1.环境：
单台服务器上开启四个mongodb实例来实现mongodb的Replica Set副本集方式的集群搭建
2.配置文件：
master主实例配置文件：
[[email protected] ~]# cat /usr/local/mongodb/mongod.cnf
logpath=/data/mongodb-master/logs/mongodb.log
logappend = true
#fork and run in background
fork = true
port = 27017
dbpath=/data/mongodb-master/data
#location of pidfile
pidfilepath=/data/mongodb-master/mongod.pid
auth = true
keyFile = /tmp/mongo-keyfile
nohttpinterface=true
replSet=shard1
slave1实例配置文件：
[[email protected] ~]# cat /usr/local/mongodb/mongod1.cnf
logpath=/data/mongodb-slave/logs/mongodb.log
logappend = true
#fork and run in background
fork = true
port = 27018
dbpath=/data/mongodb-slave/data
#location of pidfile
pidfilepath=/data/mongodb-slave/mongod.pid
auth = true
keyFile = /tmp/mongo-keyfile
nohttpinterface=true
replSet=shard1
slave2实例配置文件：
[[email protected] ~]# cat /usr/local/mongodb/mongod2.cnf
logpath=/data/mongodb-slave1/logs/mongodb.log
logappend = true
#fork and run in background
fork = true
port = 27019
dbpath=/data/mongodb-slave1/data
#location of pidfile
pidfilepath=/data/mongodb-slave1/mongod.pid
auth = true
keyFile = /tmp/mongo-keyfile
nohttpinterface=true
replSet=shard1
arbiter冲裁节点实例部署：
[[email protected] ~]# cat /usr/local/mongodb/arbiter.cnf
logpath=/data/mongodb-arbiter/logs/mongodb.log
logappend = true
#fork and run in background
fork = true
port = 27020
dbpath=/data/mongodb-arbiter/data
#location of pidfile
pidfilepath=/data/mongodb-arbiter/mongod.pid
keyFile = /tmp/mongo-keyfile
nohttpinterface=true
replSet=shard1
3.单实例mongodb的启动脚本：
[[email protected] data]# cat /etc/init.d/mongod
#!/bin/sh
## chkconfig: 2345 66 40
source /etc/profile
CONFIG=/usr/local/mongodb/mongod.cnf
PROGRAM=/usr/local/mongodb/bin/mongod
MONGOPID=`ps -ef | grep ‘mongod --config‘ | grep -v grep | awk ‘{print $2}‘`
test -x $PROGRAM || exit 0
case "$1" in
start)
echo "Starting MongoDB Server..."
$PROGRAM --config $CONFIG &
;;
stop)
echo "Stopping MongoDB Server..."
if [ ! -z "$MONGOPID" ]; then
kill -15 $MONGOPID
fi
;;
status)
if [ -z "$MONGOPID" ]; then
echo "MongoDB is not running!"
else
echo "MongoDB is running!("$MONGOPID")"
fi
;;
restart)
echo "Shutting down MongoDB Server..."
if [ ! -z "$MONGOPID" ]; then
kill -15 $MONGOPID
fi
echo "Starting MongoDB..."
$PROGRAM --config $CONFIG &
;;
*)
log_success_msg "Usage:/etc/init.d/mongod {start|stop|status|restart}"
exit 1
esac
exit 0
4.启动mongodb实例：
[[email protected] data]# ps -ef|grep mongo
root 7226 1 0 13:12 ? 00:00:41 /usr/local/mongodb/bin/mongod --config /usr/local/mongodb/arbiter.cnf
root 11262 1 0 13:54 ? 00:00:29 /usr/local/mongodb/bin/mongod --config /usr/local/mongodb/mongod.cnf
root 13097 1 0 14:22 ? 00:00:19 /usr/local/mongodb/bin/mongod --config /usr/local/mongodb/mongod1.cnf
root 13214 1 0 14:22 ? 00:00:19 /usr/local/mongodb/bin/mongod --config /usr/local/mongodb/mongod2.cnf
5.配置主，备，仲裁节点：
可以通过客户端连接mongodb，也可以直接在三个节点中选择一个连接mongodb。
登陆mongodb-master主实例来配置：
[[email protected] ~]# mongo 127.0.0.1:27017
MongoDB shell version: 3.0.5
connecting to: 127.0.0.1:27017/test
shard1:PRIMARY> use admin;
switched to db admin
> cfg={ _id:"shard1", members:[ {_id:0,host:‘127.0.0.1:27017‘,priority:3}, {_id:1,host:‘127.0.0.1:27018‘,priority:2},
... {_id:2,host:‘127.0.0.1:27019‘,priority:1}, {_id:3,host:‘127.0.0.1:27020‘,arbiterOnly:true} ] };
