There are two main ways to install PostgreSQL on mac OS X.
- Downloading the app file from postgresapp.com.
PostgreSQL Database Server is a powerful, open source relational database system. It runs on all major operating systems, including Linux, UNIX (AIX, BSD, HP-UX, SGI IRIX, Mac OS X, Solaris, SunOS. I'm trying to install the jdbc driver on my Mac OS X Lion installation. I'm running JRE 1.6.026. I've downloaded postgresql-9.0-801.jdbc4.jar and run java -jar postgresql-9.0-801.jdbc4.jar which returns Failed to load Main-Class manifest attribute from postgresql-9.0-801.jdbc4.jar Any help trying to resolve this issue would be appreciated! Download App Cleaner & Uninstaller and launch it. Confirm access to your Applications folder and it will start scanning it to find the installed apps on your Mac. Then you will see a list of apps in the left section. Find and select the PostgreSQL folder.
Using Homebrew
Homebrew can be installed by running the following command in a terminal:
/usr/bin/ruby -e '$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)'
If Homebrew is already installed, make sure that it is up to date by running: Kristen font free download mac.
brew update
Then ensure there are no conflicts or errors using:
brew doctor
Homebrew is a powerful package manager with many uses, including installing and running postgreSQL. This can be done by typing the following command into a terminal:
Now that postgres is installed the default server can be started by running the command:
This will start up a postgres server hosted locally on port 5432. The server will be run out of the directory
/usr/local/var/postgres
.It can now be accessed by typing the following command:
This will connect to the server and access the postgres database. Once this is done:
- Schemas and tables can be created
- Data can be loaded and deleted from the database
- Queries can be run
The process should look like this:
This shows that the server has been started and can be connected to.
(Optional) Creating a Custom Data Directory
A custom data directory can also be used for a server. To do this, first create a directory to be used as the server location. For example, create a directory called myData in the home directory:
Once the directory is created, the server can be initialized. This means that we configure the directory and add the necessary files to run the server. To do this run the
initdb
command as shown:This will fill the myData directory with files necessary to run the server:
Now that the server is initialized and the log file is created, you can start the server from this directory. To do this use the command and substitute in for the specified values:
The “Data Directory” refers to the directory that was just initialized (in this case myData). The “Log file” is a file that will record server events for later analysis. Generally log files are formatted to contain the date in the file name (e.g. “2018-05-27.log” or “myData-logfile-2018-05-27.log”) and should be stored outside of the database that they are logging so as to avoid unnecessary risks. Log files can be dense to read but are very useful for security and debugging purposes:
The command above will generate a log file like the one shown, start the server, and tie the log file to the server. If a log file is not specified, events will be logged to the terminal:
The server will only start if the port is free. If the default server is running it must first be stopped using the
pg_ctl -D /usr/local/var/postgres stop
command:Once started, it can be connected to the same way as before using:
Using PostgreSQL App
To run a server through the postgres app, the first step is to download the program. The app can be downloaded on postgresapp.com. Once the app is downloaded and moved into the applications folder, the app can be opened.
Open the Postgres app:
In order to start the server, click the start button.
This will start the server. Details on the server can be found by opening the server settings:
This interface shows all the essential information regarding the server. It also allows the port to be changed very easily. This is useful because multiple PostgreSQL servers can
Note: To change the port in the terminal, the ‘postgres.conf’ file (which can be found in the data directory) must be edited. This looks like the following:
Using Terminal with the PostgreSQL App
Once the app has been downloaded, command line tools can be used as well. These tools can be accessed by typing:
For example, the ‘postgres’ database on the server can be connected to using the psql tool with postgres as an argument:
Rather than typing out the full path each time however, the path can be added to a file that will allow significantly easier access to the tools, allowing the tools be accessed from any directory on the computer. To do this, the following command can be run in the terminal:
Once this is done, the ‘postgres’ database can be accessed by simply typing:
Summary
- Homebrew:
- Download/update Homebrew
- Use Homebrew to install postgres
- (Optional) Create New Data Directory
initdb
- Start Server
- App:
- Download app and move to Applications
- Run App
- (Optional) Set different port for multiple servers
- Start Server
- (Optional) Add path so that command line tools are easy to access
References
Written by: Matthew Layne
Reviewed by: Blake Barnhill , Matt David
Reviewed by: Blake Barnhill , Matt David
How To Install Postgresql On Mac
I started off programming Ruby on Rails applications on a Windows machine with an Ubuntu virtual machine running on top. But when I got my first job at a startup in California, I received a brand new shiny Macbook laptop.
