Something probably missing ?

[cburtin]

Hello,

I follow the instructions very carefully on a debian 9, tried many (many) times with small changes (dns, ip, localhost, other version of hbase ...), tried again the whole installation process 4 times to make it work,

I found some issues with memory, maybe you should consider adding this step to the procedure :
sudo sysctl -w vm.max_map_count=262144

But there is something I am probably missing or ignore. Prediction IO is not connecting to the elasticsearch.

aml@pio-master:~$ pio status
[INFO] [Management$] Inspecting PredictionIO...
[INFO] [Management$] PredictionIO 0.13.0 is installed at /opt/pio/PredictionIO-0.13.0
[INFO] [Management$] Inspecting Apache Spark...
[INFO] [Management$] Apache Spark is installed at /usr/local/spark
[INFO] [Management$] Apache Spark 2.3.2 detected (meets minimum requirement of 1.6.3)
[INFO] [Management$] Inspecting storage backend connections...
[INFO] [Storage$] Verifying Meta Data Backend (Source: ELASTICSEARCH)...
[ERROR] [Management$] Unable to connect to all storage backends successfully.
The following shows the error message from the storage backend.

Connexion refusée (java.net.ConnectException)

Dumping configuration of initialized storage backend sources.
Please make sure they are correct.

Source Name: ELASTICSEARCH; Type: elasticsearch; Configuration: HOME -> /usr/local/elasticsearch, HOSTS -> localhost, PORTS -> 9200, SCHEMES -> http, CLUSTERNAME -> pio, TYPE -> elasticsearch

Could you tell me where to look at to fix this ?