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Re: Connecting those interested in getting GT.M into the Debianrepositories

GT.M - Rock solid. Lightning fast. Secure. No compromises.

On 09/07/2010 07:53 AM, Karsten Hilbert wrote:
On Mon, Sep 06, 2010 at 11:40:55PM -0400, K.S. Bhaskar wrote:

 > Writabilty of files: I prefer for an installed version of GT.M to not
 > have *any* writable files, even if root-owned and only owner-writable.

How does GT.M persist data ?

[KSB] GT.M itself is the database engine and persists data in database files.

GT.M makes no restrictions on where database files can live - the operation of a GT.M process is entirely controlled by environment variables. So an application using GT.M would ensure that processes would have environment variables set correctly. The database engine does generate temporary files and log files (which are also pointed to by environment variables in the process' environment).

So GT.M itself can and should be installed read-only by the package (in /usr/lib/fis-gtm/<version>). GT.M's own defaults are for $gtm_tmp to point to /tmp/fis-gtm/<version> and $gtm_log to point to /var/log/fis-gtm/<version>), but these are easily overwritten by a system administrator (either by editing a file that is sourced to change the defaults, or to provide alternative values for environment variables).

-- Bhaskar


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