I read many threads related to "Bootstrap check failed" but didn't get any solution.

I am using elasticsearch for production environment.

below is my ES configuration

    clustername: elasticsearch
    node.name: xyz
    node.master: true
    node.data: true
    path.data: /var/elasticseaarch/data
    patah.logs: /var/elasticsearch/logs
    transport.port: 9300
    discovery.zen.ping.unicast.hosts: ["", "", ""]
    discovery.zen.minimum_master_node: 2

OS and ES version

    ES  version: 5.6.12
    Linux Version: Redhat 7.6
    Kernel version: 3.10.0

I tried with all the configuration which I got in other threads for example:

    network.host: _eth0_
    transport.host: localhost

**Unfortunately no luck**

Error logs are below:

    [2018-12-12T14:16:13,023][INFO ][o.e.b.BootstrapCheck ] [ssosearch01] bound or publishing
    to a non-loopback or non-link-local address, enforcing bootstrap checks

    [2018-12-12T14:16:13,024][ERROR][o.e.b.Bootstrap ] [ssosearch01] node validation
    exception bootstrap checks failed

I am trying to resolve this issue from the past 2 days.

Any help would be appriciated.