Linux (Ubuntu) environment construction, basic framework, summary (mongo replica set, redis…)

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The mongo replica set is written separately:

1. Create the corresponding conf file

/etc/mongos/mongod1.conf

/etc/mongos/mongod2.conf

/etc/mongos/mongod3.conf

2. Create corresponding data files

/mongodata/data1

/mongodata/data2

/mongodata/data3

3. Start mongo as a replica set (Stop adding –shutdown)

Mongod–f /etc/mongos/mongod1.conf –replSetrs1

Mongod–f /etc/mongos/mongod2.conf –replSetrs1

Mongod–f /etc/mongos/mongod3.conf –replSetrs1

4. Log in to one (you hope it is the primary one)

mongo 192.168.1.226:27017

User admin

cOnfig={

“_id” : “rs1”,

“members” : [

“_id” : 0,

“host” : “192.168.1.226:27017”

               },

“_id” : 1,

“host” : “192.168.1.226:27017”

               },

“_id” : 2,

“host” : “192.168.1.226:27017”

]

}

rs.initiate(config)

rs.status()//Check the situation

Arbitration node Configuration example : “host” : “192.168.1.226:27017”, arbiterOnly: true; The arbiter node can be used as long as you Even if the machine is down, there are still two available