Please add cron support

[TomashKhamlai]

ISSUE TYPE

• Feature request

SUMMARY

Cron is often used by CMS

Goal

Magento Upgrade process is possible with cron. If this feature can have negative impact on the whole system then instructions for adding external cron docker in Magento tutorial would be enough to resolve this feature request

[cytopia]

@TomashKhamlai

For production images running Magento I also require cron, however I am using the one from the host system.

Either via docker

0 3 * * * root docker exec devilbox_php_1 php -d memory_limit=-1 /shared/httpd/magento/shell/indexer.php --reindex catalog_url

Or via Docker Compse:

0 3 * * * root cd /path/to/devilbox && docker-compose exec php php -d memory_limit=-1 /shared/httpd/magento/shell/indexer.php --reindex catalog_url

This works well for me. Let me know if this also works for you.

[TomashKhamlai]

@cytopia here how it looks now

*/5 * * * * tkhamlai cd ~/devilbox && docker-compose exec php php -d memory_limit=-1 /shared/httpd/magento2/magento2/bin/magento cron:run 2>&1 | grep -v "Ran jobs by schedule" >> /shared/httpd/magento2/magento2/var/log/magento.cron.log

*/5 * * * * tkhamlai cd ~/devilbox && docker-compose exec php php -d memory_limit=-1 /shared/httpd/magento2/magento2/update/cron.php >> /shared/httpd/magento2/magento2/var/log/update.cron.log
*/5 * * * * tkhamlai cd ~/devilbox && docker-compose exec php php -d memory_limit=-1 /shared/httpd/magento2/magento2/bin/magento setup:cron:run >> /shared/httpd/magento2/magento2/var/log/setup.cron.log

In the line where I call php bin/magento cron:run cron is not accessible in the container.

So this is not a solution for Magento 2

[cytopia]

@TomashKhamlai
Not sure what you mean by cron is not accessible in the container. The suggestion I proposed above is without using cron from the container.

If you are inside the PHP container, what is the exact command to run the Magento 2 cronjob?

[TomashKhamlai]

Inside of PHP container I run php bin/magento cron:run twice. The first command schedules new changes to MySQL database and executes everything that already has been scheduled and the second one executes the schedule.

To check I use

mysql> select * from magento2.cron_schedule;
Empty set (0.02 sec)

So something wrong with my crontab or Magento 2 application wants to have acces to the cron executable.

[cytopia]

Does this work if you do a apt update && apt install -y cron inside the php container first?

[cytopia]

The next PHP-FPM release will have cron and crontab binaries installed. See above linked PR or here: devilbox/docker-php-fpm#78

[TomashKhamlai]

Today, I tried to do:
git pull && ./update-docker.sh

Then I logged in to PHP container and issued this commands:

devilbox@php-7.1.24 in /shared/httpd/magento-dev/magento2 $ php bin/magento cron:install
Error during saving of crontab: sh: 7: crontab: not found
devilbox@php-7.1.24 in /shared/httpd/magento-dev/magento2 $ whereis cron
cron: /etc/cron.daily
devilbox@php-7.1.24 in /shared/httpd/magento-dev/magento2 $ 

And here what happens when it is installed by hands:

devilbox@php-7.1.24 in /shared/httpd/magento-dev/magento2 $ sudo apt install cron
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Suggested packages:
  anacron logrotate checksecurity
The following NEW packages will be installed:
  cron
0 upgraded, 1 newly installed, 0 to remove and 12 not upgraded.
Need to get 95.4 kB of archives.
After this operation, 257 kB of additional disk space will be used.
Get:1 http://deb.debian.org/debian stretch/main amd64 cron amd64 3.0pl1-128+deb9u1 [95.4 kB]
Fetched 95.4 kB in 0s (393 kB/s)
debconf: delaying package configuration, since apt-utils is not installed
Selecting previously unselected package cron.
(Reading database ... 37207 files and directories currently installed.)
Preparing to unpack .../cron_3.0pl1-128+deb9u1_amd64.deb ...
Unpacking cron (3.0pl1-128+deb9u1) ...
Setting up cron (3.0pl1-128+deb9u1) ...
Adding group `crontab' (GID 105) ...
Done.
update-rc.d: warning: start and stop actions are no longer supported; falling back to defaults
invoke-rc.d: could not determine current runlevel
invoke-rc.d: policy-rc.d denied execution of start.

I hope this helps.

[cytopia]

So once cron is installed, does the Magento cronjob command work then?

[cytopia]

@TomashKhamlai

Error during saving of crontab: sh: 7: crontab: not found

This has now been fixed the merging the above linked PR. Check out the latest master branch again.