My questions are on PostgreSQL and PSQL on Ubuntu. Hope this is the right place. I will post it on Server Platforms as well.
...
I have installed PostgreSQL 9.1 on Ubuntu 13.04.
I am a little confused on using PSQL.
I have DBMS background with Oracle / MySQL, so I am expecting psql shell to behave with some similarities - after initial setup.
1. On the Ubuntu doc it says after install to setup password for user: postgres:
Log in using: sudo -u postgres psql postgres --- I am able to log in.
2. Change password:
\password postgres -- I am able to change password, asks for new password twice and accepts.
...
3. Now I log out of the psql shell and expect I can directly run psql giving -d / -U options.
So I run: psql -d postgres -U postgres -W
Password for user postgres: -- Here I enter password I set up above
psql: FATAL: Peer authentication failed for user "postgres"
4. Also I had expected that if I just run psql I should get the psql command line like sqlplus or mysql.
But it does not. - Says psql does not exist.
...
5. So when I log in again using: sudo -u postgres psql postgres -- I run following commands:
postgres=# select version();
version
------------------------------------------------------------------------------------------------------------
PostgreSQL 9.1.9 on x86_64-unknown-linux-gnu, compiled by gcc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3, 64-bit
postgres=# select current_user;
current_user
--------------
postgres
(1 row)
postgres=# select current_database();
current_database
------------------
postgres
(1 row)
postgres=# select inet_server_port(); -- SHOULD this not return a port number: 5432?
inet_server_port
------------------
(1 row)
postgres=# select inet_server_addr(); -- SHOULD this not return 127.0.1.1?
inet_server_addr
------------------
(1 row)
----------------------------------------------------------------------------
My confusion with 3, 4 is I am expecting to log in with psql and not use sudo to get to the psql shell.
Is there a setup aspect I am missing?
Also, as I mention in point 2, I set the password with \password.
It seems to completely ignore that.
It does as the password if I run: sudo -u postgres psql postgres -W
But logs in anyway if I run: sudo -u postgres psql postgres -- as well.
Please note I am able to create database, roles etc. grant them and such.
Put since I cannot run this command at bash:
psql -d postgres -U postgres -W
psql -U postgres (or user created)
I cannot log in with those users.
What do I do to bypass sudo as the psql command using args -d / -U / -W is makes sense to me but this command:
sudo -u postgres psql postgres -- does not.
Thank you for your help.
Mono
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