运行 Python bootup/reboot 上的程序,在 OpenWrt Linux 中的单独分区上

Run Python program on bootup/reboot, on separate partition in OpenWrt Linux

在OpenWrt Linux 上,我在/etc/init.d 文件夹中放置了一个启动脚本,并启用了它。脚本很好,看起来如下:

#!/bin/sh /etc/rc.common

# Automatically place an "S91canpy" symlink in /etc/rc.d/ once we enable it
# This means it will start right after /etc/rc.d/90openvpn
START=91

# This is what will run when this service starts
start() { 
    # Run the process in the background (&), and direct errors to a log file
    sh /user/start_everything.sh >/var/log/init_canpy.log 2>&1 &
}

# This is what will run when the service stops
stop() {
    echo "no stop function set up yet"
}

# This is what will run when the service restarts
restart() {
    # Run the process in the background (&), and direct errors to a log file
    sh /user/start_everything.sh >/var/log/init_canpy.log 2>&1 &
}

它调用的/user/start_everything.sh脚本如下:

#!/bin/sh

# Run the "find_config_data.py" Python program 
/data/venv/bin/python3.6 /user/canpy/find_config_data.py

问题是 /data 在一个单独的硬盘分区上,所以 init.d 找不到它。我得到的错误如下:

line 4: /data/venv/bin/python3.6: not found

我的主分区只剩下 20 MB space,所以我必须将 Python 3.6 及其库安装到 /data 分区,该分区有 2.5 GB space.

如何让 init.d 在 /data/venv/bin/python3.6 找到我的 Python 二进制文件? 我绝对必须有这个 Python 程序 运行 每次 Linux boots/reboots。谢谢!!

以下是我的分区设置:

root@FATBOX:/tmp/log# df -h
Filesystem                Size      Used Available Use% Mounted on
/dev/root               476.2M    456.0M     20.2M  96% /
devtmpfs                512.0K         0    512.0K   0% /dev
tmpfs                   247.7M    116.0K    247.6M   0% /tmp
tmpfs                   512.0K         0    512.0K   0% /dev
/dev/mmcblk0p3            2.7G     50.2M      2.5G   2% /data

我想出了一个替代解决方案,它完成了工作,并确保我的应用程序继续 运行ning(额外的好处)。

我在 cron 中每分钟安排一个进程检查器脚本 运行:

#!/bin/sh

# Checking if /user/canpy/app.py is running
ps | grep -v grep | grep /user/canpy/app.py
if [ $? -eq 0 ]; then
    echo "/user/canpy/app.py is running."
else
    # If it is not running, start it!
    echo "/user/canpy/app.py is not running. Starting it now"
    /data/venv/bin/python3.6 /user/canpy/app.py >/var/log/main_app_canpy.log 2>&1 &
fi

这是位于 /etc/crontabs/root:

的 crontab
# Schedule check_running.sh to run every minute
* * * * * sh /user/check_running.sh >/var/log/check_running_canpy.log 2>&1 &

干杯, 肖恩