Hi everyone,
i have to test my ElasticSearch behaviour when there are at least 2 nodes and they are in the same machine.
I created 2 directories for having 2 elasticsearch.yml to configure (i don't know if this approach is advisable).
These are my 2 elasticsearch.yml (they're the same each other):
# ======================== Elasticsearch Configuration =========================
#
# NOTE: Elasticsearch comes with reasonable defaults for most settings.
# Before you set out to tweak and tune the configuration, make sure you
# understand what are you trying to accomplish and the consequences.
#
# The primary way of configuring a node is via this file. This template lists
# the most important settings you may want to configure for a production cluster.
#
# Please consult the documentation for further information on configuration options:
# https://www.elastic.co/guide/en/elasticsearch/reference/index.html
#
# ---------------------------------- Cluster -----------------------------------
#
# Use a descriptive name for your cluster:
#
#cluster.name: my-application
#
# ------------------------------------ Node ------------------------------------
#
# Use a descriptive name for the node:
#
#node.name: node-1
#
# Add custom attributes to the node:
#
#node.attr.rack: r1
node.max_local_storage_nodes: 3
#
# ----------------------------------- Paths ------------------------------------
#
# Path to directory where to store the data (separate multiple locations by comma):
#
#path.data: /path/to/data
#
# Path to log files:
#
#path.logs: /path/to/logs
#
# ----------------------------------- Memory -----------------------------------
#
# Lock the memory on startup:
#
#bootstrap.memory_lock: true
#
# Make sure that the heap size is set to about half the memory available
# on the system and that the owner of the process is allowed to use this
# limit.
#
# Elasticsearch performs poorly when the system is swapping the memory.
#
# ---------------------------------- Network -----------------------------------
#
# Set the bind address to a specific IP (IPv4 or IPv6):
#
network.host: localhost
#
# Set a custom port for HTTP:
#
#http.port: 9200
#
# For more information, consult the network module documentation.
#
# --------------------------------- Discovery ----------------------------------
#
# Pass an initial list of hosts to perform discovery when new node is started:
#The default list of hosts is ["192.168.2.126", "[::1]"]
#
discovery.zen.ping.unicast.hosts: ["localhost:9300", "localhost:9301"]
#
# Prevent the "split brain" by configuring the majority of nodes (total number of master-eligible nodes / 2 + 1):
#
discovery.zen.minimum_master_nodes: 2
#
# For more information, consult the zen discovery module documentation.
#
# ---------------------------------- Gateway -----------------------------------
#
# Block initial recovery after a full cluster restart until N nodes are started:
#
#gateway.recover_after_nodes: 3
#
# For more information, consult the gateway module documentation.
#
# ---------------------------------- Various -----------------------------------
#
# Require explicit names when deleting indices:
#
#action.destructive_requires_name: true
xpack.security.enabled: false
xpack.security.audit.enabled: false
http.cors.enabled : true
http.cors.allow-origin : "*"
http.cors.allow-methods : OPTIONS, HEAD, GET, POST, PUT, DELETE
http.cors.allow-headers : X-Requested-With,X-Auth-Token,Content-Type, Content-Length, Authorization
http.cors.allow-credentials: true
path.repo: ["/home/giuseppe/Scrivania/elasticsearch-6.2.2/elasticsearch-backup"]
node.master: true
So, when i start my 2 elasticsearch instance, i have this behaviour:
Browse http://localhost:9200/_cluster/health?pretty
Response { "cluster_name" : "elasticsearch", "status" : "yellow", "timed_out" : false, "number_of_nodes" : 1, "number_of_data_nodes" : 1, "active_primary_shards" : 1329, "active_shards" : 1329, "relocating_shards" : 0, "initializing_shards" : 0, "unassigned_shards" : 1266, "delayed_unassigned_shards" : 0, "number_of_pending_tasks" : 0, "number_of_in_flight_fetch" : 0, "task_max_waiting_in_queue_millis" : 0, "active_shards_percent_as_number" : 51.213872832369944 }
Browse http://localhost:9200/_cat/nodes
Response {"error":{"root_cause":[{"type":"null_pointer_exception","reason":null}],"type":"null_pointer_exception","reason":null},"status":500}
Browse http://localhost:9201/_cluster/health?pretty
Response { "cluster_name" : "elasticsearch", "status" : "red", "timed_out" : false, "number_of_nodes" : 2, "number_of_data_nodes" : 2, "active_primary_shards" : 14, "active_shards" : 14, "relocating_shards" : 0, "initializing_shards" : 4, "unassigned_shards" : 2651, "delayed_unassigned_shards" : 0, "number_of_pending_tasks" : 5, "number_of_in_flight_fetch" : 0, "task_max_waiting_in_queue_millis" : 11311, "active_shards_percent_as_number" : 0.5245410266017235 }
Browse http://localhost:9201/_cat/nodes
Response 127.0.0.1 37 96 26 1.42 0.92 0.86 mdi - djVlhMR 127.0.0.1 36 96 27 1.42 0.92 0.86 mdi * aLwf7SY
Can anyone explain me this? And if my nodes are talking each other?
Thank you a lot!
