kube-configmap-exporter

Kubernetes ConfigMap Exporter

Usage

Usage: kube-configmap-exporter <name> -t <dir> options
Options:
  <name>                   ConfigMap name to export
  -n, --namespace <name>   Namespace ('default' by default)
  -t, --to <dir>           Directory onto which each configmap data is stored
                           as a file named each configmap key
  -h, --help               Show this message
  -v, --version            Show this command's version
Example:
  # Export configmap "mycm" in namespace "myns" onto directory "/tmp/"
  kube-configmap-exporter mycm -n myns -t /tmp

Prerequisite

• kubectl - kube-configmap-exporter uses kubectl to access Kubernetes API to import or to export ConfigMap
• jq - kube-configmap-exporter uses jq in exporting ConfigMap

Installation

sudo git clone https://github.com/yokawasa/kube-configmap-exporter /opt/kube-configmap-exporter
sudo ln -s /opt/kube-configmap-exporter/kube-configmap-exporter /usr/local/bin/kube-configmap-exporter

Quickstart

Get copy of kube-configmap-exporter

$ git clone https://github.com/yokawasa/kube-configmap-exporter
cd kube-configmap-exporter

You have the following test files under tests/files directry:

$ tree tests/files
tests/files
├── database.yml
├── nginx.conf
└── uwsgi.ini

Now you create ConfigMap named mycm and import these files above into it by using kubectl.

$ kubectl create configmap mycm --from-file tests/files

Then, check how these config files are imported into the ConfigMap mycm.

$ kubectl get cm my-config -o json
{
    "apiVersion": "v1",
    "data": {
        "database.yml": "....",
        "nginx.conf": "....",
        "uwsgi.ini": "...."
    },
    "kind": "ConfigMap",
    "metadata": {
        "creationTimestamp": "2018-11-15T14:52:00Z",
        "name": "mycm",
        "namespace": "default",
        "resourceVersion": "2843317",
        "selfLink": "/api/v1/namespaces/default/configmaps/mycm",
        "uid": "01a14c9b-e8e6-11e8-b8ca-166cb263b9b6"
    }
}

Finally, you export ConfigMap mycm onto a directory named tests/exports using kube-configmap-exporter

$ mkdir tests/exports
$ kube-configmap-exporter mycm -t tests/exports

Let’s check exported files in tests/exports directory.

$ tree tests/exports
exports
├── database.yml
├── nginx.conf
└── uwsgi.ini

License

This project is Apache Licensed

Contributing

Bug reports, pull requests, and any feedback are welcome on GitHub at https://github.com/yokawasa/kube-configmap-exporter.