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create cron job

To set up a test cron job, follow these steps:

Step 1: Install cronie Package

On each Nautilus app server, run:

sudo yum install -y cronie  # For RHEL/CentOS

OR

sudo apt update && sudo apt install -y cron  # For Ubuntu/Debian

Step 2: Start and Enable the crond Service

Once installed, start the cron daemon:

sudo systemctl start crond
sudo systemctl enable crond

Verify it’s running:

systemctl status crond

Step 3: Add the Cron Job for Root

Edit the root user's crontab:

sudo crontab -e

Add the following line:

*/5 * * * * echo hello > /tmp/cron_text
  • This ensures the job runs every 5 minutes and writes "hello" to /tmp/cron_text.

Step 4: Verify the Cron Job

To check if the cron job was added, run:

sudo crontab -l

Wait 5 minutes, then confirm execution:

cat /tmp/cron_text

If "hello" appears, your setup is working!

Let me know if you need adjustments. 🚀

SERVERS="server1 server2 server3"
for SERVER in $SERVERS; do
  ssh $SERVER "sudo yum install -y cronie && sudo systemctl start crond && sudo systemctl enable crond && echo '*/5 * * * * echo hello > /tmp/cron_text' | sudo crontab -"
done