Problem with cron

[xprototipe19]

Hello,

I have a problem, when I give a mission for cron (execute a script php) makes it but at the end of some instant mission abolishes all alone.
Why? How to avoid it?

Thank you for your assistant.

[Anna]

Could you please be a little more specific? Does the cron not run at all? Is there any errors?

This may also be of interest:
Note that if you have two crons there must still be at least five minutes in between them.

Consider these scenarios:

cron 1 run: 5, 15, 25, 35 etc - cron 2 run: 0, 10, 20, 30 etc

cron 1 run: 5, 15, 25, 35 etc - cron 2 run: 7, 17, 27, 37 etc

Scenario 1 would work, as they alternate every 5 minutes.

Scenario 2 would NOT work, as cron 2 would attempt running only 2 minutes after cron 1 was run. This would result in both crons being removed. Same applies if you set one single cron to run more often then every 5 minutes.

[descalzo]

Remember, cron jobs have to be 5 minutes apart. The system will delete all your cron jobs if
a) any job runs more often than every 5 minutes
b) two jobs go off withing 5 minutes of each other, ie job1 runs on the hour and job2 runs every half hour at 0 and 30

If that is not the problem, try making your command line look like:

/usr/bin/php /home/me/public_html/test.php   >>  /home/me/public_html/test_log.txt 2>&1

then you can see any output or errors in test_log.txt

[xprototipe19]

Thank you for your answers.

Then, I have 2 spots cron, one updates the number of connected every 5 minutes.
And the other updates a number every hour.

In fact quite everything works very well, then suddenly nothing more does not put itself has in the daytime, I thus go to see my spots cron and they are not any more :/

Nevertheless there are no errors

[descalzo]

Then you have to adjust your cron setup.

1. You can make it one job/script, every 5 minutes which combines the two scripts. Script always does job1 and checks the time to decide if it does job2.

2. If you do not mind having the 5 minute script skip once an hour,

0 * * * * HourlyJob
5,10,15,20,25,30,35,40,45,50,55 * * * * FiveMinuteJob

3. Combination of #1 and #2, adjust the Hourly job to include the tasks done by the FiveMinuteJob

#1 and #3 require that you know what your cron jobs do/PHP.

[xprototipe19]

Then we cannot have several spots for cron?
Nevertheless I respected rules.
It's a pity, I would try to group together my 2 spots.
In fact I am novice in this system of cron :p
Of the blow I found very practical that the host suggests programming the frequency an hour etc.

Thank you for your help.

[Anna]

you can have several spots, as long as there's no crons that run within 5 minutes of another.

Prime Membership, at $4.95 / year would allow the crons to run every minute, but not the basic free package

[xprototipe19]

Ah yes, it is good, I understood

Thank you still for your answers.