mongodb集群部署(副本集)详细

1:部署前环境准备

操作系统:CentOS Linux release 7.8.2003 (Core)

安装包下载地址:https://www.mongodb.com/download-center/community

 

服务器资源信息:

192.168.111.139--------------master#####主节点
192.168.111.140--------------slaver#####备节点
192.168.111.141--------------arbiter#####仲裁节点

2:解压安装并启动

2.1:192.168.111.139

 mkdir -p /opt/mongodb/data/master   ###创建存放数据的目录
 mkdir -p /opt/mongodb/log    ###创建存放日志的目录
 
 mkdir -p /opt/mongodb/conf   ###创建存放配置文件的目录

配置文件:master.conf

dbpath=/opt/mongodb/data/master
logpath=/opt/mongodb/log/master.log
pidfilepath=/opt/mongodb/master.pid
directoryperdb=true
logappend=true
replSet=testrs
bind_ip=192.168.111.139
port=27017
oplogSize=10000
fork=true
#noprealloc=true

./monood -f ../conf/master.conf 

2.2 192.168.111.140

 mkdir -p /opt/mongodb/data/slaver   ###创建存放数据的目录
 mkdir -p /opt/mongodb/log    ###创建存放日志的目录
 
 mkdir -p /opt/mongodb/conf   ###创建存放配置文件的目录

配置文件:slaver.conf

dbpath=/opt/mongodb/data/slaver 
logpath=/opt/mongodb/log/slaver.log 
pidfilepath=/opt/mongodb/slaver.pid 
directoryperdb=true 
logappend=true 
replSet=testrs 
bind_ip=192.168.111.140
port=27017 
oplogSize=10000 
fork=true 
#noprealloc=true

./monood -f ../conf/slaver.conf 

2.3 192.168.111.141

 mkdir -p /opt/mongodb/data/arbiter   ###创建存放数据的目录
 mkdir -p /opt/mongodb/log    ###创建存放日志的目录
 
 mkdir -p /opt/mongodb/conf   ###创建存放配置文件的目录

配置文件:arbiter.conf

dbpath=/opt/mongodb/data/arbiter
logpath=/opt/mongodb/log/arbiter.log 
pidfilepath=/opt/mongodb/arbiter.pid 
directoryperdb=true 
logappend=true 
replSet=testrs 
bind_ip=192.168.111.141
port=27017 
oplogSize=10000 
fork=true 
#noprealloc=true

./monood -f ../conf/arbiter.conf 

3:配置主 备 仲裁节点

./mongo 192.168.111.139:27017
use admin
cfg={ _id:"testrs", members:[ {_id:0,host:'192.168.111.139:27017',priority:2}, {_id:1,host:'192.168.111.140:27017',priority:1},{_id:2,host:'192.168.111.141:27017',arbiterOnly:true}] }; 

rs.initiate(cfg) ###使之生效

查看rs的相关信息

rs.status()

##########以上基本就是副本集集群部署的详细步骤,简单测试步骤如下=============

测试步骤:

1:再主节点添加数据

 

 

 2:再从节点查看读取数据

 

 

 报错如上:是因为从节点没有开启读操作

执行命令

rs.slaveOk()

 

 

 然后再进行读取操作

 

 

 

3:测试主节点宕机故障

 

宕机故障前查看rs.status()

