I followed the instructions (of course some artifacts needed update to be consistent with the latest Artemis version) and I can see now metrics exposed and visible in Prometheus, but the list is very small and many things are missing.
# HELP artemis_delivering_durable_persistent_size persistent size of durable messages that this queue is currently delivering to its consumers
# TYPE artemis_delivering_durable_persistent_size gauge
artemis_delivering_durable_persistent_size{address="DLQ",broker="0.0.0.0",queue="DLQ",} 0.0
artemis_delivering_durable_persistent_size{address="ExpiryQueue",broker="0.0.0.0",queue="ExpiryQueue",} 0.0
# HELP artemis_messages_expired number of messages expired from this queue since it was created
# TYPE artemis_messages_expired gauge
artemis_messages_expired{address="DLQ",broker="0.0.0.0",queue="DLQ",} 0.0
artemis_messages_expired{address="ExpiryQueue",broker="0.0.0.0",queue="ExpiryQueue",} 0.0
# HELP artemis_routed_message_count number of messages routed to one or more bindings
# TYPE artemis_routed_message_count gauge
artemis_routed_message_count{address="transactions.topic",broker="0.0.0.0",} 0.0
artemis_routed_message_count{address="ExpiryQueue",broker="0.0.0.0",} 0.0
artemis_routed_message_count{address="DLQ",broker="0.0.0.0",} 0.0
artemis_routed_message_count{address="activemq.notifications",broker="0.0.0.0",} 0.0
# HELP artemis_delivering_durable_message_count number of durable messages that this queue is currently delivering to its consumers
# TYPE artemis_delivering_durable_message_count gauge
artemis_delivering_durable_message_count{address="DLQ",broker="0.0.0.0",queue="DLQ",} 0.0
artemis_delivering_durable_message_count{address="ExpiryQueue",broker="0.0.0.0",queue="ExpiryQueue",} 0.0
# HELP artemis_scheduled_durable_message_count number of durable scheduled messages in this queue
# TYPE artemis_scheduled_durable_message_count gauge
artemis_scheduled_durable_message_count{address="DLQ",broker="0.0.0.0",queue="DLQ",} 0.0
artemis_scheduled_durable_message_count{address="ExpiryQueue",broker="0.0.0.0",queue="ExpiryQueue",} 0.0
# HELP jvm_memory_used_bytes The amount of used memory
# TYPE jvm_memory_used_bytes gauge
jvm_memory_used_bytes{area="nonheap",id="CodeHeap 'profiled nmethods'",} 8464000.0
jvm_memory_used_bytes{area="heap",id="G1 Survivor Space",} 5242880.0
jvm_memory_used_bytes{area="heap",id="G1 Old Gen",} 1.201388E7
jvm_memory_used_bytes{area="nonheap",id="Metaspace",} 3.7032912E7
jvm_memory_used_bytes{area="nonheap",id="CodeHeap 'non-nmethods'",} 1319168.0
jvm_memory_used_bytes{area="heap",id="G1 Eden Space",} 1.7825792E7
jvm_memory_used_bytes{area="nonheap",id="Compressed Class Space",} 4299112.0
jvm_memory_used_bytes{area="nonheap",id="CodeHeap 'non-profiled nmethods'",} 1591296.0
# HELP artemis_delivering_persistent_size persistent size of messages that this queue is currently delivering to its consumers
# TYPE artemis_delivering_persistent_size gauge
artemis_delivering_persistent_size{address="DLQ",broker="0.0.0.0",queue="DLQ",} 0.0
artemis_delivering_persistent_size{address="ExpiryQueue",broker="0.0.0.0",queue="ExpiryQueue",} 0.0
# HELP artemis_scheduled_persistent_size persistent size of scheduled messages in this queue
# TYPE artemis_scheduled_persistent_size gauge
artemis_scheduled_persistent_size{address="DLQ",broker="0.0.0.0",queue="DLQ",} 0.0
artemis_scheduled_persistent_size{address="ExpiryQueue",broker="0.0.0.0",queue="ExpiryQueue",} 0.0
