docs/datacenter/ucp/3.0/guides/interlock/ops/index.md

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

The following describes how to update Interlock. There are two parts to the upgrade. First, the Interlock configuration must be updated to specify the new extension and/or proxy image versions. Then the Interlock service will be updated.

First we will create the new configuration:

$> docker config create service.interlock.conf.v2 <path-to-new-config>

Then you can update the Interlock service to remove the old and use the new:

$> docker service update --config-rm service.interlock.conf interlock
$> docker service update --config-add source=service.interlock.conf.v2,target=/config.toml interlock

Next update the Interlock service to use the new image:

$> docker service update \
    --image interlockpreview/interlock@sha256:d173014908eb09e9a70d8e5ed845469a61f7cbf4032c28fad0ed9af3fc04ef51 \
    interlock

This will update the Interlock core service to use the sha256:d173014908eb09e9a70d8e5ed845469a61f7cbf4032c28fad0ed9af3fc04ef51 version of Interlock. Interlock will start and check the config object which has the new extension version and will perform a rolling deploy to update all extensions.