First time using Heroku. Trying to push. I have run the command:
heroku create --buildpack heroku/python
and it displayed
$ heroku create --buildpack heroku/python
Creating app... done, glacial-reef-7599
Setting buildpack to heroku/python... done
https://glacial-reef-7599.herokuapp.com/ | https://git.heroku.com/glacial-reef-7599.git
Stack trace:
$ git push heroku master
Counting objects: 129, done.
Delta compression using up to 8 threads.
Compressing objects: 100% (124/124), done.
Writing objects: 100% (129/129), 69.06 KiB | 0 bytes/s, done.
Total 129 (delta 22), reused 0 (delta 0)
remote: Compressing source files... done.
remote: Building source:
remote:
remote: ! No default language could be detected for this app.
remote: HINT: This occurs when Heroku cannot detect the buildpack to use for this application automatically.
remote: See https://devcenter.heroku.com/articles/buildpacks
remote:
remote: ! Push failed
remote: Verifying deploy...
remote:
remote: ! Push rejected to pure-badlands-9125.
remote:
To https://git.heroku.com/pure-badlands-9125.git
! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'https://git.heroku.com/pure-badlands-9125.git'
I've gotta be missing something.
I have added a requirements.txt to my root directory. It looks like this:
.git
.idea
projectapp
projectname
rango
db.sqlite3
manage.py
populate_rango.py
requirements.txt
Quick Solution
Goto heroku dashboard (https://dashboard.heroku.com/)
go inside app/project
click setting
scroll down little bit and click add build pack
select your desired buildpack (in my case i have selected heroku/nodejs).
TLDR;
Actually what heroku does is, it tries to identify what project you are deploying by looking at files in your project, such as if your project have package.json file it understands it is a nodejs project, if your project have requirements.txt file it understands it is a python project and so on, see this document to see to know what languages you can run on a heroku server
as you know to run a specific project such as a nodejs project in a computer node runtime must be installed in that computer otherwise you can not nodejs app in the computer, what heroku does it runs each of your app in a different container, it means in one container it is only one app is running and of course that container have installed nodejs, so if a container runs only one app it doesnt make sense to install all other runtimes in the container so container have only one runtime in my case it is nodejs. they have ofcourse other type of containers such as one type for python and that container have installed python runtime(of a specific version) so if my app gets installed in python container it will not work because my app in in nodejs. for this very reason somehow we need to identify the type of app in beginning to choose correct container type, mostly heroku automatically detect it but if it is failed to detect you have to tell explicitly either by going to their dashboard settings or through runtime file in your project, and as you may have noticed you have do this only once.
For future references, you must ensure that you are pushing the branch with your code to heroku master.
If you branched from your master branch and all your code is on a, say, develop, push that to the heroku master.
So instead of:
git push heroku master
You would do something like:
git push heroku develop:master
This question has important details on this How to push different local Git branches to Heroku/master
When deploying using Docker, ensure to set the stack of the app to container, as shown in the docs:
heroku stack:set container
You need to create a runtime.txt file. On the command line, in the same folder as your requirements.txt file, enter echo "python-3.5.1" > runtime.txt. Of course, make sure to switch the 3.5.1 with whichever version of Python you are using.
I can't remember how I fixed this but looking at the Date Modified in my files after I posted this question I created two files:
runtime.txt (thanks rurp) which contains:
python-3.5.2
Procfile which contains:
web: gunicorn projectname.wsgi --log-file -
This is a Django project and projectname.wsgi leads to a wsgi.py located at
projectname/wsgi.py
This contains:
import os
import signal
import sys
import traceback
import time
from django.core.wsgi import get_wsgi_application
from whitenoise.django import DjangoWhiteNoise
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "projectname.settings")
application = get_wsgi_application()
application = DjangoWhiteNoise(application)
I had the same problem even after including runtime.txt. What worked was the inclusion of the requirements.txt
In my case I was in a sub git folder. When I looked at the root .git folder - the project indeed didn't had a package.json file - so heroku could not identify the webpack
I was running a django project and for me none of the solution above worked. So finally I gave up and went to the path thats mentioned in the error and it clearly stated that heroku needs either of the below file to detect a django project:
requirements.txt
setup.py
Pipfile
I than created a requirements.txt file by copying the contents of pip freeze in the root of the project and it worked correctly.
Faced this issue today and released I had named my requirements.txt as requirements.txt.txt(I literally named the file with .txt extension when it was already a text file), I also had a runtime.txt file with the content python-3.8.7.
