英文:
Error dial tcp 127.0.0.1:6379: connect: connection refused when starting Redis container without Docker Compose
问题
我尝试使用以下Dockerfile运行一个Redis容器。
FROM golang:alpine as builder
LABEL maintainer="..."
RUN apk update && apk add --no-cache git
WORKDIR /app
COPY go.mod go.sum ./
RUN go mod download
COPY . .
RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o main .
FROM alpine:latest
RUN apk --no-cache add ca-certificates
WORKDIR /root/
COPY --from=builder /app/main .
EXPOSE 6379
CMD ["./main"]
然后，我运行了以下命令：
docker build -t redis .
docker run -dp 6379:6379 redis
之后，在代码的这一部分出现了错误：
s.Client = redis.NewClient(&redis.Options{
Addr: "localhost:6379",
Password: "",
DB: 0,
})
if err := s.Client.Ping().Err(); err != nil {
log.Fatalf("Failed to create a Redis client: %s", err)
}
我在Stackoverflow上阅读了一些类似的问题，并尝试将地址更改为redis:6379，但没有成功。有人可以帮我解释为什么会出现连接被拒绝的错误吗？
我阅读过的一些问题：
- https://stackoverflow.com/questions/42360356/docker-redis-connection-refused
- https://stackoverflow.com/questions/67951731/go-backend-to-redis-connection-refused-after-docker-compose-up
英文:
I tried running a Redis container with the following Dockerfile.
FROM golang:alpine as builder
LABEL maintainer="..."
RUN apk update && apk add --no-cache git
WORKDIR /app
COPY go.mod go.sum ./
RUN go mod download
COPY . .
RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o main .
FROM alpine:latest
RUN apk --no-cache add ca-certificates
WORKDIR /root/
COPY --from=builder /app/main .
EXPOSE 6379
CMD ["./main"]
Then, I ran
docker build -t redis .
docker run -dp 6379:6379 redis
Afterwards, there is an error on this side of the code:
s.Client = redis.NewClient(&redis.Options{
Addr: "localhost:6379",
Password: "",
DB: 0,
})
if err := s.Client.Ping().Err(); err != nil {
log.Fatalf("Failed to create a Redis client: %s", err)
}
I have read some similar questions in Stackoverflow and tried changing the address to redis:6379, but it didn't work. Could someone help me explain why there is this connection refused error?
Some questions I've read:
答案1
得分: 1
你的镜像是基于alpine的，而不是redis镜像。我看不到你在Dockerfile中安装redis的地方。
英文:
You image is based on alpine, not on redis image. And I can't see where do you install redis in your Dockerfile.
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