Richard Sydney-Smith wrote:
Hi Doug.
Many users are haphazard in their approach until the machine fails and
then they expect to be pulled from the poo.
Done it too many times. I now will get the application to enforce an
additional integrity check. It must be backed up or else! Seems futile
to put all the effort into a database design that checks and ensures
everything except that a backup copy exists!
Essentially I need access to a database record that gives the timestamp
for the last backup.
Of course pgdump/vacuum could maintain such timestamps themselves. Is
that possible? If not then a proc in the database that calls
pgdump/vacuum and records the event is needed to give me peace of mind.
regards
Richard
I have just implemented a backup scheme on my Linux box.
/etc/cron.daily/postgres
su postgres /var/lib/pgsql/maintain
/var/lib/pgsql/maintain
vacuumdb --all --full
pg_dumpall --clean | gzip > /var/lib/pgsql/backups/pg_`date --iso`.gz
# remove any backups older than 30 days (this is a little dangerous)
tmpwatch 720 /var/lib/pgsql/backups
I created a directory
#> mkdir /var/lib/pgsql/backups
I suppose you could get the /var/lib/pgsql/maintain script to generate a
sql statement in a temporary file (e.g. /tmp/setbackupdate.sql) then use
psql to then update a record in your database with a command like (psql
-c /tmp/setbackupdate.sql)
Regards Neil.
Doug McNaught wrote:
Richard Sydney-Smith <[EMAIL PROTECTED]> writes:
pch := pchar('pg_dump -C -h '+host+' -U '+usr+' -p '+pswd+ ' -f
'+bckup_path+' '+dbase);
to postgres.
as the operator is obviously logged in how do I
(1) trap their user id
(2) Send the call to pg_dump without knowing their password?
I expect this is a well worn route and am hoping not to have to
reinvent a wheel.
I don't think it's "well-worn" at all--everyone I've ever heard of
runs pg_dump from a cron script.
Why not have a shell script run by the operator that runs pg_dump and
then calls psql to insert the log record (assuming the dump succeeds)?
Putting the logic inside of the database doesn't seem to buy you
anything AFAICS.
-Doug
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