我正在尝试设置一个docker-compose文件,该文件旨在用Supervisor替换运行多个进程(RQ worker,RQ dashboard和Flask应用程序)的单个Docker容器解决方案。
主机系统是Debian 8 Linux,我的docker-compose.yml
看起来像这样(我删除了所有其他条目以减少错误来源):
version: '2'
services:
redis:
image: redis:latest
rq-worker1:
build: .
command: /usr/local/bin/rqworker boo-uploads
depends_on:
- redis
" RQ-worker1"是一个Python RQ worker,试图通过localhost和端口6379连接到redis,但它无法建立连接:
redis_1 | 1:M 23 Dec 13:06:26.285 * The server is now ready to accept connections on port 6379
rq-worker1_1 | [2016-12-23 13:06] DEBUG: worker: Registering birth of worker d5cb16062fc0.1
rq-worker1_1 | Error 111 connecting to localhost:6379. Connection refused.
galileoqueue_rq-worker1_1 exited with code 1
docker ps
的输出如下所示:
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
36cac91670d2 redis:latest "docker-entrypoint.sh" 14 minutes ago Up About a minute 6379/tcp galileoqueue_redis_1
我尝试了从运行RQ worker到本地IP 0.0.0.0 / 127.0.0.1甚至localhost的所有内容。 Stackoverflow上发布的其他解决方案也不适合我(docker-compose: connection refused between containers, but service accessible from host例如。)。
这是我的docker info
输出:
Containers: 25
Running: 1
Paused: 0
Stopped: 24
Images: 485
Server Version: 1.12.5
Storage Driver: aufs
Root Dir: /var/lib/docker/aufs
Backing Filesystem: extfs
Dirs: 436
Dirperm1 Supported: true
Logging Driver: json-file
Cgroup Driver: cgroupfs
Plugins:
Volume: local
Network: null bridge host overlay
Swarm: inactive
Runtimes: runc
Default Runtime: runc
Security Options:
Kernel Version: 3.16.0-4-amd64
Operating System: Debian GNU/Linux 8 (jessie)
OSType: linux
Architecture: x86_64
CPUs: 8
Total Memory: 13.61 GiB
Name: gp-pc-201
ID: LBGV:K26G:UXXI:BWRH:OYVE:OQTA:N7LQ:I4DV:BTNH:FZEW:7XDD:WOCU
有没有人知道为什么两个容器之间的连接不起作用?
答案 0 :(得分:19)
来自localhost
的代码rq-worker1
本身为rq-worker1
,而不是redis
,您无法通过{{1}连接到redis:6379
来自localhost
。但默认情况下,rq-worker1
和redis
位于同一network,您可以将服务名称用作该网络中的域名。
这意味着,您可以使用rq-worker1
作为域名从redis
连接到rq-worker1
服务,例如:redis
您应该在client.connect(("redis", 6379))
的配置中将localhost
替换为redis
。