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Part 4 : How to fix Nginx 504 Gateway Time-out for PrestaShop 1.7.6.3 on CWP7?

Welcome to our serious tutorial. When we are installing PrestaShop 1.7.6.3 on CWP7.pro server, we are getting error "Nginx 504 Gateway Time-out " That means CWP The gateway did not receive a timely response from the upstream server or application.
1. Adjust Timeout Value  for proxy settings 
# vi /etc/nginx/proxy.inc

proxy_connect_timeout 600s;
proxy_send_timeout 600;
proxy_read_timeout 600;
2. Change the default_socket_timeout 
# vi /opt/alt/php-fpm72/usr/php/php.ini

default_socket_timeout 600

Change PHP-FPM Configuration:

Default Location:
/opt/alt/php-fpm72/usr/etc/
/opt/alt/php-fpm72/usr/etc/php-fpm.d/
/opt/alt/php-fpm72/usr/etc/php-fpm.d/users/
3. Add following value cwpsvc.conf file :
 # vi /opt/alt/php-fpm72/usr/etc/php-fpm.d/cwpsvc.conf

[cwpsvc]
listen = /opt/alt/php-fpm72/usr/var/sockets/cwpsvc.sock
listen.owner = cwpsvc
listen.group = cwpsvc
listen.mode = 0640
user = cwpsvc
group = cwpsvc

;request_slowlog_timeout = 5s
;slowlog = /opt/alt/php-fpm72/usr/var/log/php-fpm-slowlog-cwpsvc.log
listen.allowed_clients = 127.0.0.1

pm = ondemand
pm.max_children = 1000
pm.process_idle_timeout = 300s
;listen.backlog = -1
request_terminate_timeout = 300s
rlimit_files = 131072
rlimit_core = unlimited
catch_workers_output = yes

env[HOSTNAME] = $HOSTNAME
env[TMP] = /tmp
env[TMPDIR] = /tmp
env[TEMP] = /tmp
env[PATH] = /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
4. Add following value nobody.conf file :
# vi /opt/alt/php-fpm72/usr/etc/php-fpm.d/users/nobody.conf

[nobody]
listen = /opt/alt/php-fpm72/usr/var/sockets/nobody.sock
listen.allowed_clients = 127.0.0.1

listen.owner = nobody
listen.group = nobody
listen.mode = 0660
user = nobody
group = nobody

;request_slowlog_timeout = 15s
;slowlog = /opt/alt/php-fpm72/usr/var/log/php-fpm-slowlog-nobody.log

pm = ondemand
pm.max_children = 1000
pm.max_requests = 6000
pm.process_idle_timeout = 300s

;listen.backlog = -1
request_terminate_timeout = 300s
rlimit_files = 131072
rlimit_core = unlimited
catch_workers_output = yes

env[HOSTNAME] = $HOSTNAME
env[TMP] = /tmp
env[TMPDIR] = /tmp
env[TEMP] = /tmp
env[PATH] = /usr/local/bin:/usr/bin:/bin
5. Change the following 
# vi /opt/alt/php-fpm72/usr/etc/php-fpm.d/users/datahead.conf

[datahead]
listen = /opt/alt/php-fpm72/usr/var/sockets/datahead.sock
listen.allowed_clients = 127.0.0.1

;listen.owner = "datahead"
listen.group = "nobody"
listen.mode = 0660
user = "datahead"
group = "datahead"

;request_slowlog_timeout = 15s
;slowlog = /opt/alt/php-fpm72/usr/var/log/php-fpm-slowlog-datahead.log

pm = ondemand
pm.max_children = 1000
pm.max_requests = 4000
pm.process_idle_timeout = 300s

;listen.backlog = -1
request_terminate_timeout = 300s
rlimit_files = 131072
rlimit_core = unlimited
catch_workers_output = yes

env[HOSTNAME] = $HOSTNAME
env[TMP] = /home/datahead/tmp
env[TMPDIR] = /home/datahead/tmp
env[TEMP] = /home/datahead/tmp
env[PATH] = /usr/local/bin:/usr/bin:/bin
N.B: Change the value only which is only marked as Blue.

Now Llet's add fastcgi_read_timeout variable inside our Nginx virtual host configuration. If you use PHP-FPM hosting then add (you can use 600s)
# vi /etc/nginx/conf.d/vhosts/datahead.biz.ssl.conf

 fastcgi_pass    unix:/opt/alt/php-fpm72/usr/var/sockets/datahead.sock;
 fastcgi_index   index.php;
        fastcgi_send_timeout 300s;
        fastcgi_read_timeout 300s;
 include         /etc/nginx/fastcgi_params;
If you use PHP-CGI , then use it nginx.conf file:
# Proxy settings
proxy_redirect      off;
proxy_set_header    Host            $host;
proxy_set_header    X-Real-IP       $remote_addr;
proxy_set_header    X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_pass_header   Set-Cookie;
proxy_connect_timeout   600;
proxy_send_timeout  600;
proxy_read_timeout  600;
fastcgi_send_timeout 600s;
fastcgi_read_timeout 600s;
proxy_buffers       32 4k;
If you use PHP Selector 2
# sed -i 's,^upload_max_filesize =.*$,upload_max_filesize = 4096M,' /opt/alt/php72/usr/php/php.ini
# sed -i 's,^post_max_size =.*$,post_max_size = 4146M,' /opt/alt/php72/usr/php/php.ini
# sed -i 's,^memory_limit =.*$,memory_limit = 5120M,' /opt/alt/php72/usr/php/php.ini
# sed -i 's,^max_input_time =.*$,max_input_time = 300,' /opt/alt/php72/usr/php/php.ini
# sed -i 's,^max_execution_time =.*$,max_execution_time = 300,' /opt/alt/php72/usr/php/php.ini

# sed -i 's,^; max_input_vars =.*$,max_input_vars = 5000,' /opt/alt/php72/usr/php/php.ini
# sed -i 's,^max_file_uploads =.*$,max_file_uploads = 50,' /opt/alt/php72/usr/php/php.ini

# sed -i 's,^allow_url_fopen =.*$,allow_url_fopen = On,' /opt/alt/php72/usr/php/php.ini
# sed -i 's,^allow_url_include =.*$,allow_url_include = Off,' /opt/alt/php72/usr/php/php.ini
# sed -i 's,^short_open_tag =.*$,short_open_tag = Off,' /opt/alt/php72/usr/php/php.ini
# sed -i 's,^;date.timezone =.*$,date.timezone = Asia/Dhaka,' /opt/alt/php72/usr/php/php.ini

# sed -i 's,^display_errors =.*$,display_errors = Off,' /opt/alt/php72/usr/php/php.ini
# sed -i 's,^expose_php =.*$,expose_php = Off,' /opt/alt/php72/usr/php/php.ini 

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