kubespray/contrib/offline/README.md

Offline deployment

manage-offline-container-images.sh

Container image collecting script for offline deployment

This script has two features: (1) Get container images from an environment which is deployed online, or set IMAGES_FROM_FILE environment variable to get images from a file (e.g. temp/images.list after running the ./generate_list.sh script). (2) Deploy local container registry and register the container images to the registry.

Step(1) should be done online site as a preparation, then we bring the gotten images to the target offline environment. if images are from a private registry, you need to set PRIVATE_REGISTRY environment variable. Then we will run step(2) for registering the images to local registry, or to an existing registry set by the DESTINATION_REGISTRY environment variable. By default, the local registry will run on port 5000. This can be changed with the REGISTRY_PORT environment variable

Step(1) can be operated with:

manage-offline-container-images.sh   create

Step(2) can be operated with:

manage-offline-container-images.sh   register

generate_list.sh

This script generates the list of downloaded files and the list of container images by roles/kubespray-defaults/defaults/main/download.yml file.

Run this script will execute generate_list.yml playbook in kubespray root directory and generate four files, all downloaded files url in files.list, all container images in images.list, jinja2 templates in *.template.

./generate_list.sh
tree temp
temp
├── files.list
├── files.list.template
├── images.list
└── images.list.template
0 directories, 5 files

In some cases you may want to update some component version, you can declare version variables in ansible inventory file or group_vars, then run ./generate_list.sh -i [inventory_file] to update file.list and images.list.

manage-offline-files.sh

This script will download all files according to temp/files.list and run nginx container to provide offline file download.

Step(1) generate files.list

./generate_list.sh

Step(2) download files and run nginx container

./manage-offline-files.sh

when nginx container is running, it can be accessed through http://127.0.0.1:8080/.