Ubuntu 17.04下Django Channels集成Redis遇连接错误求助

Let's tackle your problem from two angles: first, getting Redis running without Docker (since that's your immediate need), and then fixing the Docker installation if you still want to use that approach later.

Option 1: Install Redis Directly (No Docker Needed) #

This is the simplest way to get Redis up and running for Django Channels on Ubuntu 17.04:

1. Update your package list

   sudo apt-get update
   

2. Install the Redis server package

   sudo apt-get install redis-server
   

3. Verify Redis is running
   By default, Redis starts automatically after installation and listens on port 6379 (exactly what Channels requires). Test the connection with:

   redis-cli ping
   

   You should get a PONG response if everything's working.

4. Manage the Redis service

   • Check status: sudo systemctl status redis-server
   • Start if it's not running: sudo systemctl start redis-server
   • Set it to start on boot: sudo systemctl enable redis-server

5. Confirm Channels Configuration
   Make sure your settings.py has the correct Redis channel layer setup:

   CHANNEL_LAYERS = {
       "default": {
           "BACKEND": "channels_redis.core.RedisChannelLayer",
           "CONFIG": {
               "hosts": [("127.0.0.1", 6379)],
           },
       },
   }
   

Once Redis is running, the [Errno 111] Connect call failed error should disappear, since Django Channels can now reach the Redis server on port 6379.

Option 2: Fix Docker Installation on Ubuntu 17.04 #

If you still want to use Docker for Redis, the issue is that you installed the old/unofficial Docker package from Ubuntu's default repos. Here's how to install the official Docker CE:

1. Uninstall existing Docker packages

   sudo apt-get remove docker docker-engine docker.io containerd runc
   

2. Install required dependencies

   sudo apt-get install apt-transport-https ca-certificates curl software-properties-common
   

3. Add Docker's official GPG key

   curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -
   

4. Add Docker's official repository
   Ubuntu 17.04 uses the codename zesty, so run:

   sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu zesty stable"
   

5. Update package list and install Docker CE

   sudo apt-get update
   sudo apt-get install docker-ce
   

6. Test Docker works

   sudo docker run hello-world
   

   If you see a welcome message, Docker is installed correctly. Now you can run the Redis command from the tutorial:

   sudo docker run -p 6379:6379 -d redis:2.8
   

内容的提问来源于stack exchange，提问作者Elgin Cahangirov