Elasticsearch是一个分布式搜索服务,提供Restful API,底层基于Lucene,采用多shard的方式保证数据安全,并且提供自动resharding的功能,github等大型的站点也都采用Elasticsearch作为其搜索服务。废话在此就不多赘述了,下面记录下CentOS7下Elasticsearch集群部署过程:
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之前在三台服务器部署Elasticsearch集群:
qd-vpc-
op
-es01 101.119.92.247
qd-vpc-
op
-es02 101.119.92.249
qd-vpc-
op
-es03 101.119.92.254
下面再追加一台es04机器到集群中,操作如下:
qd-vpc-
op
-es04 101.119.92.16
1)安装jdk和elasticsearch
jdk-8u5-linux-x64.rpm下载地址:
https:
//pan
.baidu.com
/s/1bpxtX5X
(提取密码:df6s)
elasticsearch-5.5.0.rpm下载地址:
https:
//pan
.baidu.com
/s/1mibwWeG
(提取密码:vtm2)
[root@qd-vpc-
op
-es04 ~]
# cd tools/
[root@qd-vpc-
op
-es04 tools]
# ls
elasticsearch-5.5.0.rpm jdk-8u5-linux-x64.rpm
[root@qd-vpc-
op
-es04 tools]
# rpm -ivh elasticsearch-5.5.0.rpm
[root@qd-vpc-
op
-es04 tools]
# rpm -ivh jdk-8u5-linux-x64.rpm
[root@qd-vpc-
op
-es04 tools]
# java -version
java version
"1.8.0_05"
Java(TM) SE Runtime Environment (build 1.8.0_05-b13)
Java HotSpot(TM) 64-Bit Server VM (build 25.5-b02, mixed mode)
2)配置elasticsearch
[root@qd-vpc-
op
-es04 ~]
# cd /etc/elasticsearch/
[root@qd-vpc-
op
-es04 elasticsearch]
# ls
elasticsearch.yml elasticsearch.yml.bak jvm.options log4j2.properties
nohup
.out scripts
[root@qd-vpc-
op
-es04 elasticsearch]
# cat elasticsearch.yml|grep -v "#" //集群中每个节点的配置内容都基本一致
cluster.name: image_search
//
集群名称
node.name: image_search_node_4
//
集群中本节点的节点名称,这里定义即可
path.data:
/data/es/data
//
服务目录路径
path.logs:
/data/es/logs
//
服务日志路径
discovery.zen.
ping
.unicast.hosts: [
"101.119.92.247"
,
"101.119.92.249"
,
"101.119.92.254"
,
"10.111.233.16"
]
//
这里是各节点的ip地址
network.host: 0.0.0.0
//
服务绑定的网络地址
默认elasticsearch服务端口时9200
[root@qd-vpc-
op
-es04 elasticsearch]
# cat elasticsearch.yml|grep 9200
#http.port: 9200
[root@qd-vpc-
op
-es04 elasticsearch]
# systemctl start elasticsearch.service
[root@qd-vpc-
op
-es04 elasticsearch]
# systemctl restart elasticsearch.service
[root@qd-vpc-
op
-es04 elasticsearch]
# systemctl status elasticsearch.service
[root@qd-vpc-
op
-es04 elasticsearch]
# ps -ef|grep elasticsearch
[root@qd-vpc-
op
-es04 elasticsearch]
# lsof -i:9200
COMMAND PID USER FD TYPE DEVICE SIZE
/OFF
NODE NAME
java 10998 elasticsearch 320u IPv4 39255 0t0 TCP *:wap-wsp (LISTEN)
检查elasticsearch的健康状态
[root@qd-vpc-
op
-es04 elasticsearch]
# curl 'localhost:9200/_cat/indices?v'
health status index uuid pri rep docs.count docs.deleted store.size pri.store.size
green
open
video_filter Bx7He6ZtTEWuRBqXYC6gRw 5 1 458013 0 4.1gb 2gb
green
open
recommend_history_image svYo_Do4SM6wUiv6taUWug 5 1 2865902 0 24.9gb 12.4gb
green
open
recommend_history_gif rhN3MDN2TbuYILqEDksQSg 5 1 265731 0 2.4gb 1.2gb
green
open
post_images TMsMsMEoR5Sdb7UEQJsR5Q 5 1 48724932 0 407.3gb 203.9gb
