elasticsearch 跨网段组集群

elasticsearch 是非常流行的全文搜索引擎，但网上的教程多是初次使用，并没有一些高级用法demo。这次遇到需要跨网段组网问题，自己摸索了文档很久，发现确实可行，于是着手做了个实验，最终实验成功。在跨网段下实现了自动发现和组网。

总共运行了三个节点，一个节点IP是192.168.45.67，另外两个节点IP都是172.20.5.161三个文件的配置文件都改为如下配置文件，先后启动三个节点，记录日志在后面。

192.168.45.67节点启动后，自动用9300作为通信端口，将自身作为master节点存在。

172.20.5.161节点启动后，自动用9300作为通信端口，发现hosts列表中有master存在，master将其加入集群中。

172.20.5.161节点启动后，发现9300被占用，自动用9301作为通信端口，发现hosts列表中有master存在，master将其加入集群中。

192.168.45.67：9300添加日志

172.20.5.161：9300添加日志

172.20.5.161：9301添加

elasticsearch-1.5.2/config/elasticsearch.yml需要修改部分为

discovery.zen.ping.multicast.enabled和discovery.zen.ping.unicast.hosts，修改如下：

################################## Discovery ##################################

# Discovery infrastructure ensures nodes can be found within a cluster

# and master node is elected. Multicast discovery is the default.

# Set to ensure a node sees N other master eligible nodes to be considered

# operational within the cluster. This should be set to a quorum/majority of

# the master-eligible nodes in the cluster.

#

#discovery.zen.minimum_master_nodes: 1

# Set the time to wait for ping responses from other nodes when discovering.

# Set this option to a higher value on a slow or congested network

# to minimize discovery failures:

#

#discovery.zen.ping.timeout: 3s

# For more information, see

# <http://elasticsearch.org/guide/en/elasticsearch/reference/current/modules-discovery-zen.html>

# Unicast discovery allows to explicitly control which nodes will be used

# to discover the cluster. It can be used when multicast is not present,

# or to restrict the cluster communication-wise.

#

# 1. Disable multicast discovery (enabled by default):

#

discovery.zen.ping.multicast.enabled: false

#

# 2. Configure an initial list of master nodes in the cluster

#    to perform discovery when new nodes (master or data) are started:

#

discovery.zen.ping.unicast.hosts: ["192.168.45.67", "172.20.5.161:9300"]

# EC2 discovery allows to use AWS EC2 API in order to perform discovery.

#

# You have to install the cloud-aws plugin for enabling the EC2 discovery.

#

# For more information, see

# <http://elasticsearch.org/guide/en/elasticsearch/reference/current/modules-discovery-ec2.html>

#

# See <http://elasticsearch.org/tutorials/elasticsearch-on-ec2/>

# for a step-by-step tutorial.

# GCE discovery allows to use Google Compute Engine API in order to perform discovery.

#

# You have to install the cloud-gce plugin for enabling the GCE discovery.

#

# For more information, see <https://github.com/elasticsearch/elasticsearch-cloud-gce>.

# Azure discovery allows to use Azure API in order to perform discovery.

#

# You have to install the cloud-azure plugin for enabling the Azure discovery.

#

# For more information, see <https://github.com/elasticsearch/elasticsearch-cloud-azure>.

配置的中文注释请看：

http://www.tuicool.com/articles/Nryu2i