![]() ![]() Therefore the wrapper program pg_ctl is provided to simplify some tasks. This shell syntax can get tedious quickly. For more information, see the postgres reference page and Chapter 20 below. The postgres program also takes a number of other command-line options. (See Section 25.3 for a more thorough discussion of log file handling.) It will help for auditing purposes and to diagnose problems. It is important to store the server's stdout and stderr output somewhere, as shown above. $ postgres -D /usr/local/pgsql/data >logfile 2>&1 & For this, use the usual Unix shell syntax: Normally it is better to start postgres in the background. If that variable is not provided either, it will fail. Without -D, the server will try to use the data directory named by the environment variable PGDATA. This must be done while logged into the PostgreSQL user account. Which will leave the server running in the foreground. The bare-bones way to start the server manually is just to invoke postgres directly, specifying the location of the data directory with the -D option, for example: Consult the package-level documentation for details. Using the package's infrastructure to start the server will be much less work than figuring out how to do this yourself. If you are using a pre-packaged version of PostgreSQL, it almost certainly includes provisions for running the server as a background task according to the conventions of your operating system. The database server program is called postgres. Client Connection Problemsīefore anyone can access the database, you must start the database server. Concealing and obscuring the name of the superuser has advantages.19.3.1. By keeping this disabled, you remove the risk of a brute force attack through a named super-user.And, that means that you could normally wreck havoc anyway. ![]() This normally means in order to log in as postgres which is the PostgreSQL equivalent of SQL Server's SA, you have to have write-access to the underlying data files. It's normally not password protected and delegates to the host operating system.You're supposed to have root to get to authenticate as postgres. No one is supposed to "log in" to the operating system as postgres. I suggest NOT modifying the postgres user. Or, $ grep "port =" /etc/postgresql/*/main/nf If you don't know the port, you can always get it by running the following, as the postgres user, SHOW port Then you can login, $ psql -h localhost -d mydatabase -U myuser -p Using the SQL administration commands, and connecting with a password over TCP $ sudo -u postgres psql postgresĪnd, then in the psql shell CREATE ROLE myuser LOGIN PASSWORD 'mypass' ĬREATE DATABASE mydatabase WITH OWNER = myuser You should probably be omitting that entirely and letting all the commands default to the user's name instead. Using createuser and createdb, we can be explicit about the database name, $ sudo -u postgres createuser -s $USER We'll be using mydatabase as the example database name. And there is no reason to break that convention if your user only needs one database. So there is a convention to make that the "user's database". Both require creating a user and a database.īy default psql connects to the database with the same name as the user. ![]()
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