Mongodb副本集
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副本集介绍
也称为Mongdb复制
指在多个服务器上存储数据副本，并实现数据同步
提高数据可用性、安全性，方便数据恢复
MongoDB复制原理
至少需要两个节点。其中一个是主节点，负责处理客户端请求，其余是从节点，负责复制主节点数据
常见搭配方式：一主一从、一主多从
主节点记录所有操作oplog,从节点定期轮询主节点获取这些操作，然后对自己的数据副本执行这些操作，从而保证从节点的数据与主节点一致
副本集实现方式
Master-Slave主从复制
启动一台服务器时加上”-master”参数，作为主节点
启动其他服务器时加上”-slave” 和 “-source” 参数，作为从节点
主从复制的优点
从节点可以提供数据查询，降低主节点的访问压力
由从节点执行备份，避免锁定主节点数据
当主节点故障时，可快速切换到从节点，实现高可用
副本集实现方式
Replica Sets副本集
从1.6版本开始支持，优于之前的replication
支持故障自动切换、自动修复成员节点，降低运维成本
Replica Sets副本集的结构类似高可用集群
配置Replica Sets
230 ls mongodb-linux-x86_64-rhel70-3.6.3.tgz
231 mkdir /usr/local/mongodb
232 tar -zxf mongodb-linux-x86_64-rhel70-3.6.3.tgz
233 cp -r mongodb-linux-x86_64-rhel70-3.6.3/bin/ /usr/local/mongodb
234 cd /usr/local/mongodb
235 mkdir -p etc log data/db
236 ls
237 cd etc
238 ls
239 vim mongodb.conf
240 cd ../
241 ls
242 ./bin/mongod -f /usr/local/mongodb/etc/mongodb.conf
243 netstat -utnlp | grep :27017
244 history
245 netstat -utnlp | grep :27017
246 ./bin/mongod --shutdown -f /usr/local/mongodb/etc/mongodb.conf
247 ls
248 cd etc/
249 ls
250 cat mongodb.conf
251 cd ../
252 ls
253 ./bin/mongod --shutdown -f /usr/local/mongodb/etc/mongodb.conf
254 pwd
255 rm -rf /usr/local/mongodb/data/db/*
256 vim /usr/local/mongodb/etc/mongodb.conf
257 cd ~
258 vim /usr/local/mongodb/etc/mongodb.conf
259 mongod -f /usr/local/mongodb/etc/mongodb.conf
260 tail -2 /etc/profile
261 vim /etc/profile
262 source /etc/profile
263 tail -2 /etc/profile
264 vim /usr/local/mongodb/etc/mongodb.conf
265 mongo --host 192.168.4.51 config={
266 mongo --host 192.168.4.51 --port 27051
267 ss -tunlp | grep mongo
268 mongod -f /usr/local/mongodb/etc/mongodb.conf
269 mongo --host 192.168.4.51 --port 27051
270 ss -tunlp | grep mongo
cat /usr/local/mongodb/etc/mongodb.conf
dbpath=/usr/local/mongodb/data/db
fork=true
logpath=/usr/local/mongodb/log/mongodb.log
logappend=true
bind_ip=192.168.4.51
port=27051
replSet=rs1
vim /etc/profile
export PATH=/usr/local/mongodb/bin:$PATH
. /etc/profile
vim /etc/bashrc
alias mstop='mongod --shutdown -f /usr/local/mongodb/etc/mongodb.conf'
alias mstar='mongod -f /usr/local/mongodb/etc/mongodb.conf'
. /etc/bashrc
[root@host52 ~]# mongo --host 192.168.4.51 --port 27051
MongoDB shell version v3.6.3
connecting to: mongodb://192.168.4.51:27051/
MongoDB server version: 3.6.3
Server has startup warnings:
2018-07-09T09:43:10.836+0800 I CONTROL [initandlisten]
2018-07-09T09:43:10.836+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2018-07-09T09:43:10.836+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2018-07-09T09:43:10.836+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
2018-07-09T09:43:10.836+0800 I CONTROL [initandlisten]
2018-07-09T09:43:10.837+0800 I CONTROL [initandlisten]
2018-07-09T09:43:10.837+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
2018-07-09T09:43:10.837+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2018-07-09T09:43:10.837+0800 I CONTROL [initandlisten]
2018-07-09T09:43:10.837+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
2018-07-09T09:43:10.837+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2018-07-09T09:43:10.837+0800 I CONTROL [initandlisten]
> config={ _id:"rs1", members:[ {_id:0,host:"192.168.4.51:27051"}, {_id:1,host:"192.168.4.52:27052"}, {_id:2,host:"192.168.4.53:27053"} ] };
{
"_id" : "rs1",
"members" : [
{
"_id" : 0,
"host" : "192.168.4.51:27051" ＃"host" : "192.168.4.51:27051"默认在那个主机操作就是主 ＃库，"host" : "192.168.4.51:27051" primary:10 优先级大的为主库
