Error converting YAML to JSON

JupyterHub Zero to JupyterHub on Kubernetes
1

Hi, Following the instruction of Jupyterhub for Kubenetes, I want to enable https on our jupyterhub. So I create myconfig.yaml:

proxy:
  https:
    enabled: true
    type: manual
    manual:
      key: |
        -----BEGIN RSA PRIVATE KEY-----
        ....here is the content from our private key file.
        -----END RSA PRIVATE KEY-----
      cert: |
        -----BEGIN CERTIFICATE-----
        ....here is the content from our cert file.
        -----END CERTIFICATE-----

When I run microk8s helm3 upgrade, I got error:

Error: failed to parse myconfig.yaml: error converting YAML to JSON: yaml: line 9: could not find expected ‘:’
helm.go:84: [debug] error converting YAML to JSON: yaml: line 9: could not find expected ‘:’
failed to parse myconfig.yaml
helm.sh/helm/v3/pkg/cli/values.(*Options).MergeValues
helm.sh/helm/v3/pkg/cli/values/options.go:54
main.newUpgradeCmd.func2
helm.sh/helm/v3/cmd/helm/upgrade.go:142
github.com/spf13/cobra.(*Command).execute
github.com/spf13/cobra@v1.4.0/command.go:856
github.com/spf13/cobra.(*Command).ExecuteC
github.com/spf13/cobra@v1.4.0/command.go:974
github.com/spf13/cobra.(*Command).Execute
github.com/spf13/cobra@v1.4.0/command.go:902
main.main
helm.sh/helm/v3/cmd/helm/helm.go:83
runtime.main
runtime/proc.go:250
runtime.goexit
runtime/asm_amd64.s:1598

The line 9 in myconfig.yaml is content of the private key. So I am confused where is the problem?

2

hard to say without the exact yaml (redacted and rightfully so), but this suggests to me an indentation problem. Make sure the hanging indent for the key/cert are right and there’s no mixing tabs and spaces.

You can try also loading your file locally with a yaml parser to check:

import yaml
with open("myconfig.yaml") as f:
    yaml.safe_load(f)
1 Like
3

Thanks. It is the indentation problem which happens when I input the private key and cert. It works now.