Replica set installation
1. Decompress the downloaded package:
$tar – ZXVF mongo – Linux – x86_64-3.4.17. TGZ
Links to download address: pan.baidu.com/s/1mmcyWpri… Extraction code: ONFO
2. Change the folder name
$mongo mv – Linux – x86_64-3.4.17. TGZ mongodb27107
3. Create a database directory, configuration file directory, and log directory
$ mkdir -p mongodb27107/data/db
$ mkdir -p mongodb27107/config
4. Create the mongo.conf configuration file
$ touch mongo.conf
Add the following configuration
Dbpath = / home/mvtech/mongodb27017 / data/db / # data storage directory
The logpath = / home/mvtech/mongodb27017 / data/mongo. # log log file directory
Pidfilepath = / home/mvtech/mongodb27017 / data/mongo. Pid # pid port file
Port = 27017 # mongo port
Logappend =true # Write to log file in append mode, default false, overwrite
Fork =true # background run
Journal =true # With logging enabled, MongoDB data operations will be written to the journal folder
OplogSize =2048 #
Smallfiles =true # Use smaller default files
ReplSet = HeatDB # Name of a replica set. The name of the replica set must be the same
Mongodb27107 — mongodb27107 — mongodb27107 — mongodb27107 — Mongodb27107 — Mongodb27107 — Mongodb27107 — Mongodb27107 — Mongodb27107
6. Modify the mongo.conf file in all replication instances to the corresponding path.
7. Start the Mongo instance and go to the bin directory
$mongod – f/home/mvtech/mongodb27017 / config/mongo. Conf
Start other Mongo instances and modify the path by referring to the command above
8. Use MONG to connect to database for service.
$./mongo accesses default port 27017
$./mongo — port 27018 Access non-default ports
9. Initialize the replica set configuration
Replica set member configuration
cfg = {
MongoSet = ‘mongoSet’; mongoSet = ‘mongoSet’
members: [{
_id: 0,
Host: ‘172.18.247.114:27018 ‘, # Replica set member IP: port
Priority: 1 # Replica set member priority
},
{
_id: 1,
Host: ‘172.18.247.113:27017’,
priority: 1
},
{
_id: 2,
Host: ‘172.18.247.113:27018’,
priority: 1
}]
};
Initialize the configuration file
rs.initiate(cfg);
10. Query the replica set status
$ rs.status()
11. Perform the secondary node
$./mongo -host IP – port Specifies the port number
$./mongo -host 172.18.247.114 -port 27018
12. Run the following command on the secondary node: “errmsg” : “not master and slaveOk=false
$ rs.slaveOk();
13. Common operations on replica sets
www.cnblogs.com/ivictor/p/6…