The best one!

Thanks for the plugin, this is the best one!

Here are two remarks:
1. It doesn’t work for Windows and ESXi as they don’t provide zone information by SNMP.
2. Timeout should be changed from 60 seconds and 5 retries to 30 second and single retry in order not to get CRITICAL instead of WARNING:

— snmp_remote_time_utc.orig 2014-11-14 11:56:09.000000000 +0100
+++ snmp_remote_time_utc 2014-11-14 15:01:55.360771200 +0100
@@ -53,7 +53,7 @@

getandprintresults() {
# Get local and remote time at the same time, so we can do a diff later. Local in utc.
– rdatestring=$( snmpget -v $version -t 60 -c $community $host HOST-RESOURCES-MIB::hrSystemDate.0 2> /dev/null | gawk ‘{print $NF}’ )
+ rdatestring=$( snmpget -v $version -t 30 -r 1 -c $community $host HOST-RESOURCES-MIB::hrSystemDate.0 2> /dev/null | gawk ‘{print $NF}’ )
ldate=$(date -u)

[ ! “$rdatestring” ] && exit_unknown