> For the complete documentation index, see [llms.txt](https://mongo.docs.irybd.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://mongo.docs.irybd.com/replication/baseconfig.md).

# 副本: 副本集集群基础配置

## 环境介绍

| 系统版本                                 | 服务器ip地址      | MongoDB版本                              | 端口号   |
| ------------------------------------ | ------------ | -------------------------------------- | ----- |
| CentOS Linux release 7.6.1810 (Core) | 192.168.0.92 | mongodb-linux-x86\_64-rhel62-3.6.5.tgz | 27017 |
| CentOS Linux release 7.6.1810 (Core) | 192.168.0.93 | mongodb-linux-x86\_64-rhel62-3.6.5.tgz | 27017 |
| CentOS Linux release 7.6.1810 (Core) | 192.168.0.94 | mongodb-linux-x86\_64-rhel62-3.6.5.tgz | 27017 |

## 正式开始

本实践其中有使用ansible工具便于快速部署。

### 1、安装MongoDB

```
$ wget https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-rhel70-3.2.22.tgz
$ ansible -i inventory mongocluster -m copy -a 'src=/Users/jinxiaozhang/mongodb-linux-x86_64-rhel62-3.6.5.tgz dest=/usr/local/'
$ ansible -i inventory mongocluster -m shell -a 'tar zxvf /usr/local/mongodb-linux-x86_64-rhel62-3.6.5.tgz -C /usr/local/
```

### 2、创建我们所需要的目录

```
$ ansible -i inventory mongocluster -m shell -a 'mkdir /usr/local/mongodb-linux-x86_64-rhel70-3.2.22/data' 
$ ansible -i inventory mongocluster -m shell -a 'mkdir /usr/local/mongodb-linux-x86_64-rhel70-3.2.22/shard1' 
$ ansible -i inventory mongocluster -m shell -a 'mkdir /usr/local/mongodb-linux-x86_64-rhel70-3.2.22/logs' 
$ ansible -i inventory mongocluster -m shell -a 'mkdir /usr/local/mongodb-linux-x86_64-rhel70-3.2.22/config' 
$ ansible -i inventory mongocluster -m shell -a 'mkdir /usr/local/mongodb-linux-x86_64-rhel70-3.2.22/key'
```

### 3、创建配置文件

```
[root@node92 mongodb-linux-x86_64-rhel70-3.2.22]# cat shard1.conf
systemLog:
  destination: file
  path: "/usr/local/mongodb-linux-x86_64-rhel70-3.2.22/logs/shard1.log"
  logAppend: true
storage:
  dbPath:   /usr/local/mongodb-linux-x86_64-rhel70-3.2.22/data/shard1
  engine: wiredTiger
#  oplogSize: 51200
processManagement:
  fork: true
net:
  bindIp: 192.168.0.92 #其他两台机器分别改为192.168.0.93 ; 192.168.0.94
  port: 27017
replication:
  replSetName:  shard1
```

### 4、启动服务

```
[root@node92 mongodb-linux-x86_64-rhel70-3.2.22]# bin/mongod -f config/shard1.conf
[root@node93 mongodb-linux-x86_64-rhel70-3.2.22]# bin/mongod -f config/shard1.conf
[root@node94 mongodb-linux-x86_64-rhel70-3.2.22]# bin/mongod -f config/shard1.conf
```

### 5、初始化副本集群

```
[root@node92 mongodb-linux-x86_64-rhel70-3.2.22]# bin/mongo 192.168.0.92:27017
> rs.initiate() #初始化一个副本集群
```

### 6、向副本集群添加节点成员

```
[root@node92 mongodb-linux-x86_64-rhel70-3.2.22]# bin/mongo 192.168.0.92:27017
> rs.add("192.168.0.93:27017")
> rs.add("192.168.0.94:27017")
```

### 7、查看副本集群状态

```
shard1:PRIMARY> rs.status()
{
    "set" : "shard1",
    "date" : ISODate("2019-04-29T06:48:45.798Z"),
    "myState" : 1,
    "term" : NumberLong(5),
    "heartbeatIntervalMillis" : NumberLong(2000),
    "members" : [
        {
            "_id" : 0,
            "name" : "192.168.0.92:27017",
            "health" : 1,
            "state" : 2,
            "stateStr" : "SECONDARY",
            "uptime" : 10961,
            "optime" : {
                "ts" : Timestamp(1556509844, 1),
                "t" : NumberLong(5)
            },
            "optimeDate" : ISODate("2019-04-29T03:50:44Z"),
            "lastHeartbeat" : ISODate("2019-04-29T06:48:44.593Z"),
            "lastHeartbeatRecv" : ISODate("2019-04-29T06:48:45.714Z"),
            "pingMs" : NumberLong(1),
            "syncingTo" : "192.168.0.94:27017",
            "configVersion" : 3
        },
        {
            "_id" : 1,
            "name" : "192.168.0.93:27017",
            "health" : 1,
            "state" : 1,
            "stateStr" : "PRIMARY",
            "uptime" : 10988,
            "optime" : {
                "ts" : Timestamp(1556509844, 1),
                "t" : NumberLong(5)
            },
            "optimeDate" : ISODate("2019-04-29T03:50:44Z"),
            "electionTime" : Timestamp(1556509548, 1),
            "electionDate" : ISODate("2019-04-29T03:45:48Z"),
            "configVersion" : 3,
            "self" : true
        },
        {
            "_id" : 2,
            "name" : "192.168.0.94:27017",
            "health" : 1,
            "state" : 2,
            "stateStr" : "SECONDARY",
            "uptime" : 10988,
            "optime" : {
                "ts" : Timestamp(1556509844, 1),
                "t" : NumberLong(5)
            },
            "optimeDate" : ISODate("2019-04-29T03:50:44Z"),
            "lastHeartbeat" : ISODate("2019-04-29T06:48:45.700Z"),
            "lastHeartbeatRecv" : ISODate("2019-04-29T06:48:44.725Z"),
            "pingMs" : NumberLong(0),
            "syncingTo" : "192.168.0.93:27017",
            "configVersion" : 3
        }
    ],
    "ok" : 1
}
```