proc_open() not enough memory

Kayo

Hey guys, i have this error while installing the extension:

Using version ^0.1.3 for fof/drafts
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Package operations: 1 install, 0 updates, 0 removals
  - Installing fof/drafts (0.1.3):
Installation failed, reverting ./composer.json to its original content.
The following exception is caused by a lack of memory or swap, or not having swap configured
Check https://getcomposer.org/doc/articles/troubleshooting.md#proc-open-fork-failed-errors for details

PHP Warning:  proc_open(): fork failed - Cannot allocate memory in phar:///opt/bitnami/php/bin/composer.phar/vendor/symfony/console/Application.php on line 993

Warning: proc_open(): fork failed - Cannot allocate memory in phar:///opt/bitnami/php/bin/composer.phar/vendor/symfony/console/Application.php on line 993

  [ErrorException]
  proc_open(): fork failed - Cannot allocate memory


require [--dev] [--prefer-source] [--prefer-dist] [--no-progress] [--no-suggest] [--no-update] [--no-scripts] [--update-no-dev] [--update-with-dependencies] [--ignore-platform-reqs] [--prefer-stable] [--prefer-lowest] [--sort-packages] [-o|--optimize-autoloader] [-a|--classmap-authoritative] [--apcu-autoloader] [--] [<packages>]...

I read documentation and tells that it's because my vps has no enough memory for operation, is a gCloud VPS with 1.7GB and 1 core.

Never had this problem installing any other extension, any experient user can tell me if it's really that?

EDIT: The docs link -> https://getcomposer.org/doc/articles/troubleshooting.md#proc-open-fork-failed-errors

clarkwinkelmann

Kayo is it possible the 1.7GB are full ?

Can you install other extensions fine right now ?

Kayo

clarkwinkelmann I dont really know haha. But i'll update the VPS after to 3GB ram and tell here if worked

Kayo

clarkwinkelmann Upgraded VPS to 2.25GB and worked.

When i try to install Ban IPs extension i got the same error. Maybe flarum don't work very well to extension install with less than 2GB ram? It's good to see later.

clarkwinkelmann

Kayo you should usually be fine with 1GB. The real question here I think is not how much total RAM the server has, but rather, how much is unused.

If you have lots of things running on the server and depending how many apache/nginx/php can run at the same time, a big part of the RAM might be in use.

Creating SWAP for those rare cases where Composer doesn't have enough might be more cost-effective than upgrading the whole server 😇

I'm splitting this thread to keep the extension discussion clean.

Kayo

clarkwinkelmann Okay. Thank u very much.

I use the VPS only for flarum. I dont do much stuff on the SSH because i'm not very good with command line and (really) don't want my forum down, but will try create or increase swap later. Thank u again.

matteocontrini

On Ubuntu run these to create a 2 GB swap file:

sudo fallocate -l 2G /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile
sudo sh -c 'echo "/swapfile none swap sw 0 0" >> /etc/fstab'
sudo sysctl vm.swappiness=10
sudo sysctl vm.vfs_cache_pressure=50

Then edit the file /etc/sysctl.conf and add:

vm.swappiness=10
vm.vfs_cache_pressure=50

To make the swappines settings permanent (the swappines determines how likely the system is to use the swap instead of the memory).