MongoDB 6.0.2 sharding replica set

SYSTEM/Software

MongoDB 6.0.2 sharding replica set

SeonJaeLee 2022. 11. 11. 12:59

구성 목표

물리서버 3대

Shading

클러스터 ( 장애시 남은 노드 균등 부하 )

장애노드 장애복구시 우선순위를 자동 failback

	Mongo-1 Server	Mongo-2 Server	Mongo-3 Server	Role
mongos	-	-	-	WAS 20001
IP	172.16.1.24	172.16.1.25	172.16.1.26
Shard-1	Primary 30001	Secondary 30001	Arbiter 30001	Replicaset-1
Shard-2	Primary 30002	Arbiter 30002	Secondary 30002	Replicaset-2
Shard-3	Secondary 30003	Primary 30003	Arbiter 30003	Replicaset-3
Shard-4	Arbiter 30004	Primary 30004	Secondary 30004	Replicaset-4
Shard-5	Secondary 30005	Arbiter 30005	Primary 30005	Replicaset-5
Shard-6	Arbiter 30006	Secondary 30006	Primary 30006	Replicaset-6
Config	config-1 20000	config-2 20000	config-3 20000	Replicaset-Config

장애시 Failover

시나리오 : mongo-3-server 장애

shard-5 Secondary -> Primary ( Mongo-1 Server )

shard-6 Secondary -> Primary ( Mongo-2 Server )

	Mongo-1 Server	Mongo-2 Server	~~Mongo-3 Server~~	Role
mongos	-	-	-	WAS 20001
IP	172.16.1.24	172.16.1.25	~~172.16.1.26~~
Shard-1	Primary 30001	Secondary 30001	~~Arbiter 30001~~	Replicaset-1
Shard-2	Primary 30002	Arbiter 30002	~~Secondary 30002~~	Replicaset-2
Shard-3	Secondary 30003	Primary 30003	~~Arbiter 30003~~	Replicaset-3
Shard-4	Arbiter 30004	Primary 30004	~~Secondary 30004~~	Replicaset-4
Shard-5	~~Secondary~~ 30005 Primary	Arbiter 30005	~~Primary 30005~~	Replicaset-5
Shard-6	Arbiter 30006	~~Secondary~~ 30006 Primary	~~Primary 30006~~	Replicaset-6
Config	config-1 20000	config-2 20000	~~config-3 20000~~	Replicaset-Config

Mongodb Install

https://www.mongodb.com/ 접속 및 Products > Community Server

필요한 설치 파일은 4가지이며 필요한 버전 다운로드

mongosh 설치 버전은 openssl버전에 따라 나와있는 패키지파일 다름

mongodb-database-tools-rhel80-x86_64-100.6.0.rpm

mongodb-mongosh-shared-openssl11-1.6.0.x86_64.rpm

mongodb-org-server-6.0.2-1.el8.x86_64.rpm

mongodb-org-mongos-6.0.2-1.el8.x86_64.rpm // mongos는 최종적으로 WAS서버에서 구동될 예정이나 설치 과정에서 테스트 및 설정에 필요함으로 함께 설치

mongo-1 , mongo-2 , mongo-3 ( 공통 )

THP 비활성화

echo never > /sys/kernel/mm/transparent_hugepage/enabled

echo never > /sys/kernel/mm/transparent_hugepage/defrag

Linux Setting 수정

vi /etc/security/limit.conf

*    soft   memlock  unlimited
*    hard   memlock  unlimited
*    hard   nofile   65000
*    soft   nofile   65000
*    soft   nproc 65000
*    hard   nproc 65000

vi /etc/sysctl.conf

vm.dirty_ratio = 7
vm.dirty_background_ratio = 2
vm.swappiness = 1
vm.max_map_count=262144
net.core.somaxconn = 4096
net.ipv4.tcp_fin_timeout = 30
net.ipv4.tcp_keepalive_intvl = 75
net.ipv4.tcp_keepalive_time = 7200
net.ipv4.tcp_max_syn_backlog = 4096
net.ipv4.ip_local_port_range = 1024 65000

호스트네임추가 ( Mongos를 구동할 서버에서도 진행필요 )

vi /etc/hosts

172.16.1.24 Mongo-1
172.16.1.25 Mongo-2
172.16.1.26 Mongo-3

각각의 서버에 업로드 ( /usr/local/src/ )

