Nginx unix domain socket error

nginx

I use fedora 17, and when I setup nginx with uwsgi using unix domain socket, when I place the socket in a directory with proper permission it's ok, but when I place the socket in the /tmp it will cause nginx error:

connect() to unix:/tmp/MySite.sock failed (2: No such file or directory) while connecting to upstream

The file does exist and has read/write permission for nginx user. But what cause this error, its really drive me crazy, can somebody figure it out.

Best Answer

You can't place sockets intended for interprocess communication in /tmp.

For security reasons, recent versions of Fedora use namespaced temporary directories, meaning every service sees a completely different /tmp and can only see its own files in that directory.

To resolve the issue, place the socket in a different directory, such as /run (formerly known as /var/run).

Related Solutions

Nginx – Django, nginx, FastCGI – running via unix sockets, permission problems

Nginx is running under some user (on Debian it is usually www-data), you can check it by:

ps aux | grep nginx | grep worker

User will be in the first column.

This user have to have access to /tmp/django.socket for writing and reading. You can solve it by running django under the same user as nginx is running (i.e. www-data on Debian), or you have to add nginx user to the same group, as user, under which are you running django, and socket have to have permission to read and write for group.

The first solution is simplier and (for me) better.

Nginx – What should be proper permission of unix socket

; 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 = nginx ;(or the user that the Nginx is running as)
listen.group = nginx ;(or the group that the Nginx is running as)
listen.mode = 0660

Best Answer

Related Solutions

Nginx – Django, nginx, FastCGI – running via unix sockets, permission problems

Nginx – What should be proper permission of unix socket

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