Table of Contents

Permissions

NOTE: calib constants get written to both experiment db and detector db, as permissions allow.

All databases will be world-readable.

Table of write-permissions:

Configuration Database	Experiment Calibration Database

Global

Detector ("Cross-experiment") Calibration Database
OPR accounts (don't need kerberos ticket, only if active experiment)	per-experiment logbook groups (need a kerberos ticket)	expert groups (only ps-data)
expert groups	expert groups

(e.g. ps-tmo and ps-data)

all write access requires a kerberos ticket, except the OPR accounts
all configdb api's will use hutch/instrument in the api which will be used for authentication
all cnf files will access ConfigDB using the opr-account style
expert groups means unix groups like ps-xpp, psdataps-data
there will be cross-hutch-expert protection: e.g. ps-xpp won't have permission to write to the TMO databases
Murali has said experts may have to do an extra step (e.g. set an environment variable) in order use a different URL/end-point for expert-group access (Feb. 25, Murali says since we use kerberos everywhere, don't need different URL).

Calibration Database Access Patterns

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