lcmaps_jobrep.mod (8)

lcmaps_jobrep.mod [--test] --dsn <DatabaseServiceName> --username <databaseuser> --password <databasepassword>

The LCMAPS Jobrepository plug-in stores credentials and the resulting account mappings into a relational database. This plugin will link up all the known in-process information from LCMAPS core memory and stores it in a database. This plug-in uses ODBC (http://en.wikipedia.org/wiki/ODBC) to connect to the database.

The current state of the mappings between various credentials and Unix accounts is stored in an open database on disk, but this information can change over time through (regular) system administrative interventions. This state is now preserved in a relational database with the added benefit of being accessible by other systems, e.g. GridSAFE and build-up an easy to backup historic view on the mapping state.

Quite some systems seem to dig up data by trawling log files, e.g. to construct accounting data records. This method is subjected to the settings of the sub-systems which control the format of the log file output. Log trawling tools are interacting with the log files as a glorified API. This lowers the ability for tools, e.g. LCMAPS, to alter their log output. By offering the LCMAPS Jobrepository plug-in as an alternative with the added benefit of offering the data in a structured fine-grained database with the ability of an historic view the intend is to avoid the need and/or requirement for log file trawling.

The schema can be used to link up account mapping and/or credential mapping results originating from other credential types and link up more fine grained details from the specific work environment, i.e. a Gatekeeper and GridFTPd will be able to add service specific information together with the mapping results.

The LCMAPS Jobrepository plug-in is currently limited to MySQL and MariaDB despite its usage of the ODBC database interface. The intend is to remove this limitation and make the plug-in work with other database, e.g. PostgreSQL, Oracle and SQLite.

--test

When enabled the plug-in will only test if the connection to the database can be established through the ODBC coupling. The test will verify the correctness of the DSN, Username and Password combination. The plug-in will announce an LCMAPS SUCCESS when the connection was established, and a FAILURE when it was not able to establish the connection.

--dsn<DatabaseServiceName>

This will select the Data Source Name (DSN) that has been set in a odbc.ini file. Use the odbc.ini file to configure the database driver, server/host, port number and database name. See below for an example odbc.ini file.

--username<databaseusername>

Specifies the database username that the LCMAPS module must use to authorize itself with the database.

--password<databasepassword>

Specifies the database password that the LCMAPS module must use to authorize itself with. You can omit the setting if you set the password in the odbc.ini file.

WARNING: Be careful to assess the read permissions on the lcmaps.db file to be exclusive to the service using this file, i.e. it's probably best to make the file exclusive to root:root.

LCMAPS_MOD_SUCCESS

Success.

LCMAPS_MOD_FAIL

Failure.

Notice the --dsn <value> matches the DSN shown in the .ini section header. Also notice that the posix_enf plug-in is executed after the jobrep plug-in. The motivation is to be able to use privilege separation and with that protect the database password.

Example lcmaps.db

jobrep      = "lcmaps_jobrep.mod"
              "--dsn MySQL-test"
              "--username root"
              "--password worteltjes"

example_plugin_policy:
verifyproxy -> vomslocalgroup
vomslocalgroup -> vomspoolaccount
vomspoolaccount -> tracking_groupid
tracking_groupid -> jobrep
jobrep -> posix_enf

Example /etc/odbc.ini file:

[MySQL-test]
Description = MySQL test database
Driver      = MySQL
SERVER      = 127.0.0.1
PORT        = 3306
DATABASE    = jobrepository

Tested front-end tools and services

gLExec

globus-gridftp-server

globus-gatekeeper

Likely to work

SCAS

lcmaps-rest (only the Full-SSL interface)

gsi-openssh-server

Front-ends that will likely NOT work

WMProxy

StoRM backend

The front-ends which do not use an LCMAPS interface that provides certificates can currently not be supported. It is a requirement for the 1.5 version to be able to work from a certificate chain.

Please report any errors to the Nikhef Grid Middleware Security Team <[email protected]>.

lcmaps(8), lcmaps_jobrep.mod(8), mysql(1).

More information can be found on-line at https://wiki.nikhef.nl/grid/Site_Access_Control the Nikhef Wiki on Site Access Control and https://wiki.nikhef.nl/grid/LCMAPS the Nikhef Wiki on LCMAPS and other plug-ins.

The Jobrepository and the LCMAPS plug-ins were written by the Nikhef Grid Middleware Security Team <[email protected]>.