Renaming the requirements.txt file correctly solved my issue.
I had 3 files in my root folder: code.py, requirements.txt and runtime.txt
Adding requirements.txt even as a blank text file did the trick for me, and I also ensured there was no build pack Heroku had added.
Heroku’s Python support extends to the latest stable release from the Python 2.x and Python 3.x series.
Today, this support extends to these specific runtimes:
python-2.7.13
python-3.6.1
try to change your python version in runtime.txt
Create Pipfile file in root folder and add python version and packages required for application. check sample file here
[[source]]
url = "https://pypi.python.org/simple"
verify_ssl = true
[packages]
django = "*"
gunicorn = "*"
django-heroku = "*"
[requires]
python_version = "3.6"
Also check Configuring Django Apps for Heroku
One more thing to note is to actually commit your changes to your git repo, before you can push them to Heroku.
You might have a requirements.txt setup locally, but if it's not committed to your repo, git push heroku master will not be able to locate it.
If you've tried some of the above answers and the problem still persists;
Ensure you are git "committing" in the right directory.
For instance, if your file structure is as follow:
/src
/...
manage.py
.gitignore
Pipfile/requirements.txt
Pipfile.lock
Procfile
runtime.txt
Ensure you're git adding, committing, pushing etc. from the root directory. Since we work mostly in the src/ or main_app_directory/ we tend to forget to change directory back to root before committing.
Hey guys so I have been stuck on this issue for the past two days and I found the solution to my problem. The first fix was renaming
"requirement.txt" to "requirements.txt"
then I removed the runtime.txt
cleared buildpacks using heroku cli set the buildpack to python
heroku buildpacks:set heroku/python
and Boom! it got uploaded an everything works now
Related
I've built a flask app and I tread to deploy it on Heroku but I got this error:
(venv) MacBook-Pro-alkhas-b-shosha:myApp joodi$ git push heroku master
error: src refspec master does not match any.
error: failed to push some refs to 'https://git.heroku.com/<app-name>.git'
I think the problem because I wrote all the application on one file.
This my app structure:
all Flask code is in flasker.py.
So when I start writing on Procfile I got confused, I didn't know what I supposed to write on it, here what I wrote
web: gunicorn myApp:app
What can I do without changing the structure?
There are a couple of issues here.
Git issue
error: src refspec master does not match any.
It looks like you haven't committed any code (Git can't find a master branch on your local system). git push operates on commits, not files.
Make sure to commit your code locally before trying to push to Heroku.
Procfile issue
Also, update your Profile to point to your flasker.py file. Assuming your Flask object is called app:
web: gunicorn flasker:app
Your error message hints to you not being on the master branch.
Try this:
git push heroku your_branch:master
I'm trying to deploy a Django/Python application that runs locally, but will not deploy to Heroku. When trying to deploy, I receive the error:
App not compatible with buildpack: https://codon-
buildpacks.s3.amazonaws.com/buildpacks/heroku/python.tgz
I've tried multiple solutions to this issue. Currently my build pack is set to the Python build pack. (heroic build packs returns heroku/python). I have a Procfile, requirements.txt, runtime.txt, and Pipfile.lock, all of which usually resolve this issue.
Procfile:
web: gunicorn foodForThought.wsgi:application --log-file -
requirements.txt:
Django==1.11.8
pytz==2017.3
runtime.txt:
python-3.6.0
Pipfile.lock:
[requires]
python_full_version = "3.6.0"
All the aforementioned files are located in my home directory, and I'm also working in a virtual environment. Why is this error occurring?
So here's what I've come up with. I was also stuck with this problem until I found this command.
heroku buildpacks:add --index 1 heroku/python
The trick is to add this buildpack before you commit to the Heroku git repo. You can follow the steps like so:
git add .
git commit -am "First Commit"
heroku git:remote -a yourapp
heroku buildpacks:add --index 1 heroku/python
git push heroku master
I found this through the Heroku docs!
