通过docker连接golang和redis

Question

我正在尝试使用 docker-compose 通过 Docker 连接 golang 和 reds，但我运气不佳。我已经在https://github.com/davidwilde/docker-compose-golang-redis/tree/stackoverflow_question 上发布了我的尝试，并在下面列出了日志。

Redis 说它已准备好接受连接，但我使用gopkg.in/redis.v3 的golang 应用程序说不。

 ~/workspace/composetest   master ●  docker-compose up

Starting composetest_db_1...

Starting composetest_web_1...

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ur kernel. This will create latency and memory usage issues with Redis. To fix this issue run the command 'echo never > /sys/kernel/mm/transparent_hugepage/enabled' as root, and add it to your /etc/rc.local in order to retain the setting after a reboot. Redis must be restarted after THP is disabled.

db_1  | 1:M 20 Nov 05:58:33.371 * DB loaded from disk: 0.000 seconds

db_1  | 1:M 20 Nov 05:58:33.371 * The server is now ready to accept connections on port 6379

web_1 | panic: dial tcp [::1]:6379: getsockopt: connection refused

web_1 |

web_1 | goroutine 1 [running]:

web_1 | main.main()

web_1 |     /go/src/app/app.go:19 +0x131

web_1 |

web_1 | goroutine 17 [syscall, locked to thread]:

web_1 | runtime.goexit()

web_1 |     /usr/local/go/src/runtime/asm_amd64.s:1696 +0x1

web_1 | panic: dial tcp [::1]:6379: getsockopt: connection refused

web_1 |

web_1 | goroutine 1 [running]:

web_1 | main.main()

web_1 |     /go/src/app/app.go:19 +0x131

web_1 |

web_1 | goroutine 17 [syscall, locked to thread]:

web_1 | runtime.goexit()

web_1 |     /usr/local/go/src/runtime/asm_amd64.s:1696 +0x1

Answer 1

所以我们有两个不同的容器，在这种情况下意味着两个不同的“本地主机”。client := redis.NewClient(&redis.Options{    Addr: "localhost:6379",    Password: "",    DB: 0,})因此，您的应用正在向自己的沙盒容器发出请求，而不是向包含 redis 的“其他”沙盒容器发出请求。你有两个选择；在您的撰写文件中提供一个映射，例如 redisdb:db，并传递该信息而不是 localhost。或者，使用“--net=host”选项为您的容器提供公共网络，而无需更改您的代码。编辑：错字