Struct[{
# the following parameters are injected by the main opensearch class
'cluster_name' => Optional[String],
'http_port' => Optional[Stdlib::Port],
'transport_tcp_port' => Optional[Stdlib::Port],
# the following parameters need specific default values for single instance
'node_name' => Optional[String],
# the following parameters have defaults that are sane both for single
# and multi-instances
'heap_memory' => Optional[String],
'plugins_dir' => Optional[Stdlib::Absolutepath],
'plugins_mandatory' => Optional[Array[String]],
'minimum_master_nodes' => Optional[Integer],
'holds_data' => Optional[Boolean],
'auto_create_index' => Optional[Variant[Boolean, String]],
'expected_nodes' => Optional[Integer],
'recover_after_nodes' => Optional[Integer],
'recover_after_time' => Optional[String],
'awareness_attributes' => Optional[String],
'unicast_hosts' => Optional[Array[String]],
'bind_networks' => Optional[Array[String]],
'publish_host' => Optional[String],
'filter_cache_size' => Optional[String],
'bulk_thread_pool_executors' => Optional[Integer],
'bulk_thread_pool_capacity' => Optional[Integer],
'load_fixed_bitset_filters_eagerly' => Optional[Boolean],
'gc_log' => Optional[Boolean],
'search_shard_count_limit' => Optional[Integer],
'reindex_remote_whitelist' => Optional[String],
# TODO: remove
'script_max_compilations_per_minute' => Optional[Integer[0]],
'ltr_cache_size' => Optional[String],
'curator_uses_unicast_hosts' => Optional[Boolean],
'send_logs_to_logstash' => Optional[Boolean],
'tune_gc_new_size_ratio' => Optional[Integer],
'disktype' => Optional[Enum['ssd','hdd']],
'use_cms_gc' => Optional[Boolean],
'cms_gc_init_occupancy_fraction' => Optional[Integer],
'compatibility_mode' => Optional[Boolean],
'disable_security_plugin' => Optional[Boolean],
# Dummy parameters consumed upstream of opensearch::instance,
# but convenient to declare per-cluster
'certificate_name' => Optional[String],
'cluster_hosts' => Optional[Array[String]],
'tls_port' => Optional[Stdlib::Port],
'tls_ro_port' => Optional[Stdlib::Port],
'short_cluster_name' => Optional[String],
'indices_to_monitor' => Optional[Array[String]],
}]