proc_open(): fork failed errors#
If composer shows proc_open() fork failed on some commands:
PHP Fatal error: Uncaught exception 'ErrorException' with message 'proc_open(): fork failed - Cannot allocate memory' in phar
This could be happening because the VPS runs out of memory and has no Swap space enabled.
free -m
total used free shared buffers cached
Mem: 2048 357 1690 0 0 237
-/+ buffers/cache: 119 1928
Swap: 0 0 0
To enable the swap you can use for example:
/bin/dd if=/dev/zero of=/var/swap.1 bs=1M count=1024
/sbin/mkswap /var/swap.1
/sbin/swapon /var/swap.1
or add to "etc/fstab"
/var/swap.1 none swap sw 0 0
php5dismod xdebugfree -m
total used free shared buffers cached
Mem: 2048 357 1690 0 0 237
-/+ buffers/cache: 119 1928
Swap: 0 0 0To enable the swap you can use for example:
/bin/dd if=/dev/zero of=/var/swap.1 bs=1M count=1024
/sbin/mkswap /var/swap.1
/sbin/swapon /var/swap.1
or add to "etc/fstab"
/var/swap.1 none swap sw 0 0
http://www.coderblog.de/how-to-install-use-configure-xdebug-ubuntu/
