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Docker 安装MongoDB分片集群

2017-06-22
luamas

docker下面做分片集群看似简单,其实坑还是很多的,下面总结下。

直接看docker-compose.yml文件

version: '3'
services:
  csrs1:
    image: mongo:latest
    volumes:
      - /data/mongodb/cs/rs1:/data/db
    command: mongod --auth --configsvr --replSet csrs --dbpath /data/db
  csrs2:
    image: mongo:latest
    volumes:
      - /data/mongodb/cs/rs2:/data/db
    command: mongod --auth --configsvr --replSet csrs --dbpath /data/db
  csrs3:
    image: mongo:latest
    volumes:
      - /data/mongodb/cs/rs3:/data/db
    command: mongod --auth --configsvr --replSet csrs --dbpath /data/db
  mongos:
    image: mongo:latest
    volumes:
      - /data/mongodb/key.d/keyfile:/opt/keyfile
    command: mongos --configdb csrs/csrs1:27019,csrs2:27019,csrs3:27019
    ports:
      - "27017:27017"
  shrs1:
    image: mongo:latest
    volumes:
      - /data/mongodb/sh/rs1:/data/db
    command: mongod --auth --dbpath /data/db --shardsvr --replSet shrs
  shrs2:
    image: mongo:latest
    volumes:
      - /data/mongodb/sh/rs2:/data/db
    command: mongod --auth --dbpath /data/db --shardsvr --replSet shrs
  shrs3:
    image: mongo:latest
    volumes:
      - /data/mongodb/sh/rs3:/data/db
    command: mongod --auth --dbpath /data/db --shardsvr --replSet shrs

启动docker

docker-compose up -d

采用docker ps看下是否都已经启动成功

配置config server

docker-compose exec csrs1 mongo --port 27019
rs.initiate()
var cfg = rs.conf()
cfg.members[0].host = 'csrs1:27019'
rs.reconfig(cfg)
rs.add('csrs2:27019')
rs.add('csrs3:27019')
rs.status() //查看状态
exit

config server 默认端口为 27019

配置shard server

docker-compose exec shrs1 mongo --port 27018
rs.initiate()
var cfg = rs.conf()
cfg.members[0].host = 'shrs1:27018'
rs.reconfig(cfg)
rs.add('shrs2:27018')
rs.addArb('shrs3:27018') //作为仲裁使用,实际中一主,两副,一仲裁
rs.status() //查看状态
exit

shard server 默认端口号为 27018

配置 mongos

docker-compose exec mongos mongo
sh.addShard('shrs/shrs1:27018')
sh.status() //查看状态
exit

##授权模式登陆

创建keyfile文件

mkdir /data/mongodb/key.d
cd /data/mongodb/key.d
openssl rand -base64 741 > keyfile //确认自己是否已安装openssl,生成的字符数要求在6到1024个字符之间
chmod 600 keyfile   //不要给的权限太大,否则会入坑
sudo chown 999 keyfile  //这个一定要执行,否则还是没有权限

创建用户

我们在无授权验证模式下创建用户

docker-compose exec mongos mongo
use admin
db.createUser( {
 user: "test",
 pwd: "test",
 roles: [ { role: "root", db: "admin" } ]
}); //我们给到root权限,具体有什么权限可以查看官方文档
db.auth("test","test") //验证用户,返回1代表正确
exit

docker-compose exec shrs1 mongo --port 27018
use admin
db.createUser( {
 user: "test",
 pwd: "test",
 roles: [ { role: "root", db: "admin" } ]
}); //我们给到root权限,具体有什么权限可以查看官方文档
db.auth("test","test") //验证用户,返回1代表正确
exit

修改docker-compose。yml文件

version: '3'
services:
  csrs1:
    image: mongo:latest
    volumes:
      - /data/mongodb/cs/rs1:/data/db
      - /data/mongodb/key.d/keyfile:/opt/keyfile
    command: mongod --auth --configsvr --replSet csrs --dbpath /data/db --keyFile /opt/keyfile
  csrs2:
    image: mongo:latest
    volumes:
      - /data/mongodb/cs/rs2:/data/db
      - /data/mongodb/key.d/keyfile:/opt/keyfile
    command: mongod --auth --configsvr --replSet csrs --dbpath /data/db --keyFile /opt/keyfile
  csrs3:
    image: mongo:latest
    volumes:
      - /data/mongodb/cs/rs3:/data/db
      - /data/mongodb/key.d/keyfile:/opt/keyfile
    command: mongod --auth --configsvr --replSet csrs --dbpath /data/db --keyFile /opt/keyfile
  mongos:
    image: mongo:latest
    volumes:
      - /data/mongodb/key.d/keyfile:/opt/keyfile
    command: mongos --configdb csrs/csrs1:27019,csrs2:27019,csrs3:27019 --keyFile /opt/keyfile
    ports:
      - "27017:27017"
  shrs1:
    image: mongo:latest
    volumes:
      - /data/mongodb/sh/rs1:/data/db
      - /data/mongodb/key.d/keyfile:/opt/keyfile
    command: mongod --auth --dbpath /data/db --shardsvr --replSet shrs --keyFile /opt/keyfile
  shrs2:
    image: mongo:latest
    volumes:
      - /data/mongodb/sh/rs2:/data/db
      - /data/mongodb/key.d/keyfile:/opt/keyfile
    command: mongod --auth --dbpath /data/db --shardsvr --replSet shrs --keyFile /opt/keyfile
  shrs3:
    image: mongo:latest
    volumes:
      - /data/mongodb/sh/rs3:/data/db
      - /data/mongodb/key.d/keyfile:/opt/keyfile
    command: mongod --auth --dbpath /data/db --shardsvr --replSet shrs --keyFile /opt/keyfile

注意上面的mongos,它没有--auth

我们执行下列命令即可重启docker,注意要在docker-compose下面执行docker-compose up -d

至此结束


如要转载,请保持本文完整,并注明作者luamas和本文原始地址:http://blog.luamas.com/2017/06/22/docker-mongodb/

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