I am new to Django development, but I am in a situation where I need to deploy a large project on Heroku.
I ran my app in local system, it worked fine.
I pushed the same to Heroku and it also worked fine. But after few hours I open my app URL in browser , then app is saying Some thing has broken,intimated to admin.
The app worked fine before few hours, but what happened after few hours.
I just pushed my old DB backup to Heroku DB, Thats it app running fine now.
But I confused what happened to my app, I am facing this problem again and again,
how can I avoid this problem in future.
My app configuration:
psycopg2==2.4.5
Django==1.4
This could be a number of causes. It sounds more like a database issue. I would run the following command
heroku pg # TAKE NOTE OF THE HEROKU_POSTGRESQL_[COLOR]_URL
heroku pg:reset HEROKU_POSTGRESQL_[COLOR]_URL --confirm [appname]
This will reset your postgres database that is the active one, remove all tables etc.
Then I would run the regular command to get your database backup and running.
manage.py syncdb
You can also do the following
manage.py validate
This will go through your modules and tell you if any errors are present.
If that fails - enable debug in your settings.py file.
Also you can run "heroku logs" this will tell you the last few errors and statuses that have been hit with your app.
Let me know if this works, if not I will help debug further.
Related
I've built an app using Django etc. I ran into a whole bunch of problems with database on Heroku after accidentally pushing to production before running heroku run python manage.py makemigrations and heroku run python manage.py migrate.
I decided to just completely destroy the database currently on Heroku and want to recommit my app's models to heroku. My hope is to completely start from a clean slate.
I just want to make sure I do this correctly so I'm asking for clear instructions about how to recommit my app's database to Heroku after destroying the database in the dashboard.
Current error I get when I open my app online is:
settings.DATABASES is improperly configured. Please supply the NAME or OPTIONS['service'] value.
Thanks!
If you completely removed your database you'll have to provision another one. Assuming you are using Heroku Postgres¹, you can do that using the Heroku CLI like so:
heroku addons:create heroku-postgresql:hobby-dev
Here we are asking Heroku to provision the heroku-postgresql add-on using the free hobby-dev tier. Modify as needed.
You can also provision add-ons using the Dashboard if you prefer.
As part of the provisioning process, Heroku Postgres will automatically set a new DATABASE_URL for your app. As long as your project was using this variable before you deleted your old database, it should find the new database without requiring any changes.
¹If you were using a different database add-on the solution should be more or less the same. Provision a new instance of the add-on, let it set its environment variable, and if your app was using that variable before it should pick it up on its own.
I am running a Django app on Heroku, and I am getting an error that I am not getting on my local machine. I am getting a 500 error. Normally, I just see the log Django outputs on the CMD, but I can't see it in Heroku. How can I do this?
BTW, it is not a dependency cause I just pip freeze > requirements.txt.
I am not looking for the logs that appear with heroku logs —tail since these logs only show the heroku output. I am looking for the same logs that appear locally. Is this possible?
Thanks!
Go to the directory you connected the project to the heroku,
use the command,
heroku logs --tail
sometimes you might be asked to login to your heroku account.. if so use the
heroku login
complete the login process and try again
I tried to deploy my django application to heroku using the starter guide and the other manual that shows you to create your runtime, requirements, procfiles, installing django-heroku, etc. So I've now deployed my site but recieve the following error.My error I'm unsure of why this error is showing up at all especially when it worked perfectly fine locally. I haven't followed all of the django deployment checklist yet, such as setting DEBUG to False because I'd like to ensure that it works correctly before I do. If anyone could help me, that'd be much appreceiated!
You have to do migration after pushing to Heroku.
Note: Don't use local migrations. You can use Heroku bash to connect remotely and perform migrations just like you do locally.
I have created a new Heroku site and I am developing it on my Linux box, using Django. The standard "getting started" site Heroku created for me is called "gettingstarted". How can I change that / configure Heroku to forget about it?
I was reading through the Django tutorial, which explains how to create a new site (django-admin startproject my_site). I did this successfully for a demo project. Then I tried to do it under the Heroku directory, because I wanted a better name for my site than "gettingstarted". I noticed that every time I start the Heroku server under my project, it says ...using settings 'gettingstarted.settings'. I found that this is configured in manage.py and I change it.
This is the directory layout I have
/some/path/heroku_random_name/gettingstarted/settings.py
/some/path/heroku_random_name/my_site/settings.py
/some/path/heroku_random_name/my_app
This is what I have in
/some/path/heroku_random_name/manage.py
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'my_site.settings')
so I would expect that the site that matters is my_site.
I got it to the point where I can run the site successfully on my local machine, and I can tell that it using the settings from my_site. But when I deploy the project to Heroku, it does not recognize my_app until I register it in gettingstarted/settings.py. In other words, when running in Heroku, it is still using gettingstarted as the site to run.
I am new to all this, so I left gettingstarted in the project, because I am afraid to break things. But how can I configure Heroku to execute settings from my_site and not from gettingstarted?
Found it: it's configured in Procfile.
It's confusing because it's configured in one place for running locally and in a different place for running hosted at Heroku.
I've followed the instructions from Heroku's "Getting Started with Django", and successfully deployed my application on the Heroku server.
However, there wasn't any tutorial on how to test my application locally before committing and pushing any change on my codes. For example, after I make some minor changes on my css file or Django views, I want to test it on my local computer first, instead of having to do "git push heroku master" every time..
How do I do this with Heroku?
Thanks
To test your app locally you don't need to use Heroku. Simply go to the folder where your manage.py is and do:
python manage.py runserver
It will fire up a development web server with your app you can access using the following URL in your browser: http://localhost:8000.
This web server reloads automatically when you make changes to the Python code. See the Django tutorial: https://docs.djangoproject.com/en/1.7/intro/tutorial01/#the-development-server
Additionally, you might need to set some variables in your environment (export VARNAME=value) to make it work with 12-factor-style settings.