Preparatory work
Environment: CentOS6.5 64-bit
MongoDB 3.0.1 64-bit
First, start the Mongod service
[Email protected] data]#/usr/local/mongodb3.0.1/bin/mongod--port 40144--dbpath=/data/mongodb3.0.1/data/--logpath =/data/mongodb3.0.1/log/mongodb.log--directoryperdb--maxconns--logappend--replset repl/192.168.66.89:50144-- Fork
[Email protected] data]#/usr/local/mongodb3.0.1/bin/mongod--port 50144--dbpath=/data/mongodb3.0.1/db_50144/-- Logpath=/data/mongodb3.0.1/db_50144/mongodb.log--directoryperdb--maxconns--logappend--replSet repl/ 192.168.66.89:40144--fork
[Email protected] data]#/usr/local/mongodb3.0.1/bin/mongod--port 60144--dbpath=/data/mongodb3.0.1/db_60144/-- Logpath=/data/mongodb3.0.1/db_60144/mongodb.log--directoryperdb--maxconns--logappend--replSet repl/ 192.168.66.89:40144--fork
Parameters:
--oplogsize Log operation file Size (5% of the default disk space remaining)
--dbpath Data File path
--logpath log file path
--port port number, default is 27017
--replset the name of the replica set, the parameter for each node in a replica sets is given a copy set name, here is test.
--replset test/This is followed by the IP and port of the other standard node
--maxconns Maximum number of connections
--fork Background Run
--logappend log files are recycled, and if the log file is full, the new log is overwritten with the longest log.
Select a node to log in to the MongoDB database
[Email protected] data]#/usr/local/mongodb3.0.1/bin/mongo--port 40144
MongoDB Shell version:3.0.1
Connecting To:127.0.0.1:40144/test
Server has startup warnings:
2015-05-08t09:06:42.270+0800 i CONTROL [initandlisten] * * Warning:you is running this process as the root user, which I s not recommended.
2015-05-08t09:06:42.270+0800 I CONTROL [Initandlisten]
2015-05-08t09:06:42.270+0800 I CONTROL [Initandlisten]
2015-05-08t09:06:42.270+0800 I CONTROL [initandlisten] * * WARNING:/sys/kernel/mm/transparent_hugepage/enabled is ' Always '.
2015-05-08t09:06:42.270+0800 I CONTROL [initandlisten] * * We suggest setting it to ' never '
2015-05-08t09:06:42.270+0800 I CONTROL [Initandlisten]
2015-05-08t09:06:42.270+0800 I CONTROL [initandlisten] * * WARNING:/sys/kernel/mm/transparent_hugepage/defrag is ' Always '.
2015-05-08t09:06:42.270+0800 I CONTROL [initandlisten] * * We suggest setting it to ' never '
2015-05-08t09:06:42.270+0800 I CONTROL [Initandlisten]
#使用admin数据库
> Use admin;
Switched to DB admin
#定义副本集配置变量并初始化, here's _id: "Replset" and the above command parameter "--replset repl" to keep the same
> Db.runcommand ({"replsetinitiate": {"_id": "Repl", "members": [{"_id": 1, "host": "192.168.66.89:40144"},{"_id": 2, "Host": "192.168.66.89:50144"},{"_id": 3, "host": "192.168.66.89:60144"}]});
{"OK": 1}
#查看副本集信息
Repl:other> Db._admincommand ("Replsetgetstatus");
{
"Set": "Repl",
"Date": Isodate ("2015-05-08t01:18:55.619z"),
"MyState": 1,
"Members": [
{
"_id": 1,
"Name": "192.168.66.89:40144",
"Health": 1,
"State": 1,
"Statestr": "PRIMARY",
"Uptime": 776,
"Optime": Timestamp (1431047920, 1),
"Optimedate": Isodate ("2015-05-08t01:18:40z"),
"Electiontime": Timestamp (1431047923, 1),
"Electiondate": Isodate ("2015-05-08t01:18:43z"),
"ConfigVersion": 1,
"Self": true
},
{
"_id": 2,
"Name": "192.168.66.89:50144",
"Health": 1,
"State": 2,
"Statestr": "Secondary",
"Uptime": 15,
"Optime": Timestamp (1431047920, 1),
"Optimedate": Isodate ("2015-05-08t01:18:40z"),
"Lastheartbeat": Isodate ("2015-05-08t01:18:53.650z"),
"Lastheartbeatrecv": Isodate ("2015-05-08t01:18:53.650z"),
"Pingms": 0,
"Lastheartbeatmessage": "Could not find member-sync from",
"ConfigVersion": 1
},
{
"_id": 3,
"Name": "192.168.66.89:60144",
"Health": 1,
"State": 2,
"Statestr": "Secondary",
"Uptime": 15,
"Optime": Timestamp (1431047920, 1),
"Optimedate": Isodate ("2015-05-08t01:18:40z"),
"Lastheartbeat": Isodate ("2015-05-08t01:18:53.650z"),
"Lastheartbeatrecv": Isodate ("2015-05-08t01:18:53.649z"),
"Pingms": 0,
"Lastheartbeatmessage": "Could not find member-sync from",
"ConfigVersion": 1
}
],
"OK": 1
}
Second, the test
1, the master node writes the data, the other node queries
repl:primary> use Mtdamai;
