is it mandate to set up KRB5_CONFIG as Env variable for Kerberos configuration. If not what could be the workaround for this.
Since KRB5_CONFIG is already used by authentication bridging and it can't be used again, as it might mess up our current authentication bridging.
and this is set to /opt/CA/uxauth/uxauth.ini file in unix.
Yes, you do need to set the environment variable KRB5_CONFIG in orderto have kerberos access.
More, according to MIT documentation, you can set several file namesin this. Please refer to Kerberos documentation.
MIT Kerberos Documentation
Specifies the location of the Kerberos configuration file. The default is SYSCONFDIR/krb5.conf. Multiple filenames can be specified, separated by a colon; all files which are present will be read.
I hope this helps,