使用docker部署mongo集群

柔情只为你懂 2022-04-24 12:42 384阅读 0赞

> [MongoDB 的 Docker 常用命令][MongoDB _ Docker]
> 
> [Docker下，实战mongodb副本集（Replication）][Docker_mongodb_Replication]

# 下载镜像
    docker pull mongo
    
    # 创建并运行单节点实例
    docker run -p 27017:27017 -v ~/code/Tools/mongo/data:/data/db --name mongodb -d mongo

*  基于`docker network`创建局域网

# 查看已有network列表
    docker network ls
    # 移除已创建的网络
    docker network rm mongo-network
    
    # 初始化 Swarm
    docker swarm init
    docker swarm join-token manager
    
    # 创建桥接网络，在网段 172.28.0.0/16 上创建网关为 172.28.5.254 、IP范围为 172.28.5.0/24 的桥接网络
    docker network create \
      --driver=bridge \
      --subnet=172.28.0.0/16 \
      --ip-range=172.28.5.0/24 \
      --gateway=172.28.5.254 \
      br0
    # 查看网络详情
    docker network inspect br0

*  创建并部署集群实例

# 创建主节点，并加入mongo-network网络，指定ip；并将mongo监听绑定到ip上
    docker run --name m0 -p 27017:27017 \
    --network br0 \
    --ip 172.28.5.100 \
    -v ~/code/Tools/mongo/data0:/data/db \
    -d mongo /bin/bash -c 'mongod --replSet replset0 --bind_ip_all'
    
    # 创建复制节点，并加入mongo-network网络，指定ip；并将mongo监听绑定到ip上;指定不同端口
    docker run --name m1 -p 27018:27018 \
    --network br0 \
    --ip 172.28.5.101 \
    -v ~/code/Tools/mongo/data1:/data/db \
    -d mongo /bin/bash -c 'mongod --replSet replset0 --bind_ip_all --port 27018'
    
    # 查看节点ip
    docker exec m0 cat /etc/hosts
    docker exec m1 cat /etc/hosts
    # 配置集群
    docker exec -it m0 bash
    # 执行命令进行mongo控制台
    mongo 172.28.5.100:27017
    # 使用admin数据库
    use admin
    # 添加配置
    config = {  _id:"replset0", members:[{ _id:0,host:"172.28.5.100:27017"},{ _id:1,host:"172.28.5.101:27018"}]}
    rs.initiate(config)
    # 返回如下结果
    { 
      "ok" : 1,
      "operationTime" : Timestamp(1556158794, 1),
      "$clusterTime" : { 
        "clusterTime" : Timestamp(1556158794, 1),
        "signature" : { 
          "hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
          "keyId" : NumberLong(0)
        }
      }
    }
    # 进入副本节点
    docker exec -it m1 mongo 172.28.5.101:27018
    # 允许副本节点进行读操作
    db.getMongo().setSlaveOk()
    
    # 查看状态
    rs.status()

最终结果

{
    	"set" : "replset0",
    	"date" : ISODate("2019-04-26T09:14:56.070Z"),
    	"myState" : 2,
    	"term" : NumberLong(3),
    	"syncingTo" : "172.28.5.101:27018",
    	"syncSourceHost" : "172.28.5.101:27018",
    	"syncSourceId" : 1,
    	"heartbeatIntervalMillis" : NumberLong(2000),
    	"optimes" : {
    		"lastCommittedOpTime" : {
    			"ts" : Timestamp(1556270095, 1),
    			"t" : NumberLong(3)
    		},
    		"readConcernMajorityOpTime" : {
    			"ts" : Timestamp(1556270095, 1),
    			"t" : NumberLong(3)
    		},
    		"appliedOpTime" : {
    			"ts" : Timestamp(1556270095, 1),
    			"t" : NumberLong(3)
    		},
    		"durableOpTime" : {
    			"ts" : Timestamp(1556270095, 1),
    			"t" : NumberLong(3)
    		}
    	},
    	"lastStableCheckpointTimestamp" : Timestamp(1556190289, 1),
    	"members" : [
    		{
    			"_id" : 0,
    			"name" : "172.28.5.100:27017",
    			"health" : 1,
    			"state" : 2,
    			"stateStr" : "SECONDARY",
    			"uptime" : 68,
    			"optime" : {
    				"ts" : Timestamp(1556270095, 1),
    				"t" : NumberLong(3)
    			},
    			"optimeDate" : ISODate("2019-04-26T09:14:55Z"),
    			"syncingTo" : "172.28.5.101:27018",
    			"syncSourceHost" : "172.28.5.101:27018",
    			"syncSourceId" : 1,
    			"infoMessage" : "",
    			"configVersion" : 1,
    			"self" : true,
    			"lastHeartbeatMessage" : ""
    		},
    		{
    			"_id" : 1,
    			"name" : "172.28.5.101:27018",
    			"health" : 1,
    			"state" : 1,
    			"stateStr" : "PRIMARY",
    			"uptime" : 41,
    			"optime" : {
    				"ts" : Timestamp(1556270085, 1),
    				"t" : NumberLong(3)
    			},
    			"optimeDurable" : {
    				"ts" : Timestamp(1556270085, 1),
    				"t" : NumberLong(3)
    			},
    			"optimeDate" : ISODate("2019-04-26T09:14:45Z"),
    			"optimeDurableDate" : ISODate("2019-04-26T09:14:45Z"),
    			"lastHeartbeat" : ISODate("2019-04-26T09:14:55.413Z"),
    			"lastHeartbeatRecv" : ISODate("2019-04-26T09:14:54.927Z"),
    			"pingMs" : NumberLong(0),
    			"lastHeartbeatMessage" : "",
    			"syncingTo" : "",
    			"syncSourceHost" : "",
    			"syncSourceId" : -1,
    			"infoMessage" : "",
    			"electionTime" : Timestamp(1556270064, 1),
    			"electionDate" : ISODate("2019-04-26T09:14:24Z"),
    			"configVersion" : 1
    		}
    	],
    	"ok" : 1,
    	"operationTime" : Timestamp(1556270095, 1),
    	"$clusterTime" : {
    		"clusterTime" : Timestamp(1556270095, 1),
    		"signature" : {
    			"hash" : BinData(0,"AAAAAAAAAAAAAAAAAAAAAAAAAAA="),
    			"keyId" : NumberLong(0)
    		}
    	}
    }

*  `docker` 外部访问

本地，非`docker`环境可使用 `mongodb://localhost:27017` 访问主节点，使用 `mongodb://localhost:27018` 访问复制节点

[MongoDB _ Docker]: https://www.jianshu.com/p/6fdb2bcb4b43
[Docker_mongodb_Replication]: https://blog.csdn.net/boling_cavalry/article/details/78173636