디렉토리 생성

mkdir -p /apps/mongodb/config
mkdir -p /apps/mongodb/log
mkdir -p /apps/mongodb/data/rs1
mkdir -p /apps/mongodb/data/rs2
mkdir -p /apps/mongodb/data/rs3
mkdir -p /apps/mongodb/data/rs4
mkdir -p /apps/mongodb/data/rs5
mkdir -p /apps/mongodb/data/rs6
mkdir -p /apps/mongodb/data/conf

mkdir -p /apps/mongodb/data/arbiter-rs1
mkdir -p /apps/mongodb/data/arbiter-rs2
mkdir -p /apps/mongodb/data/arbiter-rs3
mkdir -p /apps/mongodb/data/arbiter-rs4
mkdir -p /apps/mongodb/data/arbiter-rs5
mkdir -p /apps/mongodb/data/arbiter-rs6

패키지 설치

cd /usr/local/src

dnf localinstall mongodb-database-tools-rhel80-x86_64-100.6.0.rpm

dnf localinstall mongodb-mongosh-shared-openssl11-1.6.0.x86_64.rpm

dnf localinstall mongodb-org-server-6.0.2-1.el8.x86_64.rpm

dnf localinstall mongodb-org-mongos-6.0.2-1.el8.x86_64.rpm

config 설정

vi /apps/mongodb/config/config.conf

sharding:
  clusterRole: configsvr
replication:
  replSetName: "configRepl"
net:
  port: 40001
bindIp: 0.0.0.0
storage:
  dbPath: /apps/mongodb/data/conf
  journal:
    enabled: true
  engine: "wiredTiger"
processManagement:
  fork: true
systemLog:
  destination: file
  path: /apps/mongodb/log/mongod-config.log
  logAppend: true
#security:
#  keyFile: /apps/mongodb/config/mongodb-keyfile
#  authorization: 'enabled'

vi /apps/mongodb/config/shard-rs1.conf

sharding:
  clusterRole: shardsvr
net:
  port: 30001
bindIp: 0.0.0.0
replication:
  replSetName: "rs1"
storage:
  dbPath: /apps/mongodb/data/rs1
  journal:
    enabled: true
  engine: "wiredTiger"
  wiredTiger:
    engineConfig:
      cacheSizeGB: 32
processManagement:
  fork: true
systemLog:
  destination: file
  path: /apps/mongodb/log/mongod-shard-rs1.log
  logAppend: true
#security:
#  keyFile: /apps/mongodb/config/mongodb-keyfile
#  authorization: 'enabled'

vi /apps/mongodb/config/shard-rs2.conf

sharding:
  clusterRole: shardsvr
net:
  port: 30002
bindIp: 0.0.0.0
replication:
  replSetName: "rs2"
storage:
  dbPath: /apps/mongodb/data/rs2
  journal:
    enabled: true
  engine: "wiredTiger"
  wiredTiger:
    engineConfig:
      cacheSizeGB: 32
processManagement:
  fork: true
systemLog:
  destination: file
  path: /apps/mongodb/log/mongod-shard-rs2.log
  logAppend: true
#security:
#  keyFile: /apps/mongodb/config/mongodb-keyfile
#  authorization: 'enabled'

vi /apps/mongodb/config/shard-rs3.conf

sharding:
  clusterRole: shardsvr
net:
  port: 30003
bindIp: 0.0.0.0
replication:
  replSetName: "rs3"
storage:
  dbPath: /apps/mongodb/data/rs3
  journal:
    enabled: true
  engine: "wiredTiger"
  wiredTiger:
    engineConfig:
      cacheSizeGB: 32
processManagement:
  fork: true
systemLog:
  destination: file
  path: /apps/mongodb/log/mongod-shard-rs3.log
  logAppend: true
#security:
# keyFile: /apps/mongodb/config/mongodb-keyfile
# authorization: 'enabled'

vi /apps/mongodb/config/shard-rs4.conf

sharding:
  clusterRole: shardsvr
net:
  port: 30004
bindIp: 0.0.0.0
replication:
  replSetName: "rs4"
storage:
  dbPath: /apps/mongodb/data/rs4
  journal:
    enabled: true
  engine: "wiredTiger"
  wiredTiger:
    engineConfig:
      cacheSizeGB: 32
processManagement:
  fork: true
systemLog:
  destination: file
  path: /apps/mongodb/log/mongod-shard-rs4.log
  logAppend: true
#security:
#  keyFile: /apps/mongodb/config/mongodb-keyfile
#  authorization: 'enabled'

