mongodb replication lag

CopyMongoDB replication is important, especially now that the storage engine does not support click Persistence. Not only can replication be used to deal with failover, data integration, but also read extensions, hot backups, or data sources as

1, monitoring plug-in downloadMongodb plug-ins are: git://github.com/mzupan/nagios-plugin-mongodb.git, just started I did not install the gitpub Environment here, Find the user grassroots help download. Then uploaded to the csdn Resources page, the

I. Basic concepts of replica setsReplica set (replica set)MongoDB's replica set is a Mongod process instance cluster where data is replicated to each other in the cluster and is automatically failover.MongoDB's database replication adds redundancy,

I. MongoDB replica set introduction MongoDB's replication mechanism is mainly divided into two types: Master-Slave (Master-Slave replication), which is no longer recommended to use the new features developed by ReplicaSet (replica set) MongoDB in

In each MongoDB (version 3.2.9) instance, there is a local database that stores information and local data for Replication processes. The local database is characterized by the fact that data and collections located in the local database are not

MongoDB Replica Set Overviewtake a piece from the official MongoDB document: http://docs.mongodb.org/manual/core/replication-introduction/650) this.width=650; "Src=" http://images.cnitblog.com/blog/288950/201308/11144626- E95b0689174d4727974d39c02fd5

In each MongoDB instance, there is a local database that stores information about the Replication process and local data. The local database is characterized by the fact that data and collections located in the local database are not copied to other

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1. Structure and principle of replica set The replica set consists of three nodes: the master node, the slave node, and the quorum node.The master node is responsible for processing client requests, reading and writing data, and recording the

MongoDB's replication set has the function of automatically tolerating partial node downtime, which triggers an election-related process when the replication set is in trouble, and automatically switches the master-slave node.Each replica set member