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geoweaser's questions

Martin Hope
geoweaser
Asked: 2014-06-21 12:22:45 +0800 CST
  • 0

I have a problem with accessing files on an ext4 file system mounted as type NFS on a Linux server running CENTOS 6.5. I know the files exist on this file system because I can see them when I explicitly call them (e.g. with ls, awk, or cat), but are not visible to some programs like rsync or when piped from ls into another program like grep or awk.

As an example to clarify, the following will return empty:

ls /mnt/seisvault2/data/sac/201402/20140203_220000_MAN/ | grep WCI\.BH1\.IU.10

While this shows me that the file actually exists:

ls /mnt/seisvault2/data/sac/201402/20140203_220000_MAN/WCI.BH1.IU.10.

In the numerous directories where this is a problem, most files appear normally, without needing to be called explicitly as shown in the example.

Can anyone help me understand this problem?

As an example of why this is a problem, rsync -a copies the "missing" files on its first run, but for each subsequent run, it doesn't think the file is in the target directory, and so copies it again.

linux
Martin Hope
geoweaser
Asked: 2012-02-07 07:17:18 +0800 CST
  • 5

I am running php 5.3.3 on rhel 6.2 with Apache 2.2.15 and am failing to get PHP code interpreted by Apache.

There are no errors (in the system log, httpd/error_log, or php_errors.log) - I have enabled error reporting in php.ini: 

error_reporting = E_ALL & ~E_DEPRECATED
display_errors = On
log_errors = On
error_log = /var/log/php_errors.log

Yet, when i view my index.php, which contains the following code, directly from my browser (e.g. myserver.com/index.php), nothing appears but a white-screen:

<?php echo 'Hello php World'; ?>

When executed by php on the command line, I get the expected text output to the terminal ("Hello php World").

When, I add some HTML to index.php as in:

<html>
    <p>Hello from within html</p>
    <?php echo 'Hello php World'; ?>
</html>

and view it with my browser, it returns just "Hello from within html." However, when executed from the command line, I get:

<html>
    <p>Hello from within html</p>
    Hello php World</html>

So, the PHP is parsed and interpreted via the CLI, but not by Apache.

I have confirmed that index.php and its parent file structure are owned by apache:apache and that the selinux context of the apache modules :

chcon -t httpd_sys_script_exec_t  /usr/lib/httpd/modules/*
chcon -t httpd_sys_script_exec_t  /usr/lib/php/modules/*

and of the .php files to be parsed:

chcon -R -h -t httpd_sys_content_t /export1

are correct. I don't think selinux is the problem because I don't get any permission errors, and I've temporarily disabled selinux echo 0 >/selinux/enforce with no resultant success of the php being interpreted by apache.

The php module is being loaded with its configuration and the .php extension is being understood as configured in httpd.conf:

LoadModule php5_module /usr/lib/httpd/modules/libphp5.so
AddType application/x-httpd-php .php .phtml
PHPIniDir /etc/

And, apache knows to look for index.php from:

DirectoryIndex index.html index.html.var index.php

as set in httpd.conf.

I have exhausted my ideas of where my problem is - even tried reinstalling PHP - and sure would appreciate any ideas. In case it's of use, here are the contents of /var/log/httpd/error_log when I start up apache:

[Fri Feb 03 13:44:53 2012] [notice] SELinux policy enabled; httpd running as context unconfined_u:system_r:httpd_t:s0
[Fri Feb 03 13:44:53 2012] [notice] suEXEC mechanism enabled (wrapper: /usr/sbin/suexec)
[Fri Feb 03 13:44:53 2012] [warn] module php5_module is already loaded, skipping
[Fri Feb 03 13:44:53 2012] [notice] Digest: generating secret for digest authentication ...
[Fri Feb 03 13:44:53 2012] [notice] Digest: done
[Fri Feb 03 13:44:54 2012] [warn] mod_wsgi: Compiled for Python/2.6.2.
[Fri Feb 03 13:44:54 2012] [warn] mod_wsgi: Runtime using Python/2.6.6.
[Fri Feb 03 13:44:54 2012] [notice] Apache/2.2.15 (Unix) DAV/2 PHP/5.3.3 mod_ssl/2.2.15 OpenSSL/1.0.0-fips mod_wsgi/3.2 Python/2.6.6 mod_perl/2.0.4 Perl/v5.10.1 configured -- resuming normal operations

Please help!

php apache-2.2 unix php-cli