PostgreSqlDevelSetup

Grant Gainey edited this page Dec 12, 2016 · 2 revisions

For up-to-date information about the PostgreSQL port, see PostgreSQL. This page is now obsolete.


While a bunch of preliminary schema and app stack prep for PostgreSQL went out in Spacewalk 0.6 there were a few small problems, now fixed and soon to land in the devel repo. For those interested in trying this out and hopefully contributing here's the basic steps to get going now,

  1. Install 0.6 normally, but don't run spacewalk-setup.
  • Yes Oracle packages need to be installed but it doesn't need to be configured. We still need to sort out a lot of deps issues.
  1. Switch to Spacewalk nightly repo: http://spacewalk.redhat.com/yum/nightly/

  2. Update packages.

  3. Make sure you have PostgreSQL 8.4 installed: http://yum.pgsqlrpms.org/howtoyum.php I use a script like this to blow it away and reinstall fresh:

    yum remove -y postgresql postgresql-server rm -rf /var/lib/pgsql/ yum install -y postgresql-libs postgresql postgresql-server service postgresql initdb service postgresql start

    Enable password authentication for network connection from localhost:

    echo "local all all ident" > /var/lib/pgsql/data/pg_hba.conf echo "host all all 127.0.0.1/32 md5" >> /var/lib/pgsql/data/pg_hba.conf echo "host all all ::1/128 md5" >> /var/lib/pgsql/data/pg_hba.conf service postgresql restart chkconfig postgresql on su - postgres -c 'createuser --superuser -P spacewalk' <<EOF spacewalk spacewalk EOF su - postgres -c 'createdb spacewalk' su - postgres -c 'createlang plpgsql spacewalk'

  4. yum install python-pgsql (adding the dep to spacewalk-backend now)

  5. Run spacewalk-setup and specify postgresql for the database type. My answers file looks like:

    admin-email = you@example.com db-backend = postgresql db-user = spacewalk db-host = localhost db-password = spacewalk db-sid = spacewalk db-port = 5432 db-protocol = TCP ssl-set-org = Your Org ssl-set-common-name = Your Org Test ssl-set-org-unit = WHAT ssl-set-city = Raleigh ssl-set-state = NC ssl-set-country = US ssl-password = whatever ssl-set-email = whatever@example.com

If you have the latest code this should get past schema population, then fail during satellite activation, rhn-installation.log will report a problem with modify_org_service procedure. The procedure exists it's just probably untested and not working. :)

So next steps would be to correct the (IIRC) 2 stored procedure problems that block spacewalk-setup from completing and then we're getting quite clear to start diving into the app, fixing page by page or so.

DISCLAIMER: We're just talking about SURVIVING setup here, the app and it's thousands of queries will still not work against PostgreSQL, many stored procedures have not been ported, others have been ported but never tested in a live environment so we don't even know if they're working.

As additional help, when working on postgresql schema it's quite easy to build the schema on your devel machine and copy it to your installed spacewalk instance for each change you want to test:

cd schema/spacewalk/postgresql
make && scp main.sql root@wherever:/etc/sysconfig/rhn/postgres/main.sql

Then on the spacewalk system re-run spacewalk-setup:

su - postgres -c 'dropdb spacewalk && createdb spacewalk && createlang
plpgsql spacewalk'

spacewalk-setup --answer-file=/root/postgresql.txt --disconnected

Be warned that the "do you want to clear schema" option in spacewalk-setup won't work for postgresql, it should probably be disabled until we figure out how to do this.

Not the smoothest process in the world, but it's a start.

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