1.项目目录
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├── Dockerfile # dockerFile文件
├── config-dev.yaml # dev环境配置文件
├── config-local.yaml # 本地测试文件
├── docker-compose.yaml # docker-compose文件
├── .env # 环境变量文件
....
├── go.mod
├── go.sum
├── logs
├── main.go
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2. 新增dockerfile
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FROM golang:1.18.3-stretch AS builder
# 环境变量
ENV GO111MODULE=on \
CGO_ENABLED=0 \
GOOS=linux \
GOARCH=amd64 \
GOPROXY="https://goproxy.cn,direct"
# 切换到工作目录
WORKDIR /build
# 将代码复制到容器中
COPY . .
# 下载依赖
RUN go mod download \
&& go get shershon1991/fund-analye-system/service/crawl/fund \
&& go get github.com/gin-gonic/gin/binding@v1.7.2
# 编译成二进制文件,二进制文件名：app
RUN go build -o app .
### --------- 二阶段，构建一个小镜像 ---------
FROM shershon/go-env:stretch-slim
# 项目目录
WORKDIR /www
# 从builder镜像中把二进制文件/build/app 拷贝到当前目录
COPY --from=builder /build/app /www
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3. 新增docker-compose.yaml
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version: '3'
networks:
backend:
driver: ${NETWORKS_DRIVER}
services:
app:
build:
context: .
args:
- APP_ENV=${APP_ENV}
command: sh -c "./app -c ./config.yaml"
volumes:
- ${PROJECT_PATH}/config-${APP_ENV}.yaml:/www/config.yaml
- ${LOG_PATH}/logs:/www/logs
ports:
- "${APP_PORT}:8088"
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4. 新增环境变量文件.env
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# 项目地址(绝对路径)
PROJECT_PATH=..
# 日志目录
LOG_PATH=
# 网络
NETWORKS_DRIVER=bridge
# 环境
APP_ENV=local
# 端口
APP_PORT=8081
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5.编译docker-compose build
6.运行docker-compose up -d
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# 运行
➜ docker-compose up -d
WARNING: Some networks were defined but are not used by any service: backend
fund-server_app_1 is up-to-date
# 查看日志
➜ docker-compose logs
WARNING: Some networks were defined but are not used by any service: backend
Attaching to fund-server_app_1
app_1 | [GIN-debug] [WARNING] Running in "debug" mode. Switch to "release" mode in production.
app_1 | - using env: export GIN_MODE=release
app_1 | - using code: gin.SetMode(gin.ReleaseMode)
app_1 |
app_1 | [GIN-debug] GET /system/config --> shershon1991/fund-analye-system/api/demo.GetConfig (3 handlers)
app_1 | [GIN-debug] POST /demo/user/login --> shershon1991/fund-analye-system/api/demo.Login (3 handlers)
app_1 | 【 当前环境: dev 当前版本: v1.0.0 接口地址: http://0.0.0.0:8081 启动时间:2021-10-18 22:10:23 】
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7. 踩坑记录connect: no route to host
启动容器后，在容器内访问本地mysql报错: connect: no route to host
7.1 报错信息
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➜ docker-compose up
WARNING: Some networks were defined but are not used by any service: backend
Starting fund-server_app_1 ... done
Attaching to fund-server_app_1
app_1 | panic: 创建mysql客户端失败: dial tcp 172.20.0.1:3306: connect: no route to host, {172.20.0.1 3306 root root fund_system utf8mb4 false true Local 255 true false {false true false false fas_ true} 50ms info true true}
app_1 |
app_1 | goroutine 1 [running]:
app_1 | shershon1991/fund-analye-system/initialize.initGorm()
app_1 | /build/initialize/gorm.go:50 +0x6ae
app_1 | shershon1991/fund-analye-system/initialize.SetLoadInit()
app_1 | /build/initialize/load.go:9 +0x2f
app_1 | main.main()
app_1 | /build/main.go:18 +0x45
fund-server_app_1 exited with code 2
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7.2 解决方法
1. 替换mysql的host
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# 查看网络信息
➜ docker network ls
NETWORK ID NAME DRIVER SCOPE
1ff63fe03b51 bridge bridge local
4067e988f21e fund-server_default bridge local
3e3c8036f789 host host local
5066fef7de07 none null local
# 查看网络，对应的IP信息
➜ ifconfig
br-4067e988f21e: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.30.0.1 netmask 255.255.0.0 broadcast 172.30.255.255
ether 02:42:09:22:b7:96 txqueuelen 0 (Ethernet)
RX packets 341232 bytes 28039546 (26.7 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 341232 bytes 28039546 (26.7 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
# docker ip
docker0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 172.20.0.1 netmask 255.255.255.0 broadcast 172.20.0.255
ether 02:42:ce:98:11:2d txqueuelen 0 (Ethernet)
RX packets 585535 bytes 33313003 (31.7 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 605413 bytes 4440526782 (4.1 GiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 172.17.109.13 netmask 255.255.240.0 broadcast 172.17.111.255
ether 00:16:3e:12:a4:49 txqueuelen 1000 (Ethernet)
RX packets 8259415 bytes 5899125416 (5.4 GiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 6539516 bytes 2592253401 (2.4 GiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
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2. 修改防火墙配置文件
vim /etc/firewalld/zones/public.xml
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# 文件位置
<?xml version="1.0" encoding="utf-8"?>
<zone>
<short>Public</short>
<description>For use in public areas. You do not trust the other computers on networks to not harm your computer. Only selected incoming connections are accepted.</description>
<service name="ssh"/>
<service name="dhcpv6-client"/>
<port protocol="tcp" port="20"/>
<port protocol="tcp" port="21"/>
<port protocol="tcp" port="22"/>
<port protocol="tcp" port="80"/>
<port protocol="tcp" port="8888"/>
<port protocol="tcp" port="39000-40000"/>
<port protocol="tcp" port="443"/>
<port protocol="tcp" port="12345"/>
<port protocol="udp" port="12345"/>
<port protocol="tcp" port="888"/>
<!-- docker ip-->
<rule family="ipv4">
<source address="172.20.0.0/16"/>
<accept/>
</rule>
<!-- 服务创建的网络段-->
<rule family="ipv4">
<source address="172.30.0.0/16"/>
<accept/>
</rule>
</zone>
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3. 重启防火墙
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# 重启防火墙
➜ service firewalld restart
Redirecting to /bin/systemctl restart firewalld.service
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4. 重启服务
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# 重启服务
➜ docker-compose up -d
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