Once the app is downloaded and moved into the applications folder, the app can be opened. To run a server through the postgres app, the first step is to download the program. Once started, it can be connected to the same way as before using: If the default server is running it must first be stopped using the pg_ctl -D /usr/local/var/postgres stop command: The server will only start if the port is free. If a log file is not specified, events will be logged to the terminal: The command above will generate a log file like the one shown, start the server, and tie the log file to the server. Log files can be dense to read but are very useful for security and debugging purposes:

“.log” or “myData-logfile-.log”) and should be stored outside of the database that they are logging so as to avoid unnecessary risks. Generally log files are formatted to contain the date in the file name (e.g. The “Log file” is a file that will record server events for later analysis. The “Data Directory” refers to the directory that was just initialized (in this case myData). To do this use the command and substitute in for the specified values: pg_ctl -D -l start Now that the server is initialized and the log file is created, you can start the server from this directory. This will fill the myData directory with files necessary to run the server: To do this run the initdb command as shown: This means that we configure the directory and add the necessary files to run the server. Once the directory is created, the server can be initialized. For example, create a directory called myData in the home directory: To do this, first create a directory to be used as the server location. (Optional) Creating a Custom Data DirectoryĪ custom data directory can also be used for a server. This shows that the server has been started and can be connected to.

Data can be loaded and deleted from the database.This will connect to the server and access the postgres database.

It can now be accessed by typing the following command: The server will be run out of the directory /usr/local/var/postgres. This will start up a postgres server hosted locally on port 5432. Now that postgres is installed the default server can be started by running the command: pg_ctl -D /usr/local/var/postgres start This can be done by typing the following command into a terminal: Homebrew is a powerful package manager with many uses, including installing and running postgreSQL. Then ensure there are no conflicts or errors using: If Homebrew is already installed, make sure that it is up to date by running: Homebrew can be installed by running the following command in a terminal: There are two main ways to install PostgreSQL on mac OS X. How to Start a PostgreSQL Server on Mac OS X

Terminal app mac os x