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  4. Configure Replicas

Configuring Replicas for Flex Gateway in Connected Mode

Flex Replicas

A Flex Replica is an instance of Flex Gateway. Setting up your gateway layer with multiple Flex Gateway replicas enables the APIs deployed on Flex Gateway to serve more traffic.

When using Flex Gateway to manage APIs in production, configure more than one Flex Replica to avoid a single point of failure. Running multiple Flex Replicas also increases performance if your API service receives a significant amount of traffic.

Before You Begin

Before getting started, ensure you have completed the following tasks:

Add a Flex Replica as a Linux Service

Adding a Flex Replica as a Linux Service includes the following tasks:

  • Copy and paste the registration file created during registration to your Linux machine or VM.

  • Run the Flex Gateway start command.

Copy the Registration File

Copy the registration.yaml file to the following location on your Linux machine or VM:

  • /usr/local/share/mulesoft/flex-gateway/conf.d

Start Commands

Start Flex Gateway with the following command:

sudo systemctl start flex-gateway

Verify that the Flex Gateway service is running successfully:

systemctl list-units flex-gateway*

If flex-gateway.service has a status of active, Flex Gateway is successfully running.

  UNIT                              LOAD   ACTIVE SUB     DESCRIPTION
  flex-gateway.service              loaded active running Application

Now if you check in Runtime Manager after clicking Flex Gateway in the left navigation, your Flex Gateway will have an additional replica listed. You may need to refresh the page.

Add a Flex Replica in a Docker Container

To add a Flex Replica in a Docker Container you must run the Flex Gateway start command using the same registration.yaml file created during registration. If you are running the container locally, you will also need to use a different port.

Start Command

Run the following start command in the same directory where you ran the registration command:

docker run --rm \
-v "$(pwd)":/usr/local/share/mulesoft/flex-gateway/conf.d \
-p 8080:8080 \
mulesoft/flex-gateway
Specify an optional name you want to assign to your Flex Replica by including the following: -e FLEX_NAME=<name-for-flex-replica> \.

Now if you check in Runtime Manager after clicking Flex Gateway in the left navigation, your Flex Gateway will have an additional replica listed. You may need to refresh the page.