I would like to know how can I run an application with crontab if the app uses flags:
30 0 * * * root myapp --run
I have searched similar questions here but I haven't found any approximate issue.
You are able to use as much params as you want, everything after 'schedule expression' treated as your execution command
30 0 * * * /sbin/ping -c 1 192.168.0.1 > /dev/null
Related
I have written some PHP scripts that I am trying to run with cron jobs in VestaCP, but they don't seem to be running. I have tried to search for other threads on here and on the VestaCP forum that could help me identify the error, but have not found a solution.
Server system:
CentOs 7.4
Vesta 0.9.8-22
I have tested the PHP scripts by going to the links directly. They all work well. But the cron jobs are not running and I can't figure out why.
I have not been able to locate any error messages or logs generated by these cron jobs (even when I remove the "> /dev/null 2>&1"). But I might have been looking in the wrong places.
All of the cron jobs have been added through the VestaCP cron interface.
I have disabled exim, dovecot, clamd, and spamassassin. And I have turned off notifications in the cron panel. Not sure if that is related.
Copied from /var/spool/cron/admin [edited domain name]:
15 02 * * * sudo /usr/local/vesta/bin/v-update-sys-queue disk
10 00 * * * sudo /usr/local/vesta/bin/v-update-sys-queue traffic
30 03 * * * sudo /usr/local/vesta/bin/v-update-sys-queue webstats
*/5 * * * * sudo /usr/local/vesta/bin/v-update-sys-queue backup
10 05 * * * sudo /usr/local/vesta/bin/v-backup-users
20 00 * * * sudo /usr/local/vesta/bin/v-update-user-stats
*/5 * * * * sudo /usr/local/vesta/bin/v-update-sys-rrd
15 6 * * * sudo /usr/local/vesta/bin/v-update-sys-vesta-all
01 4 * * * sudo /usr/local/vesta/bin/v-update-letsencrypt-ssl
*/5 * * * * wget -q -O - "https://testing.example.com/cli/new-projects" > /dev/null 2>&1
*/5 * * * * wget -q -O - "https://example.com/cli/new-projects" > /dev/null 2>&1
30 10 * * * wget -q -O - "https://example.com/cli/project-expiration" > /dev/null 2>&1
*/5 * * * * sudo /usr/local/vesta/bin/v-update-sys-queue letsencrypt
0 10 * * * wget -q -O - "https://testing.example.com/cli/project-expiration" > /dev/null 2>&1
*/2 * * * * wget -q -O - "https://testing.example.com/cli/email-sender" > /dev/null 2>&1
*/2 * * * * wget -q -O - "https://example.com/cli/email-sender" > /dev/null 2>&1
I had the same problem in Ubuntu.
The problem was that the cron jobs created from VestaCP control panel is created for the user and although there is sudo at the beginning of the command, they are not run.
They seem to be called since I can see them on the /tmp/log/syslog file. It does not show any error though. But for some reason, the commands are not executed.
Here are few simple commands to check cron status.
Check if Cron service is running:
pgrep cron
if a number is returned the service is running else not
Check Cron status:
systemctl status cron
Check the current cron file:
crontab -l
Edit cronjob file:
crontab -e
One solution is to create the cron jobs for the root user from the terminal. I have not tried for other users. The cron jobs created for root user will run without a problem.
I need to setup simple cronejob to ping my website url every 2 minutes, what i did for now make no effect, can somebody help me write simple ping cronjob?
Here is what i have for now
2 * * * * /usr/bin/wget -O - -q -t 1 http://example.com/api/get.php?refresh=yes
This might help:
*/2 * * * * wget -q -O - "http://example.com/api/get.php?refresh=yes" >/dev/null 2>&1
Every 2 minutes (15 in the article), ping the specified file without
any output whatsoever. Just a silent ping to execute my script,
nothing more, nothing less.
Source: https://wp-mix.com/cron-notes-ping-external-url-with-no-output/
I've got such situation:
I want to schedule a job with crontab on a linux server. I'm not super-user, so I'm editing (with crontab -l, editor vim) only my crontab file. For testing, I put there:
* * * * * echo asdf
And the job is not running. Is the restart of the server needed? Or maybe some administrator move?
May be it is, cron jobs will run in their own shell. So you can't expect to see asdf on your console.
What you should try is
* * * * * echo asdf > somefile_in_your_home_directory_with_complete_path.log
Next check the file by doing a tail:
tail -f somefile_in_your_home_directory_with_complete_path.log
And if it's not, check if the cron daemon itself is running or is down:
# pgrep crond
OR
# service crond status
If you want to echo something on your shell you could use wall:
* * * * * wall <<< "Hello from cron"
* * * * * echo "Hello from cron" | wall
These two lines basically do the same but the first one might not work on older shell, just choose your favorite.
Anyway, be aware that wall will send your message to every user currently connected.
For me * * * * * /bin/echo text > file is not working...I don't know why, previleges and everything is set.
(This command is running normaly when I execute it as the particular
root user, just to clarify this.)
This can be solved by injecting the path PATH=$PATH:/bin in my example.
Instead * * * * * echo text > file is working fine, probably path issue.
Hope I helped
I am new to Linux and Ubuntu and I seldom have to use it. I am trying to make this PHP script to run every minute using cron, but firstly I wanted to make some tests.
I created an empty file at /var/www/html/ called test. I ran on terminal:
sudo crontab -e
And added this line:
0 * * * * rm /var/www/html/test
Then saved it and exited. It said "Installing new Crontab"
Nothing happened. Then I created a file bfile.sh that contained:
#!/bin/sh
rm /var/www/html/test
and added the following to crontab:
0 * * * * bash /var/www/html/bfile.sh
Still nothing happened.
What do I have to do to see anything happening from crontab? By the way I checked and the service is running
0 * * * * basically says "run this at 0th minute of every hour."
If you need cron to run your command every minute do * * * * *.
0 * * * * runs once every 1 hour. If you want to run every minute it should be */1 * * * *
You can also check the /var/log/cron file for any errors
I tried to set cronjob on my server for ActiveCollab
I use this
*/5 * * * * php "/home/bbb/public_html/tasks/frequently.php" RnuFA > /dev/null
but it always returns error message :
Status: 301 Moved Permanently
Location: https://mywebsite.com/
Content-type: text/html
I've tried to execute the command through SSH and it worked properly.
Can someone help me telling what configuration on my server that need to be checked for this kind of issue?
Thank you
Official recommendation is to use cURL to trigger scheduled tasks, not executable PHP. Currently it is just a recommendation, but upcoming releases will stop shipping /tasks folder so you will have to use cURL.
There are many environments (more than we expected) where there is one PHP that web server uses to prepare the page, and another PHP that runs via command line interface (CLI). This causes all sort of problems, so we decided to use only way way of triggering tasks - via URL.
Bottom line - use cURL. Documentation is here:
https://activecollab.com/help/books/self-hosted-edition/scheduled-tasks-setup.html
Here are sample commands:
*/3 * * * * /usr/bin/curl -s -L "http://url/of/frequently?code=XyZty" > /dev/null
0 * * * * /usr/bin/curl -s -L "http://url/of/hourly?code=XyZty" > /dev/null
0 12 * * * /usr/bin/curl -s -L "http://url/of/daily?code=XyZty" > /dev/null
0 7 * * * /usr/bin/curl -s -L "http://url/of/paper?code=XyZty" > /dev/null
but make sure to check Administration > Scheduled Tasks page of your activeCollab for exact URLs that you need to trigger.