  1. {
        "set" : "testrs",
        "date" : ISODate("2022-01-06T09:25:12.526Z"),
        "myState" : 2,
        "term" : NumberLong(1),
        "syncSourceHost" : "192.168.111.139:27017",
        "syncSourceId" : 0,
        "heartbeatIntervalMillis" : NumberLong(2000),
        "majorityVoteCount" : 2,
        "writeMajorityCount" : 2,
        "votingMembersCount" : 3,
        "writableVotingMembersCount" : 2,
        "optimes" : {
            "lastCommittedOpTime" : {
                "ts" : Timestamp(1641461104, 1),
                "t" : NumberLong(1)
            },
            "lastCommittedWallTime" : ISODate("2022-01-06T09:25:04.568Z"),
            "readConcernMajorityOpTime" : {
                "ts" : Timestamp(1641461104, 1),
                "t" : NumberLong(1)
            },
            "appliedOpTime" : {
                "ts" : Timestamp(1641461104, 1),
                "t" : NumberLong(1)
            },
            "durableOpTime" : {
                "ts" : Timestamp(1641461104, 1),
                "t" : NumberLong(1)
            },
            "lastAppliedWallTime" : ISODate("2022-01-06T09:25:04.568Z"),
            "lastDurableWallTime" : ISODate("2022-01-06T09:25:04.568Z")
        },
        "lastStableRecoveryTimestamp" : Timestamp(1641461064, 1),
        "electionParticipantMetrics" : {
            "votedForCandidate" : true,
            "electionTerm" : NumberLong(1),
            "lastVoteDate" : ISODate("2022-01-06T08:41:24.268Z"),
            "electionCandidateMemberId" : 0,
            "voteReason" : "",
            "lastAppliedOpTimeAtElection" : {
                "ts" : Timestamp(1641458473, 1),
                "t" : NumberLong(-1)
            },
            "maxAppliedOpTimeInSet" : {
                "ts" : Timestamp(1641458473, 1),
                "t" : NumberLong(-1)
            },
            "priorityAtElection" : 1,
            "newTermStartDate" : ISODate("2022-01-06T08:41:24.284Z"),
            "newTermAppliedDate" : ISODate("2022-01-06T08:41:24.369Z")
        },
        "members" : [
            {
                "_id" : 0,
                "name" : "192.168.111.139:27017",
                "health" : 1,
                "state" : 1,
                "stateStr" : "PRIMARY",
                "uptime" : 2638,
                "optime" : {
                    "ts" : Timestamp(1641461104, 1),
                    "t" : NumberLong(1)
                },
                "optimeDurable" : {
                    "ts" : Timestamp(1641461104, 1),
                    "t" : NumberLong(1)
                },
                "optimeDate" : ISODate("2022-01-06T09:25:04Z"),
                "optimeDurableDate" : ISODate("2022-01-06T09:25:04Z"),
                "lastAppliedWallTime" : ISODate("2022-01-06T09:25:04.568Z"),
                "lastDurableWallTime" : ISODate("2022-01-06T09:25:04.568Z"),
                "lastHeartbeat" : ISODate("2022-01-06T09:25:11.711Z"),
                "lastHeartbeatRecv" : ISODate("2022-01-06T09:25:10.982Z"),
                "pingMs" : NumberLong(0),
                "lastHeartbeatMessage" : "",
                "syncSourceHost" : "",
                "syncSourceId" : -1,
                "infoMessage" : "",
                "electionTime" : Timestamp(1641458484, 1),
                "electionDate" : ISODate("2022-01-06T08:41:24Z"),
                "configVersion" : 1,
                "configTerm" : 1
            },
            {
                "_id" : 1,
                "name" : "192.168.111.140:27017",
                "health" : 1,
                "state" : 2,
                "stateStr" : "SECONDARY",
                "uptime" : 2911,
                "optime" : {
                    "ts" : Timestamp(1641461104, 1),
                    "t" : NumberLong(1)
                },
                "optimeDate" : ISODate("2022-01-06T09:25:04Z"),
                "lastAppliedWallTime" : ISODate("2022-01-06T09:25:04.568Z"),
                "lastDurableWallTime" : ISODate("2022-01-06T09:25:04.568Z"),
                "syncSourceHost" : "192.168.111.139:27017",
                "syncSourceId" : 0,
                "infoMessage" : "",
                "configVersion" : 1,
                "configTerm" : 1,
                "self" : true,
                "lastHeartbeatMessage" : ""
            },
            {
                "_id" : 2,
                "name" : "192.168.111.141:27017",
                "health" : 1,
                "state" : 7,
                "stateStr" : "ARBITER",
                "uptime" : 2638,
                "lastHeartbeat" : ISODate("2022-01-06T09:25:11.711Z"),
                "lastHeartbeatRecv" : ISODate("2022-01-06T09:25:10.765Z"),
                "pingMs" : NumberLong(0),
                "lastHeartbeatMessage" : "",
                "syncSourceHost" : "",
                "syncSourceId" : -1,
                "infoMessage" : "",
                "configVersion" : 1,
                "configTerm" : 1
            }
        ],
        "ok" : 1,
        "$clusterTime" : {
            "clusterTime" : Timestamp(1641461104, 1),
            "signature" : {
                "hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
                "keyId" : NumberLong(0)
            }
        },
        "operationTime" : Timestamp(1641461104, 1)
    }

    2:将主节点的进程杀掉

ps -ef|grep mongo

kill -9 2705

 

 

