# How to bind the public IP? **URL:** \ **Category:** Elasticsearch\ **Created:** [November 11, 2019, 9:49am UTC](https://discuss.elastic.co/t/how-to-bind-the-public-ip/207318 "2019-11-11T09:49:19Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Pinno\_Lin](https://avatars.discourse-cdn.com/v4/letter/p/aca169/32.png) [@Pinno\_Lin](https://discuss.elastic.co/u/Pinno_Lin)\ **Post date:** [November 11, 2019, 9:49am UTC](https://discuss.elastic.co/t/how-to-bind-the-public-ip/207318/1 "2019-11-11T09:49:19Z")
Hi All, I have 4 node prepare to 1 master (172.20.9.45, 192.168.1.1) and 3 data node (192.168.1.11 ~13). The 172.20.9.x is public LAN, 192.168.1.x is private LAN by hub. The ES version : 7.4.0 these is my elasticsearch.yml for per node. **Master node:** node.name: oaelk2-em01 node.master: true node.data: false network.host: oaelk2-em01 discovery.seed\_hosts: ["oaelk2-em01", "oaelk2-ed01", "oaelk2-ed02", "oaelk2-ed03"] cluster.initial\_master\_nodes: ["oaelk2-em01", "oaelk2-ed01", "oaelk2-ed02", "oaelk2-ed03"] **Data node** (oaelk2-ed01) node.name: oaelk2-ed01 node.master: false node.data: true network.host: oaelk2-ed01 discovery.seed\_hosts: ["oaelk2-em01", "oaelk2-ed01", "oaelk2-ed02", "oaelk2-ed03"] cluster.initial\_master\_nodes: ["oaelk2-em01", "oaelk2-ed01", "oaelk2-ed02", "oaelk2-ed03"] **Data node** (oaelk2-ed02) node.name: oaelk2-ed02 node.master: false node.data: true network.host: oaelk2-ed02 discovery.seed\_hosts: ["oaelk2-em01", "oaelk2-ed01", "oaelk2-ed02", "oaelk2-ed03"] cluster.initial\_master\_nodes: ["oaelk2-em01", "oaelk2-ed01", "oaelk2-ed02", "oaelk2-ed03"] **Data node** (oaelk2-ed03) node.name: oaelk2-ed03 node.master: false node.data: true network.host: oaelk2-ed03 discovery.seed\_hosts: ["oaelk2-em01", "oaelk2-ed01", "oaelk2-ed02", "oaelk2-ed03"] cluster.initial\_master\_nodes: ["oaelk2-em01", "oaelk2-ed01", "oaelk2-ed02", "oaelk2-ed03"] These is /etc/hosts for per node (master & data node) 192.168.1.1 OAELK2-EM01 192.168.1.11 OAELK2-ED01 192.168.1.12 OAELK2-ED02 192.168.1.13 OAELK2-ED03 But just only use 192.168.1.1 can connect to ES Master, 172.20.9.45 Can't to connect . [root@OAELK2-EM01 data]# curl [http://192.168.1.1:9200/\_cat/nodes?v](http://192.168.1.1:9200/_cat/nodes?v) ip heap.percent ram.percent cpu load\_1m load\_5m load\_15m node.role master name 192.168.1.12 2 25 0 0.00 0.01 0.05 dil - oaelk2-ed02 192.168.1.11 2 24 0 0.00 0.01 0.05 dil - oaelk2-ed01 192.168.1.13 2 25 0 0.00 0.01 0.05 dil - oaelk2-ed03 192.168.1.1 2 24 0 0.00 0.01 0.05 ilm \* oaelk2-em01 [root@OAELK2-EM01 data]# curl [http://172.20.9.45:9200/\_cat/nodes?v](http://172.20.9.45:9200/_cat/nodes?v) curl: (7) Failed connect to 172.20.9.45:9200; Connection refused How to bind the public IP??? Thank a lot. ---
**Author:** ![spinscale](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/spinscale/32/25011_2.png) [@spinscale](https://discuss.elastic.co/u/spinscale)\ **Post date:** [November 11, 2019, 10:16am UTC](https://discuss.elastic.co/t/how-to-bind-the-public-ip/207318/2 "2019-11-11T10:16:53Z")
your /etc/hosts only contains `192.168` ips, you bind to hosts mentioned in the `/etc/hosts` - can you explain why you then expect to bind to another IP address that has not been specified anywhere? Maybe I am missing something in the configuration setup. You can set the `network.host` setting to be bound to an interface or simply `0.0.0.0` to listen to all interfaces. ---