I had never used a Mac before as I considered them overpriced relative to a desktop I could setup with Linux. But since that’s what I was given, that’s what I was used. One of the first things I had to do is figure out how to get Postgres up and running.
Eventually, I had to learn a good way to upgrade it as well. At my first job, I found that using Heroku’s Postgres app. At my next job, I used the homebrew package manager since that’s how our team used it.
So what follows is a mini-guide I put together on how to install postgresql on Mac as well as how to upgrade it with homebrew.
Now if you want to use Heroku’s Postgres app, it’s pretty easy and is a good alternative to homebrew.
Installing Postgres via Homebrew
This guide assumes that you have homebrew installed. If you don’t, you can find some instructions here.
Once you do that, all you have to do is issue the following command in your terminal:
$ brew install postgres
It should install the latest version of Postgres available via Homebrew. Pretty easy, right?
Upgrading Postgres via Homebrew
Ok, so let’s say you have to upgrade postgres. I had to follow these steps when I was upgrading to Postgres 9.6
Step 1 – Turn off Postgres
The first step is to turn off the postgres service if it’s running in the background.
Mac recorder app free.
$ brew services stop postgresql
Step 2 – Upgrade
Next, we’ll use homebrew to upgrade it to the latest version.
Postgresql App In Mac Os
$ brew update && brew upgrade postgresql
Step 3 – Switch
Finally, we’ll switch to the new version using the following command.
brew switch 9.6.1
You’ll see output like the following:
Step 4 – Ensuring Postgresql Starts Automatically At Startup (optional, but makes your life easier)
Now to ensure postgres starts automatically every time you start your Mac, you’ll need to do some extra setup.
I got the following setup from this blog post at tunnelsup.
Step A – You’ll need to setup LaunchAgents
Postgresql On Mac
Create the directory ~/Library/LaunchAgents if it doesn’t exist already.
Step B – Copy the plist file to ~/Library/LaunchAgents/
There’s a plist file that comes with the postgres install from homebrew.
When upgrading to 9.6.2, my plist was at /usr/local/Cellar/postgresql/9.6.2/homebrew.mxcl.postgresql.plist.
Copy the plist file to the LaunchAgents directory.
cp /usr/local/Cellar/postgresql/9.3.4/homebrew.mxcl.postgresql.plist ~/Library/LaunchAgents/
Step C – Load launchctl
Postgresql App Mac
Remove google drive app mac computer. Now use launchctl to load the file using this command:
$ launchctl load -w homebrew.mxcl.postgresql.plist
You can also use a ruby gem called lunchy. I haven’t tried it but this blog post describes the process.
General Troubleshooting Tips And Useful Commands
The following command will show you if you have multiple versions of postgres installed.
$ brew info postgresql
This troubleshooting gist describes how to migrate data from one version of Postgres to another.
Troubleshooting Guide for Rails developers
This part gives you some common troubleshooting tips if you’re a Rails developer.
Since I primarily use Postgres for Ruby on Rails work, when I was upgrading I had a connection issue described below.
If you get a connection issue with a message such as the following:
Then try running this in your terminal:
If you see the above “FATAL…”, then issue the following commands:
WARNING: Before you issue the following commands, please make sure you back up your old local Postgres data if you need it. See the gist referenced in the General Troubleshooting Tips And Useful Commands section.
$ rm -rf /usr/local/var/postgres && initdb /usr/local/var/postgres -E utf8
Godzilla unleashed wii iso download.After running the above rm and initdb Download iskysoft slideshow maker mac. commands, you should see something similar to the following.
Summary
Mac Install Postgresql
If you want to install Postgres via homebrew, follow the steps above. Make sure you backup your local data if you need it so you don’t accidentally erase something you need to keep. Other than that, let me know if you have any issues in the comments.