sysctl

Description

• Verify a linux kernel parameter value is on target
• Live parameter value (sysctl executable)
• Persistent parameter value (/etc/sysctl.conf)

Example rule

{
    "index": 1,
    "value": 256,
    "key": "vm.lowmem_reserve_ratio",
    "op": ">"
}

Form definition

Desc: |
  A rule to set a list of Linux kernel parameters to be set in /etc/sysctl.conf. Current values can be checked as strictly equal, or superior/inferior to their target value. Each field in a vectored value can be tuned independantly using the index key.
Css: comp48

Outputs:
  -
    Dest: compliance variable
    Type: json
    Format: list of dict
    Class: sysctl

Inputs:
  -
    Id: key
    Label: Key
    DisplayModeLabel: key
    LabelCss: action16
    Mandatory: Yes
    Type: string
    Help: The /etc/sysctl.conf parameter to check.

  -
    Id: index
    Label: Index
    DisplayModeLabel: idx
    LabelCss: action16
    Mandatory: Yes
    Default: 0
    Type: integer
    Help: The /etc/sysctl.conf parameter to check.

  -
    Id: op
    Label: Comparison operator
    DisplayModeLabel: op
    LabelCss: action16
    Mandatory: Yes
    Type: string
    Default: "="
    Candidates:
      - "="
      - ">"
      - ">="
      - "<"
      - "<="
    Help: The comparison operator to use to check the parameter current value.

  -
    Id: value
    Label: Value
    DisplayModeLabel: value
    LabelCss: action16
    Mandatory: Yes
    Type: string or integer
    Help: The /etc/sysctl.conf parameter target value.