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How does one modify the Oracle replica set in Linux ?, Linuxoracle code The Oracle replica set installed on the virtual machine is different from the replica set installed on Windows. Refer to the online documents to modify the replica set on the server, and make a summary and record here. 1. log on to the Oracle us

The following figure shows the mongdb cluster architecture to be built. Create the first replset folder ------------------ create directory mkdir-P/data/replset_sharding/replset1/r0mkdir-P/data/replset_sharding/replset1/r1mkdir-P /data/replset_sharding/replset1/r2mkdir-P/data/replset_sharding/replset1/log can be changed to the following one (this is for the convenience of viewing logs, view it directly in the command line output)/apps/Mongo/Bi N/mongod -- dbpath/data/replset_sharding/replset1/R0

2.33mongodb Replica Set IntroductionEarlier versions used Master-slave, a master one from and MySQL similar, but slave in this architecture is read-only, when the main library down, from the library can not automatically switch to primaryThe Master-slave mode has now been phased out, changed to a replica set, this mode has a master (primary), and multiple Slave (secondary), read-only. Support to set weights

=/export/log/mongconfigsvr.logLogappend=truemaxconns=1000Pidfilepath=/var/run/mongconfigsvr.pidHttpinterface=true Start Configsvrmkdir-pv/export/log/cd/export/log/Touch Mongconfigsvr.log /opt/mongodb3.2.6/bin/mongod-f/opt/mongodb3.2.6/configsvr.confNetstat-tlnup 1111 Port Boot 6. Configure routing on each machineCreate a configuration file for MONGOs Vim mongos.confPort = 2222maxconns=1000Logpath=/var/log/mongos.logLogappend=trueLogrotate=renamePidfilepath=/var/run/mongos.pidFork=trueHttpinterfa

Tags: dependent markdown asm UIL pen img Relationship Water SRCin my previous cognition, once a system is officially on-line, most of the servers will not be migrated easily, especially those involving multiple related applications involving multiple hardware servers, because this migration will be reaching. However, there is still such a situation, as I am mainly responsible for the past few days, is a system of all the server migration part of the machine migration, and a part of others are re

Tags: for workspace port bin exe AST configuration common IATCreate a DirectoryMkdir-p/DATA/R0/DATA/R1/DATA/R2Declaring an instance./bin/mongod--port 27017--dbpath/home/workspace/data/r0/--smallfiles--replset RSA--fork--logpath/home/workspace/ Logs/mongo0.log./bin/mongod--port 27018--dbpath/home/workspace/data/r1/--smallfiles--replset RSA--fork--logpath/home/workspace/ Logs/mongo1.log./bin/mongod--port 27019--dbpath/home/workspace/data/r2/--smallfiles--replset RSA--fork--logpath/home/workspace/

I. node types Standard: a regular node that stores a complete copy of data and participates in voting. It may become an active node. Passive: stores complete data copies and participates in voting. It cannot be an active node. Arbiter: An arbitration node that only participates in voting and does not receive copied data. It cannot become an active node. Ii. parameter description-- Dbpath: Data File Path-- Logpath: Log File Path-- Port port number. The default value is 27017. This port number is

One: Concept The popular copy set is to use multiple machines for the same data asynchronous synchronization, so that multiple machines have multiple copies of the same data, and when the main library when it is off without user intervention, automatically switch to other backup server Master library. The replica server can also be used as a read-only server to achieve read-write separation and increase load. Second: Experimental en

Tags: Mongodb big Data cloud computingThe following operations are mainly divided into two sections: Modify Node State Mainly include: Demote the primary node to the secondary nodeFreeze secondary nodesForcing secondary nodes into maintenance mode2. Modify the configuration of the replica set Adding nodesDelete a nodeTo set the secondary node as a deferred backup nodeTo set the secondary node as a hidden nodeReplace the current

Mongodb master-slave configuration: replica set, mongodbreplica1. Replica setThe master-slave deployment of mongodb, usually in the replica set mode. Replica set is a group of multiple mongod instances, including one primary and multiple slave databases. The advantage of this primary multi-slave mode is that mongodb se

Actual Combat MongoDB Master-slave MongoDB supports asynchronous data replication between different services to implement failover (failover, failover, failback) and redundancy (data redundancy). At the same time, only one service node (primary or master) supports writing. MongoDB supports two modes of replication: Master/slave, master-slave replication, roles include Master and Slave. Replica set, replica