How to build MongoDB Replica Sets
This article is to share with you about how to build MongoDB Replica Sets, the editor thinks it is very practical, so I share it with you to learn. I hope you can get something after reading this article.
No matter what language we learn, being able to type a HelloWorld becomes our first step. It is equivalent to the HelloWorld built by MongoDBReplicaSets.
How to build MongoDBReplicaSets
The following is to call getlasterror after doing an operation on ReplicaSets to synchronize the write operation to at least 3 machines before returning.
Db.runCommand ({getlasterror:1,w:3})
Start building and start the three mongodserver:
Mongod--replSetprod--port27017--dbpath/data/node1
Mongod--replSetprod--port27027--dbpath/data/node2
Mongod--replSetprod--port27037--dbpath/data/node3
Perform one of the mongod to complete the relevant configuration
Replica_config= {_ id:'prod',members: [
{_ id:0,host:'localhost:27017'}
{_ id:1,host:'localhost:27027'}
{_ id:2,host:'localhost:27037'}]}
# Nowinitiatethereplica_config
Rs.initiate (replica_config)
Ruby client code:
#! / usr/bin/envruby
Require'mongo'
Begin
How to build MongoDBReplicaSets
@ 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.timesdo
Sleep0.5
Begin
Product=@collection.find_one "code" = > "023XX3"
Puts "FoundBook:" + product ["name"]
RescueException= > e
Putse.message
Next
End
The above is how to build MongoDB Replica Sets, and the editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.
