Nginx and php5-fpm have stopped working

I am moving a Drupal 7 application on Ubuntu 14.04 from development to
production. I use nginx (1.4.6-1ubuntu3.2) and php5-fpm
(5.5.9+dfsg-1ubuntu4.9).

The production machine is a VPS hosted at 1&1 and was running alright up
until about 4 hours ago. Nginx had been giving some errors on startup:

2015/05/17 16:21:39 [info] 27859#0: Using 32768KiB of shared memory 

for
push module in /etc/nginx/nginx.conf:85
2015/05/17 16:21:39 [alert] 27859#0: mmap(MAP_ANON|MAP_SHARED,
1048576)
failed (12: Cannot allocate memory)

but nginx and php5-fpm were working alright.

Later, however, after I had uploaded some corrected theme data
(basically
CSS generated from SASS), nginx went down. Since then I have been unable
to
make nginx AND php5-fpm start. I can start one or the other.
Unfortunately
php5-fpm has not generated any error messages that I have been able to
find.

Rebooting doesn’t solve the problem.

Nginx, however, now generates the following error.

2015/05/17 23:40:40 [alert] 1559#0: mmap(MAP_ANON|MAP_SHARED, 

failed (12: Cannot allocate memory)

I’m pretty sure I have enough memory. The command free -m gives:

                    total       used       free     shared 

buffers
cached
Mem: 8192 168 8023 126 0
149
-/+ buffers/cache: 19 8172
Swap: 0 0 0

I have seen other discussions with similar symptoms which seem to
suggest
that parameters of the VPS need to be adjusted by the provider. Is this
such
a case? If so, which parameters do I need to ask to have adjusted?

I’m out of my depth on this, so I’d be grateful for any assistance
anyone
could offer.

Steve

Posted at Nginx Forum:
http://forum.nginx.org/read.php?2,258946,258946#msg-258946

I’ve got round this by removing nginx-extras. The error messages no
longer
appear in the logs and - more importantly - nginx and php5-fpm both now
run
again together. The website still doesn’t work properly, but I think
that’s
a Drupal problem

Steve

Posted at Nginx Forum:
http://forum.nginx.org/read.php?2,258946,258966#msg-258966

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