},
{
"_id" : 1,
"host" : "192.168.4.52:27052"
},
{
"_id" : 2,
"host" : "192.168.4.53:27053"
}
]
}
> rs.initiate(config)
{
"ok" : 1,
"operationTime" : Timestamp(1531101753, 1),
"$clusterTime" : {
"clusterTime" : Timestamp(1531101753, 1),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
}
rs1:SECONDARY> rs.isMaster()
{
"hosts" : [
"192.168.4.51:27051",
"192.168.4.52:27052",
"192.168.4.53:27053"
],
"setName" : "rs1",
"setVersion" : 1,
"ismaster" : true,
"secondary" : false,
"primary" : "192.168.4.51:27051",
"me" : "192.168.4.51:27051",
"electionId" : ObjectId("7fffffff0000000000000001"),
"lastWrite" : {
"opTime" : {
"ts" : Timestamp(1531101769, 1),
"t" : NumberLong(1)
},
"lastWriteDate" : ISODate("2018-07-09T02:02:49Z"),
"majorityOpTime" : {
"ts" : Timestamp(1531101769, 1),
"t" : NumberLong(1)
},
"majorityWriteDate" : ISODate("2018-07-09T02:02:49Z")
},
"maxBsonObjectSize" : 16777216,
"maxMessageSizeBytes" : 48000000,
"maxWriteBatchSize" : 100000,
"localTime" : ISODate("2018-07-09T02:03:00.159Z"),
"logicalSessionTimeoutMinutes" : 30,
"minWireVersion" : 0,
"maxWireVersion" : 6,
"readOnly" : false,
"ok" : 1,
"operationTime" : Timestamp(1531101769, 1),
"$clusterTime" : {
"clusterTime" : Timestamp(1531101769, 1),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
}
rs1:PRIMARY> rs.isMaster()
{
"hosts" : [
"192.168.4.51:27051",
"192.168.4.52:27052",
"192.168.4.53:27053"
],
"setName" : "rs1",
"setVersion" : 1,
"ismaster" : true,
"secondary" : false,
"primary" : "192.168.4.51:27051",
"me" : "192.168.4.51:27051",
"electionId" : ObjectId("7fffffff0000000000000001"),
"lastWrite" : {
"opTime" : {
"ts" : Timestamp(1531101836, 1),
"t" : NumberLong(1)
},
"lastWriteDate" : ISODate("2018-07-09T02:03:56Z"),
"majorityOpTime" : {
"ts" : Timestamp(1531101836, 1),
"t" : NumberLong(1)
},
"majorityWriteDate" : ISODate("2018-07-09T02:03:56Z")
},
"maxBsonObjectSize" : 16777216,
"maxMessageSizeBytes" : 48000000,
"maxWriteBatchSize" : 100000,
"localTime" : ISODate("2018-07-09T02:03:57.856Z"),
"logicalSessionTimeoutMinutes" : 30,
"minWireVersion" : 0,
"maxWireVersion" : 6,
"readOnly" : false,
"ok" : 1,
"operationTime" : Timestamp(1531101836, 1),
"$clusterTime" : {
"clusterTime" : Timestamp(1531101836, 1),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
}
rs1:PRIMARY> exit
bye
[root@host52 ~]# ss -tunlp | grep mongo
tcp LISTEN 0 128 192.168.4.52:27052 *:* users:(("mongod",pid=2152,fd=11))
[root@host52 ~]# mongo --host 192.168.4.51 --port 27051
MongoDB shell version v3.6.3
connecting to: mongodb://192.168.4.51:27051/
MongoDB server version: 3.6.3
Server has startup warnings:
2018-07-09T09:43:10.836+0800 I CONTROL [initandlisten]
2018-07-09T09:43:10.836+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2018-07-09T09:43:10.836+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2018-07-09T09:43:10.836+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
2018-07-09T09:43:10.836+0800 I CONTROL [initandlisten]
2018-07-09T09:43:10.837+0800 I CONTROL [initandlisten]
2018-07-09T09:43:10.837+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
2018-07-09T09:43:10.837+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2018-07-09T09:43:10.837+0800 I CONTROL [initandlisten]
2018-07-09T09:43:10.837+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
2018-07-09T09:43:10.837+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2018-07-09T09:43:10.837+0800 I CONTROL [initandlisten]
