前往小程序，Get更优阅读体验！
立即前往
文档建议反馈控制台
首页
学习
活动
专区
工具
TVP
最新优惠活动
文章/答案/技术大牛
发布
首页
学习
活动
专区
工具
TVP最新优惠活动
返回腾讯云官网
社区首页 >专栏 >docker-swarm部署mongo分片集群

docker-swarm部署mongo分片集群

作者头像
kinnylee
发布于 2020-10-15 10:12:37
1.3K0
发布于 2020-10-15 10:12:37
举报
文章被收录于专栏：kinnylee钻研技术

概述

  • 本文主要介绍在docker-swarm环境下搭建mongo分片集群。
  • 本文以授权模式创建集群，但是如果之间启动授权的脚本，将无法创建用户。需要在无授权模式下把用户创建好，然后再以授权模式重启。（这两种模式启动脚本不同，但是挂载同一个文件目录）

架构图

  • 共三个节点：breakpad（主服务器），bpcluster,bogon

前置步骤

  • 安装docker
  • 初始化swarm集群
    • docker swarm init

部署步骤

前面三步执行完集群就可以使用了，不需要授权登录可不用执行后面4个步骤

  1. 创建目录
  2. 部署服务（无授权模式）
  3. 配置分片信息
  4. 生成keyfile文件，并修改权限
  5. 拷贝keyfile到其他节点
  6. 添加用户信息
  7. 重启服务（授权模式）

1. 创建目录

在所有服务器执行before-deploy.sh

代码语言：javascript
复制
#!/bin/bash

DIR=/data/fates
DATA_PATH="${DIR}/mongo"
PWD='1qaz2wsx!@#'

DATA_DIR_LIST=('config' 'shard1' 'shard2' 'shard3' 'script')

function check_directory() {
  if [ ! -d "${DATA_PATH}" ]; then
    echo "create directory: ${DATA_PATH}"
    echo ${PWD} | sudo -S mkdir -p ${DATA_PATH}
  else
    echo "directory ${DATA_PATH} already exists."
  fi


  cd "${DATA_PATH}"

  for SUB_DIR in ${DATA_DIR_LIST[@]}
  do
    if [ ! -d "${DATA_PATH}/${SUB_DIR}" ]; then
      echo "create directory: ${DATA_PATH}/${SUB_DIR}"
      echo ${PWD} | sudo -S mkdir -p "${DATA_PATH}/${SUB_DIR}"
    else
      echo "directory: ${DATA_PATH}/${SUB_DIR} already exists."
    fi
  done

  echo ${PWD} | sudo -S chown -R $USER:$USER "${DATA_PATH}"
}

check_directory

2. 无授权模式启动mongo集群

  • 这一步还没有授权，无需登录就可以操作，用于创建用户

在主服务器下创建fate-mongo.yaml，并执行以下脚本(注意根据自己的机器名称修改constraints属性)

