elasticsearch 是非常流行的全文搜索引擎，但網上的教程多是初次使用，並沒有一些高級用法demo。這次遇到需要跨網段組網問題，自己摸索了文檔很久，發現確實可行，於是着手做了個實驗，最終實驗成功。在跨網段下實現了自動發現和組網。
總共運行了三個節點，一個節點IP是192.168.45.67，另外兩個節點IP都是172.20.5.161三個文件的配置文件都改為如下配置文件，先后啟動三個節點，記錄日志在后面。
192.168.45.67節點啟動后，自動用9300作為通信端口，將自身作為master節點存在。
172.20.5.161節點啟動后，自動用9300作為通信端口，發現hosts列表中有master存在，master將其加入集群中。
172.20.5.161節點啟動后，發現9300被占用，自動用9301作為通信端口，發現hosts列表中有master存在，master將其加入集群中。
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需要修改部分為
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>.
配置的中文注釋請看：