**Author:** ![Pinno\_Lin](https://avatars.discourse-cdn.com/v4/letter/p/aca169/32.png) [@Pinno\_Lin](https://discuss.elastic.co/u/Pinno_Lin)\ **Post date:** [November 12, 2019, 1:22am UTC](https://discuss.elastic.co/t/how-to-bind-the-public-ip/207318/3 "2019-11-12T01:22:43Z")
Hi, Thank for your reply. Because all node in private LAN, just only master node need to accept request from outside, so the master node have 2 IP (172.20.9.45, 192.168.1.1) . I has try to add the public IP in /etc/hosts and change network.host to 0.0.0.0 for per node. but it still not successful. the data node can't discover master node. **/etc/hosts** (per node) 172.20.9.45 OAELK2-EM01 192.168.1.1 OAELK2-EM01 192.168.1.11 OAELK2-ED01 192.168.1.12 OAELK2-ED02 192.168.1.13 OAELK2-ED03 **Master node** cluster.name: es\_c2 node.name: oaelk2-em01 node.master: true node.data: false network.host: 0.0.0.0 discovery.seed\_hosts: ["oaelk2-em01", "oaelk2-ed01", "oaelk2-ed02", "oaelk2-ed03"] cluster.initial\_master\_nodes: ["oaelk2-em01", "oaelk2-ed01", "oaelk2-ed02", "oaelk2-ed03"] **Data node** (oaelk2-ed01) cluster.name: es\_c2 node.name: oaelk2-ed01 node.master: false node.data: true network.host: 0.0.0.0 discovery.seed\_hosts: ["oaelk2-em01", "oaelk2-ed01", "oaelk2-ed02", "oaelk2-ed03"] cluster.initial\_master\_nodes: ["oaelk2-em01", "oaelk2-ed01", "oaelk2-ed02", "oaelk2-ed03"] **Data node can't discover master node.** [root@OAELK2-EM01 data]# curl [http://172.20.9.45:9200/\_cat/nodes?v](http://172.20.9.45:9200/_cat/nodes?v) ip heap.percent ram.percent cpu load\_1m load\_5m load\_15m node.role master name 172.20.9.45 1 24 0 0.01 0.06 0.06 ilm \* oaelk2-em01 [root@OAELK2-EM01 data]# curl [http://192.168.1.1:9200/\_cat/nodes?v](http://192.168.1.1:9200/_cat/nodes?v) ip heap.percent ram.percent cpu load\_1m load\_5m load\_15m node.role master name 172.20.9.45 1 24 0 0.01 0.06 0.06 ilm \* oaelk2-em01 **Data node log:** [2019-11-12T17:20:55,306][WARN][o.e.c.c.ClusterFormationFailureHelper] [oaelk2-ed01] master not discovered yet: have discovered [{oaelk2-ed01}{\_0R4mR4aS1-aPfJAUYK1ww}{x-Bo4flrQjy2flKQ\_a00YQ}{192.168.1.11}{192.168.1.11:9300}{dil}{ml.machine\_memory=152102723584, xpack.installed=true, ml.max\_open\_jobs=20}]; discovery will continue using [192.168.1.1:9300, 172.20.9.45:9300, 192.168.1.12:9300, 192.168.1.13:9300] from hosts providers and from last-known cluster state; node term 17, last-accepted version 78 in term 17 ---
**Author:** ![Pinno\_Lin](https://avatars.discourse-cdn.com/v4/letter/p/aca169/32.png) [@Pinno\_Lin](https://discuss.elastic.co/u/Pinno_Lin)\ **Post date:** [November 12, 2019, 9:58am UTC](https://discuss.elastic.co/t/how-to-bind-the-public-ip/207318/4 "2019-11-12T09:58:45Z")
Hi, I had resolved my issue. Add the network.bind\_host and network.publish\_host in master node. it's work. network.bind\_host: ["192.168.1.1","172.20.9.45"] network.publish\_host: 192.168.1.1 Thank a lot. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [December 10, 2019, 10:07am UTC](https://discuss.elastic.co/t/how-to-bind-the-public-ip/207318/5 "2019-12-10T10:07:10Z")
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