I have one code base to connect elastic search (localhost:9200) for the full-text-search feature. We deployed this code on two different machines (m1 & m2) under load balancing server. In this case, how to configure ES in 2 different machines to connect ES and index should reflect both sides.
I am using Elasticsearch v 5.1.2
Machine 1
cluster.name: production
node.name: database
Machine 2
cluster.name: production
node.name: app
Above setting worked on ES v 1.7.1
**Question?
What configuration should I do to make it work on ES v5.1.2?
Please help me to solve this issue.
Thanks in advance
I'm assuming these nodes aren't a part of same cluster.
Try http://MACHINE_1_IP:9200/_cat/nodes?v and check if all nodes are listed as part of cluster.
If they are not - just a quick guess, have you looked at network.host setting ? It binds to local loop by default ( That maybe something introduced in 2 + )
This can be solved by using network-module setting (ref).
Update the elasticsearch.yml on both app server by keeping same cluster name and different node name
EX :
Server_1
update the elasticseach.yml
cluster.name: Production
node.name: APP
network.host: [server_1_IP, _local_]
discovery.zen.ping.unicast.hosts: [server_1_IP, server_2_IP]
On Server_2
update the elasticseach.yml
cluster.name: Production
node.name: DB
network.host: [server_2_IP, _local_]
discovery.zen.ping.unicast.hosts: [server_1_IP, server_2_IP]
Related
My cluster has a yellow health as it has only one single node, so the replicas remain unasigned simply because no other node is available to contain them.
I'am readed help in homepage:
I try add new node-data to my cluster, but it not appear when i check health's cluster.
This is config new node:
cluster.name: elasticsearch
node.name: node-data-1
node.master: false
node.data: true
node.ingest: false
node.ml: false
http.port: 9201
Old config, i don't edit. It's default.
Can someone explain me which files do I've to edit and what commands do I've to launch in order to create another node in my cluster? Do I've to run two ES instance? How can I do this?
Thanks in advance.
Make sure to remove the /data folder from each Elasticsearch install before executing the nodes. Also, in the nodes that won't be the master set the following property:
cluster.initial_master_nodes: ["machine_running_master"]
I have an ES cluster (v 5.6.12) up and running in dev mode, config below:
node1.com
cluster.name: elastic-test
node.name: "node-1"
path.data: /path/to/data
path.logs: /path/to/logs
network.host: 127.0.0.1
http.host: 0.0.0.0
discovery.zen.ping.unicast.hosts: ["node1.com", "node2.com"]
node.master: true
I am trying to connect node 2 to the same cluster:
node2.com
cluster.name: elastic-test
node.name: "node-2"
path.data: /path/to/data
path.logs: /path/to/logs
network.host: 127.0.0.1
http.host: 0.0.0.0
discovery.zen.ping.unicast.hosts: ["node1.com", "node2.com"]
node.master: true
I tried to change the network.host to their respective addresses, but this takes them out of dev mode. I also tried setting the bind and publish hosts to make the node discover-able to other nodes:
network.bind_host: 127.0.0.1
network.publish_host: node1.com
But again, this takes the nodes into production.
Is it actually possible to have multiple nodes on different servers communicate within development mode?
Short answer NO. For most use cases running a single node cluster for DEV suffices but there could be scenarios where multi node clusters are required in DEV environment, however it is not possible to currently form a multi node cluster without binding to a non local IP address.
That being said, difference between development mode and production mode with respect to Elasticsearch is just preventing ES cluster from starting if some settings are not configured appropriately. So, as long as you are able to configure the settings described in the below link then you can form a cluster and name it as DEV so users don't misidentify it as a production cluster
https://www.elastic.co/guide/en/elasticsearch/reference/5.6/system-config.html#dev-vs-prod
I have 2 separate machines. Port 9200 is already taken by a separate elasticsearch running, so I specify 9201 as the http.port in the yml file. i set cluster.name: MyCluster.
When I start ./elasticsearch on machine 1 and machine 2, they are not connected, but each are single node master's.
What do I need to do so that they can connect to each other and be part of the same cluster?
I also set network.host: 0.0.0.0 so I know they can see each other. I am using 2.4.0 of Elastcisearch.
In machine 1:
cluster.name: hello_world
network.host: "hostname_or_ip_1"
network.port: 9201
discovery.zen.ping.unicast.hosts: ["hostname_or_ip_2:9201"]
In machine 2:
cluster.name: hello_world
network.host: "hostname_or_ip_2"
network.port: 9201
discovery.zen.ping.unicast.hosts: ["hostname_or_ip_1:9201"]
Both cluster name should be same
discovery.zen.ping.unicast.hosts should point to correct machine
address with port
Make sure to restart elasticsearch node after editing config file
Look at unicast discovery with host:port. https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-discovery-zen.html
You might also need to be explicit about the transport.tcp.port in your elasticsearch.yml:
transport.tcp.port: 9301
I have several machines each with 128 GB of ram, each host is running a single instance of Elasticsearch.
I would like to run another data node on each host and allocate around 30 GB to the jvm heap.
I know I have to create a separate config file .yml and data directory..etc. My question is do I need to modify the service wrapper so that each node will be started/ stopped seperatly?
I am running ES version 1.3 on Centos 6.5
thank you
You need to prepare two elasticsearch.yml config files to configure settings accordingly and specify these files when startup up the two nodes.
bin/elasticsearch -Des.config=$ES_HOME/config/elasticsearch.1.yml
bin/elasticsearch -Des.config=$ES_HOME/config/elasticsearch.2.yml
At least the following should be set differently for the two nodes:
http.port
transport.tcp.port
path_data
path_logs
path_pid
node.name
The following needs to point to the other in both files to allow the nodes to find each other:
discovery.zen.ping.unicast.hosts: '127.0.0.1:9302'
EDIT: the property is now deprecated, look at : https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-discovery-settings.html
See this blog and this discussion
elasicsearch.yml-1
cluster.name: test
node.name: node-1
path.data: /Users/musab/Desktop/elasticsearch/data
path.logs: /Users/musab/Desktop/elasticsearch/logs
node.max_local_storage_nodes: 4
elasicsearch.yml-2
cluster.name: test
node.name: node-1
path.data: /Users/musab/Desktop/elasticsearch/data
path.logs: /Users/musab/Desktop/elasticsearch/logs
node.max_local_storage_nodes: 4
I have a strange problem when trying to setup a local running elasticsaerch cluster. I have tried a lot of settings with the bind.host and the auto discovery but did not succeed. The strange thing is if I have my wireless connection connected to a network the two nodes do not see each other. If I switch it of I do not have a problem. Following is the configuration of one node that works without a wireless adapter connected.
Does anyone have a clue what to try to make my cluster work?
cluster.name: localcluster
node.name: two
index.number_of_shards: 1
index.number_of_replicas: 0
network.host: _lo0:ipv4_
zen.ping.multicast.enabled: false
zen.ping.unicast.hosts: ["127.0.0.1"]
You are missing discovery. in the zen discovery settings. Try these settings:
cluster.name: "localcluster"
network.host: _lo0:ipv4_
discovery.zen.ping.multicast.enabled: false
discovery.zen.ping.unicast.hosts: ["127.0.0.1:9300","127.0.0.1:9301","127.0.0.1:9302"]