OCS inventory | agent 运行问题 | 系统日志 | exit code is 4 | error 500_ocs inventory agent

以下错误是服务端数据库用户权限不够导致的，请参考官方文档

官方提示：

Error 500:

Solution: OCS engine can’t comunicate with mysql server. Probably due to a wrong mysql account. You have to check z-ocsinventory-server.conf exactly theses few lines

错误信息如下

Service encounter error <OCS Inventory NG Agent encounter an error (exit code is 4 => Failed to talk with Communication Server)>.

Failed to send Prolog <HTTP Status Code #500>
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• 开始菜单右键选择事件查看器
  

• 点开Windows日志-应用程序可以看到
  存在一个错误 Failed to load/parse last inventory state
  右下角OCS图标右键点击run OCS inventory NG Agent now
  虽然显示successfully，但是并没有收集到这个错误。
  日志中多出来一个错误Service encounter error <OCS Inventory NG Agent encounter an error (exit code is 4 => Failed to talk with Communication Server)>.

查看OCSInventory.log，错误信息如下：

Starting OCS Inventory NG Agent on Tuesday, October 08, 2019 21:16:40.
AGENT => Running OCS Inventory NG Agent Version 2.6.0.0
AGENT => Using OCS Inventory NG FrameWork Version 2.6.0.0
AGENT => Loading plug-in(s)
AGENT => Using network connection with Communication Server
AGENT => Using Communication Provider <OCS Inventory NG cURL Communication Provider> Version <2.6.0.0>
AGENT => Sending Prolog
ERROR *** AGENT => Failed to send Prolog <HTTP Status Code #500>
AGENT => Unloading communication provider
AGENT => Unloading plug-in(s)
AGENT => Execution duration: 00:00:00.
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