, you will now need to get all the child or sub tasks of it.

To do this you can run the below command, replace the ‘ID’ with the ID of your task in the previous step.

select task_name,id,execution_order,status from processing_task where execution_id='ID' order by execution_order;

You should now see all subtasks, an example of this can be seen in the image below.

sddc manager postgres database subtasks

Update Task Status

From this output, copy records 36 and 37 to notepad or any other text editor of your choice. We will now need to mark the failed task as successful. The command to do that is below.

update processing_task set status='POSTVALIDATION_COMPLETED_WITH_SUCCESS' , execution_errors='' where id='recordIDfrompreviousstep'; 
sddc manager postgres mark failed task successful

After doing this, you will also have to mark the next task as failed, this is so the workflow picks up from this task instead. The command to do that is below.

update processing_task set status='COMPLETED_WITH_FAILURE' where id='record37ID'; 
sddc manager postgres mark task as failed

Now check your work, list the tasks again and ensure record 36 is marked as successful and 37 is marked as fail, which we can see in the image below.

sddc manager postgres list tasks

Restart Services

Now restart the domainmanager, operationsmanager and commonsvcs.service services. Wait about 3 – 5 minutes depending on your environment and log back into SDDC Manager.

sddc manager restart services

Retry Workflow

Once you log back into SDDC Manager, the task you were working on will be in an error/failed state. Simply restart the task, click to expand it and check which subtask it is running. You should now see that it is not verifying BGP any longer, but has moved onto the next task.. at least in this case.

restart failed task after modifying subtasks in postgres

And finally the workflow completes successfully.

workflow completed successfully

This process has been tested in VCF 3.x and 4.x.

VCF 4.2.1 Configuration Drift Bundle Pre-Check Failures

When upgrading to VCF 4.2.1 you may be presented with various errors. One error that I recently faced was an NSX-T audit pre-check failure. The resolution for the issue I faced is in this post.

Recreating VCF Managed vSAN Disk Groups

Depending on the circumstances, you may find issues with the way vSAN disk groups have been created on hosts managed by SDDC Manager. Refer to my post here to resolve the misconfigured vSAN disk groups.

VCF SDDC Manager Bundle Checksum Issue

Try this fix if you get stuck with the error LcmException: bundle checksum does NOT match the manifest value

Replace a Failed vSAN Diskgroup on a VCF Managed Node

Follow this process to get your VCF vSAN diskgroups back to a healthy state.

As with any of these changes, be very careful and if in doubt contact support.

Rebuild VCF Management Domain Host

The process detailed here will guide you in rebuilding a failed host that is no longer responsive.

Delete Domain Workflow Fails

The steps I used to resolve this issue are listed here.

You may find my other VCF related articles of use as well; LAB2PROD – VCF Related Articles.

VCF Domain Failed State

An end to end resolution of a VMware Cloud Foundation (VCF) domain in a failed state, preventing software upgrades can be found here.

SDDC Manager: Unable To Configure Security Global Config

This error appears when attempting to upgrade a VCF domain, this article shows you how to work through it.

VMware Cloud Foundation: Manual Product Upgrades

You should not be doing this, but if you do, read this article.

Stay tuned, this post is going to get a lot bigger as I overcome more hurdles. If you have any requests or sticking points, feel free to leave a comment and I will see what I can find for you!

19 thoughts on “The Unofficial VCF Troubleshooting Guide v2 | LAB2PROD

    • Author gravatar

      Very insightful. Thanks Shank

    • Author gravatar

      very helpful and save multiple hours waiting for support

    • Author gravatar

      This page is a life saver for me and it has saved my day countless number of times. Many thanks for publishing these hacks / workarounds.
      Appreciate your time and help.

      • Author gravatar

        Hi Ravi,

        Appreciate the kind words and that it has helped you.

        If you run into anything that isn’t listed here, please reach out via email, LinkedIn or Twitter and I’ll see what I can do!

    • Author gravatar

      Hi Shank.
      Seems you might be a good VCF resource so I thought I might run a really sticky issue by you. We have license remnants from a deleted Work Load domain. Under VMWare advisement, we deleted the defunct workload domain, then upgraded the VCF environment (mgmt and 1 other workload domain) from 4.2 to 4.3 with all the associated vRealize and vxrail updates. After the upgrade the SDDC Manager license key we associated with the deleted workload still shows as in use and we cannot delete it using any method (UI, API, CLI curl). I also cannot find a way to un-associate that key from whatever asset is using it. I did notice in the psql database in the operationsmanager database under the databasechange log table that there were changes to a table called licenseKey so it may be that the licesing validation methods changed in v 4.3? Have you run into any similar issue? I’m just looking to remove that SDDC manager license key so we can re-attempt the deployment of that workload domain.

