My understanding is that Heroku Postgres runs on top of AWS. Is it possible to configure which datacenter your database is running in? I'm also wondering if the database files are stored on an encrypted filesystem.
Yes, Heroku runs on AWS. But you are not able to specify which datacenter to run your database. For encryption look at http://www.postgresql.org/docs/current/static/pgcrypto.html.
Heroku runs out of Amazon US-East - once you've add a postgres db to your app heroku config will give you the database connection URL which you would be able to tracert on to see where it is
Related
I'm currently in the process of switching my cloud server from Heroku to Digital Ocean. However is there a way to migrate the database from the heroku server to the digital ocean one? I use postgresql for my database
I hope you already got a solution, but in case you didn’t, I’ll provide a simple guide on how I did it. I am going to assume that you have already created a postgres database on digitalocean. Also you need navigate to your project directory and log in to heroku using the heroku cli. And, you need to have postgresql installed or a psql client. Installing postgresql would do it as it comes with psql.
Step 1: Create a backup and download the backup from heroku postgres
heroku pg:backups:capture --app <app_name>
heroku pg:backups:download --app <app_name>
The first command will create a backup of your database and the second command will download it to your current directory, its a .dump file. If you would like to read more, here is an article.
Step 2: Connect to your remote (digital ocean’s) database using psql
Before you can do this, you need to go and add your machine you are connecting from to the list of database’s list of trusted sources, If you don’t, you’ll get a Connection Timed Out error. That’s because the database’s firewall doesn’t allow you to connect to the database from your local machine or resource (for security reasons).
Step 3: Import the Database
pg_restore -d "postgresql://<database_username>:<database_password>#<host>:<port>/<database>?sslmode=require" --jobs 4 -c "/path/to/dump_file.dump"
This will import your database from your dump file. Just substitute the variables will your connection parameters that you get from your dashboard. If you would like to read more, here is another article for this step.
Another thing to make clear is, sometimes, you will see some harmless error messages when running this command, but it will push through anyway. To learn more about pg_restore read this article.
And that’s it, your database has been migrated. Now, can you confirm it worked?, well, as for me, I used pgAdmin to connect to the remote database and I saw the tables and data as expected.
Hope this helps anyone with the same problem :)
I've decided to save time on the ops side of things and move to Heroku. I'm planning to have a production dyno on Heroku with a postgres database AND another dyno that reads from the same database.
However when I opened the settings of postgres, it said:
Database Credentials
Get credentials for manual connections to this database.
Please note that these credentials are not permanent.
Heroku rotates credentials periodically and updates applications where this database is attached.
What's a good way to go about this?
From Heroku Documentation,
Credentials
Do not copy and paste database credentials to a separate environment or into your application’s code. The database URL is managed by Heroku and will change under some circumstances such as:
User initiated database credential rotations using heroku pg:credentials:rotate.
Catastrophic hardware failure leading to Heroku Postgres staff recovering your database on new hardware.
Automated failover events on HA enabled plans.
It is best practice to always fetch the database URL config var from the corresponding Heroku app when your application starts. For example, you may follow 12Factor application configuration principles by using the Heroku CLI and invoke your process like so:
DATABASE_URL=$(heroku config:get DATABASE_URL -a your-app-name) your_process
This way, you ensure your process or application always has correct database credentials.
May be attaching the same database to two heroku-apps will better suit you. In this way, pg creds will be auto-managed by heroku.
I am also using this technique. I have one client-facing app and another operation-app sharing the same database instance.
You can either do this using UI or via CLI
see Share database between 2 apps in Heroku
I am building a Flask app which I have deployed on Heroku. I recently added a Postgres database which I have been running locally and storing data in. I'm now ready to add the remote Postgres database to my Heroku site.
My question is what are the steps to transfer data from local to the remote Postgres database on Heroku?
Thank you in advance!
You just need to export your local database using pg_dump and import it on heroku using the PGBackups function.
A full explanation of the procces can be found on:
https://devcenter.heroku.com/articles/heroku-postgres-import-export#import
I want to migrate my application from Heroku to my own ubuntu server. What is the correct syntax to do this using taps/heroku db:pull?
If you are moving data between a local and cloud database both of which are Postgres you should follow the instructions on Heroku's Devcenter:
https://devcenter.heroku.com/articles/migrating-data-between-plans
You would simply do heroku db:pull to pull the database from Heroku to your local db which you would then backup and restore to your own server. If it's a large database you might want to look into Heroku pgbackups as an alternative as it will provide you with a downloadable backup.
Note: If you want to migrate between databases, ie postgres => mysql then you would have to use the db:pull approach.
I have pulled the SHARED_DATABASE_URL from heroku config
SHARED_DATABASE_URL => postgres://username:xxxx#host.com/db_name
I am using pgAdmin to try to connect to it but it keeps on timing out. Do I need to specify a port? What am i missing?
You can use this command to connect to psql.
heroku pg:psql
If you are happy to change to postgres 9.1 you can use the newly launched development database, which permits connections via normal postgres tools. Read more at https://postgres.heroku.com/blog/past/2012/4/26/heroku_postgres_development_plan/
You cannot access the shared database using psql, pgadmin, etc.
Heroku offers you the choice of running on a shared or dedicated database package. The shared plan is suitable for development and staging applications. It runs Postgres 8.3. The dedicated plans are suitable for production scale applications. In addition, the dedicated databases offer a number of advantages, including direct access (via psql or any native postgres library), stored procedures, and Postgres 9 support.[source]