配置mongodb 复制集3.2

1.

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

2. 增加内容

[mongodb-org-3.2]name=MongoDB Repositorybaseurl=https://repo.mongodb.org/yum/redhat/$releasever/mongodb-org/3.2/x86_64/gpgcheck=1enabled=1gpgkey=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.com192.168.220.105 mongo0.example.com192.168.220.106 mongo1.example.com

192.168.220.106：

127.0.0.1   localhost mongo1.example.com192.168.220.105 mongo0.example.com192.168.220.106 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.comvim   /etc/hostname

填写内容：

mongo0.example.com

192.168.220.106:

sudo hostname mongo1.example.comvim   /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 ~]# mongoMongoDB shell version: 3.2.7connecting to: testServer 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/mongo1mkdir /var/lib/mongochown mongod:mongod /var/lib/mongo

2.删除复制集节点：

rs.remove("mongo0.example.com")

3.在副本集的副节点读数据：

db.setSlaveOk()

参考：

https://gist.github.com/leommoore/309de7c0042ed697ee84

https://docs.mongodb.com/manual/tutorial/install-mongodb-on-red-hat/

https://docs.mongodb.com/manual/tutorial/deploy-replica-set/

https://docs.mongodb.com/manual/reference/configuration-options/