It says that Redis is in a read only state:
I, [2018-06-19T18:01:55.777804 #13] INFO -- : > cd /var/www/discourse && su discourse -c 'bundle exec rake db:migrate'
Preformatted textNo connection to db, unable to retrieve site settings! (normal when running db:create) WARN: Redis is in a readonly state.' Performed a noop Failed to report error: Connection lost (ECONNRESET) 2 Dropping undeliverable message: ERR Error running script (call to f_b06356ba4628144e123b652c99605b873107c9be): @user_script:14: @user_script: 14: -READONLY You can't write against a read only slave.
I have rebooted my Elasticache and failed over… yet Redis remains in a read only state… any ideas?