I'm trying to deploy a python script, but I get this error
Failed to detect app matching https://codon-buildpacks.s3.amazonaws.com/buildpacks/heroku/python.tgz buildpack
What files I have right now:
automation.py
A simple python script which imports praw, time, os and inspect.
requirements.txt
As described in the Heroku documents, I have created this file by running pip freeze > requirements.txt, containing:
astroid==1.5.2
colorama==0.3.8
isort==4.2.5
lazy-object-proxy==1.2.2
mccabe==0.6.1
praw==4.4.1.dev0
prawcore==0.10.1
pylint==1.7.1
requests==2.13.0
six==1.10.0
update-checker==0.16
wrapt==1.10.10
runtime.txt
Again as described in Heroku documents, this file contains the runtime for my script, containing:
python-3.6.0
I have changed my remote to heroku, added all files, commited and pushed to heroku master, but I get the error mentioned in the beginning. Is there something I'm doing wrong? I have seen this answer, but I'm not convinced. Would like to avoid any frameworks if possible.
git ls-files output
.gitignore
LICENSE
README.md
requirements.txt
runtime.txt
automation.py
In addition to runtime.txt and requirements.txt, a Procfile is required - that's how Heroku knows what script to run for your app. Without it, Heroku doesn't know automation.py is anything special. Note though - if your script doesn't listen on any port, define the process name as "worker" or anything other than "web". If you define it as "web" Heroku will expect it to bind to an externally visible port (not on localhost). If Heroku doesn't detect a port bind within 60 seconds, it reports the app as failed to start
I'm running accross an error trying to push my Django project up to Heroku and I was looking to see if anyone had any insight.
! Heroku push rejected, no Cedar-supported app detected
I am guessing it is because of my folder structure in the git repo but I am not sure. My project is setup like this:
/subfolder/djangoproject/
/subfolder/requirements.txt
My Proc file content looks like this:
web: python manage.py runserver 0.0.0.0:$PORT --noreload --settings=djangoproject.settings.heroku
I have my project setting split and they work fine on my local. (In other words I having a setting directory with an init.py in it.)
I tried this:
/Procfile
and this:
/subfolder/Procfile
but neither worked.
Can this folder structure be the culprit? I was under the impression that the requirements.txt was how Heroku found where the project folder was.
Thanks
I wanted to add my solve for the first issue I had and then post the new issue I am having.
The solve I first did was to move the Procfile and requirements.txt files to the root level of the project. The second thing I did was edit the Procfile in so the path to the manage.py script was to the proper location
web: python subfolder/djangoproject/manage.py runserver 0.0.0.0:$PORT --noreload --settings=djangoproject.settings.heroku
I've hit a new error now when trying to run a syncdb. It seems to go through the process but nothing takes. In other words, if I run syncdb once and then run it a second time, it wants to set everything up all over again. Any thoughts on what I may have configures wrong to make the DB not save it's data? Should I use the setting for the DB from the dashboard or keep this line in the Django config:
import dj_database_url
DATABASES['default'] = dj_database_url.config()
Thanks
You need requirements.txt or setup.py in the root of the repo.
See https://github.com/heroku/heroku-buildpack-python/blob/master/bin/detect
Following the Heroku tutorial but I have already created a rather complex Django app that I want to upload. I have copied it to a fresh folder and issued git init successfully, along with adding the files to a commit. I do heroku create --stack cedar so I get a site then issue the git push heroku master. I get the following:
Counting objects: 6756, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (5779/5779), done.
Writing objects: 100% (6756/6756), 6.98 MiB | 953 KiB/s, done.
Total 6756 (delta 2210), reused 0 (delta 0)
-----> Heroku receiving push
-----> Removing .DS_Store files
-----> Python app detected
! Django app must be in a package subdirectory
! Heroku push rejected, failed to compile Python app
To git#heroku.com:sitename.git
! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'git#heroku.com:sitename.git'
Inside the Heroku folder I have my init, settings, manage, and urls.py then I have the folder OmniCloud_App which holds that particular app's admin, models, Templates (folder), static (folder), tests, urls, and views. Why doesn't Heroku recognize the app?
Chris,
Specifically for Django heroku expects you to check in the directory that your Django project lives in (this directory should live at the same level as your requirements.txt). An ls might look something like:
$ ls
requirements.txt appfolder
$ ls appfolder
__init__.py manage.py settings.py urls.py
This should allow you to deploy an existing app then configure your Procfile as needed.
I have a sample Django application that I've deployed to Heroku here:
https://github.com/synedra/django-linkedin-simple
I have a blog post on deploying this system to heroku here:
http://www.princesspolymath.com/princess_polymath/?p=511
Note that my post was more about getting the auth working. The Heroku Django tutorial itself (linked from my blog post) should be more than sufficient. You might walk through that and then see where your setup differs.