How to start Python (Flask) when EC2 starts
Introduction
If the EC2 startup time is set during business hours, it is troublesome to hit the command every morning, so This time, the API (Flask) made with python is used to automatically start the shell. It is a summary so as not to forget the method of the reference site.
api shell
I didn't have enough privileges so sudo
# sudo vim /usr/local/start_api.sh
----------------------------------
#!/bin/bash
nohup python3 /usr/local/api.py &
exit 0
Auto start settings
Again, I didn't have enough privileges, so I sudoed it.
# sudo vim /etc/init.d/api_start
-------------------------------
#!/bin/sh
# chkconfig: 345 99 10
# description: start_api shell
case "$1" in
start)
bash /usr/local/start_api.sh
;;
stop)
/usr/bin/kill python
echo "stop!"
;;
*) break ;;
esac
Grant execution authority
Again sudo
$ cd /etc/init.d
$ sudo chmod 775 api_start
Registration for automatic startup
$ chkconfig --add api_start
##Turn on auto-start
$ chkconfig app_start on
##Check if it is set
$ chkconfig --list app_start
api_start 0:off 1:off 2:on 3:on 4:on 5:on 6:off
This is the end.
By the way, in the case of the command prompt of win10, the color of the file changes. (White → green)
Finally
Reboot the instance, make sure it's started, and you're done.
Reference site
https://hit.hateblo.jp/entry/aws/ec/initd https://dev.classmethod.jp/articles/ec2shell/
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