Elasticsearch-oss cannot bind to local and external addresses at same time - elasticsearch

Question

trying to set Elasticsearch to bind to another address than local, I'm having lot of troubles..
Elasticsearch-oss 7.7 Opendistro.
elasticsearch.yml:
# ---------------------------------- Network -----------------------------------
#
# Set the bind address to a specific IP (IPv4 or IPv6):
#
#network.host: 192.168.0.1
#
# Set a custom port for HTTP:
#
#http.port: 9200
cannot set to any syntax... tryed an array
network.host: [ "127.0.0.1", "100.0.0.1" ]
...and tryed different variations, like special values, etc.
network.host: 0.0.0.0
also not working...
network:
host: _global_
also not working...
(using global address for testing)
network:
host: _local_
working
network:
host: _local_ , _interface-name_
...not working.
Finally I found a way to bind to another address. And I can get a request externally...but now the localhost is failing!
network.host: localhost
http.host: 100.0.0.1
From the same server:
curl -XGET https://localhost:9200 -u admin:admin --insecure
curl: (7) Failed to connect to localhost port 9200: Connection refused
From the client:
curl -XGET https://100.0.0.1:9200 -u admin:admin --insecure
{
"name" : "somename",
"cluster_name" : "someclustername",
"cluster_uuid" : "someclusteruuid",
"version" : {
"number" : "7.7.0",
"build_flavor" : "oss",
"build_type" : "deb",
"build_hash" : "81a1e9eda8e6183f5237786246f6dced26a10eaf",
"build_date" : "2020-05-12T02:01:37.602180Z",
"build_snapshot" : false,
"lucene_version" : "8.5.1",
"minimum_wire_compatibility_version" : "6.8.0",
"minimum_index_compatibility_version" : "6.0.0-beta1"
},
"tagline" : "You Know, for Search"
}
waiting your approach to this problem..
Thanks
[edit]
Now I found a certificate error log....I don't know if it is related.
Using default security settings for Opendistro plugin
at java.lang.Thread.run(Thread.java:832) [?:?]
Caused by: javax.net.ssl.SSLHandshakeException: Received fatal alert: bad_certificate
at sun.security.ssl.Alert.createSSLException(Alert.java:131) ~[?:?]
at sun.security.ssl.Alert.createSSLException(Alert.java:117) ~[?:?]
at sun.security.ssl.TransportContext.fatal(TransportContext.java:311) ~[?:?]
at sun.security.ssl.Alert$AlertConsumer.consume(Alert.java:291) ~[?:?]
at sun.security.ssl.TransportContext.dispatch(TransportContext.java:184) ~[?:?]
at sun.security.ssl.SSLTransport.decode(SSLTransport.java:167) ~[?:?]
at sun.security.ssl.SSLEngineImpl.decode(SSLEngineImpl.java:729) ~[?:?]
at sun.security.ssl.SSLEngineImpl.readRecord(SSLEngineImpl.java:684) ~[?:?]
at sun.security.ssl.SSLEngineImpl.unwrap(SSLEngineImpl.java:499) ~[?:?]
at sun.security.ssl.SSLEngineImpl.unwrap(SSLEngineImpl.java:475) ~[?:?]
at javax.net.ssl.SSLEngine.unwrap(SSLEngine.java:634) ~[?:?]

Answer 1

Here the full elasticsearch.yml
The security cert options are default by Opendistro
# ======================== 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: somename
#
# ------------------------------------ Node ------------------------------------
#
# Use a descriptive name for the node:
#
#node.name: node-1
#
# 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
#
# 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: 192.168.0.1
network.host: localhost
http.host: 100.0.0.1
#
# 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: ["host1", "host2"]
#
# Bootstrap the cluster using an initial set of master-eligible nodes:
#
#cluster.initial_master_nodes: ["node-1", "node-2"]
#
# 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
######## Start OpenDistro for Elasticsearch Security Demo Configuration ########
# WARNING: revise all the lines below before you go into production
opendistro_security.ssl.transport.pemcert_filepath: esnode.pem
opendistro_security.ssl.transport.pemkey_filepath: esnode-key.pem
opendistro_security.ssl.transport.pemtrustedcas_filepath: root-ca.pem
opendistro_security.ssl.transport.enforce_hostname_verification: false
opendistro_security.ssl.http.enabled: true
opendistro_security.ssl.http.pemcert_filepath: esnode.pem
opendistro_security.ssl.http.pemkey_filepath: esnode-key.pem
opendistro_security.ssl.http.pemtrustedcas_filepath: root-ca.pem
opendistro_security.allow_unsafe_democertificates: true
opendistro_security.allow_default_init_securityindex: true
opendistro_security.authcz.admin_dn:
- CN=kirk,OU=client,O=client,L=test, C=de
opendistro_security.audit.type: internal_elasticsearch
opendistro_security.enable_snapshot_restore_privilege: true
opendistro_security.check_snapshot_restore_write_privileges: true
opendistro_security.restapi.roles_enabled: ["all_access", "security_rest_api_access"]
cluster.routing.allocation.disk.threshold_enabled: false
node.max_local_storage_nodes: 3
######## End OpenDistro for Elasticsearch Security Demo Configuration ########
What does "client" mean in this context?
A client-node that is shipping logs to the server-node. In this case for testing purposses.
I will configure the certs properly and the discovery.type to see if that can be the fix
Thanks