Air-Gapped Install

For environments that are connected to the Internet, one needs access to three repositories to install K10:

The Helm repository that contains the K10 chart
The container registry that contains the K10 container images
Upstream repositories to install K10 dependencies (e.g., Prometheus)

However, if an air-gapped installation is required, it is possible to use your own private container registry to install K10. While this can always be done manually, the k10offline tool makes it easier to automate the process.

Air-Gapped K10 Installation
Preparing K10 Container Images for Air-Gapped Use
Obtaining Older K10 Versions

Air-Gapped K10 Installation 

If the K10 container images are already available in a private repository, the below instructions can be used to install in an air-gapped environment. If needed, support for uploading images to a private image registry is documented below.

Fetching the Helm Chart for Local Use 

To fetch the most recent K10 Helm chart for local use, run the following command to pull the latest K10 chart as a compressed tarball (.tgz) file into the working directory.

$ helm repo update && \
    helm fetch kasten/k10

If you need to fetch a specific version, please run the following command:

$ helm repo update && \
    helm fetch kasten/k10 --version=<k10-version>

Installing K10 with Local Helm Chart and Container Images 

If the K10 container images were uploaded to a registry at repo.example.com, an air-gapped installation can be performed by setting global.airgapped.repository=repo.example.com as shown in the below command:

$ kubectl create namespace kasten-io
$ helm install k10 k10-4.5.1.tgz --namespace kasten-io \
    --set global.airgapped.repository=repo.example.com

If it is required to run Red Hat certified version of upstream container images, this flag can be provided with the helm install command:

--set global.upstreamCertifiedImages=true

Running K10 within a local network 

To run K10 in a network without the ability to connect to the internet, K10 needs to be installed in an air-gapped mode with the helm value metering.mode=airgap as shown in the command below:

$ kubectl create namespace kasten-io
$ helm install k10 k10-4.5.1.tgz --namespace kasten-io \
    --set metering.mode=airgap

Note

If metering.mode=airgap is not set in an offline cluster, some functionality will be disabled. A message warning that K10 is "Unable to validate license" will be displayed in the web based user interface. Errors containing messages "Could not get google bucket for metrics", "License check failed" and "Unable to validate license" will be logged.

If the metering service is unable to connect to the internet for 24 hours, the metering service will restart.

Providing credentials if local container repository is private 

If the local repository that has been provided as the value of global.airgapped.repository is private, credentials for that repository can be provided using secrets.dockerConfig and prometheus.imagePullSecrets[0].name flags, as below, with the helm install command.

--set secrets.dockerConfig=$(base64 -w 0 < ${HOME}/.docker/config.json) \
--set prometheus.imagePullSecrets[0].name="k10-ecr"

Note

Our Helm chart creates a secret with the name k10-ecr with the value that has been provided for secrets.dockerConfig. That's why we are providing secret name k10-ecr as value of prometheus.imagePullSecrets[0].name.

Preparing K10 Container Images for Air-Gapped Use 

There are multiple ways to use a private repository including setting up a caching or proxy image registry that points to the Kasten K10 image repositories using tools such as JFrog Artifactory. However, if images need to be manually uploaded or an automated upload pipeline is required to add K10 images into your private repository, the following documentation should help.

List K10 Container Images 

The following command will list all images used by the current K10 version, This can be helpful if there is a requirement to tag and push K10 images into your private repository manually instead of using the Kasten provided tool documented below.

$ docker run --rm -it gcr.io/kasten-images/k10offline:4.5.1 list-images

Local Pull of all K10 Container Images 

The following command will execute the k10offline tool and use docker-in-docker (via docker.sock) to download all K10 images into the local machine's registry.

$ docker run --rm -it -v /var/run/docker.sock:/var/run/docker.sock \
    gcr.io/kasten-images/k10offline:4.5.1 pull images

Move K10 Images Into a Private Repository 

Finally, to completely automate the download and re-upload of K10 container images, the following command will pull all K10 images into your local repository, re-tag them for a repository located at repo.example.com and push them to this specified registry. Note that this tool will use your local docker config if the private registry requires authentication.

Note

K10 uses a few upstream container images. To avoid a possible collision with a customer's private version, the k10offline tool adds the k10- prefix to these container images tags.

$ docker run --rm -ti -v /var/run/docker.sock:/var/run/docker.sock \
    -v ${HOME}/.docker:/root/.docker \
    gcr.io/kasten-images/k10offline:4.5.1 pull images --newrepo repo.example.com

Note

After running the previous command, use the instructions above to install K10 via images uploaded to repo.example.com.

Obtaining Older K10 Versions 

The above commands operate against the latest version of K10 (4.5.1). If you want an older version, you can execute the following to discover older available version number (listed under the CHART VERSION column) and the replace the version listed in all the below commands.

$ helm repo update && \
    helm search repo kasten/k10 --versions