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Knowledge Base

Recommendations for vRealize Orchestrator Kerberos configuration: krb5.conf file configuration templates and VMware Identity Manager Integrations (78311)

Last Updated: 3/23/2020Categories: Best PracticesTotal Views: 4464Language:
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Details

When configuring PowerShell hosts through the vRealize Orchestrator plugin, a valid krb5.conf configuration is required.

This article assumes the PowerShell host was configured based upon the requirements detailed within VMware official product documentation:  Configure Kerberos Authentication & Configure WinRM to Use HTTPS

Note:  Other configurations are supported, such as HTTP, but are not recommended due to their insecure state.

vRealize Automation 7.x contains an embedded instance of VMware Identity Manager that contains the capability of automatically generating a valid krb5.conf configuration based upon domain information it scans when configuring an Active Directory over Integrated Windows Authentication type.

Active Directory over LDAP configurations will require manual configuration.  A reference under Solution for this configuration is provided. For vRealize Orchestrator standalone instances, the reference configuration can also be used.

Note:  It is recommended to always configure AD over IWA directory type if the domain in question is in a Forest and multiple domain logins are required from this Forest.

Solution

Reference configuration:

[libdefaults]
default_keytab_name = /etc/krb5.keytab
default_realm = AUTOLAB.LOCAL
default_tgs_enctypes = AES256-CTS AES128-CTS RC4-HMAC
default_tkt_enctypes = AES256-CTS AES128-CTS RC4-HMAC
preferred_enctypes = AES256-CTS AES128-CTS RC4-HMAC
dns_lookup_kdc = true
pkinit_kdc_hostname = <DNS>
pkinit_anchors = DIR:/var/trusted_certs
pkinit_cert_match = <EKU>msScLogin
pkinit_eku_checking = kpServerAuth
pkinit_win2k_require_binding = false
pkinit_identities = PKCS11:/opt/likewise/lib64/libpkcs11wrapper.so
#       default_realm = EXAMPLE.COM

[realms]
AUTOLAB.LOCAL = {
auth_to_local = RULE:[1:$0\$1](^AUTOLAB\.LOCAL\\.*)s/^AUTOLAB\.LOCAL/AUTOLAB/
auth_to_local = RULE:[1:$0\$1](^AUTOLAB\.LOCAL\\.*)s/^AUTOLAB\.LOCAL/AUTOLAB/
auth_to_local = DEFAULT
}
#       EXAMPLE.COM = {
#                kdc = kerberos.example.com
#               admin_server = kerberos.example.com
#       }

[logging]
kdc = FILE:/var/log/krb5/krb5kdc.log
admin_server = FILE:/var/log/krb5/kadmind.log
default = SYSLOG:NOTICE:DAEMON
[domain_realm]
.autolab.local = AUTOLAB.LOCAL
[appdefaults]
pam = {
mappings = AUTOLAB\\(.*) [email-masked]
forwardable = true
validate = true
}
httpd = {
mappings = AUTOLAB\\(.*) [email-masked]
reverse_mappings = (.*)@AUTOLAB\.LOCAL AUTOLAB\$1
}

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