vi /apps/mongodb/config/shard-rs5.conf

sharding:
  clusterRole: shardsvr
net:
  port: 30005
bindIp: 0.0.0.0
replication:
  replSetName: "rs5"
storage:
  dbPath: /apps/mongodb/data/rs5
  journal:
    enabled: true
  engine: "wiredTiger"
  wiredTiger:
    engineConfig:
      cacheSizeGB: 32
processManagement:
  fork: true
systemLog:
  destination: file
  path: /apps/mongodb/log/mongod-shard-rs5.log
  logAppend: true
#security:
#  keyFile: /apps/mongodb/config/mongodb-keyfile
#  authorization: 'enabled'

vi /apps/mongodb/config/shard-rs6.conf

sharding:
  clusterRole: shardsvr
net:
  port: 30006
bindIp: 0.0.0.0
replication:
  replSetName: "rs6"
storage:
  dbPath: /apps/mongodb/data/rs6
  journal:
    enabled: true
  engine: "wiredTiger"
  wiredTiger:
    engineConfig:
      cacheSizeGB: 32
processManagement:
  fork: true
systemLog:
  destination: file
  path: /apps/mongodb/log/mongod-shard-rs6.log
  logAppend: true
#security:
# keyFile: /apps/mongodb/config/mongodb-keyfile
# authorization: 'enabled'

vi /apps/mongodb/config/mongos.conf

sharding:
  configDB: configRepl/172.16.1.24:40001,172.16.1.25:40001,172.16.1.26:40001
net:
  port: 20001
bindIp: 0.0.0.0
processManagement:
  fork: true
systemLog:
  destination: file
  path: /apps/mongodb/log/mongos.log
  logAppend: true
#security:
# keyFile: /apps/mongodb/config/mongodb-keyfile

mongo-1 Server

vi /apps/mongodb/config/arbiter-rs4.conf

#arbiter-rs4
replication:
  replSetName: "rs4"
net:
  port : 30004
  bindIp: 0.0.0.0
processManagement:
  fork: true

systemLog:
  destination: file
  path: /apps/mongodb/log/arbiter-rs4.log
  logAppend: true
storage:
  dbPath: "/apps/mongodb/data/arbiter-rs4"
  directoryPerDB: true
  journal:
    enabled: true

#security:
#  keyFile: /apps/mongodb/config/mongodb-keyfile

vi /apps/mongodb/config/arbiter-rs6.conf

#arbiter-rs6
replication:
  replSetName: "rs6"
net:
  port : 30006
  bindIp: 0.0.0.0
processManagement:
  fork: true

systemLog:
  destination: file
  path: /apps/mongodb/log/arbiter-rs6.log
  logAppend: true
storage:
  dbPath: "/apps/mongodb/data/arbiter-rs6"
  directoryPerDB: true
  journal:
    enabled: true

#security:
#  keyFile: /apps/mongodb/config/mongodb-keyfile

rm -rf /apps/mongodb/config/shard-rs4.conf

rm -rf /apps/mongodb/config/shard-rs6.conf

rm -rf /apps/mongodb/data/rs4

rm -rf /apps/mongodb/data/rs6

mongod -f /apps/mongodb/config/config.conf

mongod -f /apps/mongodb/config/arbiter-rs4.conf

mongod -f /apps/mongodb/config/arbiter-rs6.conf

mongod -f /apps/mongodb/config/shard-rs1.conf
mongod -f /apps/mongodb/config/shard-rs2.conf
mongod -f /apps/mongodb/config/shard-rs3.conf
mongod -f /apps/mongodb/config/shard-rs5.conf

mongo-2 Server

vi /apps/mongodb/config/arbiter-rs2.conf

#arbiter-rs2
replication:
  replSetName: "rs2"
net:
  port : 30002
  bindIp: 0.0.0.0
processManagement:
  fork: true

systemLog:
  destination: file
  path: /apps/mongodb/log/arbiter-rs2.log
  logAppend: true
storage:
  dbPath: "/apps/mongodb/data/arbiter-rs2"
  directoryPerDB: true
  journal:
    enabled: true

