Error: socket hang up

Open Source Elasticsearch and Kibana
1

Hello,

I’m using the AWS AMI and can connect to Kibana and ES from the local machine but cannot connect from remote endpoints. In elasticsearch.yml I set network.host to 0.0.0.0 and restarted the service but it’s still listening on 127.0.0.1. The SG is allowing inbound traffic from 0.0.0.0/0 on ports 9200 and 5601 and I see ACCEPT from the remote IP in the VPC flow logs. Remote Postman is showing “Error: socket hang up” when I attempt a GET. Any ideas as to the source of the problem?

elasticsearch.yml is as follows:

path.data: /var/lib/elasticsearch
path.logs: /var/log/elasticsearch
network.host: 0.0.0.0
discovery.seed_hosts: ["host1"]
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"]
opendistro_security.system_indices.enabled: true
opendistro_security.system_indices.indices: [".opendistro-alerting-config", ".opendistro-alerting-alert*", ".opendistro-anomaly-results*", ".opendistro-anomaly-detector*", ".opendistro-anomaly-checkpoints", ".opendistro-anomaly-detection-state", ".opendistro-reports-*", ".opendistro-notifications-*", ".opendistro-notebooks", ".opendistro-asynchronous-search-response*"]
cluster.routing.allocation.disk.threshold_enabled: false
node.max_local_storage_nodes: 3

Thanks in advance,
Steve

2

Update: the issue was within Postman itself, as it was getting caught up on SSL. Once that was disabled, the GET succeeded.