MONGODB Replication Set Deployment documentation

First, installation environment:
Version: MongoDB Server version:3.4.4
Install Source package: mongodb-linux-x86_64-enterprise-rhel62-3.4.4.tgz
System environment: CentOS Release 6.6 (Final)
Node ip1:172.16.88.195
Node ip2:172.16.88.196
Node ip3:172.16.88.190
Second, node configuration
Operate on three nodes, respectively:
1. Into the installation directory/usr/local/decompression source package:

TAR–ZXVF MONGODB-LINUX-X86_64-ENTERPRISE-RHEL62-3.4.4.TGZMV mongodb-linux-x86_64-enterprise-rhel62-3.4.4 MongoDB

#mkdir-P/home/mongodb/data/
#mkdir –p/home/mongodb/logs
Node 1 configuration:

Vi/etc/mongodb.conf

#数据文件存放目录
DBPath =/opt/mongodb/data/
#日志文件存放目录
LogPath =/opt/mongodb/logs/mongodb.logs
#端口
#bind_ip = 172.16.88.195 Default Listener local, comment listens to all
Port = 27027
#以守护程序的方式启用, which runs in the background
Fork = True
Pidfilepath =/opt/mongodb/27027.pid
#是否禁止http接口, which is the 28017 port-enabled service. False by default, supports
#nohttpinterface = True
Logappend = True
Oplogsize = 200
#directoryperdb = True
Replset = Test
Httpinterface = True
Rest = True
Replindexprefetch = _id_only
Node 2 configuration:

Vi/etc/mongodb.conf

#数据文件存放目录
DBPath =/home/mongodb/data/
#日志文件存放目录
LogPath =/home/mongodb/logs/mongodb.logs
#端口
Port = 27027
#bind_ip = 172.16.88.196 Default Listener local, comment listens to all
#以守护程序的方式启用, which runs in the background
Fork = True
Pidfilepath =/home/mongodb/27027.pid
#是否禁止http接口, which is the 28017 port-enabled service. False by default, supports
#nohttpinterface = True
Logappend = True
Oplogsize = 200
#directoryperdb = True
Replset = Test
Httpinterface = True
Node 3 configuration:

Vi/etc/mongodb.conf

#数据文件存放目录
DBPath =/home/mongodb/data/
#日志文件存放目录
LogPath =/home/mongodb/logs/mongodb.logs
#端口
#bind_ip = 172.16.88.190 Default Listener local, comment listens to all
Port = 27027
#以守护程序的方式启用, which runs in the background
Fork = True
#是否禁止http接口, which is the 28017 port-enabled service. False by default, supports
#nohttpinterface = True
Httpinterface = True
Pidfilepath =/home/mongodb/27027.pid
Logappend = True
Oplogsize = 200
#directoryperdb = True
Replset = Test
Rest = True
Replindexprefetch = _id_only

Start Mongodb:/usr/localmongodb/bin/mongod-f/etc/mongodb.conf on each node
Login:/usr/localmongodb/bin/mongo 172.16.88.190:27027/admin

Config = {

"_id": "Test",

members:[

{"_id": 0,host: "172.16.88.196:27027"},

{"_id": 1,host: "172.16.88.190:27027"},

{"_id": 2,host: "172.16.88.195:27027"}]

}

Rs.initiate (config); # # #初始化集群
--View Replica set members
Config.members
Master node Create library table:
Test:primary> Db.stu.insert ({"Name": "Zhangsan", "Age": 23})
Secondary node synchronization:
Test:secondary> Rs.slaveok ()
test:secondary> Use test
Switched to DB test
Test:secondary> Show Collections
Stu
Stop a MongoDB and view the election situation
Rs.status ()
Since the default from the node is not allowed to read and write, to solve this problem, there are two ways

1. Executing Rs.slaveok () on the slave node
2. or execute Db.getmongo () on the master node. Setslaveok ()
   Third, user creation
   1. Create Admin user admin:
   Db.createuser ({
   User: "Admin",
   PWD: "123456",
   Roles
   [
   {
   Role: "Useradminanydatabase",
   DB: "Admin"
   },
   {
   Role: "Readwriteanydatabase",
   DB: "Admin"
   },
   {
   Role: "Dbadminanydatabase",
   DB: "Admin"
   },
   {
   Role: "Root",
   DB: "Admin"
   }
   ]})

2. Create a DevOps user (read and write access):
Db.createuser (
{
User: "DevOps",
PWD: "2wsx#edc",
Roles: [{role: ' Readwriteanydatabase ', db: ' admin '}]
}
);

Third, AUTH certification:
1. Create an authentication file
OpenSSL rand-base64 >/home/mongodb/keyfile.data
Copy the/home/mongodb/keyfile.data to the other two-node directory:
Scp/home/mongodb/keyfile.data [email protected] $ip:/home/mongodb/
Modify its permissions to: chmod 600/home/mongodb/keyfile.data
2. Modify the configuration
In the configuration file for each node, add:
KeyFile =/home/mongodb/keyfile.data
Auth = True
Restart MongoDB
/usr/localmongodb/bin/mongod-f/etc/mongodb.conf
3. Login Authorization
Login to MongoDB
/usr/localmongodb/bin/mongo 172.16.88.190:27027/admin
Authorization: Db.auth ("admin", "123456")
Db.auth ("DevOps", "2wsx#edc")
Quit Quit ();
Login with Admin User:
/usr/localmongodb/bin/mongo 172.16.88.190:27027/admin-u admin–p 123456

Sign in with a DevOps user:
/usr/localmongodb/bin/mongo 172.16.88.190:27027/admin-u devops–p 2wsx#edc
Replication Set Authentication Complete
Note: You need to perform the operation from the node first: Rs.slaveok ()
4. Configure the hosts:
Vi/etc/hosts
172.16.88.195 mongo.slave0.56xyl.com
172.16.88.196 mongo.slave1.56xyl.com
172.16.88.190 mongo.slave2.56xyl.com

MongoDB replication Set Deployment documentation