# HELP artemis_unrouted_message_count number of messages not routed to any bindings
# TYPE artemis_unrouted_message_count gauge
artemis_unrouted_message_count{address="transactions.topic",broker="0.0.0.0",} 0.0
artemis_unrouted_message_count{address="ExpiryQueue",broker="0.0.0.0",} 0.0
artemis_unrouted_message_count{address="DLQ",broker="0.0.0.0",} 0.0
artemis_unrouted_message_count{address="activemq.notifications",broker="0.0.0.0",} 0.0
# HELP artemis_disk_store_usage Memory used by the disk store
# TYPE artemis_disk_store_usage gauge
artemis_disk_store_usage{broker="0.0.0.0",} 0.3252151758734422
# HELP artemis_message_count number of messages currently in this queue (includes scheduled, paged, and in-delivery messages)
# TYPE artemis_message_count gauge
artemis_message_count{address="DLQ",broker="0.0.0.0",queue="DLQ",} 0.0
artemis_message_count{address="ExpiryQueue",broker="0.0.0.0",queue="ExpiryQueue",} 0.0
# HELP artemis_connection_count Number of clients connected to this server
# TYPE artemis_connection_count gauge
artemis_connection_count{broker="0.0.0.0",} 0.0
# HELP artemis_messages_added number of messages added to this queue since it was created
# TYPE artemis_messages_added gauge
artemis_messages_added{address="DLQ",broker="0.0.0.0",queue="DLQ",} 0.0
artemis_messages_added{address="ExpiryQueue",broker="0.0.0.0",queue="ExpiryQueue",} 0.0
# HELP artemis_scheduled_message_count number of scheduled messages in this queue
# TYPE artemis_scheduled_message_count gauge
artemis_scheduled_message_count{address="DLQ",broker="0.0.0.0",queue="DLQ",} 0.0
artemis_scheduled_message_count{address="ExpiryQueue",broker="0.0.0.0",queue="ExpiryQueue",} 0.0
# HELP jvm_memory_committed_bytes The amount of memory in bytes that is committed for the Java virtual machine to use
# TYPE jvm_memory_committed_bytes gauge
jvm_memory_committed_bytes{area="nonheap",id="CodeHeap 'profiled nmethods'",} 8519680.0
jvm_memory_committed_bytes{area="heap",id="G1 Survivor Space",} 5242880.0
jvm_memory_committed_bytes{area="heap",id="G1 Old Gen",} 3.93216E8
jvm_memory_committed_bytes{area="nonheap",id="Metaspace",} 3.8141952E7
jvm_memory_committed_bytes{area="nonheap",id="CodeHeap 'non-nmethods'",} 2555904.0
jvm_memory_committed_bytes{area="heap",id="G1 Eden Space",} 1.40509184E8
jvm_memory_committed_bytes{area="nonheap",id="Compressed Class Space",} 4718592.0
jvm_memory_committed_bytes{area="nonheap",id="CodeHeap 'non-profiled nmethods'",} 2555904.0
# HELP artemis_consumer_count number of consumers consuming messages from this queue
# TYPE artemis_consumer_count gauge
artemis_consumer_count{address="DLQ",broker="0.0.0.0",queue="DLQ",} 0.0
artemis_consumer_count{address="ExpiryQueue",broker="0.0.0.0",queue="ExpiryQueue",} 0.0
# HELP jvm_buffer_count_buffers An estimate of the number of buffers in the pool
# TYPE jvm_buffer_count_buffers gauge
jvm_buffer_count_buffers{id="mapped",} 20.0
jvm_buffer_count_buffers{id="direct",} 244.0
# HELP jvm_buffer_memory_used_bytes An estimate of the memory that the Java virtual machine is using for this buffer pool
# TYPE jvm_buffer_memory_used_bytes gauge
jvm_buffer_memory_used_bytes{id="mapped",} 189300.0
jvm_buffer_memory_used_bytes{id="direct",} 2078922.0
# HELP artemis_scheduled_durable_persistent_size persistent size of durable scheduled messages in this queue
# TYPE artemis_scheduled_durable_persistent_size gauge
artemis_scheduled_durable_persistent_size{address="DLQ",broker="0.0.0.0",queue="DLQ",} 0.0
artemis_scheduled_durable_persistent_size{address="ExpiryQueue",broker="0.0.0.0",queue="ExpiryQueue",} 0.0