#security:
#  keyFile: /apps/mongodb/config/mongodb-keyfile

vi /apps/mongodb/config/arbiter-rs5.conf

#arbiter-rs5
replication:
  replSetName: "rs5"
net:
  port : 30005
  bindIp: 0.0.0.0
processManagement:
  fork: true

systemLog:
  destination: file
  path: /apps/mongodb/log/arbiter-rs5.log
  logAppend: true
storage:
  dbPath: "/apps/mongodb/data/arbiter-rs5"
  directoryPerDB: true
  journal:
    enabled: true

#security:
#  keyFile: /apps/mongodb/config/mongodb-keyfile

rm -rf /apps/mongodb/config/shard-rs2.conf

rm -rf /apps/mongodb/config/shard-rs5.conf

rm -rf /apps/mongodb/data/rs2

rm -rf /apps/mongodb/data/rs5

mongod -f /apps/mongodb/config/config.conf

mongod -f /apps/mongodb/config/arbiter-rs2.conf

mongod -f /apps/mongodb/config/arbiter-rs5.conf

mongod -f /apps/mongodb/config/shard-rs1.conf
mongod -f /apps/mongodb/config/shard-rs3.conf
mongod -f /apps/mongodb/config/shard-rs4.conf
mongod -f /apps/mongodb/config/shard-rs6.conf

mongo-3 Server

vi /apps/mongodb/config/arbiter-rs1.conf

replication:
  replSetName: "rs1"
net:
  port : 30001
  bindIp: 0.0.0.0

processManagement:
  fork: true
systemLog:
  destination: file
  path: /apps/mongodb/log/arbiter-rs1.log
  logAppend: true
storage:
  dbPath: "/apps/mongodb/data/arbiter-rs1"
  directoryPerDB: true
  journal:
    enabled: true

#security:
#  keyFile: /apps/mongodb/config/mongodb-keyfile

vi /apps/mongodb/config/arbiter-rs3.conf

replication:
  replSetName: "rs3"
net:
  port : 30003
  bindIp: 0.0.0.0

processManagement:
  fork: true
systemLog:
  destination: file
  path: /apps/mongodb/log/arbiter-rs3.log
  logAppend: true
storage:
  dbPath: "/apps/mongodb/data/arbiter-rs3"
  directoryPerDB: true
  journal:
    enabled: true

#security:
#  keyFile: /apps/mongodb/config/mongodb-keyfile

rm -rf /apps/mongodb/config/shard-rs1.conf

rm -rf /apps/mongodb/config/shard-rs3.conf

rm -rf /apps/mongodb/data/rs1

rm -rf /apps/mongodb/data/rs3

mongod -f /apps/mongodb/config/config.conf

mongod -f /apps/mongodb/config/arbiter-rs1.conf

mongod -f /apps/mongodb/config/arbiter-rs3.conf

mongod -f /apps/mongodb/config/shard-rs2.conf
mongod -f /apps/mongodb/config/shard-rs4.conf
mongod -f /apps/mongodb/config/shard-rs5.conf
mongod -f /apps/mongodb/config/shard-rs6.conf

Config Repl

mongosh --port 40001

use admin

rs.initiate()

rs.add("Mongo-2:40001");

rs.add("Mongo-3:40001");

rs.status() // 확인 stateStr 항목에 Primary 1개와 Secondary 2개가 확인된다.

