How to setup cron job on Amazon Linux AMI

问题

I am hosting Tiny Tiny RSS site hosted on

Amazon Linux AMI

To update the feed automatically I have to run following cron job.

Reference http://tt-rss.org/redmine/projects/tt-rss/wiki/UpdatingFeeds

*/30 * * * * /usr/bin/php /var/www/html/tt-rss/update.php --feeds --quiet

Here is the step I did:

1. sudo su
2. cd /etc
3. crontab -e
4. add this line */30 * * * * /usr/bin/php /var/www/html/tt-rss/update.php --feeds --quiet

But I still got the message "Update Daemon is not running".

May I know is this correct step for cron job?

My first setup.

Thanks, Alex

回答1:

You should first inspect the cron log file /var/log/cron and look for any errors. This will probably give you the answer. Also make sure you can run the command successfully on the command line (/usr/bin/php /var/www/html/tt-rss/update.php --feeds --quiet).

回答2:

This sounds like crond is not running. In which case:

service crond start
chkconfig crond on

回答3:

Please check the spaces, it could be because of spaces are not placed correctly

回答4:

Simply do : * * * * * wget -o - -q -t 1 "your url with cron file"

回答5:

Please remove the "--quiet" part from your cron command and check the log and feed again

回答6:

In Amazon Linux 2 you should enter these commands:

sudo systemctl start crond
sudo systemctl enable crond

来源：https://stackoverflow.com/questions/22305963/how-to-setup-cron-job-on-amazon-linux-ami