Switched to DB Mtdamai
Repl:primary> Db.user.insert ({name: "Wangxiuli"});
Writeresult ({"ninserted": 1})
Repl:primary> Db.user.find ();
{"_id": ObjectId ("554c237123db30ab1a233e4b"), "name": "Wangxiuli"}
#备节点查询发现已有数据
repl:secondary> use Mtdamai;
Switched to DB Mtdamai
Repl:secondary> Db.user.find ();
{"_id": ObjectId ("554c237123db30ab1a233e4b"), "name": "Wangxiuli"}
2. Stop the master node
Repl:secondary> Rs.status ();
{
"Set": "Repl",
"Date": Isodate ("2015-05-08t02:51:25.273z"),
"MyState": 2,
"Members": [
{
"_id": 1,
"Name": "192.168.66.89:40144",
"Health": 0,
"State": 8,
"Statestr": "(not Reachable/healthy)",
"Uptime": 0,
"Optime": Timestamp (0, 0),
"Optimedate": Isodate ("1970-01-01t00:00:00z"),
"Lastheartbeat": Isodate ("2015-05-08t02:51:23.984z"),
"Lastheartbeatrecv": Isodate ("2015-05-08t02:50:55.975z"),
"Pingms": 0,
"Lastheartbeatmessage": "Failed attempt to connect to 192.168.66.89:40144; Couldn ' t connect to server 192.168.66.89:40144 (192.168.66.89), connection attempt failed ",
"ConfigVersion":-1
},
{
"_id": 2,
"Name": "192.168.66.89:50144",
"Health": 1,
"State": 1,
"Statestr": "PRIMARY",
"Uptime": 5563,
"Optime": Timestamp (1431053169, 2),
"Optimedate": Isodate ("2015-05-08t02:46:09z"),
"Lastheartbeat": Isodate ("2015-05-08t02:51:24.227z"),
"Lastheartbeatrecv": Isodate ("2015-05-08t02:51:24.120z"),
"Pingms": 0,
"Electiontime": Timestamp (1431053458, 1),
"Electiondate": Isodate ("2015-05-08t02:50:58z"),
"ConfigVersion": 1
},
{
"_id": 3,
"Name": "192.168.66.89:60144",
"Health": 1,
"State": 2,
"Statestr": "Secondary",
"Uptime": 5733,
"Optime": Timestamp (1431053169, 2),
"Optimedate": Isodate ("2015-05-08t02:46:09z"),
"ConfigVersion": 1,
"Self": true
}
],
"OK": 1
}
#发现主节点已经重新被选出
To insert data validation again
Repl:primary> Db.user.insert ({name: "Chenglong"});
Writeresult ({"ninserted": 1})
Repl:primary> Db.user.find ();
{"_id": ObjectId ("554c237123db30ab1a233e4b"), "name": "Wangxiuli"}
{"_id": ObjectId ("554c25202dcdffb154643e56"), "name": "Chenglong"}
#验证备节点不可写
Repl:secondary> Db.user.insert ({name: "Liudehua"});
Writeresult ({"Writeerror": {"code": Undefined, "errmsg": "Not Master"}})
#查询数据已存在 that the data is synchronized to another node
repl:secondary> use Mtdamai;
Switched to DB Mtdamai
Repl:secondary> Db.user.find ();
Error:error: {"$err": "Not Master and Slaveok=false", "Code": 13435}
Repl:secondary> Rs.slaveok ();
Repl:secondary> Db.user.find ();
{"_id": ObjectId ("554c237123db30ab1a233e4b"), "name": "Wangxiuli"}
{"_id": ObjectId ("554c25202dcdffb154643e56"), "name": "Chenglong"}
#再次启动被关闭的节点, the node becomes secondary
Repl:secondary> Rs.status ();
{
"Set": "Repl",
"Date": Isodate ("2015-05-08t07:54:20.607z"),
"MyState": 2,
"Syncingto": "192.168.66.89:50144",
"Members": [
{
"_id": 1,
"Name": "192.168.66.89:40144",
"Health": 1,
"State": 2,
"Statestr": "Secondary",
"Uptime": 19,
"Optime": Timestamp (1431053600, 1),
"Optimedate": Isodate ("2015-05-08t02:53:20z"),
"Lastheartbeat": Isodate ("2015-05-08t07:54:19.079z"),
"Lastheartbeatrecv": Isodate ("2015-05-08t07:54:20.557z"),
"Pingms": 0,
"Syncingto": "192.168.66.89:60144",
"ConfigVersion": 1
},
{
"_id": 2,
"Name": "192.168.66.89:50144",
"Health": 1,
"State": 1,
"Statestr": "PRIMARY",
"Uptime": 23738,
"Optime": Timestamp (1431053600, 1),
"Optimedate": Isodate ("2015-05-08t02:53:20z"),
"Lastheartbeat": Isodate ("2015-05-08t07:54:20.152z"),
"Lastheartbeatrecv": Isodate ("2015-05-08t07:54:20.105z"),
"Pingms": 0,
"Electiontime": Timestamp (1431053458, 1),
"Electiondate": Isodate ("2015-05-08t02:50:58z"),
"ConfigVersion": 1
},
{
"_id": 3,
"Name": "192.168.66.89:60144",
"Health": 1,
"State": 2,
"Statestr": "Secondary",
"Uptime": 23908,
"Optime": Timestamp (1431053600, 1),
"Optimedate": Isodate ("2015-05-08t02:53:20z"),
"Syncingto": "192.168.66.89:50144",
"ConfigVersion": 1,
"Self": true
}
],
"OK": 1
}
#数据也同步过来了
repl:secondary> use Mtdamai;
Switched to DB Mtdamai
Repl:secondary> Db.user.find ();
{"_id": ObjectId ("554c237123db30ab1a233e4b"), "name": "Wangxiuli"}
{"_id": ObjectId ("554c25202dcdffb154643e56"), "name": "Chenglong"}
MongoDB copy Set (ii) construction