 登录从节点查看节点状态

{
    "set" : "testrs",
    "date" : ISODate("2022-01-06T09:31:29.890Z"),
    "myState" : 1,
    "term" : NumberLong(2),
    "syncSourceHost" : "",
    "syncSourceId" : -1,
    "heartbeatIntervalMillis" : NumberLong(2000),
    "majorityVoteCount" : 2,
    "writeMajorityCount" : 2,
    "votingMembersCount" : 3,
    "writableVotingMembersCount" : 2,
    "optimes" : {
        "lastCommittedOpTime" : {
            "ts" : Timestamp(1641461424, 1),
            "t" : NumberLong(1)
        },
        "lastCommittedWallTime" : ISODate("2022-01-06T09:30:24.594Z"),
        "readConcernMajorityOpTime" : {
            "ts" : Timestamp(1641461424, 1),
            "t" : NumberLong(1)
        },
        "appliedOpTime" : {
            "ts" : Timestamp(1641461481, 1),
            "t" : NumberLong(2)
        },
        "durableOpTime" : {
            "ts" : Timestamp(1641461481, 1),
            "t" : NumberLong(2)
        },
        "lastAppliedWallTime" : ISODate("2022-01-06T09:31:21.169Z"),
        "lastDurableWallTime" : ISODate("2022-01-06T09:31:21.169Z")
    },
    "lastStableRecoveryTimestamp" : Timestamp(1641461424, 1),
    "electionCandidateMetrics" : {
        "lastElectionReason" : "electionTimeout",
        "lastElectionDate" : ISODate("2022-01-06T09:30:41.137Z"),
        "electionTerm" : NumberLong(2),
        "lastCommittedOpTimeAtElection" : {
            "ts" : Timestamp(1641461424, 1),
            "t" : NumberLong(1)
        },
        "lastSeenOpTimeAtElection" : {
            "ts" : Timestamp(1641461424, 1),
            "t" : NumberLong(1)
        },
        "numVotesNeeded" : 2,
        "priorityAtElection" : 1,
        "electionTimeoutMillis" : NumberLong(10000),
        "numCatchUpOps" : NumberLong(0),
        "newTermStartDate" : ISODate("2022-01-06T09:30:41.161Z")
    },
    "electionParticipantMetrics" : {
        "votedForCandidate" : true,
        "electionTerm" : NumberLong(1),
        "lastVoteDate" : ISODate("2022-01-06T08:41:24.268Z"),
        "electionCandidateMemberId" : 0,
        "voteReason" : "",
        "lastAppliedOpTimeAtElection" : {
            "ts" : Timestamp(1641458473, 1),
            "t" : NumberLong(-1)
        },
        "maxAppliedOpTimeInSet" : {
            "ts" : Timestamp(1641458473, 1),
            "t" : NumberLong(-1)
        },
        "priorityAtElection" : 1
    },
    "members" : [
        {
            "_id" : 0,
            "name" : "192.168.111.139:27017",
            "health" : 0,
            "state" : 8,
            "stateStr" : "(not reachable/healthy)",
            "uptime" : 0,
            "optime" : {
                "ts" : Timestamp(0, 0),
                "t" : NumberLong(-1)
            },
            "optimeDurable" : {
                "ts" : Timestamp(0, 0),
                "t" : NumberLong(-1)
            },
            "optimeDate" : ISODate("1970-01-01T00:00:00Z"),
            "optimeDurableDate" : ISODate("1970-01-01T00:00:00Z"),
            "lastAppliedWallTime" : ISODate("2022-01-06T09:30:24.594Z"),
            "lastDurableWallTime" : ISODate("2022-01-06T09:30:24.594Z"),
            "lastHeartbeat" : ISODate("2022-01-06T09:31:29.296Z"),
            "lastHeartbeatRecv" : ISODate("2022-01-06T09:30:31.293Z"),
            "pingMs" : NumberLong(0),
            "lastHeartbeatMessage" : "Error connecting to 192.168.111.139:27017 :: caused by :: Connection refused",
            "syncSourceHost" : "",
            "syncSourceId" : -1,
            "infoMessage" : "",
            "configVersion" : 1,
            "configTerm" : 1
        },
        {
            "_id" : 1,
            "name" : "192.168.111.140:27017",
            "health" : 1,
            "state" : 1,
            "stateStr" : "PRIMARY",
            "uptime" : 3288,
            "optime" : {
                "ts" : Timestamp(1641461481, 1),
                "t" : NumberLong(2)
            },
            "optimeDate" : ISODate("2022-01-06T09:31:21Z"),
            "lastAppliedWallTime" : ISODate("2022-01-06T09:31:21.169Z"),
            "lastDurableWallTime" : ISODate("2022-01-06T09:31:21.169Z"),
            "syncSourceHost" : "",
            "syncSourceId" : -1,
            "infoMessage" : "",
            "electionTime" : Timestamp(1641461441, 1),
            "electionDate" : ISODate("2022-01-06T09:30:41Z"),
            "configVersion" : 1,
            "configTerm" : 2,
            "self" : true,
            "lastHeartbeatMessage" : ""
        },
        {
            "_id" : 2,
            "name" : "192.168.111.141:27017",
            "health" : 1,
            "state" : 7,
            "stateStr" : "ARBITER",
            "uptime" : 3015,
            "lastHeartbeat" : ISODate("2022-01-06T09:31:29.200Z"),
            "lastHeartbeatRecv" : ISODate("2022-01-06T09:31:29.214Z"),
            "pingMs" : NumberLong(0),
            "lastHeartbeatMessage" : "",
            "syncSourceHost" : "",
            "syncSourceId" : -1,
            "infoMessage" : "",
            "configVersion" : 1,
            "configTerm" : 2
        }
    ],
    "ok" : 1,
    "$clusterTime" : {
        "clusterTime" : Timestamp(1641461481, 1),
        "signature" : {
            "hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
            "keyId" : NumberLong(0)
        }
    },
    "operationTime" : Timestamp(1641461481, 1)
}

从上面信息可以看到从节点的节点状态已经变成了“PRIMARY”主节点,

重启主节点信息,然后查看节点状态发现节点的主从状态再次更新变化。。。

上面的部署环境:一主一丛一仲裁 =====主节点挂机后通过仲裁机制自动切换到备机上

        一主两从===========主节点挂机后自动切换到另外两台中的一台

###########################################即供参考,请勿乱喷。。

posted @ 2022-01-06 17:50  卜闻卜问卜听卜在乎  阅读(665)  评论(0编辑  收藏  举报