PHP exec Java cmd失败，权限被拒绝

问题描述

我目前正在编写一些需要调用jar的PHP脚本。我编写了一个测试脚本来测试Java -version cmd。

I am currently writing some PHP scripts that need to invoke jar. I wrote a test script to test Java -version cmd.

echo exec('whoami');
echo '<hr/>';

exec('java -version', $out);
var_dump($out);

页面返回如下：

apache
array(6) { [0]=> string(134) "OpenJDK 64-Bit Server VM warning: INFO: os::commit_memory(0x00007ff705000000, 2555904, 1) failed; error='Permission denied' (errno=13)" [1]=> string(1) "#" [2]=> string(76) "# There is insufficient memory for the Java Runtime Environment to continue." [3]=> string(100) "# Native memory allocation (malloc) failed to allocate 2555904 bytes for committing reserved memory." [4]=> string(57) "# An error report file with more information is saved as:" [5]=> string(29) "# /tmp/jvm-26720/hs_error.log" }

我有测试控制台中的cmd是正常的。

I have test the cmd in the console and it is normal.

[root@localhost ~]# java -version
java version "1.7.0_45"
OpenJDK Runtime Environment (rhel-2.4.3.3.el6-x86_64 u45-b15)
OpenJDK 64-Bit Server VM (build 24.45-b08, mixed mode)

有没有人可以帮我这个？

Is there anyone who can help me with this?

更新：这是hs_error.log

Update: Here is the hs_error.log

推荐答案

我有类似的问题。我在RedHat 7上复制了它（安装在Amazon EC2上）。

只有当selinux切换到许可模式时 - 问题才得以解决。

I had a similar issue. I duplicated it on the RedHat 7 (installed on the Amazon EC2).
Only when selinux was switched to the permissive mode - the issue was fixed.

1. Sudo或以 root登录


2. 检查状态： $ sestatus 或 $ getenforce 。


3. 要关闭它：
   
   
   
   
   • 临时： $ setenforce 0 。
   
   
   • 永久：编辑 / etc / selinux / config 文件
   
   

1. Sudo or login as root
2. To check the status: $ sestatus or $ getenforce.
3. To turn it off:
   • temporary: $ setenforce 0.
   • permanently: edit /etc/selinux/config file

---

经过深入研究后，看起来最好启用apache来使用内存并没有关闭模式：

setsebool -P httpd_execmem 1

更多info 。

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