配置mongodb 复制集3.2

àì夳堔傛蜴生んèń 2022-09-21 13:04 120阅读 0赞

touch /etc/yum.repos.d/mongodb-org-3.2.repo
    
    vim /etc/yum.repos.d/mongodb-org-3.2.repo

2. 增加内容

[mongodb-org-3.2]
    name=MongoDB Repository
    baseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/3.2/x86_64/
    gpgcheck=1
    enabled=1
    gpgkey=https://www.mongodb.org/static/pgp/server-3.2.asc

3.安装

sudo yum install -y mongodb-org

4.将其他的节点按照上面，进行安装mongodb

安装完成后，都关闭mongodb：

sudo service mongod stop

5. 在每一个mongodb的节点，修改hosts

节点：192.168.220.105  mongo0.example.com

节点：192.168.220.106 mongo1.example.com

vim /etc/hosts

192.168.220.105：

127.0.0.1   localhost mongo0.example.com
    192.168.220.105 mongo0.example.com
    192.168.220.106 mongo1.example.com

192.168.220.106：

127.0.0.1   localhost mongo1.example.com
    192.168.220.105 mongo0.example.com
    192.168.220.106 mongo1.example.com

6. 在每一个mongodb的节点，修改hostname

节点：192.168.220.105  mongo0.example.com

节点：192.168.220.106 mongo1.example.com

192.168.220.105:

sudo hostname mongo0.example.com
    vim   /etc/hostname

填写内容：

mongo0.example.com

192.168.220.106:

sudo hostname mongo1.example.com
    vim   /etc/hostname

填写内容：

mongo1.example.com

7.修改mongodb的配置

vim /etc/mongod.conf

进行的修改为： 把bingIp注释掉，这一行只让本地访问

net:
      port: 27017
    #  bindIp: 127.0.0.1  # Listen to local interface only, comment to listen on all interfaces.

添加复制集配置：

replication:
       replSetName: rs0

保存文件后，重启linxu

8.现在有两台linux，现在开始配置，注意，只能进入一台mongodb，其他的mongdb不要配置，启动就好。

在mongo0中：

mongo

log如下：

[root@mongo0 ~]# mongo
    MongoDB shell version: 3.2.7
    connecting to: test
    Server has startup warnings: 
    2016-06-20T14:10:48.876+0800 I CONTROL  [initandlisten] 
    2016-06-20T14:10:48.876+0800 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
    2016-06-20T14:10:48.876+0800 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
    2016-06-20T14:10:48.876+0800 I CONTROL  [initandlisten] 
    2016-06-20T14:10:48.876+0800 I CONTROL  [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
    2016-06-20T14:10:48.876+0800 I CONTROL  [initandlisten] **        We suggest setting it to 'never'
    2016-06-20T14:10:48.876+0800 I CONTROL  [initandlisten] 
    2016-06-20T14:10:48.876+0800 I CONTROL  [initandlisten] ** WARNING: soft rlimits too low. rlimits set to 1024 processes, 64000 files. Number of processes should be at least 32000 : 0.5 times number of files.
    2016-06-20T14:10:48.876+0800 I CONTROL  [initandlisten]

然后：

rs.initiate()

log如下：

> rs.initiate()
    {
    	"info2" : "no configuration specified. Using a default configuration for the set",
    	"me" : "mongo0.example.com:27017",
    	"ok" : 1
    }
    rs0:OTHER>

增加节点：

rs0:OTHER> rs.add("mongo1.example.com:27017");
    { "ok" : 1 }

rs.config() 查看配置，log如下：

rs0:PRIMARY> rs.config();
    {
    	"_id" : "rs0",
    	"version" : 2,
    	"protocolVersion" : NumberLong(1),
    	"members" : [
    		{
    			"_id" : 0,
    			"host" : "mongo0.example.com:27017",
    			"arbiterOnly" : false,
    			"buildIndexes" : true,
    			"hidden" : false,
    			"priority" : 1,
    			"tags" : {
    				
    			},
    			"slaveDelay" : NumberLong(0),
    			"votes" : 1
    		},
    		{
    			"_id" : 1,
    			"host" : "mongo1.example.com:27017",
    			"arbiterOnly" : false,
    			"buildIndexes" : true,
    			"hidden" : false,
    			"priority" : 1,
    			"tags" : {
    				
    			},
    			"slaveDelay" : NumberLong(0),
    			"votes" : 1
    		}
    	],
    	"settings" : {
    		"chainingAllowed" : true,
    		"heartbeatIntervalMillis" : 2000,
    		"heartbeatTimeoutSecs" : 10,
    		"electionTimeoutMillis" : 10000,
    		"getLastErrorModes" : {
    			
    		},
    		"getLastErrorDefaults" : {
    			"w" : 1,
    			"wtimeout" : 0
    		},
    		"replicaSetId" : ObjectId("5767896cd1595b8f30b7cd4a")
    	}
    }

查看状态：

rs0:PRIMARY> rs.status()

日志：

rs0:PRIMARY> rs.status()
    {
    	"set" : "rs0",
    	"date" : ISODate("2016-06-20T06:14:17.377Z"),
    	"myState" : 1,
    	"term" : NumberLong(1),
    	"heartbeatIntervalMillis" : NumberLong(2000),
    	"members" : [
    		{
    			"_id" : 0,
    			"name" : "mongo0.example.com:27017",
    			"health" : 1,
    			"state" : 1,
    			"stateStr" : "PRIMARY",
    			"uptime" : 92,
    			"optime" : {
    				"ts" : Timestamp(1466403201, 1),
    				"t" : NumberLong(1)
    			},
    			"optimeDate" : ISODate("2016-06-20T06:13:21Z"),
    			"infoMessage" : "could not find member to sync from",
    			"electionTime" : Timestamp(1466403181, 1),
    			"electionDate" : ISODate("2016-06-20T06:13:01Z"),
    			"configVersion" : 2,
    			"self" : true
    		},
    		{
    			"_id" : 1,
    			"name" : "mongo1.example.com:27017",
    			"health" : 1,
    			"state" : 2,
    			"stateStr" : "SECONDARY",
    			"uptime" : 55,
    			"optime" : {
    				"ts" : Timestamp(1466403201, 1),
    				"t" : NumberLong(1)
    			},
    			"optimeDate" : ISODate("2016-06-20T06:13:21Z"),
    			"lastHeartbeat" : ISODate("2016-06-20T06:14:15.784Z"),
    			"lastHeartbeatRecv" : ISODate("2016-06-20T06:14:14.010Z"),
    			"pingMs" : NumberLong(0),
    			"configVersion" : 2
    		}
    	],
    	"ok" : 1
    }

在shell 下面链接：

mongo --host rs0/mongo0.example.com:27017,mongo1.example.com:27017 test

在php中连接：

'dsn' => 'mongodb://192.168.220.105:27017/erp,192.168.220.106:27017/erp?replicaSet=rs0&readPreference=primaryPreferred',

备份：

./mongodump  -h 192.168.220.60:27500 -d erp -o /terry/erp

恢复：（在复制集中）。

./mongorestore  -h 192.168.220.105:27017 -d erp  /terry/erp

其他：

1. 删除mongodb的库，重新启动

mv /var/lib/mongo /var/lib/mongo1
    mkdir /var/lib/mongo
    chown mongod:mongod /var/lib/mongo

2.删除复制集节点：