使用docker-compose 搭建mongo单节点与副本集

使用docker-compose 搭建mongo单节点与副本集

注：确认已经已经关闭防火墙和selinux和已安装docker

1、单节点安装

1.1 安装docker-compose

1.安装docker-cpmpose
curl -L https://github.com/docker/compose/releases/download/1.23.1/docker-compose-uname -s-uname -m > /usr/local/bin/docker-compose

chmod +x/usr/local/bin/docker-compose

或者去直接下载安装包 https://github.com/docker/compose/releases 

1.2 创建安装yml

mkdir -p /data/mongodb
vim /data/mongodb/mongo.yml

version: '3'
services:
    mongo:
        image: mongo
        container_name: mongodb
        ports:
            - 27017:27017
        volumes:
            - /data/mongodb/data/db:/data/db
            - /data/mongodb/configdb:/data/configdb
            - /data/mongodb/backup:/data/backup
        command:
            ['--auth']
        tty:
            true

1.3 启动mongodb脚本

vim /data/mongo/start_mongodb.sh

docker-compose -f mongo.yml up -d
# 延迟登录，解决可能出现的连接失败问题
sleep 3
# 进入docker容器，以admin用户身份进入mongo
docker exec -it mongodb mongo admin

1.4 mongo常用命令

常用命令使用文档： https://www.runoob.com/mongodb/mongodb-tutorial.html

# 创建用户
db.createUser({user:'zhd',pwd:'123456',roles:[{role:'root',db:'admin'}]})
# 验证用户
db.auth('zhd','123456')
# 创建/切换数据库
use t_zhd
# 创建集合
db.createCollection('zhd')
# 查看集合
show tables
# 插入文档
db.hcy.insert({"zhd":"123"})
# 查询文档
db.hcy.find()
# 查看数据库
show dbs

2、MongoDB副本集集群

2.1.1 生成keyfile

 mkdir /data/mongodb/{mongo-master,mongo-slave1,mongo-slave2} -pv
 cd /data/mongodb/
# 400权限是要保证安全性，否则mongod启动会报错
 openssl rand -base64 756 > mongodb.key
 chmod 400 mongodb.key


 cp mongodb.key /data/mongodb/mongo-master/
 cp mongodb.key /data/mongodb/mongo-slave1/
 cp mongodb.key /data/mongodb/mongo-slave2/

2.1.2 生成yml文件

vim /data/mongodb/mongodb.yml

version: "3"

services:
  #主节点
  mongodb1:
    image: mongo
    container_name: mongo-master
    restart: always
    ports:
      - 27017:27017
    environment:
      - MONGO_INITDB_ROOT_USERNAME=root
      - MONGO_INITDB_ROOT_PASSWORD=mongodb@evescn
    command: mongod --replSet rs0 --keyFile /mongodb.key
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/mongodb/mongo-master/data:/data/db
      - /data/mongodb/mongo-master/configdb:/data/configdb
      - /data/mongodb/mongo-master/mongodb.key:/mongodb.key
    networks:
      - mongoNet
    entrypoint:
      - bash
      - -c
      - |
        chmod 400 /mongodb.key
        chown 999:999 /mongodb.key
        exec docker-entrypoint.sh $$@
  # 副节点
  mongodb2:
    image: mongo
    container_name: mongo-slave1
    restart: always
    ports:
      - 27018:27017
    environment:
      - MONGO_INITDB_ROOT_USERNAME=root
      - MONGO_INITDB_ROOT_PASSWORD=mongodb@evescn
    command: mongod --replSet rs0 --keyFile /mongodb.key
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/mongodb/mongo-slave1/data:/data/db
      - /data/mongodb/mongo-slave1/configdb:/data/configdb
      - /data/mongodb/mongo-slave1/mongodb.key:/mongodb.key
    networks:
      - mongoNet
    entrypoint:
      - bash
      - -c
      - |
        chmod 400 /mongodb.key
        chown 999:999 /mongodb.key
        exec docker-entrypoint.sh $$@
  # 副节点
  mongodb3:
    image: mongo
    container_name: mongo-slave2
    restart: always
    ports:
      - 27019:27017
    environment:
      - MONGO_INITDB_ROOT_USERNAME=root
      - MONGO_INITDB_ROOT_PASSWORD=mongodb@evescn
    command: mongod --replSet rs0 --keyFile /mongodb.key
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/mongodb/mongo-slave2/data:/data/db
      - /data/mongodb/mongo-slave2/configdb:/data/configdb
      - /data/mongodb/mongo-slave2/mongodb.key:/mongodb.key
    networks:
      - mongoNet
    entrypoint:
      - bash
      - -c
      - |
        chmod 400 /mongodb.key
        chown 999:999 /mongodb.key
        exec docker-entrypoint.sh $$@
networks:
  mongoNet:
    driver: bridge

