mjhjmtu

I updated my CentOS distribution a little bit back, and was surprised to find my nginx wordpress website and my seafile server not working and giving error 504 timeouts.. After a while, I was able to fix the issue for the website by switching the php socket from 127.0.0.1:9000 to server unix:/var/run/php5-fpm.sock; like so:

upstream php 
 server unix:/var/run/php5-fpm.sock;
 server 127.0.0.1:9000;
 
include /etc/nginx/mime.types;
default_type application/octet-stream;

# Load modular configuration files from the /etc/nginx/conf.d directory.
# See http://nginx.org/en/docs/ngx_core_module.html#include
# for more information.
include /etc/nginx/conf.d/*.conf;

And changing the www.conf respectively.

; Start a new pool named 'www'.

[www]



; The address on which to accept FastCGI requests.

; Valid syntaxes are:

; 'ip.add.re.ss:port' - to listen on a TCP socket to a specific address 
on

; a specific port;

; 'port' - to listen on a TCP socket to all addresses on a

; specific port;

; '/path/to/unix/socket' - to listen on a unix socket.
; Note: This value is mandatory.
listen = /var/run/php5-fpm.sock

; Set listen(2) backlog. A value of '-1' means unlimited. 
; Default Value: -1
;listen.backlog = -1

; List of ipv4 addresses of FastCGI clients which are allowed to connect.
; Equivalent to the FCGI_WEB_SERVER_ADDRS environment variable in the original
; PHP FCGI (5.2.2+). Makes sense only with a tcp listening socket. Each address
; must be separated by a comma. If this value is left blank, connections will be
; accepted from any ip address.
; Default Value: any
listen.allowed_clients = 127.0.0.1

; Set permissions for unix socket, if one is used. In Linux, read/write
; permissions must be set in order to allow connections from a web server. Many
; BSD-derived systems allow connections regardless of permissions.
; Default Values: user and group are set as the running user
; mode is set to 0666
;listen.owner = nobody
;listen.group = nobody
;listen.mode = 0666

; Unix user/group of processes
; Note: The user is mandatory. If the group is not set, the default user's group
; will be used.
; RPM: apache Choosed to be able to access some dir as httpd
user = apache
; RPM: Keep a group allowed to write in log dir.
group = apache
[snip]

This solved the issue for my wordpress nginx server, but will not solve the issue for my seafile server. I have figured out that the program seafile starts 2 tcp sockets on 127.0.0.1:8000 and 127.0.0.1:8082, yet no matter what I can do, they seem to timeout. I don't know how to change these tcp sockets in the program to unix sockets; I suspect it might be impossible.

Relatedly, I could not seem to login to my mariadb mysql databases if I used `127.0.0.1' as my ip. I could however login if I used 'localhost', and had to change the logins for both wordpress and seafile respectively.

Any idea why this might be happening? What in centos is stopping me from access local sockets like this?