原文地址：
http://blog.csdn.net/laoyang360/article/details/51842822
引言：
验证表明：mongo-connector工具支持MongoDB与ES之间的实时增insert、删delete、改update操作。
对于历史数据，mongo-connector工具不能同步到ES中，根因是本身工具不支持(初步界定），还是没有这种场景，待查（进一步研究后再更新）。
1. mongo-connector 地址：
2、 mongo-connector 工具简介
mongo-connector工具创建一个从MongoDB簇到一个或多个目标系统的管道，目标系统包括：Solr，Elasticsearch，或MongoDB簇。
该工具在MongoDB与目标系统间同步数据，并跟踪MongoDB的oplog，保持操作与MongoDB的实时同步。
该工具已经在python2.6，2.7,3.3+下进行验证。
mongo-connector工具是基于开发的实时同步服务工具。它要求mongo运行在replica-set模式，且需要 elastic2_doc_manager将数据写入ES。
3、 elastic2-doc-manager 工具简介
这是Elastic2.x版本的文档管理器。对应Elastic1.x版本需要使用 elastic-doc-manager。
4、ES与MongoDB同步步骤:
（1）安装 mongo-connector。
pip install mongo-connector
（2）安装 elastic2-doc-manager。
pip install elastic2-doc-manager
注意：
如果不安装（2）直接进入（3）、（4）则会报错：
[root@5b9dbaaa148a bin]# mongo-connector -m 10.8.5.99:27017 -t 10.8.5.101:9200 -d elastic2_doc_manager Logging to mongo-connector.log.
Exception in thread Thread-1:
Traceback (most recent call last):
File "/usr/lib64/python2.6/threading.py", line 532, in __bootstrap_inner
self.run()
（3）mongo端启动
MongoDB 必须开启复制集，如果已经开启请忽略这一步：
1）通过 –replSet 设定副本集名称。
[root@b48eafd69929 bin]
2）将mongo与副本集成员连接
[root@b48eafd69929 bin] MongoDB shell version: 3.2.4 connecting to: test
Server has startup warnings: 2016-07-05T09:49:01.330+0100 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended. 2016-07-05T09:49:01.330+0100 I CONTROL [initandlisten] 2016-07-05T09:49:01.331+0100 I CONTROL [initandlisten] 2016-07-05T09:49:01.331+0100 I CONTROL [initandlisten] ** WARNING: You are running on a NUMA machine. 2016-07-05T09:49:01.331+0100 I CONTROL [initandlisten] ** We suggest launching mongod like this to avoid performance problems: 2016-07-05T09:49:01.332+0100 I CONTROL [initandlisten] ** numactl 2016-07-05T09:49:01.332+0100 I CONTROL [initandlisten] 2016-07-05T09:49:01.332+0100 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'. 2016-07-05T09:49:01.332+0100 I CONTROL [initandlisten] ** We suggest setting it to 'never' 2016-07-05T09:49:01.332+0100 I CONTROL [initandlisten] 2016-07-05T09:49:01.332+0100 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'. 2016-07-05T09:49:01.332+0100 I CONTROL [initandlisten] ** We suggest setting it to 'never' 2016-07-05T09:49:01.332+0100 I CONTROL [initandlisten]
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3）初始化副本集
> rs.initiate()
{ "info2" : "no configuration specified. Using a default configuration for the set", "me" : "b48eafd69929:27017", "ok" : 1 }
4）【验证】初始化副本集的配置
rs0:SECONDARY> rs.conf()
{ "_id" : "rs0", "version" : 1, "protocolVersion" : NumberLong(1), "members" : [
{ "_id" : 0, "host" : "b48eafd69929:27017", "arbiterOnly" : false, "buildIndexes" : true, "hidden" : false, "priority" : 1, "tags" : {
}, "slaveDelay" : NumberLong(0), "votes" : 1 }
], "settings" : { "chainingAllowed" : true, "heartbeatIntervalMillis" : 2000, "heartbeatTimeoutSecs" : 10, "electionTimeoutMillis" : 10000, "getLastErrorModes" : {
}, "getLastErrorDefaults" : { "w" : 1, "wtimeout" : 0 }, "replicaSetId" : ObjectId("577b74bd0ba41a313110ad62")
}
}
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5）【验证】副本集的状态。
rs0:PRIMARY> rs.status()
{ "set" : "rs0", "date" : ISODate("2016-07-05T08:50:55.272Z"), "myState" : 1, "term" : NumberLong(1), "heartbeatIntervalMillis" : NumberLong(2000), "members" : [
{ "_id" : 0, "name" : "b48eafd69929:27017", "health" : 1, "state" : 1, "stateStr" : "PRIMARY", "uptime" : 115, "optime" : { "ts" : Timestamp(1467708606, 1), "t" : NumberLong(1)
}, "optimeDate" : ISODate("2016-07-05T08:50:06Z"), "infoMessage" : "could not find member to sync from", "electionTime" : Timestamp(1467708605, 2), "electionDate" : ISODate("2016-07-05T08:50:05Z"), "configVersion" : 1, "self" : true
}
], "ok" : 1 }
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（4）ES端同步操作
[root@5b9dbaaa148a bin]# mongo-connector -m 10.8.5.99:27017 -t 10.8.5.101:9200 -d elastic2_doc_manager Logging to mongo-connector.log.
