在我的mac上,运行golang程序调用http接口报如下错误:
golang报 dial tcp lookup xx.hsmob.com no such host错误

但实际域名是通的,报错如下:

W0527 10:54:34.046009   16869 zeus.go:141] not found members in appid:xmn-sys-comm-setting-bloc-hotel, error: Get "http://cmdbv3.internal.hsmob.com/api/v3/application/xmn-sys-comm-setting-bloc-hotel/member": dial tcp: lookup cmdbv3.internal.hsmob.com: no such host
W0527 10:54:34.046236   16869 zeus.go:141] not found members in appid:xmn-sys-comm-setting-flat, error: Get "http://cmdbv3.internal.hsmob.com/api/v3/application/xmn-sys-comm-setting-flat/member": dial tcp: lookup cmdbv3.internal.hsmob.com: no such host
W0527 10:54:34.046475   16869 zeus.go:141] not found members in appid:saas-fe-login-frontend, error: Get "http://cmdbv3.internal.hsmob.com/api/v3/application/saas-fe-login-frontend/member": dial tcp: lookup cmdbv3.internal.hsmob.com: no such host

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以前写的golang项目一直使用的都是公开的module,最近使用私有gitlab仓库的module时,发现go get mod时需要输入用户名密码,开发环境还好解决,手动输一次让他记住就好了。但是项目正式上线,通过公司统一的jenkins Pipeline执行构建时,没有办法去手动输用户名密码。

Dockerfile配置

要解决这个问题,可以通过.netrc文件来处理。Dockerfile如下:

FROM mirror.ccs.tencentyun.com/library/golang:1.17 as builder

ARG GIT_USR
ARG GIT_PWD

ENV GOPROXY=https://goproxy.cn,direct
ENV GOPRIVATE=stash.xxxx.com
ENV GOOS=linux
ENV GIT_TERMINAL_PROMPT=1

WORKDIR /build
COPY . ./

RUN go env -w GOPRIVATE=stash.xxxx.com \
    && echo "machine stash.xxxx.com login ${GIT_USR} password ${GIT_PWD}" > ~/.netrc \
    && GO111MODULE=on CGO_ENABLED=0 GOOS=${GOOS} GOPROXY=${GOPROXY} go build -o=knative-audit-log

################################################################################
##                               MAIN STAGE                                   ##
################################################################################
# Copy the manager into the distroless image.
FROM mirror.ccs.tencentyun.com/library/alpine:3.13

RUN echo 'https://mirrors.cloud.tencent.com/alpine/v3.13/main' > /etc/apk/repositories \
    && echo 'https://mirrors.cloud.tencent.com/alpine/v3.13/community' >>/etc/apk/repositories \
    && apk update && apk add tzdata && ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime \
    && echo "Asia/Shanghai" > /etc/timezone

WORKDIR /usr/local/app
COPY --from=builder /build/knative-audit-log /usr/local/app/knative-audit-log
RUN chmod 755 /usr/local/app/knative-audit-log

ENTRYPOINT ["/usr/local/app/knative-audit-log"]

重点在3,4行和15行,3,4行通过传入GIT_USR和GIT_PWD两个参数到docker构建内,第15行生成.netrc配置。

现在我们就可以通过传参的方式来构建了:

docker build -t hub.docker.com/xxx/knative-audit-log:v0.1 --build-arg GIT_USR=**** --build-arg 'GIT_PWD=****' -f ./Dockerfile .

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