ubuntu创建守护进程，并设置开机自启动(rc.locla,rc_local.sercive)_ubuntu 开机自动启动

1.创建守护进程：

vim protect.sh
sudo chmod +x protect.sh

#!/bin/bash
 
# 定义所守护的进程名称或关键字
TARGET_PROCESS="java"
 
while true; do
    # 检测目标进程是否运行
    if pgrep -x "$TARGET_PROCESS" >/dev/null; then
        echo "The process is running."
    else
        # 启动你的项目运行脚本
        /path/to/run.sh &
 
        # 记录守护进程重启的日志
        echo "Restarting the project at $(date)" >> daemon_log.txt
    fi
 
    # 等待一段时间后重新检测，可以根据需要调整
    sleep 10
done

注：为方便开机自启动，建议都写绝对路径，run.sh的也要写绝对路径。

2.rc.local添加开启启动的程序

view /etc/rc.local
sudo chmod +x /etc/rc.local #添加权限

#!/bin/bash
# rc.local
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
# In order to enable or disable this script just change the execution
# bits.
# By default this script does nothing.
# 可以在 exit 0 之前添加需要开机启动的程序
 
/path/to/protect.sh &
 
exit 0

3.启动服务

systemctl start rc-local.service
或者
systemctl enable rc-local.service
 
systemctl status rc-local.service
#看active的状态
 
#systemctl list-unit-files --type=service | grep "rc-local.service"

4..reboot kill、试试看是否成功