MongoDB Replica Set

출처 : https://devs0n.tistory.com/43

• 파일 생성

/home/ubuntu/mongod/docker-compose.yml

version: "3.6"

services:
  mongo-1:
    image: mongo:4.4
    container_name: mongo-1
    ports:
      - "30000:30000"
    command: mongod --replSet replset --port 30000 **--bind_ip 0.0.0.0**

  mongo-2:
    image: mongo:4.4
    container_name: mongo-2
    ports:
      - "30001:30001"
    command: mongod --replSet replset --port 30001 **--bind_ip 0.0.0.0**

  mongo-3:
    image: mongo:4.4
    container_name: mongo-3
    ports:
      - "30002:30002"
    command: mongod --replSet replset --port 30002 **--bind_ip 0.0.0.0**

C:\Windows\System32\drivers\etc\hosts 추가 (MongoDB IP)

**192.168.0.53** mongo-1
192.168.0.53 mongo-2
192.168.0.53 mongo-3

시작 
docker compose up &

종료
docker compose down

**도커에 접속** 

docker exec -it mongo-1 mongo --port 30000

**mongod  1 :** PRIMARY
**mongod  2 :** SECONDARY
**mongod  3 :** SECONDARY

> config = {
	"_id" : "replset", // docker-compose에 있는 replSet과 동일하게
	"members" : [
		{
			"_id" : 0,
			"host" : "mongo-1:30000"
		},
		{
			"_id" : 1,
			"host" : "mongo-2:30001"
		},
		{
			"_id" : 2,
			"host" : "mongo-3:30002"
		}
	]
}
 
> rs.initiate(config);
{ "ok" : 1 }

**mongod  1]**
**샘플데이터 입력** 
db.wallets.insert(
  { 
    wid: 4,
    uid: "11e035c6-ed09-4c91-aae7-50a72ea3f344",
    ucPubkey:   "0x029c8804e80db19ffe796746ae70c04f25e137c14b08d3e1ea925b92b734812632", 
    created: "2022-08-11T14:00:51.059Z" 
  }
)

**샘플 데이터 확인**
> db.wallets.find({})
{ "_id" : ObjectId("63acdad42c351689ae8b3af7"), "wid" : 4, "uid" : "11e035c6-ed09-4c91-aae7-50a72ea3f344", "ucPubkey" : "0x029c8804e80db19ffe796746ae70c04f25e137c14b08d3e1ea925b92b734812632", "created" : "2022-08-11T14:00:51.059Z" }
>

• Robo 3T docker compass 접속 정보 설정

• docker compass 왼쪽 확인

SECONDARY에 접근하기 위한 명령어

**mongod  2] , mongod  3]**

replset:SECONDARY> rs.slaveOk()

• mongod 1] , mongod 2] , mongod 3] 데이터 동일 여부 확인
  • 파일 생성
  /home/ubuntu/mongod/docker-compose.ymlC:\Windows\System32\drivers\etc\hosts 추가 (MongoDB IP)

  시작 
  docker compose up &
  
  종료
  docker compose down
  

  **도커에 접속** 
  
  docker exec -it mongo-1 mongo --port 30000
  
  **mongod  1 :** PRIMARY
  **mongod  2 :** SECONDARY
  **mongod  3 :** SECONDARY
  
  > config = {
  	"_id" : "replset", // docker-compose에 있는 replSet과 동일하게
  	"members" : [
  		{
  			"_id" : 0,
  			"host" : "mongo-1:30000"
  		},
  		{
  			"_id" : 1,
  			"host" : "mongo-2:30001"
  		},
  		{
  			"_id" : 2,
  			"host" : "mongo-3:30002"
  		}
  	]
  }
   
  > rs.initiate(config);
  { "ok" : 1 }
  
  **mongod  1]**
  **샘플데이터 입력** 
  db.wallets.insert(
    { 
      wid: 4,
      uid: "11e035c6-ed09-4c91-aae7-50a72ea3f344",
      ucPubkey:   "0x029c8804e80db19ffe796746ae70c04f25e137c14b08d3e1ea925b92b734812632", 
      created: "2022-08-11T14:00:51.059Z" 
    }
  )
  
  **샘플 데이터 확인**
  > db.wallets.find({})
  { "_id" : ObjectId("63acdad42c351689ae8b3af7"), "wid" : 4, "uid" : "11e035c6-ed09-4c91-aae7-50a72ea3f344", "ucPubkey" : "0x029c8804e80db19ffe796746ae70c04f25e137c14b08d3e1ea925b92b734812632", "created" : "2022-08-11T14:00:51.059Z" }
  >
  
  

  • Robo 3T docker compass 접속 정보 설정
  
  
  • docker compass 왼쪽 확인
  
  

  **mongod  2] , mongod  3]**
  
  replset:SECONDARY> rs.slaveOk()
  

  • mongod 1] , mongod 2] , mongod 3] 데이터 동일 여부 확인