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Description

The file_check probe checks a file on the filesystem: existence, size, and age (modification time).

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Config fields

FieldTypeRequiredDefaultDescription
typestringYes—Must be "file_check"
filePathstringYes—File path to check
mustExistboolNotruetrue: file must exist → absent = down. false: absent file is up
minSizeBytesint64No—Minimum file size (bytes)
maxSizeBytesint64No—Maximum file size (bytes)
maxAgeSecondsint64No—Maximum file age (seconds since last modification)

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Metrics

MetricTypeDescription
vms.file_check.statusstatusup or down

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Example config

{
  "type": "file_check",
  "filePath": "/var/log/app/app.log",
  "mustExist": true,
  "maxAgeSeconds": 600
}