{
"_id" : "shard1",
"members" : [
{
"_id" : 0,
"host" : "127.0.0.1:27017",
"priority" : 3
},
{
"_id" : 1,
"host" : "127.0.0.1:27018",
"priority" : 2
},
{
"_id" : 2,
"host" : "127.0.0.1:27019",
"priority" : 1
},
{
"_id" : 3,
"host" : "127.0.0.1:27020",
"arbiterOnly" : true
}
]
}
> rs.initiate(cfg); （初始化配置）
{ "ok" : 1 }
shard1:PRIMARY> rs.conf(); （查看配置信息）
{
"_id" : "shard1",
"version" : 1,
"members" : [
{
"_id" : 0,
"host" : "127.0.0.1:27017",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 3,
"tags" : {
},
"slaveDelay" : 0,
"votes" : 1
},
{
"_id" : 1,
"host" : "127.0.0.1:27018",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 2,
"tags" : {
},
"slaveDelay" : 0,
"votes" : 1
},
{
"_id" : 2,
"host" : "127.0.0.1:27019",
"arbiterOnly" : false,
"buildIndexes" : true,
"hidden" : false,
"priority" : 1,
"tags" : {
},
"slaveDelay" : 0,
"votes" : 1
},
{
"_id" : 3,
"host" : "127.0.0.1:27020",
"arbiterOnly" : true,
"buildIndexes" : true,
"hidden" : false,
"priority" : 1,
"tags" : {
},
"slaveDelay" : 0,
"votes" : 1
}
],
"settings" : {
"chainingAllowed" : true,
"heartbeatTimeoutSecs" : 10,
"getLastErrorModes" : {
},
"getLastErrorDefaults" : {
"w" : 1,
"wtimeout" : 0
}
}
}
shard1:OTHER> rs.status() （查看副本集）
{
"set" : "shard1",
"date" : ISODate("2017-09-14T05:23:16.893Z"),
"myState" : 1,
"members" : [
{
"_id" : 0,
"name" : "127.0.0.1:27017",
"health" : 1,
"state" : 1,
"stateStr" : "PRIMARY",
"uptime" : 1117,
"optime" : Timestamp(1505366494, 1),
"optimeDate" : ISODate("2017-09-14T05:21:34Z"),
"electionTime" : Timestamp(1505366495, 1),
"electionDate" : ISODate("2017-09-14T05:21:35Z"),
"configVersion" : 1,
"self" : true
},
{
"_id" : 1,
"name" : "127.0.0.1:27018",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 102,
"optime" : Timestamp(1505366494, 1),
"optimeDate" : ISODate("2017-09-14T05:21:34Z"),
"lastHeartbeat" : ISODate("2017-09-14T05:23:16.113Z"),
"lastHeartbeatRecv" : ISODate("2017-09-14T05:23:16.663Z"),
"pingMs" : 0,
"configVersion" : 1
},
{
"_id" : 2,
"name" : "127.0.0.1:27019",
"health" : 1,
"state" : 2,
"stateStr" : "SECONDARY",
"uptime" : 102,
"optime" : Timestamp(1505366494, 1),
"optimeDate" : ISODate("2017-09-14T05:21:34Z"),
"lastHeartbeat" : ISODate("2017-09-14T05:23:16.127Z"),
"lastHeartbeatRecv" : ISODate("2017-09-14T05:23:16.668Z"),
"pingMs" : 0,
"configVersion" : 1
},
{
"_id" : 3,
"name" : "127.0.0.1:27020",
"health" : 1,
"state" : 7,
"stateStr" : "ARBITER",
"uptime" : 102,
"lastHeartbeat" : ISODate("2017-09-14T05:23:16.055Z"),
"lastHeartbeatRecv" : ISODate("2017-09-14T05:23:16.674Z"),
"pingMs" : 1,
"configVersion" : 1
}
],
"ok" : 1
}
shard1:PRIMARY>
到此处配置成功：
6.测试验证：
参考文档：http://blog.csdn.net/zhang_yanan/article/details/25972693 进行测试验证
在master上创建用户和数据库进行测试验证集群是否成功
db.createUser(
{
user: "root",
pwd: "[email protected]",
roles: [ { role: "root", db: "admin" } ]
}
)
use admin
db.createUser(
... {
... user: "DBA3",
... pwd: "[email protected]",
... roles: [ { role: "readWrite", db: "dbtest001" } ]
... }
... )
也可以安装mongodb客户端软件来操作进行验证集群搭建是否成功
7.部署参考文档:
http://blog.csdn.net/luonanqin/article/details/8497860;
http://suifu.blog.51cto.com/9167728/1853478
http://blog.csdn.net/zhang_yanan/article/details/25972693
MongoDB高可用集群配置的几种方案参考：https://yq.aliyun.com/articles/61516