overview
Involved: 1) sh cannot run java command directly, it can be connected softly, here is the direct path
2) The sh script reports a bunch of spaces and newline errors: it needs to be converted into the unix standard format;
#切换到上传的脚本路径
dos2unix 脚本文件名.sh2) SELINUX authorization allows launching sh scripts
3) SELINUX authorization allows start-up to write log files
Soft link method (no action required)
cd /usr/bin
ln -s -f /usr/local/jdk17/javaSteps
1. Create a new sh script
New: service_script.sh script
Note: Need to configure
1) jdk path; 2) program log path; 3) java name; 4) start port
#!/bin/bash
#这里替换为jar包名字
APP_NAME=hy-admin.jar
#根据实际情况修改参数
JVM="-server -Xms4g -Xmx4g"
#APPFILE_PATH="-Dspring.config.location=/usr/local/config/application.properties"
export JAVA_HOME=/usr/local/jdk17
export JRE_HOME=$JAVA_HOME/jre
export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar
export PATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin
#使用说明,用来提示输入参数
usage() {
echo "Usage: sh 执行脚本.sh [start|stop|restart|status|log|backup] [port]"
exit 1
}
port=$2
#检查指定端口是否是有程序在运行
is_exist(){
# 默认端口
if [ "${port}" == "" ]; then
# 默认使用9000
port=9000
fi
# 获取端口占用的进程号
pid=`lsof -i:$port | awk 'NR == 2' | awk '{print $2}'`
#如果不存在返回1,存在返回0
if [ -z "${pid}" ]; then
return 1
else
return 0
fi
}
#启动方法
start(){
is_exist
if [ $? -eq "0" ]; then
echo "${port} 端口已经被 ${pid} 进程占用"
else
#nohup java $JVM -jar $APPFILE_PATH $APP_NAME > /dev/null 2>&1
#后台启动jar包，且控制环境变量，根据实际情况修改吧。
#nohup java $JVM -jar $APP_NAME --spring.profiles.active=prod > /dev/null 2>&1 &
cd /data/hy-cost-grain-pro
echo "">log.file
nohup ${JAVA_HOME}/bin/java -jar ${APP_NAME} --server.port=${port} >log.file 2>&1 &
echo " ${APP_NAME} 进程 $! 在 ${port} 端口启动中......"
log
fi
}
#停止方法
stop(){
is_exist
if [ $? -eq "0" ]; then
kill -9 $pid
echo "${port} 端口的进程 ${pid} 已经被中断"
else
echo "${port} 端口未启用"
fi
}
#输出运行状态
status(){
is_exist
if [ $? -eq "0" ]; then
echo "${port} 端口已被进程 ${pid} 占用"
else
echo "${port} 端口未被占用"
fi
}
#重启
restart(){
stop
start
}
#日志
log(){
# 输出实时日志
tail -n 100 -f log.file
}
#备份
backup(){
#根据需求自定义备份文件路径。
BACKUP_PATH=./back/
#获取当前时间作为备份文件名
BACKUP_DATE=`date +"%Y%m%d(%H:%M:%S)"`
echo 'backup file ->'$BACKUP_PATH$BACKUP_DATE'.jar'
#备份当前jar包
cp -r ./$APP_NAME $BACKUP_PATH$BACKUP_DATE'.jar'
}
#根据输入参数,选择执行对应方法,不输入则执行使用说明
case "$1" in
"start")
start
;;
"stop")
stop
;;
"status")
status
;;
"restart")
restart
;;
"log")
log
;;
"backup")
backup
;;
*)
usage
;;
esac
Note that the uploaded .sh script is converted into a file in unix encoding format that the system can recognize
Switch to the script path after uploading: run the following command
dos2unix service_script.sh2. Generate log files and authorize
SELINUX allows to start the file written to the log; 2-3 steps, the theory can also close SELINUX
echo ''>/data/hy-cost-grain-pro/log.file
chmod 777 /data/hy-cost-grain-pro/log.file
#授予启动脚本写入
semanage fcontext -a -t var_log_t /data/hy-cost-grain-pro/log.file
restorecon -Rv /data/hy-cost-grain-pro/log.file
#查看授权
semanage fcontext -l|grep var_log_t
3. Authorize startup script startup permission
Set SELINUX to allow the steps to start and run, 2-3 steps,
#允许运行启动脚本
semanage fcontext -a -t init_exec_t /data/hy-cost-grain-pro/service_script.sh
restorecon -R -v /data/hy-cost-grain-pro/service_script.sh
#查看授权
semanage fcontext -l|grep init_exec_t
Or close selinux (see below) and authorize
chmod 777 /data/hy-cost-grain-pro/service_script.sh4. Create a new startup service file
Create a new java-grain-9000.service file
[Unit]
Description=java-cost-grain-pro
After=syslog.target
[Service]
Type=simple
#延迟启动，如果jar包需要运用到数据库，所以在这加了睡眠10秒
ExecStartPre=/bin/sleep 8
ExecStart=/data/hy-cost-grain-pro/service_script.sh start
ExecReload=/data/hy-cost-grain-pro/service_script.sh restart
ExecStop=/data/hy-cost-grain-pro/service_script.sh stop
[Install]
WantedBy=multi-user.target5. Upload and add automatic startup
Upload to: /etc/systemd/system
#刷新服务配置
systemctl daemon-reload
# 启动服务
systemctl start java-grain-9000.service
# 服务开机自启
systemctl enable java-grain-9000.service
# 停止服务
systemctl stop java-grain-9000.service
# 查看服务状态
systemctl status java-grain-9000.service -lReboot, test boot self-start, it took 15s to start
reboot 
Possible problems:
1) None: lsof command
yum install lsof
2) Introduction to SELinux
SELinux has three working modes, note: there is no special security requirement, it can be permissive; different levels have the same configuration;
-
enforcing: enforcement mode. Any behavior that violates the policy will be prohibited and a warning message will be generated.
-
permissive: Permissive mode. Violations of the policy will not be banned, only warning messages will be generated.
-
disabled: Turn off SELinux.
3) selinux is permanently closed
1. Temporary closure
setenforce 0Note: It will be turned on after restarting the system.
2. Close permanently
1. vim /etc/selinux/config, SELINUX=disabled, then save and exit.
2. vim /etc/sysconfig/selinux, SELINUX=disabled, then save and exit.
Note: If it does not take effect, restart
3. Verification method
Input command: getenforce
4) If the database of the switching path can also be started automatically: please refer to my blog
Centos(rocky, red Hat) yum install mysql, switch path and set boot automatically