一、安装PHP8.0以上
我这里使用PHP8.0.30

[root@localhost ~]# php -v
PHP 8.0.30 (cli) (built: Aug  3 2023 17:13:08) ( NTS gcc x86_64 )
Copyright (c) The PHP Group
Zend Engine v4.0.30, Copyright (c) Zend Technologies
[root@localhost ~]# 

安装方法参考

二、安装MYSQL8.0以上
我这里使用mysql8.0.35

[root@localhost ~]# mysql -uroot -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 10
Server version: 8.0.35 MySQL Community Server - GPL

Copyright (c) 2000, 2023, Oracle and/or its affiliates.

三、安装nginx或apache，
我这里使用apache，版本：2.4.6

[root@localhost ~]# httpd -v
Server version: Apache/2.4.6 (CentOS)
Server built:   May 30 2023 14:01:11
[root@localhost ~]# 

apache安装方法有编译安装
这里使用YUM来再安装一次

#检查旧版apche,并卸载旧版      
[root@localhost ~]# rpm -qa | grep httpd
[root@localhost ~]# yum  remove httpd*
[root@localhost ~]# yum install httpd
[root@localhost ~]# systemctl start httpd

# Apache配置文件：

```go
[root@localhost ~]# find / -name httpd
/run/httpd
/etc/sysconfig/httpd
/etc/logrotate.d/httpd
/etc/httpd
/var/log/httpd
/var/cache/httpd
/usr/sbin/httpd
/usr/lib64/httpd
/usr/share/httpd
/usr/libexec/initscripts/legacy-actions/httpd
/data/httpd
[root@localhost ~]# 

[root@localhost ~]# find / -name httpd.conf
/etc/httpd/conf/httpd.conf
/usr/lib/tmpfiles.d/httpd.conf
[root@localhost ~]# 

#开放80端口
[root@localhost ~]# firewall-cmd --zone=public --add-port=80/tcp --permanent
success
[root@localhost ~]# 
[root@localhost ~]# firewall-cmd --zone=public --add-port=443/tcp --permanent    
success
[root@localhost ~]# 
#检查确认是否开启
[root@localhost ~]# firewall-cmd --reload 
[root@localhost ~]# firewall-cmd  --list-ports
80/tcp  443/tcp 
[root@localhost ~]# 
[root@localhost ~]# 

三、安装Nextcloud
1、

#启用Apache PHP模块
[root@localhost ~]# yum install mod_php
#vim 

2、

#启用Aapache https访问模块
[root@localhost ~]# vim /etc/httpd/conf/httpd.conf
#增加与修改处
#1、DirectoryIndex处增加index.php
#
<IfModule dir_module>
    DirectoryIndex index.php index.html
</IfModule>
#2、 LoadModule 处增加
   LoadModule proxy_module modules/mod_proxy.so
   LoadModule proxy_fcgi_module modules/mod_proxy_fcgi.so

#3、AddType处增加
    AddType application/x-httpd-php .php
    AddType text/html .php
#、测试
[root@localhost ~]# echo " <?php phpinfo() ?>" > /var/www/html/index.php
[root@localhost ~]# systemctl restart httpd 
[root@localhost ~]# echo " <?php phpinfo() ?>" > /var/www/html/index.php
[root@localhost ~]# systemctl restart httpd 

3、创建Nextcloud目录，并下载最新Nextcloud文件到创建目录

[root@localhost ~]# mkdir -p /data/nextcloud/
[root@localhost ~]# chown -R apache. /data/nextcloud/
[root@localhost ~]# chmod -R 755 /data/nextcloud/
[root@localhost ~]#  cd /data/nextcloud/
[root@localhost nextcloud]#  wget https://download.nextcloud.com/server/releases/latest.zip
[root@localhost nextcloud]# ls
latest.zip
[root@localhost nextcloud]# unzip latest.zip 
[root@localhost nextcloud]# ls
latest.zip  nextcloud
[root@localhost nextcloud]# rm -rf latest.zip 
#修改发布目录
[root@localhost html]# vim /etc/httpd/conf/httpd.conf
[root@localhost html]# systemctl restart httpd

4、创建数据库，并登录
[root@localhost ~]# mysql -uroot -p

mysql> CREATE DATABASE nextcloud;
Query OK, 1 row affected (0.01 sec)
mysql> create user 'nextcloud'@'%' identified by '123456';
Query OK, 0 rows affected (0.01 sec)
mysql> grant all privileges on nextcloud.*to 'nextcloud'@'%';
Query OK, 0 rows affected (0.00 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
mysql> 

四、优化nextcloud
1、

[root@localhost ~]# vim /data/nextcloud/nextcloud/config/config.php
#在Nextcloud的config.php配置文件后面添加：
   'activity_expire_days' => '90', #使得MySQL数据库中oc_activity表中的数据记录只保存90天的
  'memcache.local' => '\\OC\\Memcache\\Redis', #配置redis
  'redis' =>
  array (
    'host' => 'localhost',
    'port' => 6379,
  ),
  'memcache.locking' => '\\OC\\Memcache\\Redis',
  'check_for_working_wellknown_setup' => false,  
  'default_phone_region' => 'CN',
);
~  

2、

安装下面三个模块

yum install php-imagick php-gmp php-opcache

3、

[root@localhost ~]# vim /etc/php.ini 

把memory_limit值修改为512M

4、

vim /data/nextcloud/nextcloud/config/config.php
#增加：
'default_phone_region' => 'CN',

5、

vim /data/nextcloud/nextcloud/config/config.php
#增加：
'check_for_working_wellknown_setup' => false,

6、

这个错误大多是配置redis后出现的
检查有没有安装redis，安装后还需要安装php-redis扩展

[root@localhost ~]# yum install redis
[root@localhost ~]# systemctl start redis
[root@localhost ~]# yum install php-redis

7、

启用https访问

[root@localhost ~]# yum install mod_ssl openssl 
[root@localhost ~]# vim /etc/httpd/conf.d/ssl.conf 

8、

点击后面查看哪些文件无效，大部份是.htaccess .user.ini 两个文件，可以重nextcloud目录重新拷贝过来
9、

[root@localhost nextcloud]# vim /etc/php.ini 

在php配置文件中注释掉output_buffering 。找到这个，前面加上;