# Should http.enabled be true or false on a master only node? **URL:** \ **Category:** Elasticsearch\ **Created:** [June 3, 2015, 6:09pm UTC](https://discuss.elastic.co/t/should-http-enabled-be-true-or-false-on-a-master-only-node/1854 "2015-06-03T18:09:10Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![Chris\_Neal](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/chris_neal/32/3527_2.png) [@Chris\_Neal](https://discuss.elastic.co/u/Chris_Neal)\ **Post date:** [June 3, 2015, 6:09pm UTC](https://discuss.elastic.co/t/should-http-enabled-be-true-or-false-on-a-master-only-node/1854/1 "2015-06-03T18:09:10Z")
I was reading over this page: [Node](https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-node.html) And it doesn't answer this question. Was wondering what the correct setting was for a master only node with regards to http.enabled. I am setting up dedicated instances for client only, data only, and master only nodes. Thanks for the help! Chris ---
**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:** [June 3, 2015, 11:27pm UTC](https://discuss.elastic.co/t/should-http-enabled-be-true-or-false-on-a-master-only-node/1854/2 "2015-06-03T23:27:06Z")
If you disable HTTP on any node then Marvel or any other HTTP calls (obviously) won't work. There are no "correct" settings for this, it's up to your requirements. ---
**Author:** ![Chris\_Neal](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/chris_neal/32/3527_2.png) [@Chris\_Neal](https://discuss.elastic.co/u/Chris_Neal)\ **Post date:** [June 4, 2015, 12:06am UTC](https://discuss.elastic.co/t/should-http-enabled-be-true-or-false-on-a-master-only-node/1854/3 "2015-06-04T00:06:59Z")
Thank you Mark! I was hoping this would fix an issue I'm having with Marvel, but it did not. Perhaps this belongs in the Marvel group, but on the off chance you might know the answer, I'll start here first. 😄 I now have http.enabled = true on my 3 nodes in the cluster. 1 client node: ``` {"node.master": "false", "node.data": "false", "discovery.zen.ping.multicast.enabled": "false", "discovery.zen.ping.unicast.hosts": "n5,n6,n9", "discovery.zen.minimum_master_nodes": "1", "gateway.recover_after_data_nodes": "1", "gateway.recover_after_master_nodes": "1", "gateway.expected_nodes": "2", "cluster.name": "elasticsearch-dev", "script.disable_dynamic": "false", "action.disable_delete_all_indices": "true", "index.refresh_interval": "60s", "bootstrap.mlockall": "true", "marvel.agent.exporter.es.hosts": "n8:9200", "http.enabled": "true", "http.cors.enabled": "true", "http.cors.allow-origin": "/.*/", "http.cors.allow-credentials": "true", "threadpool.bulk.queue_size": "500", "threadpool.bulk.size": "32", "threadpool.index.queue_size": "500", "threadpool.index.size": "32", "threadpool.search.queue_size": "2000", "index.search.slowlog.threshold.query.warn": "10s", "index.search.slowlog.threshold.query.info": "5s", "index.search.slowlog.threshold.fetch.warn": "2s", "index.search.slowlog.threshold.fetch.info": "1s", "index.search.slowlog.threshold.index.warn": "10s", "index.search.slowlog.threshold.index.info": "5s", "index.codec.bloom.load": "false" } ``` 1 master node: ``` {"node.master":"true", "node.data": "false", "discovery.zen.ping.multicast.enabled": "false", "discovery.zen.ping.unicast.hosts": "n5,n6,n9", "discovery.zen.minimum_master_nodes": "1", "gateway.recover_after_data_nodes": "1", "gateway.recover_after_master_nodes": "1", "gateway.expected_nodes": "2", "cluster.name": "elasticsearch-dev", "script.disable_dynamic": "false", "action.disable_delete_all_indices": "true", "index.refresh_interval": "60s", "bootstrap.mlockall": "true", "marvel.agent.exporter.es.hosts": "n8:9200", "http.enabled": "true", "http.cors.enabled": "true", "http.cors.allow-origin": "/.