configRepl [direct: other] admin> rs.status()
{
  set: 'configRepl',
  date: ISODate("2022-11-09T07:54:25.549Z"),
  myState: 1,
  term: Long("1"),
  syncSourceHost: '',
  syncSourceId: -1,
  configsvr: true,
  heartbeatIntervalMillis: Long("2000"),
  majorityVoteCount: 2,
  writeMajorityCount: 2,
  votingMembersCount: 3,
  writableVotingMembersCount: 3,
  optimes: {
    lastCommittedOpTime: { ts: Timestamp({ t: 1667980464, i: 1 }), t: Long("1") },
    lastCommittedWallTime: ISODate("2022-11-09T07:54:24.737Z"),
    readConcernMajorityOpTime: { ts: Timestamp({ t: 1667980464, i: 1 }), t: Long("1") },
    appliedOpTime: { ts: Timestamp({ t: 1667980464, i: 1 }), t: Long("1") },
    durableOpTime: { ts: Timestamp({ t: 1667980464, i: 1 }), t: Long("1") },
    lastAppliedWallTime: ISODate("2022-11-09T07:54:24.737Z"),
    lastDurableWallTime: ISODate("2022-11-09T07:54:24.737Z")
  },
  lastStableRecoveryTimestamp: Timestamp({ t: 1667980437, i: 1 }),
  electionCandidateMetrics: {
    lastElectionReason: 'electionTimeout',
    lastElectionDate: ISODate("2022-11-09T07:53:57.654Z"),
    electionTerm: Long("1"),
    lastCommittedOpTimeAtElection: { ts: Timestamp({ t: 1667980437, i: 1 }), t: Long("-1") },
    lastSeenOpTimeAtElection: { ts: Timestamp({ t: 1667980437, i: 1 }), t: Long("-1") },
    numVotesNeeded: 1,
    priorityAtElection: 1,
    electionTimeoutMillis: Long("10000"),
    newTermStartDate: ISODate("2022-11-09T07:53:57.664Z"),
    wMajorityWriteAvailabilityDate: ISODate("2022-11-09T07:53:57.717Z")
  },
  members: [
    {
      _id: 0,
      name: 'Mongo-1:40001',
      health: 1,
      state: 1,
      stateStr: 'PRIMARY',
      uptime: 165,
      optime: { ts: Timestamp({ t: 1667980464, i: 1 }), t: Long("1") },
      optimeDate: ISODate("2022-11-09T07:54:24.000Z"),
      lastAppliedWallTime: ISODate("2022-11-09T07:54:24.737Z"),
      lastDurableWallTime: ISODate("2022-11-09T07:54:24.737Z"),
      syncSourceHost: '',
      syncSourceId: -1,
      infoMessage: 'Could not find member to sync from',
      electionTime: Timestamp({ t: 1667980437, i: 2 }),
      electionDate: ISODate("2022-11-09T07:53:57.000Z"),
      configVersion: 5,
      configTerm: 1,
      self: true,
      lastHeartbeatMessage: ''
    },
    {
      _id: 1,
      name: 'Mongo-2:40001',
      health: 1,
      state: 2,
      stateStr: 'SECONDARY',
      uptime: 11,
      optime: { ts: Timestamp({ t: 1667980464, i: 1 }), t: Long("1") },
      optimeDurable: { ts: Timestamp({ t: 1667980464, i: 1 }), t: Long("1") },
      optimeDate: ISODate("2022-11-09T07:54:24.000Z"),
      optimeDurableDate: ISODate("2022-11-09T07:54:24.000Z"),
      lastAppliedWallTime: ISODate("2022-11-09T07:54:24.737Z"),
      lastDurableWallTime: ISODate("2022-11-09T07:54:24.737Z"),
      lastHeartbeat: ISODate("2022-11-09T07:54:25.537Z"),
      lastHeartbeatRecv: ISODate("2022-11-09T07:54:25.542Z"),
      pingMs: Long("0"),
      lastHeartbeatMessage: '',
      syncSourceHost: 'Mongo-1:40001',
      syncSourceId: 0,
      infoMessage: '',
      configVersion: 5,
      configTerm: 1
    },
    {
      _id: 2,
      name: 'Mongo-3:40001',
      health: 1,
      state: 2,
      stateStr: 'SECONDARY',
      uptime: 6,
      optime: { ts: Timestamp({ t: 1667980464, i: 1 }), t: Long("1") },
      optimeDurable: { ts: Timestamp({ t: 1667980464, i: 1 }), t: Long("1") },
      optimeDate: ISODate("2022-11-09T07:54:24.000Z"),
      optimeDurableDate: ISODate("2022-11-09T07:54:24.000Z"),
      lastAppliedWallTime: ISODate("2022-11-09T07:54:24.737Z"),
      lastDurableWallTime: ISODate("2022-11-09T07:54:24.737Z"),
      lastHeartbeat: ISODate("2022-11-09T07:54:25.537Z"),
      lastHeartbeatRecv: ISODate("2022-11-09T07:54:24.043Z"),
      pingMs: Long("0"),
      lastHeartbeatMessage: '',
      syncSourceHost: 'Mongo-2:40001',
      syncSourceId: 1,
      infoMessage: '',
      configVersion: 5,
      configTerm: 1
    }
  ],
  ok: 1,
  lastCommittedOpTime: Timestamp({ t: 1667980464, i: 1 }),
  '$clusterTime': {
    clusterTime: Timestamp({ t: 1667980464, i: 1 }),
    signature: {
      hash: Binary(Buffer.from("0000000000000000000000000000000000000000", "hex"), 0),
      keyId: Long("0")
    }
  },
  operationTime: Timestamp({ t: 1667980464, i: 1 })
}