> config={ _id:"rs1", members:[ {_id:0,host:"192.168.4.51:27051"}, {_id:1,host:"192.168.4.52:27052"}, {_id:2,host:"192.168.4.53:27053"} ] };
{
"_id" : "rs1",
"members" : [
{
"_id" : 0,
"host" : "192.168.4.51:27051"
},
{
"_id" : 1,
"host" : "192.168.4.52:27052"
},
{
"_id" : 2,
"host" : "192.168.4.53:27053"
}
]
}
> rs.initiate(config)
{
"ok" : 1,
"operationTime" : Timestamp(1531101753, 1),
"$clusterTime" : {
"clusterTime" : Timestamp(1531101753, 1),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
}
rs1:SECONDARY> rs.isMaster()
{
"hosts" : [
"192.168.4.51:27051",
"192.168.4.52:27052",
"192.168.4.53:27053"
],
"setName" : "rs1",
"setVersion" : 1,
"ismaster" : true,
"secondary" : false,
"primary" : "192.168.4.51:27051",
"me" : "192.168.4.51:27051",
"electionId" : ObjectId("7fffffff0000000000000001"),
"lastWrite" : {
"opTime" : {
"ts" : Timestamp(1531101769, 1),
"t" : NumberLong(1)
},
"lastWriteDate" : ISODate("2018-07-09T02:02:49Z"),
"majorityOpTime" : {
"ts" : Timestamp(1531101769, 1),
"t" : NumberLong(1)
},
"majorityWriteDate" : ISODate("2018-07-09T02:02:49Z")
},
"maxBsonObjectSize" : 16777216,
"maxMessageSizeBytes" : 48000000,
"maxWriteBatchSize" : 100000,
"localTime" : ISODate("2018-07-09T02:03:00.159Z"),
"logicalSessionTimeoutMinutes" : 30,
"minWireVersion" : 0,
"maxWireVersion" : 6,
"readOnly" : false,
"ok" : 1,
"operationTime" : Timestamp(1531101769, 1),
"$clusterTime" : {
"clusterTime" : Timestamp(1531101769, 1),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
}
rs1:PRIMARY> rs.isMaster()
{
"hosts" : [
"192.168.4.51:27051",
"192.168.4.52:27052",
"192.168.4.53:27053"
],
"setName" : "rs1",
"setVersion" : 1,
"ismaster" : true,
"secondary" : false,
"primary" : "192.168.4.51:27051",
"me" : "192.168.4.51:27051",
"electionId" : ObjectId("7fffffff0000000000000001"),
"lastWrite" : {
"opTime" : {
"ts" : Timestamp(1531101836, 1),
"t" : NumberLong(1)
},
"lastWriteDate" : ISODate("2018-07-09T02:03:56Z"),
"majorityOpTime" : {
"ts" : Timestamp(1531101836, 1),
"t" : NumberLong(1)
},
"majorityWriteDate" : ISODate("2018-07-09T02:03:56Z")
},
"maxBsonObjectSize" : 16777216,
"maxMessageSizeBytes" : 48000000,
"maxWriteBatchSize" : 100000,
"localTime" : ISODate("2018-07-09T02:03:57.856Z"),
"logicalSessionTimeoutMinutes" : 30,
"minWireVersion" : 0,
"maxWireVersion" : 6,
"readOnly" : false,
"ok" : 1,
"operationTime" : Timestamp(1531101836, 1),
"$clusterTime" : {
"clusterTime" : Timestamp(1531101836, 1),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
}
rs1:PRIMARY> exit
bye
[root@host52 ~]# ss -tunlp | grep mongo
tcp LISTEN 0 128 192.168.4.52:27052 *:* users:(("mongod",pid=2152,fd=11))
[root@host52 ~]# mongo --host 192.168.4.51 --port 27051
MongoDB shell version v3.6.3
connecting to: mongodb://192.168.4.51:27051/
MongoDB server version: 3.6.3
Server has startup warnings:
2018-07-09T09:43:10.836+0800 I CONTROL [initandlisten]
2018-07-09T09:43:10.836+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2018-07-09T09:43:10.836+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2018-07-09T09:43:10.836+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
2018-07-09T09:43:10.836+0800 I CONTROL [initandlisten]
2018-07-09T09:43:10.837+0800 I CONTROL [initandlisten]
2018-07-09T09:43:10.837+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
2018-07-09T09:43:10.837+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2018-07-09T09:43:10.837+0800 I CONTROL [initandlisten]
2018-07-09T09:43:10.837+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
