og-aws | 📙 Amazon Web Services — a practical guide | AWS library

I'm assuming you've downloaded and installed PostgreSQL on your system. Use the following to point the gem to where postgres is installed. This is an example of what it'd look like on my system.

It seems like the server can't access to the content of the credentials.yml. This file is encrypted and Rails use the master key store in the master.key file to read it. So given that the master.key is not checked into version control, you need to provide it manually on the server. Please check this article https://medium.com/cedarcode/rails-5-2-credentials-9b3324851336

This section :

Deploying master key

When you move your code to a server, you need to make sure that your config/credentials.yml.enc file can be decrypted. That means that somehow you’ll need to provide Rails with your master key, given that it is not checked into version control.

There are two ways of doing that:

Option 1: Place the config/master.key file in the server. You’ll normally want to symlink this file to a shared folder in the server filesystem. Again, do not version your config/master.key file.

Option 2: create a RAILS_MASTER_KEY ENV variable. Rails will detect it and use it as your master key, e.g. in heroku: heroku config:set RAILS_MASTER_KEY=.

You should be able to use any of those indistinctly.

If you are using RBENV as you ruby manager, you can store your env var doing this :

You will create .rbenv-vars in your project folder, not your rails project folder but the folder in which is your project folder, the parent folder if you want.

After that you put your env var inside the file like this:

DATABASE_PWD=*****

no quotes, no space too before ou after the "="

For more check this link on goRails : https://gorails.com/deploy/ubuntu/18.04#capistrano

Hope this can help

Currently Ruby 3.0 is not supported with Rails, as there will be next release for Rails. You can do following and it works by installing dev branch of ruby 3. I used ruby 3.1.0dev (2021-02-14T05:09:08Z master ff527e7e32) [x86_64-darwin19] Following commands are with RVM you can use same with other softwares I tried by installing

I have found the problem and would like to write down the solution for who might have the same problem in the future...

I was following instructions of the following article because my course recommended that one: https://blog.thefirehoseproject.com/posts/switching-carrierwave-to-use-s3-with-heroku-and-localhost/

*but this is quite old one!

I was getting the error about connecting to S3server. While arranging the 'Permissions, while creating a user for Amazon IAM Dashboard, you should make three first 'off' and last one 'on'. So, you can upload images.

Block all public access -> Off

• Block public access to buckets and objects granted through new access control lists (ACLs): Off
• Block public access to buckets and objects granted through any access control lists (ACLs): Off
• Block public access to buckets and objects granted through new public bucket or access point policies: Off
• Block public and cross-account access to buckets and objects through any public bucket or access point policies: On

Happy coding!

For anyone else bumping into this, the multi_fetch_fragments gem has been merged into rails 5 itself and so the line

Solution 1:

With gem carrierwave-2.0.2 adding config.cache_storage = :file to config/initializers/s3.rb

Solution 2:

Fixed it by downgrade gem from carrierwave-2.0.2 to carrierwave-1.3.1

note:

a. storage with :fog and cache_storage is not configured(but default cache_storage :fog) does not work

b. storage with :fog and cache_storage :file works