10分钟系列之—— 10分钟学会编写 高颜值 Springboot jar包 start | stop | restart | show status 脚本
1.第一个Shell脚本
在Linux目录下,如 /home/app/sample
输入命令
vi test.sh
输入文件内容:
#!/bin/bash
echo "Hello world!"
然后输入:wq 并 回车,即可保存文件内容。
如此则创建了一个名为 text.sh 的文件。
接下来,赋予脚本文件执行权限,然后执行:
chmod +x ./test.sh #使脚本具有执行权限
./test.sh #执行脚本
就会看到 “Hello world!” 输出。
2.定义一个变量,使用条件判断语句,循环语句以及分支判断语句:
#!/bin/bash
echo "Hello world!"
java_option="-server -Xms4G -Xmx4G -Xmn1800m"
echo ${java_option}
if [ $"$java_option" ]
then
echo "has java options config"
else
echo "no config"
fi
3.结合Linux命令的逻辑:
PID=$(ps aux | grep ${_JAR_KEYWORDS} | grep -v grep | awk '{print $2}' )
上述脚本的意思是:
○ 按照进程关键字查找指定进程,显示所有的进程显示全部的列
○ 去除包含进程关键字的进程行(grep -v 是反向查找的意思,比如 grep -v grep 就是查找不含有 grep 字段的行)
○ 每行按空格分割,输出文本中的第二项。
如下示例,一目了然:
[root@01001 sample]$ ps aux|grep java |grep -v grep |awk '{print $2}'
34867
35642
[root@01001 sample]$ ps aux|grep java |grep -v grep
root 34867 0.2 5.9 4795292 483136 ? Sl 09:33 0:28 java -jar dubboDemo-service-1.0.0-SNAPSHOT.jar
root 35642 0.4 7.2 4852108 594724 ? Sl 09:34 0:46 java -jar dubboConsumer-service-1.0.0-SNAPSHOT.jar
[root@01001 sample]$ ps aux|grep java
root 34867 0.2 5.9 4795292 483136 ? Sl 09:33 0:28 java -jar dubboDemo-service-1.0.0-SNAPSHOT.jar
root 35642 0.4 7.2 4852108 594724 ? Sl 09:34 0:46 java -jar dubboConsumer-service-1.0.0-SNAPSHOT.jar
root 115153 0.0 0.0 112664 972 pts/0 S+ 12:31 0:00 grep --color=auto java
Linux命令返回值 $?
示例1
[root@dev2] # ls
[root@dev2] # echo $?
0
示例2
编写下面的代码,并保存为 test.sh:
#!/bin/bash
if["$1" == 100]
then
exit 0 # 参数正确,退出状态为0
else
exit 1 # 参数错误,退出状态1
fi
exit表示退出当前 Shell 进程,我们必须在新进程中运行 test.sh,
否则当前 Shell 会话(终端窗口)会被关闭,我们就无法取得它的退出状态了。
[root@dev2 ~]# cd demo
[root@dev2 demo]# bash ./test.sh 100 #作为一个新进程运行
[root@dev2 demo]# echo $?
0
再如,运行 test.sh 时传递参数 89:
[root@dev2 demo]# ./test.sh 89 #作为一个新进程运行
[oot@dev2 demo]# echo $?
1
示例3
编写下面的代码,并保存为 test.sh:
#!/bin/bash
function add() {
return `expr $1 + $2`
}
add 16 50
echo $?
运行结果:66
OK,有了上述基础,我们来看下springboot 的jar包执行脚本
先看效果:
./run.sh status > 输出当前服务状态
输入:./run.sh start > 启动服务
./run.sh status #输出当前服务状态
./run.sh start #启动服务
./run.sh stop #停止服务
./run.sh restart #重启服务
下面是完整脚本:
#!/bin/bash
#ja
JAVA_OPTIONS="-server -Xms4G -Xmx4G -Xmn1800m -Xss256k -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=512m -XX:+UseG1GC -Dspring.profiles.active=dev"
APP_JAR=dubboDemo-1.0.0-SNAPSHOT.jar
APP_NAME=dubboDemo
STDOUT_FILE=run.log
PID=$(ps aux | grep ${APP_JAR} | grep -v grep | awk '{print $2}' )
function check_if_process_is_running() {
if [ "$PID" = "" ]; then
return 1
fi
ps -p $PID | grep "java"
return $?
