Allowed configurations

Couchbase server option	Environment variable	PDS default value
--services	COUCHBASE_SERVICES	data, index, query, fts
--cluster-ramsize	COUCHBASE_RAMSIZE	2048
--cluster-index-ramsize	COUCHBASE_INDEX_RAMSIZE	512
--cluster-fts-ramsize	COUCHBASE_FTS_RAMSIZE	512
--index-storage-setting	COUCHBASE_INDEX_STORAGE_SETTING	default
--enable-auto-failover	COUCHBASE_ENABLE_AUTO_FAILOVER	1
--auto-failover-timeout	COUCHBASE_AUTO_FAILOVER_TIMEOUT	180