kerberos auth parameter to pass ticket cache?

[zenoran]

Need a way to be able to specify a credential cache file as part of authentication when multiple files are present within the cache directory. I found this can be accomplished by setting the KRB5CCNAME environment variable, but this doesn't really seem like a good practice to be altering the environment all throughout the application to make connections across various credentials.

Is there a way to pass a parameter to the Producer & Consumer config to override KRB5CCNAME? Or possibly some way to alter the default_ccache_name profile variable in [libdefaults] section of the krb5.conf situationally?