Elasticsearch是一個分布式搜索服務，提供Restful API，底層基于Lucene，采用多shard的方式保證數據安全，并且提供自動resharding的功能，github等大型的站點也都采用Elasticsearch作為其搜索服務。廢話在此就不多贅述了，下面記錄下CentOS7下Elasticsearch集群部署過程：

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111

之前在三臺服務器部署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 下面再追加一臺es04機器到集群中，操作如下： qd-vpc-op-es04??? 101.119.92.16 1）安裝jdk和elasticsearch jdk-8u5-linux-x64.rpm下載地址： https://pan.baidu.com/s/1bpxtX5X??????(提取密碼：df6s) elasticsearch-5.5.0.rpm下載地址： https://pan.baidu.com/s/1mibwWeG?????（提取密碼：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 "#"?????????? //集群中每個節點的配置內容都基本一致 cluster.name: image_search???????????????????????????????????????????????????????//集群名稱 node.name: image_search_node_4???????????????????????????????????????????????????//集群中本節點的節點名稱，這里定義即可 path.data:?/data/es/data?????????????????????????????????????????????????????????//服務目錄路徑 path.logs:?/data/es/logs?????????????????????????????????????????????????????????//服務日志路徑 discovery.zen.ping.unicast.hosts: ["101.119.92.247","101.119.92.249","101.119.92.254","10.111.233.16"]?????//這里是各節點的ip地址 network.host: 0.0.0.0????????????????????????????????????????????????????????????//服務綁定的網絡地址 默認elasticsearch服務端口時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) 檢查elasticsearch的健康狀態 [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 從上面的命令結果中可以看出，本節點已經成功加入到名為image_search的elasticsearch集群中了，green表示節點狀態很健康，數據也已經在同步中了。 3）在代碼中更新elasticsearch的配置 通知開發同事，在代碼中增加新增elasticsearch節點的配置，上線更新后，到新節點上查看elasticsearch日志是否有信息寫入： [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集群中新增一個節點，做法如下： 1）在新節點上安裝jdk和elasticsearch服務，配置elasticsearch.yml文件了，啟動elasticsearch服務 2）在集群中其他節點上配置elasticsearch.yml文件，不需要啟動elasticsearch服務 3）在新節點上執行curl?'localhost:9200/_cat/indices?v'命令，查看健康狀態以及數據同步情況 4）在代碼中增加新增elasticsearch節點的配置，上線更新后，查看新增節點的elasticsearch日志是否有信息寫入 ---------------------------------------------------------------------------------------------------------------- 最后順便貼一下其他三個節點的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 ---------------------------------------------------------------------------------------------------------------- 如果關閉某個節點或將其從集群中提出來，需要提前通知該節點停止同步數據（遷移的時候會用到）： # curl -XPUT 'localhost:9200/_cluster/settings' -d '{"transient" : {"cluster.routing.allocation.enable" : "none”}}’

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本文轉自散盡浮華博客園博客，原文鏈接：http://www.cnblogs.com/kevingrace/p/7693422.html，如需轉載請自行聯系原作者

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