Remove old crons when redeplying to AWS beanstack - amazon-web-services

Question

Not an expert on AWS and trying to fool around with Cron jobs. For testing, I had a sample script send me emails every minute. Now, I want to change it to once every 10 minutes (*/10 * * * *) These are the container commands I tried and none of them seems to work.
I am using a config file and a txt file to define the crons.
Config file contents (with various ideas I read from online sources)
container_commands:
00_remove_old_cron_jobs0:
command: "rm -fr /etc/cron.d/cron_job"
01_remove_old_cron_jobs1:
command: "sudo sed -i 's/empty stuff//g' /etc/cron.d/cron_job"
02_remove_old_cron_jobs2:
command: "crontab -r || exit 0"
03_cron_job:
command: "cat .ebextensions/cron_job.txt > /etc/cron.d/cron_job && chmod 644 /etc/cron.d/cron_job"
leader_only: true
cron_job.txt file contents.
# The newline at the end of this file is extremely important. Cron won't run without it.
0 * * * * ec2-user /usr/bin/php -q /var/www/html/cron1.php > /dev/null
0 * * * * ec2-user /usr/bin/php -q /var/www/html/html/cron2.php > /dev/null
*/10 * * * * ec2-user /usr/bin/php -q /var/www/html/cronTestEmailer.php > /dev/null
The test emailer script keeps firing every minute instead of every 10 mins and I dont know how I can make sure cron updates are reflected correctly.

Answer 1

You can achieve the same with the follow ebextensions config file.
files:
"/etc/cron.d/mycron":
mode: "000644"
owner: root
group: root
content: |
* * * * * root /usr/local/bin/myscript.sh
"/usr/local/bin/myscript.sh":
mode: "000755"
owner: root
group: root
content: |
#!/bin/bash
date > /tmp/date
# Your actual script content
exit 0
commands:
remove_old_cron:
command: "rm -f /etc/cron.d/*.bak"
More Details about the config file below:
files: Creates a Cron job and a file with the name myscript.sh. If a file with the same name exists already, first it moves the old file .bak and creates the file with new contents.
commands: deletes the all .bak files