Hi,
I'm running Magento CE 2.3.4 with php7.3 and I face a problem on the cron jobs that mutiply themselves on the server. After few days, I have up to 10x times the cron tasks and start to have too many DB connexions.
Here are the tasks that multiply themselves:
13507 ? S 0:00 /usr/sbin/CRON -f
13509 ? Ss 0:00 /bin/sh -c /usr/bin/php7.3 /var/www/html/magento2/bin/magento cron:run 2>&1 | grep -v "Ran jobs by schedule" >> /var/www/html/magento2/var/log/magento.cron.log
13513 ? S 0:00 grep -v Ran jobs by schedule
13536 ? S 2:56 /usr/bin/php7.3 /var/www/html/magento2/bin/magento queue:consumers:start product_action_attribute.update --single-thread --max-messages=2000
13538 ? S 2:57 /usr/bin/php7.3 /var/www/html/magento2/bin/magento queue:consumers:start product_action_attribute.website.update --single-thread --max-messages=2000
13540 ? S 2:56 /usr/bin/php7.3 /var/www/html/magento2/bin/magento queue:consumers:start exportProcessor --single-thread --max-messages=2000
The problem was the same with M2 CE 2.3.3 and I didn't found anything releavant to solve this issue or to pinpoint the root cause.
If anyone have faced this issue and found a fix, I will be happy to share.
Best regards,
Yannick