参数含义:
-m: mongodb的地址与端口，端口默认为27017。
-t：ES的地址与端口，端口默认为9200。
-d：doc manager的名称，2.x版本为： elastic2-doc-manager。
5、ES与MongoDB Insert插入操作的同步验证
（1）Mongo端插入数据操作：
#Mongo创建数据库（对应ES的Index） rs0:PRIMARY> use zhang_index
switched to db zhang_index #Mongo中插入数据（其中col_02对应ES中的Type） rs0:PRIMARY> db.col_02.insert({name:"laoluo", birth:"1964-03-21", sex:"man", company:"chuizi"}) WriteResult({ "nInserted" : 1 }) rs0:PRIMARY> db.col_02.insert({name:"renzhengfei", birth:"1954-03-21", sex:"man", company:"huawei"})
（2）Es端检索验证
[root@5b9dbaaa148a test_log] { "took" : 4, "timed_out" : false, "_shards" : { "total" : 8, "successful" : 8, "failed" : 0 }, "hits" : { "total" : 2, "max_score" : 1.0, "hits" : [ { "_index" : "zhang_index", "_type" : "col_02", "_id" : "577b7d8ceb8e3dc2d1db12a9", "_score" : 1.0, "_source" : { "company" : "huawei", "name" : "renzhengfei", "birth" : "1954-03-21", "sex" : "man" }
}, { "_index" : "zhang_index", "_type" : "col_02", "_id" : "577b7d4aeb8e3dc2d1db12a7", "_score" : 1.0, "_source" : { "company" : "chuizi", "name" : "laoluo", "birth" : "1964-03-21", "sex" : "man" }
} ]
}
}
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6、 ES与MongoDB Update更新操作的同步验证
（1）MongoDB的更新update操作
rs0:PRIMARY> db.col_02.update({'name':'laoluo'}, {$set:{'name':'luoyonghao'}})
WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 })
rs0:PRIMARY>
rs0:PRIMARY> db.col_02.find().pretty()
{ "_id" : ObjectId("577b7d4aeb8e3dc2d1db12a7"), "name" : "luoyonghao", "birth" : "1964-03-21", "sex" : "man", "company" : "chuizi" }
{ "_id" : ObjectId("577b7d8ceb8e3dc2d1db12a9"), "name" : "renzhengfei", "birth" : "1954-03-21", "sex" : "man", "company" : "huawei" }
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（2）Es端检索更新后结果
[root@5b9dbaaa148a test_log] { "took" : 1, "timed_out" : false, "_shards" : { "total" : 8, "successful" : 8, "failed" : 0 }, "hits" : { "total" : 2, "max_score" : 1.0, "hits" : [ { "_index" : "zhang_index", "_type" : "col_02", "_id" : "577b7d8ceb8e3dc2d1db12a9", "_score" : 1.0, "_source" : { "company" : "huawei", "name" : "renzhengfei", "birth" : "1954-03-21", "sex" : "man" }
}, { "_index" : "zhang_index", "_type" : "col_02", "_id" : "577b7d4aeb8e3dc2d1db12a7", "_score" : 1.0, "_source" : { "company" : "chuizi", "name" : "luoyonghao", "birth" : "1964-03-21", "sex" : "man" }
} ]
}
}
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7、 ES与MongoDB delete删除操作的同步验证
（1） MongoDB的删除delete操作
rs0:PRIMARY> db.col_02.remove({'name':'renzhengfei'})
WriteResult({ "nRemoved" : 1 })
rs0:PRIMARY> db.col_02.find()
{ "_id" : ObjectId("577b7d4aeb8e3dc2d1db12a7"), "name" : "luoyonghao", "birth" : "1964-03-21", "sex" : "man", "company" : "chuizi" }
rs0:PRIMARY> db.col_02.find().pretty()
{ "_id" : ObjectId("577b7d4aeb8e3dc2d1db12a7"), "name" : "luoyonghao", "birth" : "1964-03-21", "sex" : "man", "company" : "chuizi" }
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（2）ES端检索删除后结果
结果表明，MongoDB删除的内容，ES端已经同步删除。
[root@5b9dbaaa148a test_log] { "took" : 2, "timed_out" : false, "_shards" : { "total" : 8, "successful" : 8, "failed" : 0 }, "hits" : { "total" : 1, "max_score" : 1.0, "hits" : [ { "_index" : "zhang_index", "_type" : "col_02", "_id" : "577b7d4aeb8e3dc2d1db12a7", "_score" : 1.0, "_source" : { "company" : "chuizi", "name" : "luoyonghao", "birth" : "1964-03-21", "sex" : "man" }
} ]
}
}
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参见详细介绍：
Mongo与ES同步的5种方式：
常见Bug：
How to setup a MongoDB replica set for the connector？
2016年7月6日 23:22 思于家中床前
作者：铭毅天下
转载请标明出处，原文地址：
http://blog.csdn.net/laoyang360/article/details/51842822
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