Upgrading Flex Gateway

You can upgrade Flex Gateway as a Linux service, in a Docker container, or in a Kubernetes cluster.

Upgrade as a Linux Service

Flex Gateway is distributed as a standard package. Use the following steps to upgrade or downgrade Flex Gateway to either a specific version or the latest version.

To upgrade or downgrade Flex Gateway as a Linux Service:

Update the list of available packages:
```
sudo apt update
```
To list the available versions, run:
```
apt list -a flex-gateway
```

Update Flex Gateway:

To the latest version:

sudo apt --only-upgrade -y install flex-gateway

To a specific version:

sudo apt --only-upgrade -y install flex-gateway=<version>

To a downgrade version:

sudo apt --only-upgrade -y --allow-downgrades install flex-gateway=<version>

Restart the services:
```
sudo systemctl restart flex-gateway
```

Upgrade in a Docker Container

The docker containers are not updated, if a new version is needed then a new container with the new image version should be created to replace the outdated one.

The new versions of the images will be available in mulesoft/flex-gateway.

Upgrade in a Kubernetes Cluster

Update charts with the respective chart repositories:
```
helm repo up
```
Upgrade the release to a new version of the Helm chart by executing the following command, replacing example information with your own:
```
helm upgrade -n <namespace> <release_name> flex-gateway/flex-gateway --wait
```