一,首先将http脚本转换成linux下能运行的二进制文件
zhaojinqiao@B-LBE6LVDL-1748 03 % ls httpserver httpserver.go httpsev main main.go zhaojinqiao@B-LBE6LVDL-1748 03 % env GOOS=linux go build -o httpser httpserver.go zhaojinqiao@B-LBE6LVDL-1748 03 % ls httpser httpserver httpserver.go httpsev main main.go
二,将httpsev拷贝到linux环境下的httpsever文件夹
Dockerfile内容如下:
FROM ubuntu:latest COPY httpsev /httpsev EXPOSE 80 ENTRYPOINT /httpsev
三,镜像构建:
docker build -t http .
四,进入这个镜像:
docker run -it --entrypoint /bin/sh http:latest
五:容器内启动http服务:
六,宿主机访问docker内的http服务
- docker ps(找到容器container id)
- docker inspect cf70f0434fa1|grep -i pid
- nsenter -t 16377 -n ip a
- curl 172.17.0.20:8000
第二种方式,标准写法:
go语言写的server ,main.go
package main import ( "fmt" "log" "net" "net/http" "net/http/pprof" "os" "strings" ) func index(w http.ResponseWriter, r *http.Request) { // w.Write([]byte("<h1>Welcome to Cloud Native</h1>")) // 03.设置version os.Setenv("VERSION", "v0.0.1") version := os.Getenv("VERSION") w.Header().Set("VERSION", version) fmt.Printf("os version: %s \n", version) // 02.将requst中的header 设置到 reponse中 for k, v := range r.Header { for _, vv := range v { fmt.Printf("Header key: %s, Header value: %s \n", k, v) w.Header().Set(k, vv) } } // 04.记录日志并输出 clientip := getCurrentIP(r) //fmt.Println(r.RemoteAddr) log.Printf("Success! Response code: %d", 200) log.Printf("Success! clientip: %s", clientip) } // 05.健康检查的路由 func healthz(w http.ResponseWriter, r *http.Request) { fmt.Fprintf(w, "working") } func getCurrentIP(r *http.Request) string { // 这里也可以通过X-Forwarded-For请求头的第一个值作为用户的ip // 但是要注意的是这两个请求头代表的ip都有可能是伪造的 ip := r.Header.Get("X-Real-IP") if ip == "" { // 当请求头不存在即不存在代理时直接获取ip ip = strings.Split(r.RemoteAddr, ":")[0] } return ip } // ClientIP 尽最大努力实现获取客户端 IP 的算法。 // 解析 X-Real-IP 和 X-Forwarded-For 以便于反向代理(nginx 或 haproxy)可以正常工作。 func ClientIP(r *http.Request) string { xForwardedFor := r.Header.Get("X-Forwarded-For") ip := strings.TrimSpace(strings.Split(xForwardedFor, ",")[0]) if ip != "" { return ip } ip = strings.TrimSpace(r.Header.Get("X-Real-Ip")) if ip != "" { return ip } if ip, _, err := net.SplitHostPort(strings.TrimSpace(r.RemoteAddr)); err == nil { return ip } return "" } func main() { mux := http.NewServeMux() // 06. debug mux.HandleFunc("/debug/pprof/", pprof.Index) mux.HandleFunc("/debug/pprof/profile", pprof.Profile) mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol) mux.HandleFunc("/debug/pprof/trace", pprof.Trace) mux.HandleFunc("/", index) mux.HandleFunc("/healthz", healthz) if err := http.ListenAndServe(":8080", mux); err != nil { log.Fatalf("start http server failed, error: %s\n", err.Error()) } }
Dockerfile:
FROM golang:1.17 AS builder ENV GO111MODULE=off \ CGO_ENABLED=0 \ GOOS=linux \ GOARCH=amd64 WORKDIR /build COPY . . RUN go build -o httpserver . FROM scratch COPY --from=builder /build/httpserver / EXPOSE 8080 ENTRYPOINT ["/httpserver"]
将这两个文件放入同一目录下:
然后执行命令:docker build -t httpserver:0.0.3 .
docker镜像已经build好了