Allows you to either upgrade your domain or perform an Upgrade eligibility check to a compatible Elasticsearch version.
elasticsearchservice_upgrade_elasticsearch_domain(DomainName,
TargetVersion, PerformCheckOnly)
[required]
[required] The version of Elasticsearch that you intend to upgrade the domain to.
This flag, when set to True, indicates that an Upgrade Eligibility Check needs to be performed. This will not actually perform the Upgrade.
svc$upgrade_elasticsearch_domain( DomainName = "string", TargetVersion = "string", PerformCheckOnly = TRUE|FALSE )