cannot restore segment prot after reloc message

For 2023 - we are now fully retired from IT training.
We have made many, many friends over 25 years of teaching about Python, Tcl, Perl, PHP, Lua, Java, C and C++ - and MySQL, Linux and Solaris/SunOS too. Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own risk.

Lisa and I (Graham) now live in what was our training centre in Melksham - happy to meet with former delegates here - but do check ahead before coming round. We are far from inactive - rather, enjoying the times that we are retired but still healthy enough in mind and body to be active!

I am also active in many other area and still look after a lot of web sites - you can find an index ((here))

cannot restore segment prot after reloc message - PHP / httpd

Here's a message that we got yesterday when building some of the machines on our Lamp deployment course

[root@easterton apache2]# ./bin/apachectl start

Syntax error on line 233 of /usr/local/apache2/conf/httpd.conf:

Cannot load /usr/local/apache2/modules/libphp5.so into server: /usr/local/apache2/modules/libphp5.so: cannot restore segment 

prot after reloc: Permission denied

[root@easterton apache2]#

This is NOT a syntax error in the httpd.conf file in spite of the error message - but it does (correctly) point to a line number at which it had an issue.

And in this case the issue is ... the security setting for SELinux that was selected at the time the operating system was installed. To get past the problem and allow the PHP Install to complete, we just turned enforcement off ..

[root@easterton apache2]# setenforce 0

[root@easterton apache2]# ./bin/apachectl start

[root@easterton apache2]#

(Note Linux's usual "no news is good news" confirmation that this has worked!)

Extra Note - the setenforce 0 should also be run before you do your make install for PHP ... to prevent the following error:

Installing PEAR environment:      /usr/local/lib/php

/home/graham/haddenham/php-5.2.5/sapi/cli/php: error while loading 

shared libraries: /usr/local/mysql/lib/libmysqlclient.so.16: cannot 

restore segment prot fter reloc: Permission denied

make[1]: *** [install-pear-installer] Error 127

make: *** [install-pear] Error 2

(written 2008-06-26, updated 2008-06-27)

Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles

H114 - Sourcing, installing and configuring PHP
  [192] Current MySQL and PHP paths and upgrades - (2005-01-28)
  [316] Development Environments - (2005-05-19)
  [481] PHP upgrade - traps to watch - (2005-10-31)
  [934] Clustering, load balancing, mod_rewrite and mod_proxy - (2006-11-21)
  [1667] Checking server performance for PHP generated pages - (2008-06-06)
  [1731] Apache httpd, MySQL, PHP - installation procedure - (2008-08-01)
  [1768] What is built in to this httpd and PHP? - (2008-08-23)
  [1936] Quick Summary - PHP installation - (2008-12-12)
  [2317] How to make a Risotto (PHP build style) - (2009-08-02)
  [2433] Controlling, supressing, enabling PHP error messages - (2009-10-02)
  [2589] Your PHP code does not work? Here is where to start looking. - (2010-01-18)
  [2646] Compile but do not run PHP - syntax check only - (2010-02-22)
  [3132] Virtual Hosting with Apache http server - an overall scheme, and avoiding common pitfalls - (2011-01-14)
  [3635] Parse error: parse error, unexpected T_STRING on brand new web site - why? - (2012-03-03)
  [3955] Building up from a small PHP setup to an enterprise one - (2012-12-16)
  [4319] PHP - some quick fixes if scripts have issues, and how to use our support - (2014-11-19)
  [4437] Adding a PHP build option, rotating an image based on camera data, and a new look at thumbnails in PHP - (2015-02-22)

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Some other Articles

Towards Object Oriented Programming in Lua
Co-routines in Lua - co-operative processing
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cannot restore segment prot after reloc message - PHP / httpd
Virtual Hosting on Apache httpd - a primer example
FTP - how not to corrupt data (binary v ascii)
Short circuit evaluation (lazy operator) in Lua
Two PHP include files to make easy web site indexing and navigation
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This is a page archived from The Horse's Mouth at http://www.wellho.net/horse/ - the diary and writings of Graham Ellis. Every attempt was made to provide current information at the time the page was written, but things do move forward in our business - new software releases, price changes, new techniques. Please check back via our main site for current courses, prices, versions, etc - any mention of a price in "The Horse's Mouth" cannot be taken as an offer to supply at that price.

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