How to solve the problem of PHP7-FPM startup failure in Linux environment

How to solve PHP7-FPM startup failure in Linux environment

When using a Linux server to build a website or application, PHP7-FPM is a commonly used PHP FastCGI process manager. However, sometimes you encounter the problem that PHP7-FPM fails to start, which may cause the website to be unable to be accessed normally. In this article, we'll cover some common workarounds and provide specific code examples. I hope this information can help you quickly solve the problem of PHP7-FPM startup failure.

1. Check the PHP7-FPM configuration file

First, we need to check whether the PHP7-FPM configuration file is set correctly. Configuration files are usually located in the /etc/php/7.x/fpm/pool.d/ directory. You can configure the parameters of PHP7-FPM by editing these files. Make sure there are no syntax errors in the configuration file, and check whether there are duplicate configuration items or parameter errors.

Sample code:

sudo nano /etc/php/7.x/fpm/pool.d/www.conf

2. Check the PHP-FPM error log

PHP7-FPM usually records error information in the log file, we can Check the error log for more information about startup failures. The error log file is usually located in /var/log/php7.x-fpm.log or /var/log/syslog. Check the log file to learn the specific cause of the error.

Sample code:

sudo tail -f /var/log/php7.x-fpm.log

3. Check if the PHP7-FPM process is already running

Sometimes PHP7-FPM startup fails because the process is already running , at this time we need to stop the old PHP7-FPM process first, and then start the new PHP7-FPM. You can stop and start the PHP7-FPM process with the following command:

Sample code:

sudo systemctl stop php7.x-fpm
sudo systemctl start php7.x-fpm

4. Check whether the PHP7-FPM listening port is occupied

PHP7 -FPM startup failure may also be caused by the listening port being occupied by other processes. We can check the port occupancy through the netstat command. If we find that the port monitored by PHP7-FPM is occupied, we can modify the port settings in the configuration file.

Sample code:

netstat -tuln | grep 9000

5. Check the PHP7-FPM configuration items

Finally, check whether the PHP7-FPM configuration items are set correctly. Especially in new PHP versions, some configuration items may change. You can use the php-fpm command to test whether the PHP7-FPM configuration file has syntax errors.

Sample code:

sudo php-fpm7.x -t

Summary:

In a Linux environment, PHP7-FPM startup failure may be due to configuration file errors, error logs, process conflicts, port occupation, etc. Caused by. By checking configuration files, viewing error logs, stopping old processes, checking port occupancy and testing configuration items, we can help us solve the problem of PHP7-FPM startup failure. I hope the above method can help you successfully start PHP7-FPM and ensure the normal operation of the website.

The above is the detailed content of How to solve the problem of PHP7-FPM startup failure in Linux environment. For more information, please follow other related articles on the PHP Chinese website!