What should I do if php-fpm cannot be started?

Solution to the problem that php-fpm cannot start: 1. Re-download a 64-bit "ZendGuardLoader.so"; 2. Place it under "/usr/local/zend/"; 3. Re-execute Just "lamp php-fpm start".

The operating environment of this article: ubuntu 16.04 system, PHP5.3 version, DELL G3 computer

php-fpm startup What should I do if it doesn’t work? php-fpm failed to start?

Startup error phenomenon: wrong ELF class: ELFCLASS32

##

test@ubuntu:/usr/local/zend$ sudo lnmp php-fpm start
+-------------------------------------------+
| Manager for LNMP, Written by Licess |
+-------------------------------------------+
|  http://lnmp.org          |
+-------------------------------------------+
Starting php-fpm Failed loading /usr/local/zend/ZendGuardLoader.so: /usr/local/zend/ZendGuardLoader.so: wrong ELF class: ELFCLASS32
[03-May-2017 00:03:15] ERROR: FPM initialization failed
failed

This error is because the ZendGuardLoader.so module called by the php-fpm module is a 32-bit module. However, the current system is a 64-bit system, so an error is reported at startup. Re-download a 64-bit ZendGuardLoader.so and put it in / usr/local/zend/, and then re-execute lamp php-fpm start.

The following are the repair steps:

Use the file command to view the file information of the current ZendGuardLoader.so. You can see that the current so file is 32 bit file.

##ZendGuardLoader.so: ELF 32-bit LSB shared object, Intel 80386, version 1 (SYSV), dynamically linked, strippedDownload and unzip the 64-bit ZendGuardLoader, then replace the original .so file and restart php-fpm

##test@ubuntu:/usr/local/zend$ file ZendGuardLoader.so

##wget http://downloads.zend.com/guard/5.5.0/ZendGuardLoader-php-5.3-linux-glibc23 -x86_64.tar.gz##tar -xvf ZendGuardLoader-php-5.3-linux-glibc23-x86_64.tar.gzcp ZendGuardLoader-php-5.3-linux-glibc23-x86_64/php-5.3.x/ZendGuardLoader.so /usr/local/zend / Use file again to look at the replaced ZendGuardLoader.so, and you can see that it is currently a 64-bit file.

##test@ubuntu:/usr/local/zend$ file ZendGuardLoader.so"

ZendGuardLoader.so: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, stripped

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