502 bad gateway nginx and minstall!

joca91

Hello!

I have a Debian vps with minstall installed on it (nginx, php, mysql).
When i did a upgrade on my minstall installation yesterday,
i got the message "502 Bad Gateway" when i visited one of my wordpress websites hosted on the vps using minstall.

Please help me with this error!

Thanks in advance!

Profforg

If you are fine with payed help - welcome to private messaging

It's crazy to ask help for every question about Linux at LET. It's not support board. If you want your websites to work, hire sysadmin.

berkay

Try chmod 666 /var/run/php5-fpm.sock

joca91

@introducial said:
Try chmod 666 /var/run/php5-fpm.sock

I tried it but i got the following error:
chmod: cannot access/var/run/php5-fpm.sock': No such file or directory`

BK_

@Profforg said:
It's crazy to ask help for every question about Linux at LET. It's not support board. If you want your websites to work, hire sysadmin.

LET is a community forum used by industry professionals, hobbyists, and complete newbs. People are more than welcome to ask questions about things they're not knowledgeable on - he's not asking for us to move mountains for him.

Give this guy a break, it's his first post.

rokok

if you need help, provide more details

tail /var/log/nginx/error.log

berkay

@joca91 said:
chmod: cannot access/var/run/php5-fpm.sock': No such file or directory`

What does listen and listen.mode directives look like in /etc/php5/fpm/pool.d/www.conf? I'm suspecting of a file permission issue however it can be another thing too, error log would also help.

joca91

@rokok said:
if you need help, provide more details

tail /var/log/nginx/error.log

my error.log file in /var/log/nginx/ is empty

joca91

@introducial said:
What does listen and listen.mode directives look like in /etc/php5/fpm/pool.d/www.conf? I'm suspecting of a file permission issue however it can be another thing too, error log would also help.

There is no www.conf file in the directory: /etc/php5/fpm/pool.d/www.conf.
But is two another .conf filesthere, here is them in full:

johan.conf:

`[johan]
listen = /home/johan/http/private/php.socket

user = johan
group = johan
pm = ondemand
pm.max_children = 4
pm.max_requests = 500
php_flag[expose_php] = off
php_value[max_execution_time] = 120
php_value[memory_limit] = 64M
`

www-data.conf:

[www-data] listen = /dev/shm/php.socket user = www-data group = www-data pm = ondemand pm.max_children = 4 pm.max_requests = 500 php_flag[expose_php] = off php_value[max_execution_time] = 120 php_value[memory_limit] = 64M

berkay

Well, then try chmod 666 /home/johan/http/private/php.socket and chmod 666 /dev/shm/php.socket

joca91

@introducial said:
Well, then try chmod 666 /home/johan/http/private/php.socket and chmod 666 /dev/shm/php.socket

Thanks! that help me out! now everything working and running again!

ErawanArifNugroho

Incase you have problem in the future after updating the nginx and php, try to change the php pool config for example :

user = johan
group = johan
listen.owner = johan
listen.group = johan

black

You can also use ports, no permission issues there.

mikho

Chmod the socket file will only work until you reboot the server.
Then it will go back to 502 bad gateway again.

The bug reports from nginx suggests another solution, even if its not a correct solution in a multi user environment like minstall or tuxlite provides.

The solution is to change the user and group parameters to nginx or www-data depending on your installation.
Don't forget to restart php and nginx to actually see the changes you made.

This "survives" a reboot.
Another solution is to use ports instead of sockets. However some claim that it is slower then using sockets.

mustafaramadhan

Try add 'listen.mode = 0666' under '[www-data]'

FirstVM_com

something wrong between php and nginx. check php config

Blanoz

@black said:
You can also use ports, no permission issues there.

Speed and security penalty.

joca91

@ErawanArifNugroho said:
Incase you have problem in the future after updating the nginx and php, try to change the php pool config for example :

> user = johan
> group = johan
> listen.owner = johan
> listen.group = johan
> 

Thanks! i will try it!