However, because those hosts do not store any state, the signed certificate is stored by the Auto Deploy server in its local certificate store. The process is similar for hosts that are provisioned with Auto Deploy. When the host is added to the vCenter Server system, it is provisioned with a certificate that is signed by VMCA as the root CA. When you boot an ESXi host from installation media, the host initially has an autogenerated certificate. A red alarm is raised if the certificate is in the Expiration Imminent state (less than two months). A yellow alarm is raised if the certificate is in the Expiring Shortly state (less than eight months).
You can view the information for all hosts that are managed by a vCenter Server or for individual hosts. You can view information about certificate expiration for certificates that are signed by VMCA or a third-party CA in the vSphere Client. Some vCenter 6.x and later services might not work correctly in thumbprint mode. Even expired certificates are accepted.ĭo not use this mode unless you encounter problems that you cannot resolve with one of the other two modes. In this mode, vCenter Server checks that the certificate is formatted correctly, but does not check the validity of the certificate. VSphere 5.5 used thumbprint mode, and this mode is still available as a fallback option for vSphere 6.x. Note: Unless you change the certificate mode to Custom Certificate Authority, VMCA might replace custom certificates, for example, when you select
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