Docker 部署MongoDb

1. 编写docker-compose.conf 文件

version: '3'
services:
  mongo:
    image: mongo:latest  # 指定 MongoDB 版本，确保 >= 3.6
    container_name: mongo-replica
    restart: always
    command: ["mongod", "--replSet", "rs0", "--oplogSize", "128", "--bind_ip_all"]
    ports:
      - 27017:27017
    volumes:
      - ./mongo_data:/data/db
    environment:
      #初始化MongoDb管理员用户名
      MONGO_INITDB_ROOT_USERNAME: root
      #初始化MongoDb的管理员密码
      MONGO_INITDB_ROOT_PASSWORD: example

2. 启动

在包含 docker-compose.yml 文件的目录中运行以下命令启动 MongoDB：

docker-compose up -d

这将创建一个 MongoDB 副本集实例。--replSet 选项用于指定副本集名称为 rs0，--bind_ip_all 确保 MongoDB 绑定到所有 IP 地址。

本地27017端口映射到容器内部27017端口，把容器内部的/data/db目录挂载当前目录下的mongo_db目录，并且初始化了mongo的管理员用户和密码

3. 验证启动是否成功

命令行验证

docker ps

4. 初始化副本集

1.首次启动容器后，需要初始化 MongoDB 副本集。连接到 MongoDB 并运行以下命令：

docker exec -it mongo-replica mongo

2.然后在 MongoDB shell 中运行以下命令：

rs.initiate()

这样就初始化一个名为 rs0 的副本集。

3.验证配置

在 MongoDB shell 中，可以使用以下命令验证副本集的状态：

rs.status()

rs0:PRIMARY> rs.status()
{
	"set" : "rs0",
	"date" : ISODate("2024-10-24T09:31:21.318Z"),
	"myState" : 1,
	"term" : NumberLong(1),
	"syncingTo" : "",
	"syncSourceHost" : "",
	"syncSourceId" : -1,
	"heartbeatIntervalMillis" : NumberLong(2000),
	"majorityVoteCount" : 1,
	"writeMajorityCount" : 1,
	"optimes" : {
		"lastCommittedOpTime" : {
			"ts" : Timestamp(1729762278, 1),
			"t" : NumberLong(1)
		},
		"lastCommittedWallTime" : ISODate("2024-10-24T09:31:18.528Z"),
		"readConcernMajorityOpTime" : {
			"ts" : Timestamp(1729762278, 1),
			"t" : NumberLong(1)
		},
		"readConcernMajorityWallTime" : ISODate("2024-10-24T09:31:18.528Z"),
		"appliedOpTime" : {
			"ts" : Timestamp(1729762278, 1),
			"t" : NumberLong(1)
		},
		"durableOpTime" : {
			"ts" : Timestamp(1729762278, 1),
			"t" : NumberLong(1)
		},
		"lastAppliedWallTime" : ISODate("2024-10-24T09:31:18.528Z"),
		"lastDurableWallTime" : ISODate("2024-10-24T09:31:18.528Z")
	},
	"lastStableRecoveryTimestamp" : Timestamp(1729762278, 1),
	"lastStableCheckpointTimestamp" : Timestamp(1729762278, 1),
	"electionCandidateMetrics" : {
		"lastElectionReason" : "electionTimeout",
		"lastElectionDate" : ISODate("2024-10-24T07:16:15.041Z"),
		"electionTerm" : NumberLong(1),
		"lastCommittedOpTimeAtElection" : {
			"ts" : Timestamp(0, 0),
			"t" : NumberLong(-1)
		},
		"lastSeenOpTimeAtElection" : {
			"ts" : Timestamp(1729754175, 1),
			"t" : NumberLong(-1)
		},
		"numVotesNeeded" : 1,
		"priorityAtElection" : 1,
		"electionTimeoutMillis" : NumberLong(10000),
		"newTermStartDate" : ISODate("2024-10-24T07:16:15.048Z"),
		"wMajorityWriteAvailabilityDate" : ISODate("2024-10-24T07:16:15.053Z")
	},
	"members" : [
		{
			"_id" : 0,
			"name" : "5ffc77d51cd0:27017",
			"health" : 1,
			"state" : 1,
			"stateStr" : "PRIMARY",
			"uptime" : 8176,
			"optime" : {
				"ts" : Timestamp(1729762278, 1),
				"t" : NumberLong(1)
			},
			"optimeDate" : ISODate("2024-10-24T09:31:18Z"),
			"syncingTo" : "",
			"syncSourceHost" : "",
			"syncSourceId" : -1,
			"infoMessage" : "",
			"electionTime" : Timestamp(1729754175, 2),
			"electionDate" : ISODate("2024-10-24T07:16:15Z"),
			"configVersion" : 1,
			"self" : true,
			"lastHeartbeatMessage" : ""
		}
	],
	"ok" : 1,
	"$clusterTime" : {
		"clusterTime" : Timestamp(1729762278, 1),
		"signature" : {
			"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
			"keyId" : NumberLong(0)
		}
	},
	"operationTime" : Timestamp(1729762278, 1)
}

5. 登陆MongoDb

可以通过mongo客户端或者Docker命令登陆，这里选择使用MongoDb自带的图形化工具进行登录

1.输入host，勾选Direct Connecton

2.点到Authentication,输入用户名密码和认证数据库

3.保存&登录

6. 创建角色和用户

1.点击Open MongoDB shell进入mongo shell

2.创建角色用户分配权限

use admin;
db.createRole(
    {
        role: "flinkrole",
        privileges: [{
            // 所有数据库中所有非系统集合的 grant 权限
            resource: { db: "", collection: "" },
            actions: [
                "splitVector",
                "listDatabases",
                "listCollections",
                "collStats",
                "find",
                "changeStream" ]
        }],
        roles: [
           // 阅读 config.collections 和 config.chunks
           // 用于分片集群快照拆分。
            { role: 'read', db: 'config' }
        ]
    }
);

db.createUser(
  {
      user: 'flinkuser',
      pwd: 'flinkpw',
      roles: [
         { role: 'flinkrole', db: 'admin' }
      ]
  }
);

就可以使用新创建的用户进行登录MongoDb了