Mongo-1

mongosh --port 30001

use admin

rs.initiate()

rs.add("Mongo-2:30001");

rs.addArb("Mongo-3:30001");

rs.status()

rs.conf()

cfg=rs.conf()

cfg.members[0].priority=2

rs.reconfig(cfg)

rs.conf() // priority 확인. 높을수록 우선 ( primary )

exit

mongosh --port 30002

use admin

rs.initiate()

rs.add("Mongo-3:30002");

rs.addArb("Mongo-2:30002");

rs.status()

rs.conf()

cfg=rs.conf()

cfg.members[0].priority=2

rs.reconfig(cfg)

rs.conf() // priority 확인. 높을수록 우선 ( primary )

exit

Mongo-2

mongosh --port 30003

use admin

rs.initiate()

rs.add("Mongo-1:30003");

rs.addArb("Mongo-3:30003");

rs.status()

rs.conf()

cfg=rs.conf()

cfg.members[0].priority=2

rs.reconfig(cfg)

rs.conf() // priority 확인. 높을수록 우선 ( primary )

exit

mongosh --port 30004

use admin

rs.initiate()

rs.add("Mongo-3:30004");

rs.addArb("Mongo-1:30004");

rs.status()

rs.conf()

cfg=rs.conf()

cfg.members[0].priority=2

rs.reconfig(cfg)

rs.conf() // priority 확인. 높을수록 우선 ( primary )

exit

Mongo-3

mongosh --port 30005

use admin

rs.initiate()

rs.add("Mongo-1:30005");

rs.addArb("Mongo-2:30005");

rs.status()

rs.conf()

cfg=rs.conf()

cfg.members[0].priority=2

rs.reconfig(cfg)

rs.conf() // priority 확인. 높을수록 우선 ( primary )

exit

mongosh --port 30006

use admin

rs.initiate()

rs.add("Mongo-2:30006");

rs.addArb("Mongo-1:30006");

rs.status()

rs.conf()

cfg=rs.conf()

cfg.members[0].priority=2

rs.reconfig(cfg)

rs.conf() // priority 확인. 높을수록 우선 ( primary )

exit

Mongos Server

## Mongos에서 리플리카셋이 존재하는경우 반드시 필요한 옵션

P와 S간 정합성을 위해 필요하며 1로 설정시 P에만 쓰기가 완료되면 응답한다.

2일경우 리플리카멤버중 2개의 쓰기를 완료한 후 응답한다.

readPreference값이 Primary 일 경우 상기 값은 1로만 설정되어도 무관할 것으로 보인다. ( Default Primary )

쓰기와 읽기를 나눠주는 옵션으로 처리할 경우 적절한 값을 설정하지 않으면 쓰기가 완료되지 않은 상태에서 데이터를 요청하는 경우 에러가 발생 할 수 있다.

mongosh --port 20001

설정 추가

db.adminCommand({
setDefaultRWConcern : 1,
defaultWriteConcern: { w: 1 },
})

설정 확인

db.adminCommand(
{
getDefaultRWConcern: 1
}
)

sh.addShard("rs1/Mongo-1:30001");

sh.addShard("rs2/Mongo-1:30002");

sh.addShard("rs3/Mongo-2:30003");

sh.addShard("rs4/Mongo-2:30004");

sh.addShard("rs5/Mongo-3:30005");

sh.addShard("rs6/Mongo-3:30006");

추가 완료되면 상태를 확인 할 수 있다.

sh.status()

ETC

WARNING: Arbiters are not supported in quarterly binary versions

-> 리플리카셋이 동작하고 있는 노드에서 아비터 구동시 나오는 경고메세지, 현재 구성에서는 아비터가 속해있는 리플리카셋과 함께 있지 않음으로 무관하다고 생각된다.

참고자료

https://www.mongodb.com/docs/manual/core/replica-set-arbiter/

Monitoring

mongosh --port 30001 ~ 30006

활성화

db.enableFreeMonitoring()

비활성화

db.disableFreeMonitoring()

활성화하면 링크가 보이고 그링크로 접속할 경우 각 정보를 확인 할 수 있다.

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현재글MongoDB 6.0.2 sharding replica set

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