[FEATURE_REQUEST] Allow excluding 3rd party Helm charts check

[vzabawski]

Description of the problem/feature request
I have a Helm chart "my-app" which contains some resources. This chart uses several 3rd party charts as a dependency. When I'm verifying my chart, all errors are related to 3rd party charts which I can't fix.

Description of the existing behavior vs. expected behavior
It would be nice if ignorePaths supported Helm charts or if there was some other way to exclude 3rd party charts from the validation. Right now the workaround for me is to cleanup charts dir in my Helm chart. In that case, kube-linter doesn't pick up 3rd party charts due to their absence and does not validate.

Here's my chart structure:

helm-charts/cumulus-monitoring
├── Chart.lock
├── Chart.yaml
├── README.md
├── charts
│   ├── influxdb-4.12.0.tgz
│   ├── ingress-nginx-4.1.4.tgz
│   ├── kube-prometheus-stack-41.5.1.tgz
│   └── splunk-connect-for-kubernetes-1.4.15.tgz
├── templates
│   ├── clusterrole.yaml
│   ├── secret.yaml
│   └── tls-secrets.yaml
└── values.yaml

[janisz]

refs: #353

[janisz]

Fixed by: #515

[vzabawski]

Hi @janisz. I'm still reproducing this issue with kube-linter 0.6.3.
I've tried config file and the command, but nothing seems to be working.

kube-linter lint --ignore-paths "charts/influxdb-*.tgz" .
kube-linter lint --ignore-paths "charts/influxdb/**" .

[janisz]

@vzabawski charts are loaded differently. I'm not sure how is your project structured but let's take kube-linter test dir (test/testdata) as an example.

tests/testdata
├── mychart
│   ├── Chart.yaml
│   ├── templates
│   │   ├── deployment.yaml
│   │   ├── _helpers.tpl
│   │   ├── hpa.yaml
│   │   ├── ingress.yaml
│   │   ├── NOTES.txt
│   │   ├── serviceaccount.yaml
│   │   ├── service.yaml
│   │   └── tests
│   │       └── test-connection.yaml
│   └── values.yaml
├── mychart-0.1.0.tgz
└── splunk.yaml

Following command will not scan anything:

kube-linter lint \
    --ignore-paths '**/*.yaml' \     
    --ignore-paths '**/*.tgz' \        
    --ignore-paths '**/mychart' \  
    tests/testdata

• --ignore-paths '**/*.yaml' – filters only splunk.yaml
• --ignore-paths '**/*.tgz' – filters only mychart-0.1.0.tgz
• --ignore-paths '**/mychart' – filters only mychart dir that is not filtered by previous yaml filter as it's detected as a helm dir and included as a whole without fine grained filtering it's content.

Could you share your dir structure?