springboot项目生成容器并运行

背景

将springboot项目打包成jar包，上传到服务器并打包成镜像，运行成docker容器对外提供服务。

问题场景

本地的springboot服务编写好代码之后，需要同步到服务器。在服务器上，服务是以容器的形式运行的，所以需要经过以下步骤：

解决方案

效率化首选的shell脚本，使用rsync工具上传jar包到服务器，在服务器使用docker相关的命令进行构建镜像和运行生成容器提供服务

具体实现

upload.sh

本地打包构建服务，生成一个jar包，上传到服务器

#!/bin/zsh

# save original file info and show progress
JAR_FILE_NAME='wx-develop-0.0.1-SNAPSHOT.jar'
UPLOAD_CMD="
rsync -e  -avp \
./dockerfile \
./deploy.sh \
../../../target/$JAR_FILE_NAME \
root@server-ip:/app
"

# maven clean install to ensure the jar is the newest
mvn clean install -f ../../../pom.xml
if [ $? -ne 0 ]; then
  echo "maven build failed........."
  exit 1
else
  echo "now start upload files include $JAR_FILE_NAME"
fi

if [ ! -e ./dockerfile ] || [ ! -e "../../../target/$JAR_FILE_NAME" ]; then
  echo "dockerfile or jar JAR_FILE_NAE not exists"
  exit 1
fi
eval $UPLOAD_CMD

Dockerfile

FROM openjdk:8u302-jdk
# 作者信息
MAINTAINER shigen
# 设置时区
RUN ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
RUN echo 'Asia/Shanghai' >/etc/timezone
# 拷贝jar 把可执行jar包复制到基础镜像的根目录下
ADD ./wx-develop.jar /wx-develop.jar
# 设置暴露的端口号
EXPOSE 8088
# 在镜像运行为容器后执行的命令
ENTRYPOINT ["java","-jar","wx-develop.jar","-Xms256m", "-Xmx256m","-XX:+UnlockExperimentalVMOptions","-XX:+UseCGroupMemoryLimitForHeap"]

deploy.sh

正如我的脚本注释所说：to run jar as a docker container，即将jar包生成镜像并运行成容器。根据我上文分析的流程进行设计。

#!/bin/bash

# this shell is designed to run jar as a docker container

# define colors
RED='\e[1;31m'    # 红
GREEN='\e[1;32m'  # 绿
YELLOW='\e[1;33m' # 黄
BLUE='\e[1;34m'   # 蓝
PINK='\e[1;35m'   # 粉红
RES='\e[0m'       # 清除颜色

JAR_FILE_NAME='wx-develop-0.0.1-SNAPSHOT.jar'
DEFAULT_LABEL="wx-develop:`date +%Y%m%d`"
CONTAINER_PORT='8088/tcp'
PORT='80'


if [ ! -e ./dockerfile ] || [ ! -e "./$JAR_FILE_NAME" ]; then
  echo -e "$RED dockerfile or jar $JAR_FILE_NAE not exists $RES"
  exit 1
fi

echo -e "$YELLOW now start to build $JAR_FILE_NAME$RES"

read -t 5 -p "now input container label which concat with ':', default is $DEFAULT_LABEL ->" label

if [[ -z $label ]]  || [[  $label != *:* ]]; then
  echo -e "\n$BLUE use default label $DEFAULT_LABEL $RES\n"
  label=$DEFAULT_LABEL
fi
echo -e "$GREEN now using the label: $label $RES"

# kill the serve and remove container built before
CONTAINER_ID=$(docker ps | grep $CONTAINER_PORT | awk '{print $1}')
IMAGE_ID=$(docker ps | grep $CONTAINER_PORT | awk '{print $2}')

if [[ ! -z $CONTAINER_ID ]]; then
  echo -e "$RED now stop container $CONTAINER_ID $RES"
  docker stop $CONTAINER_ID
  docker rm $CONTAINER_ID
fi
if [[ ! -z $IMAGE_ID ]]; then
  echo -e "$RED now delete image $IMAGE_ID $RES"
  docker rmi $IMAGE_ID
fi

eval "docker build -t $label ."
echo -e "$GREEN successfully build $label $RES"

echo -e "$BLUE----------------------now run container $label--------------------------$RES"
docker run -d -p $PORT:$CONTAINER_PORT --name $(echo $label | cut -d : -f 1) $label
echo -e "$GREEN successfully run serve on port: $PORT $RES"