PHP-FPM (FastCGI Process Manager) is an alternative PHP FastCGI implementation with some additional features useful for sites of any size, especially busier sites. In this article, we will cover how to restart PHP-FPM on Ubuntu.
Before we begin, please make sure you have the necessary permissions to perform this action on your server.
First, we need to locate the PHP-FPM service on our system. We can do this by running the following command:
ps aux | grep php-fpm
This will return a list of processes running on the system, with "php-fpm" in the command name. The first column of the output will contain the process ID (PID) of the PHP-FPM process.
Next, we need to stop the PHP-FPM process. We can do this by running the following command, using the PID we obtained in the previous step:
sudo kill [PID]
This will stop the PHP-FPM process.
To start the PHP-FPM process again, we can use the following command:
sudo service php7.2-fpm start
If you are using different version of PHP you have to use appropriate version.
sudo service php7.4-fpm start
You can check the status of the PHP-FPM process by running the following command:
sudo service php7.2-fpm status
If you want to restart the PHP-FPM process, you can use the following command:
sudo service php7.2-fpm restart
It's important to note that, the above commands will work if you are running the Ubuntu version that uses systemd. If you are running an older version, you may need to use the traditional SysV init script commands.
In this article, we have covered how to restart PHP-FPM on Ubuntu. We have shown how to locate the PHP-FPM service, stop it, start it, and check its status. Additionally, you can use the restart command to do all of these steps in one command. It's important to always test your changes in a development environment before applying them to a production server.
In addition to restarting PHP-FPM on Ubuntu, there are a few other related topics that are worth discussing.
First, it's important to understand how PHP-FPM works. PHP-FPM is a FastCGI process manager that is used to handle PHP requests. It works by spawning a pool of worker processes that handle the incoming PHP requests. These worker processes are responsible for executing the PHP code, and returning the results to the web server.
One of the advantages of using PHP-FPM is that it allows for more fine-grained control over the PHP worker processes. For example, you can configure the number of worker processes, the amount of memory that each process is allowed to use, and the maximum number of requests that each process can handle. This can be useful for optimizing the performance of your PHP applications, particularly on busy sites.
Another advantage of PHP-FPM is that it allows for more flexible deployment options. For example, you can run multiple PHP-FPM pools on the same server, each with different configurations. This can be useful for running multiple PHP applications on the same server, or for isolating different parts of a single application.
It's also worth noting that, while PHP-FPM is commonly used with Nginx, it can also be used with other web servers such as Apache. However, the configuration process may differ depending on the web server you are using.
When working with PHP-FPM, it's also important to keep an eye on the performance metrics. These metrics can help you identify potential bottlenecks and can help you optimize the performance of your PHP applications. Some of the key metrics to watch include the number of active worker processes, the amount of memory used by each process, and the number of requests per second.
In conclusion, PHP-FPM is a powerful tool for handling PHP requests, and provides a number of advantages over traditional FastCGI implementations. It allows for more fine-grained control over the worker processes, and more flexible deployment options. Additionally, it's important to keep an eye on performance metrics and adjust the configurations accordingly to achieve optimal performance.
Popular questions
- How do I locate the PHP-FPM service on my Ubuntu system?
You can locate the PHP-FPM service on your Ubuntu system by running the command ps aux | grep php-fpm. This will return a list of processes running on the system, with "php-fpm" in the command name. The first column of the output will contain the process ID (PID) of the PHP-FPM process.
- How do I stop the PHP-FPM process on Ubuntu?
You can stop the PHP-FPM process on Ubuntu by running the command sudo kill [PID], where [PID] is the process ID of the PHP-FPM process that you obtained in the previous step.
- How do I start the PHP-FPM process on Ubuntu?
You can start the PHP-FPM process on Ubuntu by running the command sudo service php7.2-fpm start. If you are using different version of PHP you have to use appropriate version. sudo service php7.4-fpm start
- How do I check the status of the PHP-FPM process on Ubuntu?
You can check the status of the PHP-FPM process on Ubuntu by running the command sudo service php7.2-fpm status.
- How do I restart the PHP-FPM process on Ubuntu?
You can restart the PHP-FPM process on Ubuntu by running the command sudo service php7.2-fpm restart. This command will stop the current PHP-FPM process, and then start it again.
Tag
PHP-FPM