*/", "http.cors.allow-credentials": "true" } ``` 1 data node: ``` {"node.master": "false", "node.data": "true", "discovery.zen.ping.multicast.enabled": "false", "discovery.zen.ping.unicast.hosts": "n5,n6,n9", "discovery.zen.minimum_master_nodes": "1", "gateway.recover_after_data_nodes": "1", "gateway.recover_after_master_nodes": "1", "gateway.expected_nodes": "2", "cluster.name": "elasticsearch-dev", "script.disable_dynamic": "false", "action.disable_delete_all_indices": "true", "index.refresh_interval": "60s", "bootstrap.mlockall": "true", "marvel.agent.exporter.es.hosts": "n8:9200", "http.enabled": "true", "http.cors.enabled": "true", "http.cors.allow-origin": "/.*/", "http.cors.allow-credentials": "true", "indices.fielddata.cache.size": "30%", "indices.breaker.total.limit": "70%", "indices.breaker.request.limit": "30%", "indices.breaker.fielddata.limit": "35%", "indices.memory.index_buffer_size": "20%", "index.compound_on_flush": "false", "threadpool.bulk.queue_size": "500", "threadpool.bulk.size": "32", "threadpool.index.queue_size": "500", "threadpool.index.size": "32", "threadpool.search.queue_size": "2000", "index.search.slowlog.threshold.query.warn": "10s", "index.search.slowlog.threshold.query.info": "5s", "index.search.slowlog.threshold.fetch.warn": "2s", "index.search.slowlog.threshold.fetch.info": "1s", "index.search.slowlog.threshold.index.warn": "10s", "index.search.slowlog.threshold.index.info": "5s", "index.codec.bloom.load": "false", "index.merge.scheduler.max_thread_count": "1", "index.merge.policy.type": "tiered", "index.merge.policy.max_merged_segment": "5gb", "index.merge.policy.segments_per_tier": "10", "index.merge.policy.max_merge_at_once": "10", "index.merge.policy.max_merge_at_once_explicit": "10", "indices.store.throttle.type": "none", "index.translog.flush_threshold_size": "1GB", "cluster.routing.allocation.disk.watermark.low": "95%", "cluster.routing.allocation.disk.watermark.high": "98%", "cluster.routing.allocation.cluster_concurrent_rebalance": "2" } ``` And I have an external cluster for Marvel by itself, with just one node (in development): ``` {"discovery.zen.minimum_master_nodes": "1", "discovery.zen.ping.multicast.enabled": "false", "discovery.zen.ping.unicast.hosts": "n8", "gateway.recover_after_nodes": "1", "cluster.name": "elasticsearch-dev-marvel", "index.number_of_replicas": "0", "index.number_of_shards": "1", "script.disable_dynamic": "false", "action.disable_delete_all_indices": "true", "index.refresh_interval": "5s", "http.enabled": "true", "marvel.agent.enabled": "false"} ``` In Marvel, the only node that shows up in the "NODES" section is the master, and there are no updates received for the last 6 hours (longer than the cluster has existed). However, in the "CLUSTER SUMMARY" section, the number of nodes is correctly listed as "3". So, _something_ is getting to Marvel correctly! I've been experimenting with various options and have not been able to get the NODES section to show properly. Do you happen to see anything in my configurations above that looks suspicious? Thank you VERY MUCH for all your help. Chris ---
**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:** [June 5, 2015, 8:13am UTC](https://discuss.elastic.co/t/should-http-enabled-be-true-or-false-on-a-master-only-node/1854/4 "2015-06-05T08:13:36Z")
Do you have time synced with each node (ie NTP)? ---
**Author:** ![Chris\_Neal](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/chris_neal/32/3527_2.png) [@Chris\_Neal](https://discuss.elastic.co/u/Chris_Neal)\ **Post date:** [June 5, 2015, 2:36pm UTC](https://discuss.elastic.co/t/should-http-enabled-be-true-or-false-on-a-master-only-node/1854/5 "2015-06-05T14:36:14Z")
Grumble. Yes, that was it. It was a new VM environment and ntp was not enabled. Sorry about that. Thank you for your time. ---
**Author:** ![tyrannasaurusbanks](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/tyrannasaurusbanks/32/4196_2.png) [@tyrannasaurusbanks](https://discuss.elastic.co/u/tyrannasaurusbanks)\ **Post date:** [August 14, 2015, 10:57am UTC](https://discuss.elastic.co/t/should-http-enabled-be-true-or-false-on-a-master-only-node/1854/6 "2015-08-14T10:57:58Z")
This thread saved my bacon - thanks guys! ---
**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, 11:55pm UTC](https://discuss.elastic.co/t/should-http-enabled-be-true-or-false-on-a-master-only-node/1854/7 "2017-07-05T23:55:48Z")