Nagios NSclient Failed to get CPU value: 238(_total)6: Failed to get mutex :(

一台Windows Server 2012的nsclient出现以下的错误，表示无法获得CPU信息

2016-08-08 10:31:33: e:........	runkmodulesCheckSystemPDHCollector.cpp:223: Failed to get CPU value: 238(_total)6: Failed to get mutex :(

从而造成大量的报警，在本地执行nrpe，返回的结果如下。

C:Program FilesNSClient++>nscp nrpe -H 127.0.0.1 -c check_server_cpu_load
ERROR: Could not get data for 5m please check log for details

使用sys命令可以得到CPU的信息。

C:Program FilesNSClient++>nscp sys --version
NSClient++, version: 0,4,1,102 2013-07-15, Platform: x64

C:Program FilesNSClient++>nscp sys --validate
Listing configured counters
---------------------------
cpu = 238(_total)6: ok-rate(0)
memory commit bytes = 426: ok(3.88834e+009)
memory commit limit = 430: ok(5.03005e+009)
uptime = 2674: ok(3.54579e+006)
---------------------------
Listed 4 of 4 counters.

解决方案：

1. 首先查看可以获取的所有系统计数值，数量较多，建议先放到文件。

nscp sys --list --all > a.txt

2. 搜索Processor相关信息。

Processor Information(_Total)Performance Limit Flags
Processor Information(_Total)\% Performance Limit
Processor Information(_Total)\% Privileged Utility
Processor Information(_Total)\% Processor Utility
Processor Information(_Total)\% Processor Performance
Processor Information(_Total)Idle Break Events/sec
Processor Information(_Total)Average Idle Time
Processor Information(_Total)Clock Interrupts/sec
Processor Information(_Total)Processor State Flags
Processor Information(_Total)\% of Maximum Frequency
Processor Information(_Total)Processor Frequency
Processor Information(_Total)Parking Status
Processor Information(_Total)\% Priority Time
Processor Information(_Total)C3 Transitions/sec
Processor Information(_Total)C2 Transitions/sec
Processor Information(_Total)C1 Transitions/sec
Processor Information(_Total)\% C3 Time
Processor Information(_Total)\% C2 Time
Processor Information(_Total)\% C1 Time
Processor Information(_Total)\% Idle Time
Processor Information(_Total)DPC Rate
Processor Information(_Total)DPCs Queued/sec
Processor Information(_Total)\% Interrupt Time
Processor Information(_Total)\% DPC Time
Processor Information(_Total)Interrupts/sec
Processor Information(_Total)\% Privileged Time
Processor Information(_Total)\% User Time
Processor Information(_Total)\% Processor Time
Processor Information(0,_Total)Performance Limit Flags
Processor Information(0,_Total)\% Performance Limit
Processor Information(0,_Total)\% Privileged Utility
Processor Information(0,_Total)\% Processor Utility
Processor Information(0,_Total)\% Processor Performance
Processor Information(0,_Total)Idle Break Events/sec
Processor Information(0,_Total)Average Idle Time
Processor Information(0,_Total)Clock Interrupts/sec
Processor Information(0,_Total)Processor State Flags
Processor Information(0,_Total)\% of Maximum Frequency
Processor Information(0,_Total)Processor Frequency
Processor Information(0,_Total)Parking Status
Processor Information(0,_Total)\% Priority Time
Processor Information(0,_Total)C3 Transitions/sec
Processor Information(0,_Total)C2 Transitions/sec
Processor Information(0,_Total)C1 Transitions/sec
Processor Information(0,_Total)\% C3 Time
Processor Information(0,_Total)\% C2 Time
Processor Information(0,_Total)\% C1 Time
Processor Information(0,_Total)\% Idle Time
Processor Information(0,_Total)DPC Rate
Processor Information(0,_Total)DPCs Queued/sec
Processor Information(0,_Total)\% Interrupt Time
Processor Information(0,_Total)\% DPC Time
Processor Information(0,_Total)Interrupts/sec
Processor Information(0,_Total)\% Privileged Time
Processor Information(0,_Total)\% User Time
Processor Information(0,_Total)\% Processor Time
Processor Information(0,15)Performance Limit Flags
Processor Information(0,15)\% Performance Limit
...

3. 在nsclient.ini中指定cpu使用的计数器

[/settings/system/windows/pdh]
cpu=Processor Information(_Total)\% Processor Time

4. 再检测，正常获取CPU信息。

C:Program FilesNSClient++>nscp nrpe -H 127.0.0.1 -c check_server_cpu_load
OK CPU Load ok.|'5m'=1%;90;95