MongoDB Replica Sets 简明搭建教程
无论我们学习什么语言,能打出一个Hello World成为了我们的第一步。而今天这个例子,相当于是MongoDB Replica Sets搭建的Hello World。代码如下:
下面是在Replica Sets上做操作后调用getlasterror使写操作同步到至少3台机器后才返回。
db.runCommand( { getlasterror : 1 , w : 3 } )
开始搭建,启动三个mongod server:- mongod --replSet prod --port 27017 --dbpath /data/node1
- mongod --replSet prod --port 27027 --dbpath /data/node2
- mongod --replSet prod --port 27037 --dbpath /data/node3
- 进行其中一个mongod,完成相关的配置
- replica_config = {_id: 'prod', members: [
- {_id: 0, host: 'localhost:27017'},
- {_id: 1, host: 'localhost:27027'},
- {_id: 2, host: 'localhost:27037'}]}
- #Now initiate the replica_config
- rs.initiate(replica_config);
复制代码 ruby客户端代码:- #!/usr/bin/env ruby
- require 'mongo'
- begin
- @connection = Mongo::Connection.multi([
- ['localhost',27017],
- ['localhost',27027],
- ['localhost',27037]])
- @collection = @connection.db("sales").collection("products")
- product = { "name" => "Refactoring",
- "code" => "023XX3",
- "type" => "book",
- "in_stock" => 100}
- @collection.insert(product)
- 100.times do
- sleep 0.5
- begin
- product = @collection.find_one "code" => "023XX3"
- puts "Found Book: "+product["name"]
- rescue Exception => e
- puts e.message
- next
- end
- end
- end
复制代码 原文链接:《Replicas Sets In MongoDB》
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