I have a simple app, that stores some files in a node Heroku app.
I didn't know it, but every day the Heroku server is restarted and just the GitHub files survive. My ignored files not.
I know the date when I store those files in my app. Can I recover the Heroku App from that Day?.
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I have a node project deployed in a Heroku server. I have a CDN folder in the project directory that requires file changes and new pushes almost every day. Because my CDN folder holds some static resources which I build locally and then push to Heroku. Now my issue is every time I push to Heroku a new build gets started on the server. But this is not necessary for me as I am just modifying some static contents in my CDN folder. No files related to the server are being changed. Can I any way turn off that automatic building on every push to the Heroku repo? Help me guys...
I am doing a Discord.py bot and my bot needs a database to store guilds, members and stuff. I uploaded my files (a created database file too) with git to Heroku and ran my bot. When people join Discord server or something, it has to record that to the database.
When I downloaded all my files back from Heroku to my computer with heroku git:clone -a <name> I see that my database is still empty, even though a member has joined. When I run my bot on my computer directly, database works fine. Why? Does Heroku even update files when my code says so? Maybe I misunderstood something?
Maybe I misunderstood something?
Yes. You deploy code to heroku by pushing it to its git repo. That's when your blank/default database file is. When heroku starts a dyno, it essentially copies the files from the git repo into the filesystem on the new dyno. As your app works, it can read and write the files on the dyno. The important points are:
Writes to that dyno-local file are not propagated back to git.
The dyno filesystem is ephemeral. When your dyno shuts down, the files are gone and all the changes are gone with them.
If you want a persisted database that can survive dyno restarts, you should use an external database instead of a local file. For example, a Postgres add-on.
When I host the bot using Heroku it no longer calculates the JSON files (even if it makes them work they do not appear) and when I restart it is as if nothing had happened and reset everything.
How can I do?
Heroku does not store changes made to files. Heroku dynos restart every once in a while, and that is when data is lost; redeploying the app can also cause the data to be lost. Using a third-party database, such as MongoDB is recommended.
I have a PWA made with NuxtJS correctly deployed and working on Heroku.
I would like to implement a file uploader and manager so that I can manage some files in a directory (~/static/files) from my front-end through some APIs.
On localhost, it works fine so I have my directory and when I add or delete the file, it deletes or creates it from the file system (as it should).
My question is: why can't I do the same on Heroku? I mean, I tried by uploading a file and deleting it and it works but the problem comes when I restart the app (through heroku ps:restart -a appname) because when I do so it deletes the file as if it was saved in RAM and not onto the file system.
If I try to see the files in the directory where they should be through heroku run bash -a appname and then down to the directory, no file is showed.
How can I fix this?
The Heroku filesystem is ephemeral - that means that any changes to the filesystem whilst the dyno is running only last until that dyno is shut down or restarted. Each dyno boots with a clean copy of the filesystem from the most recent deploy. This is similar to how many container based systems, such as Docker, operate.
In addition, under normal operations dynos will restart every day in a process known as "Cycling".
These two facts mean that the filesystem on Heroku is not suitable for persistent storage of data. In cases where you need to store data we recommend using a database addon such as Postgres (for data) or a dedicated file storage service such as AWS S3 (for static files).
I inherited an app, and while I intend to redeploy everything correctly shortly with a host of other changes, a client of mine wants new branding up quickly on a Heroku server.
I access the server this way:
heroku run bash --app APPNAME
and I pulled down the file via wget and put it into a static files directory.
However, after doing this, the change is not reflected live. Is there anyway to make a temporary change like this without a full redeploy?
File systems on Heroku are ephemeral - the files get deleted and there is no persistence.
The Heroku filesystem is ephemeral - that means that any changes to
the filesystem whilst the dyno is running only last until that dyno is
shut down or restarted. Each dyno boots with a clean copy of the
filesystem from the most recent deploy. This is similar to how many
container based systems, such as Docker, operate.
Why Are My Files Deleted - Heroku