ElasticSearch 分布式安裝及調優

三台ubuntuServer 的 ip: 192.168.0.4，192.168.0.5，192.168.0.6

從官網下載下傳elasticsearch 版本2.2.1

解壓到/opt/目錄下

sudo tar -zxvf  elasticsearch-.tar.gz -C /opt
           

對ip為192.168.0.4的主機

進入/opt/elasticsearch-2.2.1/config/并修改elasticsearch.yml

# ======================== Elasticsearch Configuration =========================
#
# NOTE: Elasticsearch comes with reasonable defaults for most settings.
#       Before you set out to tweak and tune the configuration, make sure you
#       understand what are you trying to accomplish and the consequences.
#
# The primary way of configuring a node is via this file. This template lists
# the most important settings you may want to configure for a production cluster.
#
# Please see the documentation for further information on configuration options:
# <http://www.elastic.co/guide/en/elasticsearch/reference/current/setup-configuration.html>
#
# ---------------------------------- Cluster -----------------------------------
#
# Use a descriptive name for your cluster:
#
cluster.name: qiaqia
#
# ------------------------------------ Node ------------------------------------
#
# Use a descriptive name for the node:
#
 node.name: dngel
#
# Add custom attributes to the node:
#
# node.rack: r1
#
# ----------------------------------- Paths ------------------------------------
#
# Path to directory where to store the data (separate multiple locations by comma):
#
# path.data: /path/to/data
#
# Path to log files:
#
# path.logs: /path/to/logs
#
# ----------------------------------- Memory -----------------------------------
#
# Lock the memory on startup:
#
 bootstrap.mlockall: true
#
# Make sure that the `ES_HEAP_SIZE` environment variable is set to about half the memory
# available on the system and that the owner of the process is allowed to use this limit.
#
# Elasticsearch performs poorly when the system is swapping the memory.
#
# ---------------------------------- Network -----------------------------------
#
# Set the bind address to a specific IP (IPv4 or IPv6):
#
 network.host: 
#
# Set a custom port for HTTP:
#
# http.port: 9200
#
# For more information, see the documentation at:
# <http://www.elastic.co/guide/en/elasticsearch/reference/current/modules-network.html>
#
# --------------------------------- Discovery ----------------------------------
#
# Pass an initial list of hosts to perform discovery when new node is started:
# The default list of hosts is ["127.0.0.1", "[::1]"]
 discovery.zen.ping.multicast.enabled: false
 discovery.zen.ping.unicast.hosts: ["192.168.0.5", "192.168.0.6"]
#
# Prevent the "split brain" by configuring the majority of nodes (total number of nodes / 2 + 1):
#
 discovery.zen.minimum_master_nodes: 
#
# For more information, see the documentation at:
# <http://www.elastic.co/guide/en/elasticsearch/reference/current/modules-discovery.html>
#
# ---------------------------------- Gateway -----------------------------------
#
# Block initial recovery after a full cluster restart until N nodes are started:
#
# gateway.recover_after_nodes: 3
#
# For more information, see the documentation at:
# <http://www.elastic.co/guide/en/elasticsearch/reference/current/modules-gateway.html>
#
# ---------------------------------- Various -----------------------------------
#
# Disable starting multiple nodes on a single system:
#
# node.max_local_storage_nodes: 1
#
# Require explicit names when deleting indices:
#
# action.destructive_requires_name: true
           

安裝head插件

[email protected]:/opt/elasticsearch-2.2.1/bin#

sudo ./plugin install mobz/elasticsearch-head

其他插件安裝可參照官網插件安裝

配置另外兩台主機

将elasticsearch-2.2.1複制到192.168.0.5和192.168.0.6

修改elasticsearch.yml

對192.168.0.5, 找到并修改下面配置

node.name: engel
network.host: 192.168.0.5
discovery.zen.ping.unicast.hosts: ["192.168.0.4", "192.168.0.6"]
           

對192.168.0.6, 找到并修改下面配置

node.name: fngel
network.host: 192.168.0.6
discovery.zen.ping.unicast.hosts: ["192.168.0.4", "192.168.0.5"]
           

調優

修改Es占用記憶體：vim /opt/elasticsearch-2..2.1/bin/elasticsearch.in.sh

找到 ES_MIN_MEM和ES_MAX_MEM，修改es最大和最小占用記憶體值, 這裡我設定為1g，視機器具體情況而定

修改/etc/security/limits.conf

加上

angel soft memlock unlimited
angel hard memlock unlimited
angel soft nofile 
angel hard nofile 
           

重新開機電腦使配置生效angel

elasticsearch 的啟動和關閉

分别在每個節點的/opt/elasticsearch-2.2.1/bin輸入

./elasticsearch

啟動完畢後，可以輸入

curl '192.168.0.4:9200/_cluster/health?pretty'

檢視叢集健康狀态

顯示為green

{

    "cluster_name": "qiaqia",
    "status": "green",
    "timed_out": false,
    "number_of_nodes": ,
    "number_of_data_nodes": ,
    "active_primary_shards": ,
    "active_shards": ,
    "relocating_shards": ,
    "initializing_shards": ,
    "unassigned_shards": ,
    "delayed_unassigned_shards": ,
    "number_of_pending_tasks": ,
    "number_of_in_flight_fetch": ,
    "task_max_waiting_in_queue_millis": ,
    "active_shards_percent_as_number": 

}
           

在浏覽器輸入

http://192.168.0.4:9200/_plugin/head/

，可觀察到叢集狀态