Unable to connect to Master node from Data node in ElasticSearch

[manoj kavali]

Hi,

             I am unable to connect to master node from one of my data node. Below is error I see from elasticsearch.log

[2019-06-28T17:06:58,964][WARN ][o.e.c.c.ClusterFormationFailureHelper] [data1] master not discovered yet: have discovered []; discovery will continue using [127.0.0.1:9301, 127.0.0.1:9302, 127.0.0.1:9303, 127.0.0.1:9304, 127.0.0.1:9305, [::1]:9301, [::1]:9302, [::1]:9303, [::1]:9304, [::1]:9305] from hosts providers and [{data1}{rR43fnwoRCmahvOMz_2rhQ}{UE89ceEYTjeIx0dHLWL7iQ}{10.0.0.10}{10.0.0.10:9300}{ml.machine_memory=2011271168, xpack.installed=true, ml.max_open_jobs=20}] from last-known cluster state; node term 1, last-accepted version 15 in term 1

[2019-06-28T17:07:08,966][WARN ][o.e.c.c.ClusterFormationFailureHelper] [data1] master not discovered yet: have discovered []; discovery will continue using [127.0.0.1:9301, 127.0.0.1:9302, 127.0.0.1:9303, 127.0.0.1:9304, 127.0.0.1:9305, [::1]:9301, [::1]:9302, [::1]:9303, [::1]:9304, [::1]:9305] from hosts providers and [{data1}{rR43fnwoRCmahvOMz_2rhQ}{UE89ceEYTjeIx0dHLWL7iQ}{10.0.0.10}{10.0.0.10:9300}{ml.machine_memory=2011271168, xpack.installed=true, ml.max_open_jobs=20}] from last-known cluster state; node term 1, last-accepted version 15 in term 1

elasticsearch.yml file setup of my data1 node

# ======================== 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: ElasticSearch

#

# ------------------------------------ Node ------------------------------------

#

# Use a descriptive name for the node:

#

node.name: data1

node.master: false

#

# Add custom attributes to the node:

#

#node.attr.rack: r1

#

# ----------------------------------- Paths ------------------------------------

#

# Path to directory where to store the data (separate multiple locations by comma):

#

path.data: /var/lib/elasticsearch

#

# Path to log files:

#

path.logs: /var/log/elasticsearch

#

# ----------------------------------- Memory -----------------------------------

#

# Lock the memory on startup:

#

#bootstrap.memory_lock: true

#

"elasticsearch.yml" 93L, 3007C

# ---------------------------------- Network -----------------------------------

#

# Set the bind address to a specific IP (IPv4 or IPv6):

#

network.host: ["localhost", "10.0.0.10"]

#

# 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 this node is started:

# The default list of hosts is ["127.0.0.1", "[::1]"]

#

#discovery.seed_hosts: ["master1"]

#

# Bootstrap the cluster using an initial set of master-eligible nodes:

#

cluster.initial_master_nodes:

- master1

#

# For more information, consult the discovery and cluster formation 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

#logger.org.elasticsearch.cluster.coordination.ClusterBootstrapService: TRACE

#logger.org.elasticsearch.discovery: TRACE

#cluster.xpackEnable: false

Please help to me to fix this issue

[Adri Valle]

Hi Manoj,

In order to provide better assistance, could you please send me the master node configuration too?

If I clean the configuration that you send me, the result will be:

node.name: data1
node.master: false
path.data: /var/lib/elasticsearch
path.logs: /var/log/elasticsearch
"elasticsearch.yml" 93L, 3007C
network.host: ["localhost", "10.0.0.10"]
cluster.initial_master_nodes:
- master1

The configuration is wrong, for example, if this is a data node node.master: false should be node.data: true and this line "elasticsearch.yml" 93L, 3007C is wrong.

If you send me the master node configuration I could deploy an environment with your configuration and test it in order to fix the problem.

Regards,

Adri,