2.1.3 启动和停止服务

docker-compose -f /data/mongodb/mongodb.yml up -d  #启动服务
docker-compose -f /data/mongodb/mongodb.yml down   #停止服务

2.2配置集群

2.2.1 登录容器

docker exec -it mongo-master mongo  #进入容器
# 认证
> use admin
> db.auth('root', 'mongodb@evescn')  #账户密码是配置文件配置的

2.2.2 初始化集群

2.2.2.1添加配置文件

> config={_id:"rs0",members:[ 
{_id:0,host:"192.168.2.11:27017"}, 
{_id:1,host:"192.168.2.11:27018"}, 
{_id:2,host:"192.168.2.11:27019"}] 
}


#rs0 为集群名称，可以任意
#ip填写自己对应的ip

2.2.2.2初始化副本集mongodb-cluster集群

> rs.initiate(config)

2.2.2.5 查看副本集配置信息和运行状态

## 查看副本集配置信息
> rs.conf()

## 查看副本集运行状态：
> rs.status()
............

"members" : [
		{
			"_id" : 0,
			"name" : "192.168.2.11:27017",
			"health" : 1,
			"state" : 1,
			"stateStr" : "PRIMARY",
			"uptime" : 316,
			"optime" : {
				"ts" : Timestamp(1680589697, 1),
				"t" : NumberLong(1)
			},
			"optimeDate" : ISODate("2023-04-04T06:28:17Z"),
			"lastAppliedWallTime" : ISODate("2023-04-04T06:28:17.929Z"),
			"lastDurableWallTime" : ISODate("2023-04-04T06:28:17.929Z"),
			"syncSourceHost" : "",
			"syncSourceId" : -1,
			"infoMessage" : "",
			"electionTime" : Timestamp(1680589607, 1),
			"electionDate" : ISODate("2023-04-04T06:26:47Z"),
			"configVersion" : 1,
			"configTerm" : 1,
			"self" : true,
			"lastHeartbeatMessage" : ""
		},
		{
			"_id" : 1,
			"name" : "192.168.2.11:27018",
			"health" : 1,
			"state" : 2,
			"stateStr" : "SECONDARY",
			"uptime" : 102,
			"optime" : {
				"ts" : Timestamp(1680589697, 1),
				"t" : NumberLong(1)
			},
			"optimeDurable" : {
				"ts" : Timestamp(1680589697, 1),
				"t" : NumberLong(1)
			},
			"optimeDate" : ISODate("2023-04-04T06:28:17Z"),
			"optimeDurableDate" : ISODate("2023-04-04T06:28:17Z"),
			"lastAppliedWallTime" : ISODate("2023-04-04T06:28:17.929Z"),
			"lastDurableWallTime" : ISODate("2023-04-04T06:28:17.929Z"),
			"lastHeartbeat" : ISODate("2023-04-04T06:28:19.957Z"),
			"lastHeartbeatRecv" : ISODate("2023-04-04T06:28:18.991Z"),
			"pingMs" : NumberLong(0),
			"lastHeartbeatMessage" : "",
			"syncSourceHost" : "192.168.2.11:27017",
			"syncSourceId" : 0,
			"infoMessage" : "",
			"configVersion" : 1,
			"configTerm" : 1
		},
		{
			"_id" : 2,
			"name" : "192.168.2.11:27019",
			"health" : 1,
			"state" : 2,
			"stateStr" : "SECONDARY",
			"uptime" : 102,
			"optime" : {
				"ts" : Timestamp(1680589697, 1),
				"t" : NumberLong(1)
			},
.................