If you encounter the 'Time synchronization failed during discovery' error using the perl Net::SNMP library there may be a fairly easy work around. It may be as easy as editing the Net::SNMP module to not invoke this error. The following advice should be executed as root.
Find Net::SNMP
In order to find where Net::SNMP is on the subject system issue the following command.
| Code Block |
|---|
# find /usr/ -type f -path "*/Net/SNMP.pm" /usr/local/share/perl5/Net/SNMP.pm /usr/share/perl5/Net/SNMP.pm |
If you are unfortunate as in the above example two SNMP.pm files may be returned. In order to determine which one perl is invoking use the perl -V command.
| Code Block |
|---|
# perl -V | grep -A 30 @INC
@INC:
/usr/local/lib64/perl5
/usr/local/share/perl5
/usr/lib64/perl5/vendor_perl
/usr/share/perl5/vendor_perl
/usr/lib64/perl5
/usr/share/perl5
.
# |
The @INC array is a list of directories that perl looks in to find modules. This is a top down, match first find operation. Based on this the version in /usr/local/share/perl5/Net will be utilized because it will be found first.
Edit Net::SNMP
Always make a backup of a module prior to editing it. A command such as 'cp SNMP.pm SNMP.pm.unpatched works well.