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Could someone please tell me why I am getting following error?

OMD[site-name]:~/etc/nagios/conf.d$ check_mk -O

Traceback (most recent call last):
  File "/omd/sites/site-name/share/check_mk/modules/", line 4560, in <module>
  File "/omd/sites/site-name/share/check_mk/modules/", line 4358, in read_config_files
  File "/omd/sites/site-name/share/check_mk/modules/", line 4507, in read_all_autochecks
    for (host, ct, it, par) in autochecks ]
  File "/omd/sites/site-name/share/check_mk/modules/", line 4416, in compute_check_parameters
    def_levels_varname = check_info[checktype].get("default_levels_variable")
KeyError: 'linux.version'
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Thank You Khaled – meMangesh Jan 8 '13 at 12:15
up vote 0 down vote accepted

Since this occurs in check_info it would seem you have installed a custom check plugin which is broken.

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