Unable to commission hosts due to "Certificate for host_FQDN doesn't match any of the subject alternative names"

Products

• VMware Cloud Foundation

Issue/Introduction

• Unable to commission new hosts in SDDC Manager. The workflow fails with below error

  Failed to connect to <host_FQDN> doesn't match any of the subject alternative names: [list, of, names]

• Error in /var/log/vmware/vcf/operationsmanager/operationsmanager.log

  ERROR [vcf_om,dd7f90bc5d2c4573,559c] [c.v.e.s.c.c.v.esx.EsxCommandExecutor,http-nio-127.0.0.1-7300-exec-9] Failed to connect to <host_FQDN> com.vmware.vim.vmomi.client.exception.SslException: javax.net.ssl.SSLPeerUnverifiedException: Certificate for <host_FQDN> doesn't match any of the subject alternative names: [list, of, names] Caused by: javax.net.ssl.SSLPeerUnverifiedException: Certificate for <host_FQDN> doesn't match any of the subject alternative names: [list, of, names]

Cause

Issue is caused when there is no matching FQDN for the hosts in the Certificate's subject alternative names.

Resolution

Re-generate ESXi host certificate.

 

Follow the below steps:

1. Log in to the ESXi Host Client.
2. Enable SSH on the ESXi host.
   1. In the navigation pane, click Manage and click the Services tab.
   2. Select the TSM-SSH service and click Start if not started.
3. Log in to the ESXi host using an SSH client such as Putty.
4. Regenerate the self-signed certificate by executing the following command

   /sbin/generate-certificates

5. Reboot the ESXi to apply the changes
   

   reboot

6. Verify the correct hostname is listed.

   openssl x509 -in /etc/vmware/ssl/rui.crt -noout -text

   X509v3 Subject Alternative Name should match the ESXi host FQDN
   
   Sample output

   Certificate:
       Data:
           Version: 3 (0x2)
           Serial Number: ####
           Signature Algorithm: sha256WithRSAEncryption
           Issuer: CN = CA, DC = vsphere, DC = local, C = US, ST = California, O = esx.example.com, OU = VMware Engineering
           Validity
               Not Before: MM DD HH:MIN:SEC GMT
               Not After : MM DD HH:MIN:SEC GMT
           Subject: C = US, ST = California, L = Palo Alto, O = VMware, OU = VMware Engineering, CN = esx.example.com, emailAddress = 
           Subject Public Key Info:
               Public Key Algorithm: rsaEncryption
                Public-Key: (2048 bit)
                Modulus:  00:##:##:99
                Exponent: 65537 (0x10001)
           X509v3 extensions:
               X509v3 Subject Alternative Name:
               DNS: esx.example.com
               X509v3 Authority Key Identifier:  53:##:##:53
               Authority Information Access:  CA Issuers - URI:https://esx.example.com/afd/vecs/ca
       Signature Algorithm: sha256WithRSAEncryption
       Signature Value: 32:##:c9

   
   
   

Additional Information

Regenerate the Self-Signed Certificate on All Hosts