Magneto performs a readiness check before installing or updating extensions. If this check fails, it will not allow you to proceed. There are two common reasons for a readiness check failure&mdashincorrectly configured cron tasks and low PHP-FPM memory limits. The PHP-FPM memory limit needs to be set very high, or Magento becomes unstable and will not display error messages.
This script will address both issues. Save the following script on your server as "magento_patch.sh".
#!/bin/bash # Move the crontab to the right place mv -f /var/spool/cron/nginx /var/spool/cron/crontabs/nginx # Fix PHP memory limit sed -i -e 's/php_admin_value\[memory_limit\] = 756M/php_admin_value\[memory_limit\] = 2G/' /etc/php/7.0/fpm/pool.d/www.conf # Restart PHP-FPM systemctl restart php7.0-fpm.service
Run the script.
chmod +x magento_patch.sh; ./magento_patch.sh
After the script completes, wait a minute for the cron script to run and then initiate a new readiness check.
There are several other, less common reasons for a readiness check failure. Please refer to the official documentation, which has the latest information.
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