Rake任务在Rails生产应用的cron作业中失败

Question

我使用每当gem设置一个cron作业，每周备份一次Rails应用程序的数据库。它在开发中工作得很好，但在生产中却失败了:

rake aborted!
ArgumentError: Missing `secret_key_base` for 'production' environment, set this string with `rails credentials:edit`

错误提示"缺少secret_key_base"，但我已经在.rbenv-vars文件中设置了生产环境变量，并且应用程序运行正常。

这是产生上述错误的cron作业(为了测试的目的，它被设置为每分钟一次)

PATH=/home/deploy/wiki/doc_app/shared/bundle/ruby/2.6.0/bin:/home/deploy/.rbenv/versions/2.6.5/bin:/home/deploy/.rbenv/libexec:/home/deploy/.rbenv/plugins/ruby-build/bin:/home/deploy/.rbenv/plugins/rbenv-vars/bin:/home/deploy/.rbenv/shims:/home/deploy/.rbenv/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
* * * * * /bin/bash -l -c 'cd /home/deploy/wiki/doc_app/releases/20210209173234 && RAILS_ENV=production bundle exec rake backup:db --silent >> log/cron_log.log 2>&1'
# End Whenever generated tasks for: /home/deploy/wiki/doc_app/releases/20210209173234/config/schedule.rb at: 2021-02-09 11:41:37 -0600

当我在shell中运行生成的命令时，它工作正常，并且运行rake任务没有问题。我遗漏了什么?

schedule.rb

set :output, "log/cron_log.log"
env :PATH, ENV['PATH']
every 1.minute do
rake "backup:db"
end

backup.rake

namespace :backup do
desc "backup database"
task db: :environment do
settings = Rails.configuration.database_configuration[Rails.env]
file_name = "dump-#{Time.now.strftime('%Y%m%d%H%M%S')}.sql"
path = "#{ENV['HOME']}/backups/"
full_path = path + file_name
Backup.create!(path: full_path, name: file_name)
system "if [ ! -d #{path} ]; then mkdir #{path}; fi; mysqldump -u #{settings['username']} -p#{settings['password']} --databases #{settings['database']} --ignore-table=#{settings['database']}.backups > #{full_path}"
end
end

Answer 1

我通过将环境变量从rbenv-vars切换到Figaro gem来解决这个问题。现在一切正常。