Locally I have a redis-sentinel running on with the following information

redis-cli -p 26379

127.0.0.1:26379> info

Server

redis_version:3.0.4
redis_git_sha1:00000000
redis_git_dirty:0
redis_build_id:ee774adfcab9032f
redis_mode:sentinel
os:Darwin 16.7.0 x86_64
arch_bits:64
multiplexing_api:kqueue
gcc_version:4.2.1
process_id:53388
run_id:685daaf76ce1bf378011d851afa7742d6e2da10b
tcp_port:26379
uptime_in_seconds:10
uptime_in_days:0
hz:15
lru_clock:15224205
config_file:/usr/local/opt/redis/sentinel.conf

Sentinel

sentinel_masters:1
sentinel_tilt:0
sentinel_running_scripts:0
sentinel_scripts_queue_length:0
master0:name=mymaster, 
status=odown,
address=127.0.0.1:6666,
slaves=2,
sentinels=1

This is my sentinel.conf file

I am using version 4.0.3 of the redis gem in my rails app

When I open the gem for debugging and puts the sentinels

def sentinel_detect
 puts "#@sentinels -- Sentinels"
 @sentinels.each do |sentinel|
 client = Client.new(@options.merge(
 :host => sentinel[:host],
 :port => sentinel[:port],
 :reconnect_attempts => 0,
 ))

I get [:host=>"127.0.0.1", :port=>26379, :url=>"redis://mymaster", :role=>:master] which I think is correct based on this documentation

When I start the Rails server I get No sentinels available. (Redis::CannotConnectError) even though I have a sentinel running. What am I missing? I assume some configuration? Thanks in advance