upgrade php fpm ubuntu nginx 7.4 to 8.2

Table of Contents

upgrade php7.4 to 8.2 ubuntu

its better install php 8.0 and remove 7.4 or change to socket from tcp.

as of now php8.2

List php 7.4 extensions

dpkg -l | grep php7.4

Install php 8

in ubuntu 20/04 LTS default php installation is php 8

add repo

sudo add–apt–repository ppa:ondrej/php

sudo LC_ALL=C.UTF-8 add-apt-repository -y ppa:ondrej/php

and update

sudo apt-get update && sudo apt-get install php8.0-fpm

sudo apt-get update && sudo apt-get install php8.2-fpm

sudo apt install php8.0-common php8.0-mysql php8.0-xml php8.0-xmlrpc php8.0-curl php8.0-gd php8.0-imagick php8.0-cli php8.0-dev php8.0-imap php8.0-mbstring php8.0-opcache php8.0-soap php8.0-zip php8.0-intl -y

php -v
PHP 8.0.27 (cli) (built: Jan 6 2023 15:27:43) ( NTS )
Copyright (c) The PHP Group
Zend Engine v4.0.27, Copyright (c) Zend Technologies
with Zend OPcache v8.0.27, Copyright (c), by Zend Technologies

root@ubuntu-s-2vcpu-4gb-intel-blr1-01:/etc/php# php -v
PHP 8.2.1 (cli) (built: Jan 6 2023 15:18:18) (NTS)
Copyright (c) The PHP Group
Zend Engine v4.2.1, Copyright (c) Zend Technologies
with Zend OPcache v8.2.1, Copyright (c), by Zend Technologies

root@ubuntu-s-2vcpu-4gb-intel-blr1-01:~#

Configuring php 8.o for nginx

Delete the default PHP 8.0 worker pool configuration.
```
$ sudo rm /etc/php/8.0/fpm/pool.d/*
```

Copy the configuration from PHP-FPM 7.4 to PHP-FPM 8.0.

$ sudo cp -rL /etc/php/7.4/fpm/pool.d/* /etc/php/8.0/fpm/pool.d/

Configuring php 8.2 for nginx

Delete the default PHP 8.2 worker pool configuration.

$ sudo rm /etc/php/8.2/fpm/pool.d/*

Copy the configuration from PHP-FPM 7.4 to PHP-FPM 8.2.

$ sudo cp -rL /etc/php/7.4/fpm/pool.d/* /etc/php/8.2/fpm/pool.d/

Configuring listening socket or Port for php 8.2 fpm

/etc/php/8.2/fpm/pool.d/www.conf

my case If the old socket is 127.0.0.1:9000: same with nginx config file

Update php ini values in php 8 folder

/etc/php/7.4/fpm/php.ini, then copy those settings to the main PHP 8.0 configuration file /etc/php/8.0/fpm/php.ini.

Php ini values

max_execution_time

memory_limit

post_max_size

upload_max_filesize

date.timezone

memory_limit = 256M

max_execution_time my case 300s or 5 minutesupload_max_filesize 65MB

Verify new php 8.2 confugration

sudo php-fpm8.2 -t

root@ubuntu-s-2vcpu-4gb-intel-blr1-01:~# sudo php-fpm8.2 -t [12-Jan-2023 09:41:57] NOTICE: configuration file /etc/php/8.2/fpm/php-fpm.conf test is successful

reload php 8.2 apply changes

sudo systemctl reload php8.2-fpm.service

do not enable on start up if we keep them.

sudo systemctl disable –now php7.4-fpm.service

sudo systemctl disable –now php8.0-fpm.service

check which fpm manager running

ps aux | grep php

root@ubuntu-s-2vcpu-4gb-intel-blr1-01:~# ps aux | grep php
root 6531 0.0 0.3 239560 13368 ? Ss 2022 3:22 php-fpm: master process (/etc/php/7.4/fpm/php-fpm.conf)

finally start the php 8.2 service

sudo systemctl stop php7.4-fpm.service && sudo systemctl start php8.2-fpm.service

root@ubuntu-s-2vcpu-4gb-intel-blr1-01:~# ps aux | grep php root 831891 0.6 0.6 216160 25332 ? Ss 09:53 0:00 php-fpm: master process (/etc/php/8.2/fpm/php-fpm.conf)

Uninstall/Remove PHP 7.x and Extensions

or keep it as backup change tcp port listening socket

/var/run/php/php7.4-fpm.sock or

127.0.0.1:9001

To uninstall PHP 7.x and all of its extensions, run the command below.

Monitor errors in the nginx log

tail -f /var/log/nginx/error.log

Note: WordPress plugins & themes need to update their php scripts according to php8.1 (check new features & fixes) new version prone to bugs.

sudo apt-get purge php7.*

E: The repository 'http://ppa.launchpad.net/certbot/certbot/ubuntu focal Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default.