go - 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，但我不太走运。我已经在 https://github.com/davidwilde/docker-compose-golang-redis/tree/stackoverflow_question 发表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，但我的 golang 应用程序使用 gopkg.in/redis.v3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，您的应用正在向其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本地主机。

或者，使用“--net=host”选项以便在不更改代码的情况下为您的容器提供通用网络。

编辑:打字错误