Heroku no such file to load activerecord

After you deploy your code, you need to migrate your database, make sure it is properly scaled, and use logs to debug any issues that come up. Following changes in the industry, Heroku has updated our default git branch name to main. It is always a good idea to check to see if there are any warnings or errors in the output.

If everything went well you can migrate your database. If you are using the database in your application, you need to manually migrate the database by running:. Any commands after the heroku run are executed on a Heroku dyno. You can now instruct Heroku to execute a process type. Heroku does this by running the associated command in a dyno , which is a lightweight container that is the basic unit of composition on Heroku. The heroku ps command lists the running dynos of your application:.

Heroku gives you a default web URL for simplicity while you are developing. When you are ready to scale up and use Heroku for production you can add your own custom domain. If you run into any problems getting your app to perform properly, you will need to check the logs. You can view information about your running app using one of the logging commands , heroku logs :.

You can also get the full stream of logs by running the logs command with the --tail flag option like this:. By default, new applications are deployed to a free dyno. You can find more information about this behavior by reading about free dyno behavior. To avoid dyno sleeping, you can upgrade to a hobby or professional dyno type as described in the Dyno Types article. For example, if you migrate your app to a professional dyno, you can easily scale it by running a command telling Heroku to execute a specific number of dynos, each running your web process type.

In my Gemfile:. Notice the last line on my OP was complaining about the missing myslq2 adapter. Perhaps someone could create a clone of that project with the name myslq2 just in case :. Also note that mysql2 v0. For some reason the install pointed itself to the wrong place. So ruby 1. 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. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more.

Asked 9 years, 10 months ago. Active 9 years, 5 months ago. Viewed 1k times. Improve this question. Application crashes. Not sure how to go about fixing it. Could you paste your database. Also, are you using Ruby 1. I could be wrong. I am using heroku aspen which provides 1.