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Steve Richards
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updated Layer 7 UI image to have correct http port, updated deployment steps to make it clear what can be done via the UI and the alternative manualy approach
Signed-off-by: Steve Richards <[email protected]>
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‎ee/ucp/images/interlock-install-4.png‎

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‎ee/ucp/interlock/deploy/index.md‎

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This topic covers deploying a layer 7 routing solution into a Docker Swarm to route traffic to Swarm services. Layer 7 routing is also referred to as an HTTP routing mesh.
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1. [Prerequisites](#prerequisites)
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2. [Enable layer 7 routing](#enable-layer-7-routing)
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3. [Work with the core service configuration file](#work-with-the-core-service-configuration-file)
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4. [Create a dedicated network for Interlock and extensions](#create-a-dedicated-network-for-Interlock-and-extensions)
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5. [Create the Interlock service](#create-the-interlock-service)
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- [Prerequisites](#prerequisites)
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- [Enable layer 7 routing via UCP](#enable-layer-7-routing-via-ucp)
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- [Enable layer 7 routing manually](#enable-layer-7-routing-manually)
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- [Work with the core service configuration file](#work-with-the-core-service-configuration-file)
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- [Create a dedicated network for Interlock and extensions](#create-a-dedicated-network-for-interlock-and-extensions)
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- [Create the Interlock service](#create-the-interlock-service)
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- [Next steps](#next-steps)
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## Prerequisites
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- [Docker](https://www.docker.com) version 17.06 or later
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- Docker must be running in [Swarm mode](/engine/swarm/)
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- Internet access (see [Offline installation](./offline-install.md) for installing without internet access)
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## Enable layer 7 routing
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## Enable layer 7 routing via UCP
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By default, layer 7 routing is disabled, so you must first
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enable this service from the UCP web UI.
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1. Log in to the UCP web UI as an administrator.
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2. Navigate to **Admin Settings**
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3. Select **Layer 7 Routing** and then select **Enable Layer 7 Routing**
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![http routing mesh](../../images/interlock-install-3.png){: .with-border}
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![http routing mesh](../../images/interlock-install-4.png){: .with-border}
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By default, the routing mesh service listens on port 8080 for HTTP and port
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8443 for HTTPS. Change the ports if you already have services that are using
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At this point everything is ready for you to start using the layer 7 routing
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service with your swarm workloads.
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The following code sample provides a default UCP configuration:
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The following code sample provides a default UCP configuration (this will be created automatically when enabling Interlock as per section [Enable layer 7 routing](#enable-layer-7-routing)):
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```toml
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ListenAddr = ":8080"
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ProxyStopGracePeriod = "5s"
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ProxyConstraints = ["node.labels.com.docker.ucp.orchestrator.swarm==true", "node.platform.os==linux"]
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PublishMode = "ingress"
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PublishedPort = 80
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PublishedPort = 8080
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TargetPort = 80
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PublishedSSLPort = 8443
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TargetSSLPort = 443
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HideInfoHeaders = false
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```
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## Enable layer 7 routing manually
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Interlock can also be enabled from the command line by following the below setions.
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### Work with the core service configuration file
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Interlock uses the TOML file for the core service configuration. The following example utilizes Swarm deployment and recovery features by creating a Docker Config object:
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```bash
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ProxyStopGracePeriod = "3s"
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ServiceCluster = ""
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PublishMode = "ingress"
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PublishedPort = 80
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PublishedPort = 8080
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TargetPort = 80
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PublishedSSLPort = 443
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PublishedSSLPort = 8443
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TargetSSLPort = 443
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[Extensions.default.Config]
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User = "nginx"
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```
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### Create the Interlock service
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Now you can create the Interlock service. Note the requirement to constrain to a manager. The
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Interlock core service must have access to a Swarm manager, however the extension and proxy services
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are recommended to run on workers. See the [Production](./production.md) section for more information

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