I was trying to use Percona Zabbix monitoring plugin (http://www.percona.com/doc/percona-monitoring-plugins/1.1/zabbix/index.html) to monitor our mySQL servers.

On the step of importing template, that comes with it, Zabbix spits hundreds of lines like:

Undefined index: valuemap [conf.import.php:130 ? CConfigurationImport->import() ? CConfigurationImport->processItems() in /usr/share/zabbix/include/classes/import/CConfigurationImport.php:589]
Undefined index: valuemap [conf.import.php:130 ? CConfigurationImport->import() ? CConfigurationImport->processItems() in /usr/share/zabbix/include/classes/import/CConfigurationImport.php:589]
Undefined index: valuemap [conf.import.php:130 ? CConfigurationImport->import() ? CConfigurationImport->processItems() in /usr/share/zabbix/include/classes/import/CConfigurationImport.php:589]
Undefined index: valuemap [conf.import.php:130 ? CConfigurationImport->import() ? CConfigurationImport->processItems() in /usr/share/zabbix/include/classes/import/CConfigurationImport.php:589]
Undefined index: valuemap [conf.import.php:130 ? CConfigurationImport->import() ? CConfigurationImport->processItems() in /usr/share/zabbix/include/classes/import/CConfigurationImport.php:589]
Undefined index: valuemap [conf.import.php:130 ? CConfigurationImport->import() ? CConfigurationImport->processItems() in /usr/share/zabbix/include/classes/import/CConfigurationImport.php:589]
Undefined index: valuemap [conf.import.php:130 ? CConfigurationImport->import() ? CConfigurationImport->processItems() in /usr/share/zabbix/include/classes/import/CConfigurationImport.php:589]
Undefined index: valuemap [conf.import.php:130 ? CConfigurationImport->import() ? CConfigurationImport->processItems() in /usr/share/zabbix/include/classes/import/CConfigurationImport.php:589]
Undefined index: valuemap [conf.import.php:130 ? CConfigurationImport->import() ? CConfigurationImport->processItems() in /usr/share/zabbix/include/classes/import/CConfigurationImport.php:589]
Undefined index: valuemap [conf.import.php:130 ? CConfigurationImport->import() ? CConfigurationImport->processItems() in /usr/share/zabbix/include/classes/import/CConfigurationImport.php:589]
Undefined index: valuemap [conf.import.php:130 ? CConfigurationImport->import() ? CConfigurationImport->processItems() in /usr/share/zabbix/include/classes/import/CConfigurationImport.php:589]
Undefined index: valuemap [conf.import.php:130 ? CConfigurationImport->import() ? CConfigurationImport->processItems() in /usr/share/zabbix/include/classes/import/CConfigurationImport.php:589]
Undefined index: valuemap [conf.import.php:130 ? CConfigurationImport->import() ? CConfigurationImport->processItems() in /usr/share/zabbix/include/classes/import/CConfigurationImport.php:589]
Updated: Item "Key Write Requests" on "Percona MySQL Server Template".
Updated: Item "Key Writes" on "Percona MySQL Server Template".
Updated: Item "Key Read Requests" on "Percona MySQL Server Template".
Updated: Item "Key Reads" on "Percona MySQL Server Template".
Updated: Item "Key Buf Bytes Unflushed" on "Percona MySQL Server Template".
...

Updated: Item "Pool Reads" on "Percona MySQL Server Template".
Updated: Item "Total number of mysqld processes" on "Percona MySQL Server Template".
Updated: Item "MySQL running slave" on "Percona MySQL Server Template".
Updated: Trigger "MySQL is down on

{HOST.NAME}" on "Percona MySQL Server Template".
Updated: Trigger "MySQL connections utilization more than 80% on {HOST.NAME}

" on "Percona MySQL Server Template".
Updated: Trigger "MySQL connections utilization more than 95% on

{HOST.NAME}" on "Percona MySQL Server Template".
Updated: Trigger "MySQL active threads more than 40 on {HOST.NAME}

" on "Percona MySQL Server Template".
Updated: Trigger "MySQL active threads more than 100 on

{HOST.NAME}" on "Percona MySQL Server Template".
Updated: Trigger "MySQL slave lag more than 300 on {HOST.NAME}

" on "Percona MySQL Server Template".
Updated: Trigger "MySQL slave lag more than 600 on

{HOST.NAME}" on "Percona MySQL Server Template".
Updated: Trigger "Slave is stopped on {HOST.NAME}

" on "Percona MySQL Server Template".

Template, seems, imported successfully, but those warnings look suspicious.

Looking through the template I don't see any mapped values(but I could be wrong and missing them).

With Zabbix 2.0 I didn't see messages like this on this template(I've re-installed Zabbix from scratch, thats why needed to re-import certain templates).