# Do i need to specify node ips in all nodes? **URL:** \ **Category:** Elasticsearch\ **Created:** [October 13, 2015, 11:05am UTC](https://discuss.elastic.co/t/do-i-need-to-specify-node-ips-in-all-nodes/32078 "2015-10-13T11:05:48Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![N\_M\_10](https://avatars.discourse-cdn.com/v4/letter/n/f19dbf/32.png) [@N\_M\_10](https://discuss.elastic.co/u/N_M_10)\ **Post date:** [October 13, 2015, 11:05am UTC](https://discuss.elastic.co/t/do-i-need-to-specify-node-ips-in-all-nodes/32078/1 "2015-10-13T11:05:48Z")
Hi, Size of our Data is about 50 MB. Since we are planning to serve 50,000 QPS (Query Per Sec). We are going with 8 Node cluster - 5 Data Nodes (Dedicated) - 3 Master Nodes (Dedicated) I have realize that people won't dare to read my config. So, I am making it easy, do i need to put ``` discovery.zen.ping.unicast.hosts: ["datanode-1", "datanode-2", "datanode-3", "datanode-4", "datanode-5"] ``` In all 8 nodes or only in master or only in data? OR Do i need the below one in all my nodes ``` discovery.zen.ping.unicast.hosts: ["master-1","master-2","master-3","datanode-1", "datanode-2", "datanode-3", "datanode-4", "datanode-5"] ``` ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [October 13, 2015, 8:27pm UTC](https://discuss.elastic.co/t/do-i-need-to-specify-node-ips-in-all-nodes/32078/2 "2015-10-13T20:27:54Z")
You can just list the masters. The setting is a seed, so once it can contact one node it will contact the rest. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 5, 2017, 11:45pm UTC](https://discuss.elastic.co/t/do-i-need-to-specify-node-ips-in-all-nodes/32078/3 "2017-07-05T23:45:00Z")