CoreOS does not have crontab and should not. It uses new concept of Timers for Services.
For instance I have to reindex Sphinx database in container every 15 minutes, how should I do this?
Proper way is to do like this:
- create service reindex.service
sudo vim /etc/systemd/system/reindex.service
[Unit]
Description=Reindexes sphinx container
[Service]
Type=oneshot
ExecStart=/usr/bin/docker exec itservice_search_1 /index.sh
- create timer for reindex service:
sudo vim /etc/systemd/system/reindex.timer
cat Output the contents of a submitted unit
[Unit]
Description=Run reindex.service every 10 minutes
[Timer]
OnCalendar=*:0/15
Next, we should enable this service and timer like this:
sudo systemctl enable reindex.service
sudo systemctl enable reindex.timer
sudo systemctl start reindex.timer
You can control your timers like:
systemctl list-timers
and watch service logs
journalctl -f -u reindex.service