# HELP artemis_messages_acknowledged number of messages acknowledged from this queue since it was created
# TYPE artemis_messages_acknowledged gauge
artemis_messages_acknowledged{address="DLQ",broker="0.0.0.0",queue="DLQ",} 0.0
artemis_messages_acknowledged{address="ExpiryQueue",broker="0.0.0.0",queue="ExpiryQueue",} 0.0
# HELP artemis_delivering_message_count number of messages that this queue is currently delivering to its consumers
# TYPE artemis_delivering_message_count gauge
artemis_delivering_message_count{address="DLQ",broker="0.0.0.0",queue="DLQ",} 0.0
artemis_delivering_message_count{address="ExpiryQueue",broker="0.0.0.0",queue="ExpiryQueue",} 0.0
# HELP artemis_messages_killed number of messages removed from this queue since it was created due to exceeding the max delivery attempts
# TYPE artemis_messages_killed gauge
artemis_messages_killed{address="DLQ",broker="0.0.0.0",queue="DLQ",} 0.0
artemis_messages_killed{address="ExpiryQueue",broker="0.0.0.0",queue="ExpiryQueue",} 0.0
# HELP artemis_durable_message_count number of durable messages currently in this queue (includes scheduled, paged, and in-delivery messages)
# TYPE artemis_durable_message_count gauge
artemis_durable_message_count{address="DLQ",broker="0.0.0.0",queue="DLQ",} 0.0
artemis_durable_message_count{address="ExpiryQueue",broker="0.0.0.0",queue="ExpiryQueue",} 0.0
# HELP jvm_memory_max_bytes The maximum amount of memory in bytes that can be used for memory management
# TYPE jvm_memory_max_bytes gauge
jvm_memory_max_bytes{area="nonheap",id="CodeHeap 'profiled nmethods'",} 1.22912768E8
jvm_memory_max_bytes{area="heap",id="G1 Survivor Space",} -1.0
jvm_memory_max_bytes{area="heap",id="G1 Old Gen",} 2.147483648E9
jvm_memory_max_bytes{area="nonheap",id="Metaspace",} -1.0
jvm_memory_max_bytes{area="nonheap",id="CodeHeap 'non-nmethods'",} 5828608.0
jvm_memory_max_bytes{area="heap",id="G1 Eden Space",} -1.0
jvm_memory_max_bytes{area="nonheap",id="Compressed Class Space",} 1.073741824E9
jvm_memory_max_bytes{area="nonheap",id="CodeHeap 'non-profiled nmethods'",} 1.22916864E8
# HELP artemis_total_connection_count Number of clients which have connected to this server since it was started
# TYPE artemis_total_connection_count gauge
artemis_total_connection_count{broker="0.0.0.0",} 0.0
# HELP artemis_address_memory_usage Bytes used by all the addresses on broker for in-memory messages
# TYPE artemis_address_memory_usage gauge
artemis_address_memory_usage{broker="0.0.0.0",} 0.0
# HELP artemis_durable_persistent_size persistent size of durable messages currently in this queue (includes scheduled, paged, and in-delivery messages)
# TYPE artemis_durable_persistent_size gauge
artemis_durable_persistent_size{address="DLQ",broker="0.0.0.0",queue="DLQ",} 0.0
artemis_durable_persistent_size{address="ExpiryQueue",broker="0.0.0.0",queue="ExpiryQueue",} 0.0
# HELP jvm_buffer_total_capacity_bytes An estimate of the total capacity of the buffers in this pool
# TYPE jvm_buffer_total_capacity_bytes gauge
jvm_buffer_total_capacity_bytes{id="mapped",} 189300.0
jvm_buffer_total_capacity_bytes{id="direct",} 2078921.0
# HELP artemis_persistent_size persistent size of all messages (including durable and non-durable) currently in this queue (includes scheduled, paged, and in-delivery messages)
# TYPE artemis_persistent_size gauge
artemis_persistent_size{address="DLQ",broker="0.0.0.0",queue="DLQ",} 0.0
artemis_persistent_size{address="ExpiryQueue",broker="0.0.0.0",queue="ExpiryQueue",} 0.0
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