cent os7.2 安装composer后报错proc_open(): fork failed - Cannot allocate memory
1.问题描述 配置阿里云服务器，Cent OS7.2系统，从composer官网下载，解压。 然后用composer安装laravel项目，报错 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 Warning: proc_open(): fork failed - Cannot allocate memory in phar:///usr/local/bin/composer.phar/vendor/symfony/console/Application.php on line 954 Warning: proc_open(): fork failed - Cannot allocate memory in phar:///usr/local/bin/composer.phar/vendor/symfony/console/Application.php on line 954 [ErrorException] proc_open(): fork failed - Cannot allocate memory 2.解决过程 根据所提供网址访问https://getcomposer.org/doc/articles/troubleshooting.md#proc-open-fork-failed-errors 上面显示有提供问题发生的可能原因和解决办法 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 运行这几条命令后问题解决 3总结 根据问题描述可能是内存原因，maybe是没有给composer配置内存？ 参考网址 https://getcomposer.org/doc/articles/troubleshooting.md