# myhttpserver

**Repository Path**: ijunjie/myhttpserver

## Basic Information

- **Project Name**: myhttpserver
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: MulanPSL-2.0
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2022-01-14
- **Last Updated**: 2022-02-24

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

模块三作业

### 1 构建本地镜像


```shell script
mkdir -p bin/amd64
CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -o bin/amd64 .
docker build -t wangjunjie/httpserver:v1.0 .
```

或执行 `make release`

### 2 编写 Dockerfile 将练习 2.2 编写的 httpserver 容器化

[Dockerfile](./Dockerfile):

### 3 将镜像推送至 docker 官方镜像仓库

```shell script
docker push wangjunjie/httpserver:v1.0
```

或执行 `make push` 

### 4. 通过 docker 命令本地启动 httpserver

```shell script
sudo docker run --name myhttpserver -d -p 18080:80 -e "VERSION=123" wangjunjie/httpserver:v1.0 
```
测试：

GET /healthz:

```shell script
ubuntu@VM-0-100-ubuntu:~$ curl -i  http://172.21.0.100:18080/healthz
HTTP/1.1 200 OK
Date: Fri, 14 Jan 2022 07:23:00 GMT
Content-Length: 0
```

echo headers and version:

```shell script
ubuntu@VM-0-100-ubuntu:~$ curl -i  http://172.21.0.100:18080/hello -H 'MYHEADER:1'
HTTP/1.1 200 OK
Accept: */*
Myheader: 1
User-Agent: curl/7.68.0
Version: 123
Date: Fri, 14 Jan 2022 07:22:05 GMT
Content-Length: 0
```


### 5. 通过 nsenter 进入容器查看 IP 配置

```shell script
# 首先通过 docker inspect 获取容器进程
sudo docker inspect myhttpserver -f '{{.State.Pid}}'

# nsenter 进入进程 namespace, 例如 pid 为 1444283
sudo nsenter -t 1444283 -u -i -n -p
```

nsenter 进入容器后，使用 ip addr 等命令查看网络配置

sample：

```console
root@9efe31eade04:/home/ubuntu# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
14: eth0@if15: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default 
    link/ether 02:42:ac:11:00:02 brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet 172.17.0.2/16 brd 172.17.255.255 scope global eth0
       valid_lft forever preferred_lft forever
```