deploying redis to heroku unable to connect

ruby-on-rails heroku redis resque

19,360

Solution 1

For my setup I have /config/initializers/redis.rb with these lines:

uri = URI.parse(ENV["REDISTOGO_URL"] || "redis://localhost:6379/" )
REDIS = Redis.new(:host => uri.host, :port => uri.port, :password => uri.password)

My REDISTOGO_URL is defined in my heroku configuration. You should be able to validate that by typing:

heroku config --app my_app

You'll see in the output the value for REDISTOGO_URL

You should copy your REDISTOGO_URL directly from Redis To Go. You find it in by going to the instance in heroku and clicking on Add Ons -> Redis To Go.

Here are a couple pointers:

Verify you have your REDIS_TO_GO URL in your heroku config from the command line like I've demonstrated above.
Verify the REDIS_TO_GO URL is identical to the one assigned to that instance in the Add Ons -> Redis To Go config.

Solution 2

i fixed it. i can't believe it! my complete solution is

uri = URI.parse(ENV["REDISTOGO_URL"])
REDIS = Redis.new(:host => uri.host, :port => uri.port, :password => uri.password)
Resque.redis = REDIS

verbatim. it works without explicitly setting the url because i guess heroku tries to set it up for me already

Solution 3

I got the same thing, so, basically Sidekiq was not grabbing the REDISCLOUD_URL from vars, it was grabbing REDIS_PROVIDER.

heroku config:set REDIS_PROVIDER=REDISCLOUD_URL

It worked like a charm.

19,360

Author by

Sasha

Updated on June 06, 2022

Comments

Sasha almost 2 years
ive been trying to get resque to work with heroku. i can successfully get it to work in development mode, however when i try pushing to heroku i get
```
Errno::ECONNREFUSED (Connection refused - Unable to connect to Redis on 127.0.0.1:6379):
```
i then read and followed http://blog.redistogo.com/2010/07/26/resque-with-redis-to-go/

i put the configurations listed in the site but got the following error
```
SocketError (getaddrinfo: nodename nor servname provided, or not known):
```
i put in my initializers/resque.rb
```
Resque.after_fork = Proc.new { ActiveRecord::Base.establish_connection }

ENV["redis://redistogo:[email protected]:9254/"] ||= "redis://heroku_username:heroku_password@host:9254/"
uri = URI.parse(ENV["redis://redistogo:[email protected]:9254/"])
Resque.redis = Redis.new(:host => uri.host, :port => uri.port, :password => uri.password)
```
however it throws the error mentioned above. on my dev mode now, i get the error as well.

i tried using my heroku username (im using the add on from heroku), putting my password to heroku, and changing the port to 9254. however i keep getting the socket error now. what am i doing wrong?

help would be much appreciated. thank you

UPDATE.

@kevin

i tried
```
uri = URI.parse(ENV["my_url_string"] || "redis://localhost:9254/" )
REDIS = Redis.new(:host => uri.host, :port => uri.port, :password => uri.password)
```
in a initializer/redis.rb as well but i get the following error
```
Errno::ECONNREFUSED (Connection refused - Unable to connect to Redis on 127.0.0.1:6379):
```
are the numbers in the error, ie 127.0.0.1:6379 significant? ive checked my redis gui app and also from heroku config that my port number is 9254
```
REDISTOGO_URL       => redis://redistogo:[email protected]:9254/
```
did you have any other configuration settings? thanks for helping!

FINAL UPDATE.

i fixed it. i can't believe it! my complete solution is
```
uri = URI.parse(ENV["REDISTOGO_URL"])
REDIS = Redis.new(:host => uri.host, :port => uri.port, :password => uri.password)
Resque.redis = REDIS
```
verbatim. it works without explicitly setting the url because i guess heroku tries to set it up for me already
Sasha almost 12 years

yes ive checked using the command you said above and my url is matching. did you have any other initialization for redis? unfortunately i still get the error Errno::ECONNREFUSED (Connection refused - Unable to connect to Redis on 127.0.0.1:6379):
Sasha almost 12 years

i much appreciate your help = )
Rafael Oliveira over 10 years

Remember to add before_fork and after_fork hooks if you are using unicorn. devcenter.heroku.com/articles/rails-unicorn#caveats Also, Redis To Go docs: redistogo.com/documentation/resque
courtsimas about 10 years

For me, i had to do heroku labs:enable user-env-compile -a myapp to get it to read my ENV vars during deployment.
oky_sabeni almost 9 years

heroku config:set REDIS_PROVIDER=REDISTOGO_URL for me
GhostRider over 8 years

heroku config:set REDIS_PROVIDER=REDISTOGO_URL worked for me too (Rails 4)
d1jhoni1b almost 8 years

heroku config:set REDIS_PROVIDER=REDISTOGO_URL worked for as well too (Sinatra)