2018-07-09T09:43:10.837+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2018-07-09T09:43:10.837+0800 I CONTROL [initandlisten]
> config={ _id:"rs1", members:[ {_id:0,host:"192.168.4.51:27051"}, {_id:1,host:"192.168.4.52:27052"}, {_id:2,host:"192.168.4.53:27053"} ] };
{
"_id" : "rs1",
"members" : [
{
"_id" : 0,
"host" : "192.168.4.51:27051"
},
{
"_id" : 1,
"host" : "192.168.4.52:27052"
},
{
"_id" : 2,
"host" : "192.168.4.53:27053"
}
]
}
> rs.initiate(config)
{
"ok" : 1,
"operationTime" : Timestamp(1531101753, 1),
"$clusterTime" : {
"clusterTime" : Timestamp(1531101753, 1),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
}
rs1:SECONDARY> rs.isMaster()
{
"hosts" : [
"192.168.4.51:27051",
"192.168.4.52:27052",
"192.168.4.53:27053"
],
"setName" : "rs1",
"setVersion" : 1,
"ismaster" : true,
"secondary" : false,
"primary" : "192.168.4.51:27051",
"me" : "192.168.4.51:27051",
"electionId" : ObjectId("7fffffff0000000000000001"),
"lastWrite" : {
"opTime" : {
"ts" : Timestamp(1531101769, 1),
"t" : NumberLong(1)
},
"lastWriteDate" : ISODate("2018-07-09T02:02:49Z"),
"majorityOpTime" : {
"ts" : Timestamp(1531101769, 1),
"t" : NumberLong(1)
},
"majorityWriteDate" : ISODate("2018-07-09T02:02:49Z")
},
"maxBsonObjectSize" : 16777216,
"maxMessageSizeBytes" : 48000000,
"maxWriteBatchSize" : 100000,
"localTime" : ISODate("2018-07-09T02:03:00.159Z"),
"logicalSessionTimeoutMinutes" : 30,
"minWireVersion" : 0,
"maxWireVersion" : 6,
"readOnly" : false,
"ok" : 1,
"operationTime" : Timestamp(1531101769, 1),
"$clusterTime" : {
"clusterTime" : Timestamp(1531101769, 1),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
}
rs1:PRIMARY> rs.isMaster()
{
"hosts" : [
"192.168.4.51:27051",
"192.168.4.52:27052",
"192.168.4.53:27053"
],
"setName" : "rs1",
"setVersion" : 1,
"ismaster" : true,
"secondary" : false,
"primary" : "192.168.4.51:27051",
"me" : "192.168.4.51:27051",
"electionId" : ObjectId("7fffffff0000000000000001"),
"lastWrite" : {
"opTime" : {
"ts" : Timestamp(1531101836, 1),
"t" : NumberLong(1)
},
"lastWriteDate" : ISODate("2018-07-09T02:03:56Z"),
"majorityOpTime" : {
"ts" : Timestamp(1531101836, 1),
"t" : NumberLong(1)
},
"majorityWriteDate" : ISODate("2018-07-09T02:03:56Z")
},
"maxBsonObjectSize" : 16777216,
"maxMessageSizeBytes" : 48000000,
"maxWriteBatchSize" : 100000,
"localTime" : ISODate("2018-07-09T02:03:57.856Z"),
"logicalSessionTimeoutMinutes" : 30,
"minWireVersion" : 0,
"maxWireVersion" : 6,
"readOnly" : false,
"ok" : 1,
"operationTime" : Timestamp(1531101836, 1),
"$clusterTime" : {
"clusterTime" : Timestamp(1531101836, 1),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
}
rs1:PRIMARY> exit
bye
[root@host52 ~]# ss -tunlp | grep mongo
tcp LISTEN 0 128 192.168.4.52:27052 *:* users:(("mongod",pid=2152,fd=11))
检测
[root@host50 ~]# mongo --host 192.168.4.51 --port 27051
MongoDB shell version v3.6.3
connecting to: mongodb://192.168.4.51:27051/
rs1:PRIMARY> show dbs
admin 0.000GB
config 0.000GB
local 0.000GB
rs1:PRIMARY> db
test
rs1:PRIMARY> use gamedb
switched to db gamedb
rs1:PRIMARY> db.c1.save({name:"test",age:19})
WriteResult({ "nInserted" : 1 })
rs1:PRIMARY>
默认从库不能执行show dbs要加入db.getMongo().setSlaveOk()
[root@host52 ~]# mongo --host 192.168.4.52 --port 27052MongoDB shell version v3.6.3
connecting to: mongodb://192.168.4.52:27052/
MongoDB server version: 3.6.3
Server has startup warnings:
2018-07-09T10:02:08.812+0800 I CONTROL [initandlisten]
2018-07-09T10:02:08.812+0800 I CONTROL [initandlisten] ** WARNING: Access control is not enabled for the database.
