Enable TSL For Redis

Jun 16 2023

Problem

My Ruby on Rails app gets this error

OpenSSL::SSL::SSLError: SSL_connect returned=1 errno=0 state=error: certificate verify failed

Reason

Redis requires TLS to connect.

Solution

Use OpenSSL::SSL::VERIFY_NONE for Redis client to tell the client it’s OK to work with a self-signed certificate, no attempt will be made to verify that the cert was signed by a known Certificate Authority.

# config/initializers/sidekiq.rb
Sidekiq.configure_server do |config|
  config.redis = { ssl_params: { verify_mode: OpenSSL::SSL::VERIFY_NONE } }
end

Sidekiq.configure_client do |config|
  config.redis = { ssl_params: { verify_mode: OpenSSL::SSL::VERIFY_NONE } }
end

Redis.new(url: 'url', driver: :ruby, ssl_params: { verify_mode: OpenSSL::SSL::VERIFY_NONE })

Another article related to this topic: How to enable SSL with on RedisLabs.