green
open
review_images_v2 qzqnknpgTniU4rCsvXzs0w 5 1 50375955 0 61.6gb 30.9gb
green
open
review_images rWC4WlfMS8aGe-GOkTauZg 5 1 51810877 0 439.3gb 219.7gb
green
open
sensitive_images KxSrjvXdSz-y8YcqwBMsZA 5 1 13393 0 128.1mb 64mb
green
open
post_images_v2 FDphBV4-QuKVoD4_G3vRtA 5 1 49340491 0 55.8gb 27.8gb
从上面的命令结果中可以看出,本节点已经成功加入到名为image_search的elasticsearch集群中了,green表示节点状态很健康,数据也已经在同步中了。
3)在代码中更新elasticsearch的配置
通知开发同事,在代码中增加新增elasticsearch节点的配置,上线更新后,到新节点上查看elasticsearch日志是否有信息写入:
[root@qd-vpc-
op
-es04 ~]
# cd /data/es/logs/
[root@qd-vpc-
op
-es04 ~]
# chown -R elasticsearch.elasticsearch /data/es
[root@qd-vpc-
op
-es04 logs]
# ls
image_search_deprecation.log image_search_index_indexing_slowlog.log image_search_index_search_slowlog.log image_search.log
----------------------------------------------------------------------------------------------------------------
注意:
如果往elasticsearch集群中新增一个节点,做法如下:
1)在新节点上安装jdk和elasticsearch服务,配置elasticsearch.yml文件了,启动elasticsearch服务
2)在集群中其他节点上配置elasticsearch.yml文件,不需要启动elasticsearch服务
3)在新节点上执行curl
'localhost:9200/_cat/indices?v'
命令,查看健康状态以及数据同步情况
4)在代码中增加新增elasticsearch节点的配置,上线更新后,查看新增节点的elasticsearch日志是否有信息写入
----------------------------------------------------------------------------------------------------------------
最后顺便贴一下其他三个节点的elasticsearch.yml文件配置:
[root@qd-vpc-
op
-es01 ~]
# cat /etc/elasticsearch/elasticsearch.yml |grep -v "#"
cluster.name: image_search
node.name: image_search_node_1
path.data:
/data/es/data
path.logs:
/data/es/logs
discovery.zen.
ping
.unicast.hosts: [
"10.111.233.16"
,
"101.119.92.247"
,
"101.119.92.249"
,
"101.119.92.254"
]
network.host: 0.0.0.0
[root@qd-vpc-
op
-es02 ~]
# cat /etc/elasticsearch/elasticsearch.yml |grep -v "#"
cluster.name: image_search
node.name: image_search_node_2
path.data:
/data/es/data
path.logs:
/data/es/logs
discovery.zen.
ping
.unicast.hosts: [
"10.111.233.16"
,
"101.119.92.247"
,
"101.119.92.249"
,
"101.119.92.254"
]
network.host: 0.0.0.0
[root@qd-vpc-
op
-es03 ~]
# cat /etc/elasticsearch/elasticsearch.yml|grep -v "#"
cluster.name: image_search
node.name: image_search_node_3
path.data:
/data/es/data
path.logs:
/data/es/logs
discovery.zen.
ping
.unicast.hosts: [
"101.119.92.247"
,
"101.119.92.249"
,
"101.119.92.254"
,
"10.111.233.16"
]
network.host: 0.0.0.0
----------------------------------------------------------------------------------------------------------------
如果关闭某个节点或将其从集群中提出来,需要提前通知该节点停止同步数据(迁移的时候会用到):
# curl -XPUT 'localhost:9200/_cluster/settings' -d '{"transient" : {"cluster.routing.allocation.enable" : "none”}}’
|
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本文转自散尽浮华博客园博客,原文链接:http://www.cnblogs.com/kevingrace/p/7693422.html,如需转载请自行联系原作者