composer安装fxp插件时候提示内存不足且没有交换空间的解决办法

出现的错误如下所示:

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


Warning: proc_open(): fork failed - Cannot allocate memory in phar:///usr/bin/composer/vendor/symfony/console/Application.php on line 979
                                                     
  [ErrorException]                                   
  proc_open(): fork failed - Cannot allocate memory


composer require The following exception is caused by a lack of memory or swap [ErrorException] proc_open(): fork failed - Cannot allocate memory

解决办法如下所示:

The following exception is caused by a lack of memory and not having swap 
Check https://getcomposer.org/doc/articles/troubleshooting.md#proc-open-for details

 http://www.linuxidc.com/Linux/2010-09/28915.htm ubuntu增加交换空间的步骤

提供了创建交换空间的方法

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 -mtotal 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

下面是整个过程

root@tyr:/var/www/html/laravel# ./composer.phar global require "laravel/installer=~1.1" Changed current directory to /root/.composer PHP Fatal error: Call to undefined method Fxp\Composer\AssetPlugin\Package\Version\VersionParser::parseLinks() in /root/.composer/vendor/fxp/composer-asset-plugin/Repository/VcsPackageFilter.php on line 272Fatal error: Call to undefined method Fxp\Composer\AssetPlugin\Package\Version\VersionParser::parseLinks() in /root/.composer/vendor/fxp/composer-asset-plugin/Repository/VcsPackageFilter.php on line 272 root@tyr:/var/www/html/laravel# composer require "fxp/composer-asset-plugin:~1.0" ./composer.json has been created Loading composer repositories with package information Updating dependencies (including require-dev)- Installing fxp/composer-asset-plugin (v1.0.3)Downloading: 100% The following exception is caused by a lack of memory and not having swap configured Check https://getcomposer.org/doc/articles/troubleshooting.md#proc-open-fork-failed-errors for details PHP Fatal error: Uncaught exception 'ErrorException' with message 'proc_open(): fork failed - Cannot allocate memory' in phar:///usr/local/bin/composer/vendor/symfony/console/Symfony/Component/Console/Application.php:974 Stack trace: #0 [internal function]: Composer\Util\ErrorHandler::handle(2, 'proc_open(): fo...', 'phar:///usr/loc...', 974, Array) #1 phar:///usr/local/bin/composer/vendor/symfony/console/Symfony/Component/Console/Application.php(974): proc_open('stty -a | grep ...', Array, NULL, NULL, NULL, Array) #2 phar:///usr/local/bin/composer/vendor/symfony/console/Symfony/Component/Console/Application.php(784): Symfony\Component\Console\Application->getSttyColumns() #3 phar:///usr/local/bin/composer/vendor/symfony/console/Symfony/Component/Console/Application.php(745): Symfony\Component\Console\Application->getTerminalDimensions() #4 phar:///usr/local/bin/composer/vendor/symfony/console/Symfony/Component/Console/Application.php(675): Symfony\Component\Console\Application->getTerminalWidth() #5 phar:///usr/local/bin/com in phar:///usr/local/bin/composer/vendor/symfony/console/Symfony/Component/Console/Application.php on line 974 Fatal error: Uncaught exception 'ErrorException' with message 'proc_open(): fork failed - Cannot allocate memory' in phar:///usr/local/bin/composer/vendor/symfony/console/Symfony/Component/Console/Application.php:974 Stack trace: #0 [internal function]: Composer\Util\ErrorHandler::handle(2, 'proc_open(): fo...', 'phar:///usr/loc...', 974, Array) #1 phar:///usr/local/bin/composer/vendor/symfony/console/Symfony/Component/Console/Application.php(974): proc_open('stty -a | grep ...', Array, NULL, NULL, NULL, Array) #2 phar:///usr/local/bin/composer/vendor/symfony/console/Symfony/Component/Console/Application.php(784): Symfony\Component\Console\Application->getSttyColumns() #3 phar:///usr/local/bin/composer/vendor/symfony/console/Symfony/Component/Console/Application.php(745): Symfony\Component\Console\Application->getTerminalDimensions() #4 phar:///usr/local/bin/composer/vendor/symfony/console/Symfony/Component/Console/Application.php(675): Symfony\Component\Console\Application->getTerminalWidth() #5 phar:///usr/local/bin/com in phar:///usr/local/bin/composer/vendor/symfony/console/Symfony/Component/Console/Application.php on line 974 root@tyr:/var/www/html/laravel# free -m total used free shared buffers cached Mem: 488 414 74 24 1 71 -/+ buffers/cache: 340 147 Swap: 0 0 0 root@tyr:/var/www/html/laravel# /bin/dd if=/dev/zero of=/var/swap.1 bs=1M count=1024 1024+0 records in 1024+0 records out 1073741824 bytes (1.1 GB) copied, 25.3413 s, 42.4 MB/s root@tyr:/var/www/html/laravel# /sbin/mkswap /var/swap.1 Setting up swapspace version 1, size = 1048572 KiB no label, UUID=60a9b908-925a-4161-8fca-7ae2d5a76154 root@tyr:/var/www/html/laravel# /sbin/swapon /var/swap.1 root@tyr:/var/www/html/laravel# free -m total used free shared buffers cached Mem: 488 474 13 24 2 127 -/+ buffers/cache: 344 143 Swap: 1023 0 1023 root@tyr:/var/www/html/laravel# composer require "fxp/composer-asset-plugin:~1.0" ./composer.json has been updated Loading composer repositories with package information Updating dependencies (including require-dev)- Installing fxp/composer-asset-plugin (v1.0.3)Loading from cacheWriting lock file Generating autoload files root@tyr:/var/www/html/laravel#

来源:http://www.cnblogs.com/asworm/p/4886210.html

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