Preparing for the upgrade

General prerequisites

Before you upgrade to 2021.3, please make sure:

you are running Axual version 2021.2. Use axual.sh status to check the current version.
you are performing the deployment with Axual CLI 2021.3

Below you will find specific prerequisites for services that are upgraded or introduced in release 2021.3.

Unset overridden versions

For every component upgrade step, make sure you have not overridden the version of the component, which you might have done as a result or a security update or patch release upgrade. Find below a list of all the platform components and the name of the file where the versions are specified. Make sure all versions are commented out, to make sure the Axual CLI upgrade takes care of starting the right version for the 2021.3 release.

Table 1. Component version file names
Component	File names	Configuration variable
Broker	`platform-config/clusters/{cluster-name}/broker.sh`	`BROKER_VERSION`
Cluster API	`platform-config/clusters/{cluster-name}/cluster-api.sh`	`CLUSTER_API_VERSION`
Cluster Browse	`platform-config/clusters/{cluster-name}/cluster-browse.sh`	`CLUSTER_BROWSE_VERSION`
Axual Connect	`platform-config/tenants/{tenant-name}/instances/{instance-name}/connect.sh`	`AXUAL_CONNECT_VERSION`
Discovery API	`platform-config/tenants/{tenant-name}/instances/{instance-name}/disccovery-api.sh`	`DISCOVERYAPI_VERSION`
Exhibitor	`platform-config/clusters/{cluster-name}/exhibitor.sh`	`EXHIBITOR_VERSION`
Instance API	`platform-config/tenants/{tenant-name}/instances/{instance-name}/instance-api.sh`	`INSTANCEAPI_VERSION`
Platform Metric Provider	`platform-config/clusters/{cluster-name}/platform-metric-provider.sh`	`METRIC_PROVIDER_VERSION`
REST Proxy	`platform-config/tenants/{tenant-name}/instances/{instance-name}/rest-proxy.sh`	`RESTPROXY_VERSION`
Stream Browse	`platform-config/clusters/{cluster-name}/stream-browse.sh`	`STREAM_BROWSE_VERSION`
Management API	`platform-config/clusters/{cluster-name}/mgmt-api.sh`	`MGMT_API_VERSION`
Management UI	`platform-config/clusters/{cluster-name}/mgmt-ui.sh`	`MGMT_UI_VERSION`
Operation Manager	`platform-config/clusters/{cluster-name}/operation-manager.sh`	`OPERATION_MANAGER_VERSION`
Schema Registry (master & slave)	`platform-config/tenants/{tenant-name}/instances/{instance-name}/schemaregistry.sh`	`SCHEMAREGISTRY_VERSION`

Next step: Performing the upgrade

This concludes the preparation for the 2021.3 upgrade. You may now continue Performing the Upgrade.