}
function status_cmd(){
if check_if_process_is_running
then
isrunning
else
notrunning
fi
}
function isrunning(){
echo "[$(date +%F-%T)] ================================================================================" 2>&1 | tee -a ${STDOUT_FILE}
echo -e "[$(date +%F-%T)] \033[32m ${APP_NAME} is running ! (PID=${PID}) \033[0m" 2>&1 | tee -a ${STDOUT_FILE}
echo "[$(date +%F-%T)] ================================================================================" 2>&1 | tee -a ${STDOUT_FILE}
}
function notrunning(){
echo "[$(date +%F-%T)] ================================================================================" 2>&1 | tee -a ${STDOUT_FILE}
echo -e "[$(date +%F-%T)] \033[32m ${APP_NAME} not running ! (PID=${PID}) \033[0m" 2>&1 | tee -a ${STDOUT_FILE}
echo "[$(date +%F-%T)] ================================================================================" 2>&1 | tee -a ${STDOUT_FILE}
}
function stop_cmd(){
if ! check_if_process_is_running
then
stoped
exit 0
fi
kill -9 $PID
waitstop
NOT_KILLED=1
for i in {1..20}; do
if check_if_process_is_running
then
echo -ne "\033[32m Stopping \033[0m"
for i in {1..5}; do
echo -ne "\033[32m.\033[0m"
sleep 1
done
else
NOT_KILLED=0
fi
done
echo
if [ $NOT_KILLED = 1 ]
then
cannotkill
exit 1
fi
alreadystop
}
function stoped(){
echo "[$(date +%F-%T)] ================================================================================" 2>&1 | tee -a ${STDOUT_FILE}
echo -e "[$(date +%F-%T)] \033[32m ${APP_NAME} already stopped ! (PID=${PID}) \033[0m" 2>&1 | tee -a ${STDOUT_FILE}
echo "[$(date +%F-%T)] ================================================================================" 2>&1 | tee -a ${STDOUT_FILE}
}
function waitstop(){
echo "[$(date +%F-%T)] ================================================================================" 2>&1 | tee -a ${STDOUT_FILE}
echo -e "[$(date +%F-%T)] \033[32m ${APP_NAME} Waiting for process to stop ! (PID=${PID}) \033[0m" 2>&1 | tee -a ${STDOUT_FILE}
echo "[$(date +%F-%T)] ================================================================================" 2>&1 | tee -a ${STDOUT_FILE}
}
function cannotkill(){
echo "[$(date +%F-%T)] ================================================================================" 2>&1 | tee -a ${STDOUT_FILE}
echo -e "[$(date +%F-%T)] \033[32m ${APP_NAME} Cannot kill process ! (PID=${PID}) \033[0m" 2>&1 | tee -a ${STDOUT_FILE}
echo "[$(date +%F-%T)] ================================================================================" 2>&1 | tee -a ${STDOUT_FILE}
}
function alreadystop(){
echo "[$(date +%F-%T)] ================================================================================" 2>&1 | tee -a ${STDOUT_FILE}
echo -e "[$(date +%F-%T)] \033[32m ${APP_NAME} already stopped ! (PID=${PID}) \033[0m" 2>&1 | tee -a ${STDOUT_FILE}
echo "[$(date +%F-%T)] ================================================================================" 2>&1 | tee -a ${STDOUT_FILE}
}
function start_cmd(){
if [ "$PID" != "" ] && check_if_process_is_running
then
alreadyrunning
exit 1
fi
nohup java $JAVA_OPTIONS -jar $APP_JAR > /dev/null 2>&1 &
echo -ne "\033[32m Starting \033[0m"
for i in {1..20}; do
echo -ne "\033[32m.\033[0m"
sleep 1
done
echo
if check_if_process_is_running
then
fail
else
started
fi
}
function alreadyrunning(){
echo "[$(date +%F-%T)] ================================================================================" 2>&1 | tee -a ${STDOUT_FILE}
echo -e "[$(date +%F-%T)] \033[32m ${APP_NAME} already running ! (PID=${PID}) \033[0m" 2>&1 | tee -a ${STDOUT_FILE}
echo "[$(date +%F-%T)] ================================================================================" 2>&1 | tee -a ${STDOUT_FILE}
}
function fail(){
echo "[$(date +%F-%T)] ================================================================================" 2>&1 | tee -a ${STDOUT_FILE}
echo -e "[$(date +%F-%T)] \033[32m ${APP_NAME} fail ! (PID=${PID}) \033[0m" 2>&1 | tee -a ${STDOUT_FILE}
echo "[$(date +%F-%T)] ================================================================================" 2>&1 | tee -a ${STDOUT_FILE}
}
function started(){
echo "[$(date +%F-%T)] ================================================================================" 2>&1 | tee -a ${STDOUT_FILE}
echo -e "[$(date +%F-%T)] \033[32m ${APP_NAME} started ! (PID=${PID}) \033[0m" 2>&1 | tee -a ${STDOUT_FILE}
echo "[$(date +%F-%T)] ================================================================================" 2>&1 | tee -a ${STDOUT_FILE}
}
case "$1" in
status)
status_cmd
;;
stop)
stop_cmd
;;
start)
start_cmd
;;
restart)
$0 stop
if [ $? = 1 ]
then
exit 1
fi
$0 start
;;
*)
echo "Usage: $0 {start|stop|restart|status}"
exit 1
esac
exit 0
关于Linux 中 echo 字体颜色的说明:
echo命令打印带有颜色的字符
命令参数格式:
echo -e “\033[字背景颜色;字体颜色m字符串\033[0m”
举例:如下命令含义为:(黑色背景 红色字体)
echo -e "\033[40;31m 开始安装 \033[0m"
echo -e "\033[40;31m 开始安装 \033[0m"
echo -e "\033[40;32m 安装成功 \033[0m"
常用颜色对应数字如下:
字颜色: 30-----------37
30:黑 31:红 32:绿 33:黄 34:蓝色 35:紫色 36:深绿 37:白色
背景颜色范围: 40----47
40:黑 41:深红 42:绿 43:黄色 44:蓝色 45:紫色 46:深绿 47:白色