2018-07-09T10:02:08.812+0800 I CONTROL [initandlisten] ** Read and write access to data and configuration is unrestricted.
2018-07-09T10:02:08.812+0800 I CONTROL [initandlisten] ** WARNING: You are running this process as the root user, which is not recommended.
2018-07-09T10:02:08.812+0800 I CONTROL [initandlisten]
2018-07-09T10:02:08.813+0800 I CONTROL [initandlisten]
2018-07-09T10:02:08.813+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/enabled is 'always'.
2018-07-09T10:02:08.813+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2018-07-09T10:02:08.813+0800 I CONTROL [initandlisten]
2018-07-09T10:02:08.813+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'.
2018-07-09T10:02:08.813+0800 I CONTROL [initandlisten] ** We suggest setting it to 'never'
2018-07-09T10:02:08.813+0800 I CONTROL [initandlisten]
rs1:SECONDARY> show dbs
2018-07-09T10:33:13.914+0800 E QUERY [thread1] Error: listDatabases failed:{
"operationTime" : Timestamp(1531103586, 1),
"ok" : 0,
"errmsg" : "not master and slaveOk=false",
"code" : 13435,
"codeName" : "NotMasterNoSlaveOk",
"$clusterTime" : {
"clusterTime" : Timestamp(1531103586, 1),
"signature" : {
"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
"keyId" : NumberLong(0)
}
}
} :
_getErrorWithCode@src/mongo/shell/utils.js:25:13
Mongo.prototype.getDBs@src/mongo/shell/mongo.js:65:1
shellHelper.show@src/mongo/shell/utils.js:816:19
shellHelper@src/mongo/shell/utils.js:706:15
@(shellhelp2):1:1
rs1:SECONDARY> db.g
db.getCollection( db.getLogComponents( db.getQueryOptions( db.getSisterDB( db.grantRolesToRole(
db.getCollectionInfos( db.getMongo( db.getReplicationInfo( db.getSlaveOk( db.grantRolesToUser(
db.getCollectionNames( db.getName( db.getRole( db.getUser( db.group(
db.getLastError( db.getPrevError( db.getRoles( db.getUsers( db.groupcmd(
db.getLastErrorCmd( db.getProfilingLevel( db.getSession( db.getWriteConcern( db.groupeval(
db.getLastErrorObj( db.getProfilingStatus( db.getSiblingDB( db.grantPrivilegesToRole(
rs1:SECONDARY> db.getMongo(
Display all 175 possibilities? (y or n)
rs1:SECONDARY> db.getMongo().setSlaveOk()
rs1:SECONDARY> show dbs
admin 0.000GB
config 0.000GB
gamedb 0.000GB
local 0.000GB
rs1:SECONDARY> use gamedb
switched to db gamedb
rs1:SECONDARY> db.c1.find()
{ "_id" : ObjectId("5b42c9103da3f658581eb6b5"), "name" : "test", "age" : 19 }
rs1:SECONDARY>
删除配置文件中的集群配置重启服务
dbpath=/usr/local/mongodb/data/db
fork=true
logpath=/usr/local/mongodb/log/mongodb.log
logappend=true
bind_ip=192.168.4.53
port=27053
#replSet=rs1 //#
[root@host53 ~]# mongod --shutdown -f /usr/local/mongodb/etc/mongodb.conf
killing process with pid: 2094
[root@host53 ~]# mongod -f /usr/local/mongodb/etc/mongodb.conf
about to fork child process, waiting until server is ready for connections.
forked process: 2926
child process started successfully, parent exiting
[root@host53 ~]#