pg_hba.conf on Linux
От | Peter Ball |
---|---|
Тема | pg_hba.conf on Linux |
Дата | |
Msg-id | 001001c06f8b$46dd0100$0300a8c0@exasites.com обсуждение исходный текст |
Ответ на | Re: postmasteralive() ("Adam Lang" <aalang@rutgersinsurance.com>) |
Список | pgsql-general |
Hi, we want to create a simple db from the command line, We ARE able to see the Cobalt Internal db's like sites, users etc. using psql, so PostgreSQL is installed and running fine. But we get the following error message (we get much the same error from phpPGadmin) . [root upload]# /usr/bin/createdb test psql: No pg_hba.conf entry for host localhost, user root, database template1 createdb: database creation failed [root upload]# We then did ... [root pgsql]# locate pg_hba.conf /var/lib/pgsql/data/pg_hba.conf /home/chiliasp/odbc/internaldb/data/pg_hba.conf /home/chiliasp/odbc/internaldb/data/pg_hba.conf~ /home/sites/site15/web/upload/pg_hba.conf /usr/lib/pgsql/pg_hba.conf.sample We then created a text file with "local trust all" and copied it into the following /usr/lib/pgsql/data/ /usr/lib/pgsql/ /var/lib/pgsql/data/ We then get a new error (after the last copy above) - A step foreward though I suspect ... Warning: Unable to connect to PostgresSQL server: Missing or erroneous pg_hba.conf file, see postmaster log for details in lib.inc.php on line 121 Error - /home/sites/site21/web/phpPgAdmin/index.php PostgreSQL said: Unable to connect to server BUT, for some reason the Cobalt did NOT like me changing it's pg_hba.conf file (even though the original was just comment lines explaining how it worked). The screen to create sites etc. and some other stuff died, but fortunatly I had a backup which we restored and now it's ok. But I'm sort of back to square 1 again. I tried echo $PGDATA but it just goes back to the prompt again. Someone told me that Cobalt puts a long password (randomly generated) onto Postgres to lock it down. we know how to get it, does it need to be specified here or somewhere? Also we are using telnet from a remote location, do we have to specify our IP or anything? Where should this pg_hba.conf file live on a standard cobalt RaQ4 (Redhat)? Is the syntax of our pg_hba.conf correct? Any help given to us would be greatly appreciated, and if you ever come to Australia, please stop in at my place for a few beers. Peter p.s. The Cobalt Knowledgebase has these instructions but say "These instructions refer to the RaQ3 ONLY!" Does anyone know what should be changed for the RAQ4? QuestionNum: 823 Product: RaQ3 Category Software Creation Date: Thu May 25 09:32:55 2000 PDT Question How can I accesss the Postgres database server on the RaQ3 to add databases, create tables, and add users? Response The following process will give the postgres user called "admin" the super-user privilage. Once this is done, a user can log into postgres using the admin account and modify itself to allow creation of users and databases. 1. telnet in as admin 2. use su - to switch to root [admin@raq3 admin]$ su - Password: [root@raq3 /root]# 3. use an editor and open the file /home/pgsql/pg_hba.conf [root@raq3 /root]# vi /home/pgsql/pg_hba.conf 4. Change local all crypt to local all trust 5. use su to switch to the user ID postgres [root@raq3 /root]# su postgres [postgres@raq3 /root]$ 6. Now run the psql program to connect to the database server. [postgres@raq3 /root]$ psql cobalt Welcome to the POSTGRESQL interactive sql monitor: Please read the file COPYRIGHT for copyright terms of POSTGRESQL [PostgreSQL 6.5.2 on i686-pc-linux-gnu, compiled by gcc egcs-2.91.66] type ? for help on slash commands type q to quit type g or terminate with semicolon to execute query You are currently connected to the database: cobalt cobalt=> 7. Enter the following commands to give super-user privilage to admin and quit. cobalt=> update pg_shadow set usesuper='t' where usename='admin'; UPDATE 1 cobalt=> q [postgres@raq3 /root]$ 8. Use the exit command to become "root" again. 9. Now open the /home/pgsql/pg_hba.conf file and change "local all trust" back to "local all crypt". It is now possible to access postgres using the postgres account "admin". The password for this account is stored in the file /etc/cobalt/.meta.id and should not be changed. If the password needs to be changed, it must be changed in the pg_shadow table and the /etc/cobalt/.meta.id file. Be sure to maintain file permissions on the file or system security could be compromised.
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