      • Author gravatar

        Hi Mike,

        Sure I can try to assist, please keep in mind these are not instructions from VMware. Therefore, do not consider this official support!
        Also please take a snapshot first.

        1. Log into the database – psql -h localhost -U postgres
        2. Connect to operationsmanager \c operationsmanager
        3. List all currently ‘known’ licenses’ – select * from licensemanager.licensekey;
        4. If the license in question is in the list, delete it – delete from licensemanager.licensekey where id=’‘;
        If successful you will see DELETE 1.

        And that should be it! Please let me know how it goes, if it works I will add it into the article.

        PS. I have tested it, and it works for removing licenses in my environment.
        I just re-read your comment, and the instructions I provided will clear it from SDDC Manager but not the PSC/VC. If you are in fact having issues with vCenter, let me know and I can look into that.


        • Author gravatar

          Thank you for collecting all this info and publishing this guide! I’ve been dealing with expired (trial) license issues on our test environment and verified that your suggestion and a reboot resolved our problem with the SDDC manager license. I’ve added instructions that solved the 2 problems on our test environment running VCF 4.3.0 below, feel free to add them to the guide!

          Disclaimer: I do not work for VMware, instructions below are not validated by VMware. Use at your own risk: May void your warranty and support contract if applied without permission from VMware. Etc, etc, etc.
          VCF 4.3.x – Cannot remove expired licenses in SDDC manager
          Note: this procedure does not apply to the SDDC manager license.

          – You can not remove a (expired) license key, the SDDC manager reports thats the license key is in use.
          – Adding valid licenses to the SDDC manager does not resolve the problem.

          1 Make sure new valid licenses have been added to the SDDC manager
          2 Reboot the SDDC manager
          3 You should now be able to delete the expired licenses from SDDC manager
          4 Apply the new license to underlying software managed by SDDC manager. As described in the documentation, SDDC manager will not push the new licenses to the underlaying software


          VCF 4.3.x – Expired SDDC manager license cannot be deleted – Unable to deploy (or expand?) VI workload domain
          Tested on VCF 4.3.0

          – You can not remove a (expired) SDDC manager license key, as SDDC manager reports thats the license key is in use.
          – You can not deploy hosts to (new) workload domains as the wizard will not allow you to get passed the “host selection” part of the wizard. A generic error message appears while selecting the hosts.
          – Adding a new and valid SDDC manager license and rebooting the appliance does not solve the issue
          – operationsmanager.log contains errors and/or warnings stating “unable to validate license key” followed by the expired SDDC license key.

          1: Make a backup
          2: Verify that a valid SDDC Manager license has been added to the SDDC manager
          3: Remove the expired SDDC manager license from the database (operationsmanager, licensemanager.licensekey)
          4: Reboot the SDDC manager and give it some time to boot

          Result: Expired license has been removed and license usage from the old license has been moved to the new license, and you’re able to create new workload domains again.

    • Author gravatar

      Is this a typo ? should it be 36 and 77? (the same with the example below it)

      Update Task Status
      From this output, copy records 36 and 37 to notepad or any other text editor of your choice. We will now need to mark the failed task as successful. The command to do that is below.

      • Author gravatar

        Hi Kip,
        It is referring to the record numbers which above are 36 and 37.
        36 – VerifyBGPPeeringNsxApiAction – COMPLETED_WITH_FAILURE
        37 – VerifyBgpRouteDistributionNsxApiAction – INITIALIZED

        This is where the workflow failed and the task it got stuck on.

        Hope this helps.

    • Author gravatar

      Awesome. Thank you for sharing.

    • Author gravatar

      Really thank you fot this great guide
      You saved me a lot of time

      I hope that you provide me some help in an issue with vrslcm in vcf aware mode , you can find details about the issue here

      Thank you

    • Author gravatar

      Great guide you saved me a lot of time

    • Author gravatar

      Did you attempt the install of VCF 5.x ? I’m running in to a lot of issues during deployment

      • Author gravatar

        I’ve done an upgrade and install, what issues?

        • Author gravatar

          Sorry wasn’t able to reply back to you.

          The task is currently stuck at “Create vSAN Disk Groups” with a Failure. However, I manually created the disk groups and the vSAN configuration.
          Wanted to check if there is a way to skip / mark the task as successful like we do in SDDC Manager.

          Please advise.

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