Rescue : Connection refused - Unable to connect to Redis on localhost:6379

I have followed the instructions to install resque, but now when I try to spawn a worker with this command I get a connection error:

$ QUEUE=mailer rake environment resque:work --trace

this is the error that I get:

Connection refused - Unable to connect to Redis on localhost:6379

Have you verified redis-server is running? Please don't ask me to dissect the following command, but in a terminal you can type:

ps aux | grep redis

You should then see something like:

redis 13319 0.0 0.0 2884 1056 ? Ss 10:54 0:00 /usr/bin/redis-server /etc/redis/redis.conf

If it's not running, I recommend issuing the following command:

nohup redis-server &

That will start a redis-server process and detach it from the terminal. Otherwise I believe you need to leave that terminal open the entire time you want redis-server to be running.

(Always a good idea to verify the process is running once you fire it up, so use that first command once more.)

Update: I'm not sure if this works for all versions, but on Redis Server 3.0.6 on Ubuntu 16.04, you can issue sudo service redis-server status as well. You'll receive some verbose output, so I'll not post it all, but that may be another option for some of us.

Pratik Khadloya

Have you installed redis?

Installing REDIS on Ubuntu

Ref: http://redis.io/download

Download, extract and compile Redis with:-

$ cd ~/Installations
$ curl -O http://redis.googlecode.com/files/redis-2.2.1.tar.gz
$ tar xzf redis-2.2.1.tar.gz
$ cd redis-2.2.1
$ sudo make

Install Tcl (the Tool Command Language) runtime
```
$ sudo apt-get install tcl8.5
```

Running Redis Server

$ src/redis-server
[31371] 24 Feb 10:14:03 # Warning: no config file specified, using the default config. In order to   specify a config file use 'redis-server /path/to/redis.conf'
[31371] 24 Feb 10:14:03 * Server started, Redis version 2.2.1
[31371] 24 Feb 10:14:03 # WARNING overcommit_memory is set to 0! Background save may  fail under low memory condition. To fix this issue add 'vm.overcommit_memory = 1' to /etc/sysctl.conf and then reboot or run the command 'sysctl vm.overcommit_memory=1' for this to take effect.
[31371] 24 Feb 10:14:03 * The server is now ready to accept connections on port 6379

just do it:- sudo apt-get install redis-server

Use redis-server to Start the server and then use redis-cli ping to test if the server is up. You should receive a pong if the server is started. This was taken straight from the docs. enter link description here

You should use the redis port instead "localhost" . so , wherever you want to connect the redis , use "127.0.0.1" .

来源：https://stackoverflow.com/questions/4670049/rescue-connection-refused-unable-to-connect-to-redis-on-localhost6379

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Redis

resque