docs/datacenter/ucp/3.0/guides/interlock/install/offline.md

title	description	keywords
Deploy Interlock offline	Learn about Interlock, an application routing and load balancing system for Docker Swarm.	ucp, interlock, load balancing

To install Interlock on a Docker cluster without internet access the Docker images will need to be loaded. This guide will show how to export the images from a local Docker engine to then be loaded to the Docker Swarm cluster.

First, using an existing Docker engine save the images:

$> docker save docker/interlock:latest > interlock.tar
$> docker save docker/interlock-extension-nginx:latest > interlock-extension-nginx.tar
$> docker save nginx:alpine > nginx.tar

Note: replace docker/interlock-extension-nginx:latest and nginx:alpine with the corresponding extension and proxy image if you are not using Nginx.

You should have two files:

• interlock.tar: This is the core Interlock application
• interlock-extension-nginx.tar: This is the Interlock extension for Nginx
• nginx:alpine: This is the official Nginx image based on Alpine

Copy these files to each node in the Docker Swarm cluster and run the following to load each image:

$> docker load < interlock.tar
$> docker load < interlock-extension-nginx.tar
$> docker load < nginx:alpine.tar

After running on each node, you can continue to the Deployment section to continue the installation.