cfn-lint(1)

1CFN-LINT(1)                      User Commands                     CFN-LINT(1)
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NAME

6       cfn-lint – CloudFormation Linter
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SYNOPSIS

9       cfn-lint [OPTION...]  [TEMPLATE]
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OPTIONS

12       -h, --help
13              Show a help message and exit
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15   STANDARD
16       TEMPLATE
17              The CloudFormation template to be linted
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19       -t TEMPLATE [TEMPLATE ...], --template TEMPLATE [TEMPLATE ...]
20              The CloudFormation template to be linted
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22       -b, --ignore-bad-template
23              Ignore failures with Bad template
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25       --ignore-templates IGNORE_TEMPLATES [IGNORE_TEMPLATES ...]
26              Ignore templates
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28       -f {quiet,parseable,json,junit,pretty,sarif},                    --for‐
29       mat {quiet,parseable,json,junit,pretty,sarif}
30              Output Format
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32       -l, --list-rules
33              list all the rules
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35       -r REGIONS [REGIONS ...], --regions REGIONS [REGIONS ...]
36              list the regions to validate against.
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38       -i IGNORE_CHECKS [IGNORE_CHECKS ...],               --ignore-checks IG‐
39       NORE_CHECKS [IGNORE_CHECKS ...]
40              only check rules whose id do not match these values
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42       -c INCLUDE_CHECKS [INCLUDE_CHECKS ...],            --include-checks IN‐
43       CLUDE_CHECKS [INCLUDE_CHECKS ...]
44              include rules whose id match these values
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46       -m MANDATORY_CHECKS [MANDATORY_CHECKS ...],   --mandatory-checks MANDA‐
47       TORY_CHECKS [MANDATORY_CHECKS ...]
48              always  check  rules  whose id match these values, regardless of
49              template exclusions
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51       -e, --include-experimental
52              Include experimental rules
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54       -x CONFIGURE_RULES [CONFIGURE_RULES ...],      --configure-rule CONFIG‐
55       URE_RULES [CONFIGURE_RULES ...]
56              Provide configuration for a rule.  Format RuleId:key=value.
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58              Example:
59                     E3012:strict=true
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61       --config-file CONFIG_FILE
62              Specify the cfnlintrc file to use
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64       -z CUSTOM_RULES, --custom-rules CUSTOM_RULES
65              Allows specification of a custom rule file.
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67       -v, --version
68              Version of cfn-lint(1)
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70       --output-file OUTPUT_FILE
71              Writes the output to the specified file, ideal for producing re‐
72              ports
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74       --merge-configs
75              Merges lists between configuration layers
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77   ADVANCED / DEBUGGING
78       -D, --debug
79              Enable debug logging
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81       -I, --info
82              Enable information logging
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84       -a APPEND_RULES [APPEND_RULES ...],    --append-rules APPEND_RULES [AP‐
85       PEND_RULES ...]
86              specify  one  or  more rules directories using one or more --ap‐
87              pend-rules arguments.
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89       -o OVERRIDE_SPEC, --override-spec OVERRIDE_SPEC
90              A CloudFormation Spec override file that allows customization
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92       -g, --build-graph
93              Creates a file in the same directory as the template that models
94              the template’s resources in dot(1) format
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96       -s REGISTRY_SCHEMAS [REGISTRY_SCHEMAS ...],     --registry-schemas REG‐
97       ISTRY_SCHEMAS [REGISTRY_SCHEMAS ...]
98              one or more directories of CloudFormation Registry Schemas
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100       -u, --update-specs
101              Update the CloudFormation Specs
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EXAMPLES

104       Basic:
105              cfn-lint test.yaml
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107       Ignore a rule:
108              cfn-lint -i E3012 -- test.yaml
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110       Configure a rule:
111              cfn-lint -x E3012:strict=false -t test.yaml
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113       Lint all yaml files in a folder:
114              cfn-lint dir/**/*.yaml
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NAME

SYNOPSIS

OPTIONS

EXAMPLES

SEE ALSO