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Tuesday, August 12, 2014

Cacti Variables- PHP SNMP Support: no, PHP SNMP Not Installed

Problem:
When i load my cacti "about.php" page, at the bottom, under Cacti Variables, i see:
PHP SNMP Supportno

And also clicking on the "System Utilities > Technical Support" Page, under PHP Information, i see:
PHP SNMP                                                                                                       Not Installed

The problem was i didn't have the php-snmp packages installed on my server!
# rpm -qa | grep php
php55w-5.5.15-1.w6.x86_64
php55w-cli-5.5.15-1.w6.x86_64
php55w-pdo-5.5.15-1.w6.x86_64
php55w-common-5.5.15-1.w6.x86_64
php55w-mysql-5.5.15-1.w6.x86_64

Solution:
1. Find the php-snmp package that matches your php version and install it:

# yum install http://repo.webtatic.com/yum/el6-testing/x86_64/php55w-snmp-5.5.15-1.w6.x86_64.rpm
Loaded plugins: product-id, replace, security, subscription-manager
Updating certificate-based repositories.
Setting up Install Process
php55w-snmp-5.5.15-1.w6.x86_64.rpm                                                                                                                                                                        |  30 kB     00:00     
Examining /var/tmp/yum-root-M9Lg4I/php55w-snmp-5.5.15-1.w6.x86_64.rpm: php55w-snmp-5.5.15-1.w6.x86_64
Marking /var/tmp/yum-root-M9Lg4I/php55w-snmp-5.5.15-1.w6.x86_64.rpm to be installed
Resolving Dependencies
--> Running transaction check
---> Package php55w-snmp.x86_64 0:5.5.15-1.w6 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

=========================================================================================================
 Package                                           Arch                                         Version                                              Repository                                                             Size
==========================================================================================================
Installing:
 php55w-snmp                                       x86_64                                       5.5.15-1.w6                                          /php55w-snmp-5.5.15-1.w6.x86_64                                       107 k

Transaction Summary
===========================================================================================================
Install       1 Package(s)

Total size: 107 k
Installed size: 107 k
Is this ok [y/N]: y
Downloading Packages:
Running rpm_check_debug
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Installing : php55w-snmp-5.5.15-1.w6.x86_64                                                                                            
Installed products updated.
Installed:
php55w-snmp.x86_64 0:5.5.15-1.w6                                                                                                                                                                                               
Complete!
#
# rpm -qa | grep php
php55w-5.5.15-1.w6.x86_64
php55w-cli-5.5.15-1.w6.x86_64
php55w-pdo-5.5.15-1.w6.x86_64
php55w-snmp-5.5.15-1.w6.x86_64
php55w-common-5.5.15-1.w6.x86_64

php55w-mysql-5.5.15-1.w6.x86_64

2. Restart Appache:

# /etc/init.d/httpd start
                                                          [  OK  ]
3. Test Again, should look like below:

PHP SNMP Installed
PHP SNMP Support: yes
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