Elastic Search 7 unable to bootstrap the cluster due to master not discovered yet

[Vishal_Goel]

Hi,

I downloaded ES 7 zip package on Windows 10. I am running elasticsearch.bat simply by just double clicking it to start my first node (master) of the cluster. I am getting following error on warning (not able to bootstrap the cluster):

[2019-05-21T22:55:58,108][INFO ][o.e.n.Node               ] [pc-vishalg] node name [pc-vishalg], node ID [rqf27K-JSv2FA4jKaZpe2g], cluster name [elasticsearch]
[2019-05-21T22:56:24,406][INFO ][o.e.t.TransportService   ] [pc-vishalg] publish_address {10.254.43.206:9300}, bound_addresses {10.254.43.206:9300}, {172.18.48.177:9300}, {[fe80::1dc4:b009:43ef:5e17]:9300}, {192.168.1.28:9300}, {[fe80::4e16:7aba:42dc:7b2a]:9300}, {[fe80::216e:d23c:95b8:b711]:9300}, {[fe80::16:3529:f222:ee0e]:9300}
[2019-05-21T22:56:24,428][INFO ][o.e.b.BootstrapChecks    ] [pc-vishalg] bound or publishing to a non-loopback address, enforcing bootstrap checks
[2019-05-21T22:56:24,459][INFO ][o.e.c.c.ClusterBootstrapService] [pc-vishalg] skipping cluster bootstrapping as local node does not match bootstrap requirements: [pc-vishalg:9300]
**[2019-05-21T22:56:34,472][WARN ][o.e.c.c.ClusterFormationFailureHelper] [pc-vishalg] master not discovered yet, this node has not previously joined a bootstrapped (v7+) cluster, and this node must discover master-eligible nodes [pc-vishalg:9300] to bootstrap a cluster: have discovered []; discovery will continue using [127.0.0.1:9300, 127.0.0.1:9301, 127.0.0.1:9302, 127.0.0.1:9303, 127.0.0.1:9304, [::1]:9300, [::1]:9301, [::1]:9302, [::1]:9303, [::1]:9304] from hosts providers and [{pc-vishalg}{rqf27K-JSv2FA4jKaZpe2g}{d3ykqL6oTSqg-AmkBvpIbQ}{pc-vishalg}{10.254.43.206:9300}{ml.machine_memory=17058791424, xpack.installed=true, ml.max_open_jobs=20}] from last-known cluster state; node term 0, last-accepted version 0 in term 0**

My elasticsearch.yml is as follows:

node.name: pc-vishalg
cluster.initial_master_nodes: ["pc-vishalg:9300"]
network.bind_host: pc-vishalg
network.publish_host: pc-vishalg

Acc. to the documentation, node.name should be same as initial_master_nodes which I did provide. Can you please help me why am I getting above warning. Is anything I am doing wrong.
One observation: if I use actual IP in initial_master_nodes (not in node.name) only, it works out, create the cluster and no warnings are seen.

[ywelsch (Yannick Welsch)]

Remove the port from the cluster.initial_master_nodes setting, and it will work We have updated the docs recently to make it clearer that either node name, or ip/port is to be used. Node name/port is not a valid combination.

[Vishal_Goel]

Thanks, I will give it a try. But, is it intentional or a bug?
What if I want to run masters ES on some random ports e.g. 5200. How it is going to work with only host name as part of master list.

[ywelsch (Yannick Welsch)]

It is intentional. This setting does not denote a hostname, but the node name or the advertised publish address. In particular, it is not an address that is resolved or actively connected to. The discovery.seed_hosts setting is used for that. The cluster.initial_master_nodes setting is used to determine the identities of the subset of master-eligible nodes that participate in the bootstrapping process after discovery.seed_hosts has established a connection to the nodes.

[Vishal_Goel]

Ok. Got it. Thank you