代码语言：javascript
复制
docker stack deploy -c fates-mongo.yaml fates-mongo
代码语言：javascript
复制
version: '3.4'
services:
  shard1-server1:
    image: mongo:4.0.5
    # --shardsvr: 这个参数仅仅只是将默认的27017端口改为27018,如果指定--port参数，可用不需要这个参数
    # --directoryperdb：每个数据库使用单独的文件夹
    command: mongod --shardsvr --directoryperdb --replSet shard1
    networks:
      - mongo
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/fates/mongo/shard1:/data/db
    deploy:
      restart_policy:
        condition: on-failure
      replicas: 1
      placement:
        constraints:
          - node.hostname==bpcluster
  shard2-server1:
    image: mongo:4.0.5
    command: mongod --shardsvr --directoryperdb --replSet shard2
    networks:
      - mongo
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/fates/mongo/shard2:/data/db
    deploy:
      restart_policy:
        condition: on-failure
      replicas: 1
      placement:
        constraints:
          - node.hostname==bpcluster
  shard3-server1:
    image: mongo:4.0.5
    command: mongod --shardsvr --directoryperdb --replSet shard3
    networks:
      - mongo
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/fates/mongo/shard3:/data/db
    deploy:
      restart_policy:
        condition: on-failure
      replicas: 1
      placement:
        constraints:
          - node.hostname==bpcluster
  shard1-server2:
    image: mongo:4.0.5
    command: mongod --shardsvr --directoryperdb --replSet shard1
    networks:
      - mongo
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/fates/mongo/shard1:/data/db
    deploy:
      restart_policy:
        condition: on-failure
      replicas: 1
      placement:
        constraints:
          - node.hostname==bogon
  shard2-server2:
    image: mongo:4.0.5
    command: mongod --shardsvr --directoryperdb --replSet shard2
    networks:
      - mongo
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/fates/mongo/shard2:/data/db
    deploy:
      restart_policy:
        condition: on-failure
      replicas: 1
      placement:
        constraints:
          - node.hostname==bogon
  shard3-server2:
    image: mongo:4.0.5
    command: mongod --shardsvr --directoryperdb --replSet shard3
    networks:
      - mongo
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/fates/mongo/shard3:/data/db
    deploy:
      restart_policy:
        condition: on-failure
      replicas: 1
      placement:
        constraints:
          - node.hostname==bogon
  shard1-server3:
    image: mongo:4.0.5
    command: mongod --shardsvr --directoryperdb --replSet shard1
    networks:
      - mongo
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/fates/mongo/shard1:/data/db
    deploy:
      restart_policy:
        condition: on-failure
      replicas: 1
      placement:
        constraints:
          - node.hostname==breakpad
  shard2-server3:
    image: mongo:4.0.5
    command: mongod --shardsvr --directoryperdb --replSet shard2
    networks:
      - mongo
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/fates/mongo/shard2:/data/db
    deploy:
      restart_policy:
        condition: on-failure
      replicas: 1
      placement:
        constraints:
          - node.hostname==breakpad
  shard3-server3:
    image: mongo:4.0.5
    command: mongod --shardsvr --directoryperdb --replSet shard3
    networks:
      - mongo
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/fates/mongo/shard3:/data/db
    deploy:
      restart_policy:
        condition: on-failure
      replicas: 1
      placement:
        constraints:
          - node.hostname==breakpad
  config1:
    image: mongo:4.0.5
    # --configsvr: 这个参数仅仅是将默认端口由27017改为27019, 如果指定--port可不添加该参数
    command: mongod --configsvr --directoryperdb --replSet fates-mongo-config --smallfiles
    networks:
      - mongo
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/fates/mongo/config:/data/configdb
    deploy:
      restart_policy:
        condition: on-failure
      replicas: 1
      placement:
        constraints:
          - node.hostname==bpcluster
  config2:
    image: mongo:4.0.5
    command: mongod --configsvr --directoryperdb --replSet fates-mongo-config --smallfiles
    networks:
      - mongo
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/fates/mongo/config:/data/configdb
    deploy:
      restart_policy:
        condition: on-failure
      replicas: 1
      placement:
        constraints:
          - node.hostname==bogon
  config3:
    image: mongo:4.0.5
    command: mongod --configsvr --directoryperdb --replSet fates-mongo-config --smallfiles
    networks:
      - mongo
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/fates/mongo/config:/data/configdb
    deploy:
      restart_policy:
        condition: on-failure
      replicas: 1
      placement:
        constraints:
          - node.hostname==breakpad
  mongos:
    image: mongo:4.0.5
    # mongo3.6版默认绑定IP为127.0.0.1，此处绑定0.0.0.0是允许其他容器或主机可以访问
    command: mongos --configdb fates-mongo-config/config1:27019,config2:27019,config3:27019 --bind_ip 0.0.0.0 --port 27017
    networks:
      - mongo
    ports:
      - 27017:27017
    volumes:
      - /etc/localtime:/etc/localtime
    depends_on:
      - config1
      - config2
      - config3
    deploy:
      restart_policy:
        condition: on-failure
      mode: global

networks:
  mongo:
    driver: overlay
    # 如果外部已经创建好网络，下面这句话放开
    # external: true

3. 配置分片信息

代码语言：javascript
复制
# 添加配置服务器
docker exec -it $(docker ps | grep "config" | awk '{ print $1 }') bash -c "echo 'rs.initiate({_id: \"fates-mongo-config\",configsvr: true, members: [{ _id : 0, host : \"config1:27019\" },{ _id : 1, host : \"config2:27019\" }, { _id : 2, host : \"config3:27019\" }]})' | mongo --port 27019"

# 添加分片服务器
docker exec -it $(docker ps | grep "shard1" | awk '{ print $1 }') bash -c "echo 'rs.initiate({_id : \"shard1\", members: [{ _id : 0, host : \"shard1-server1:27018\" },{ _id : 1, host : \"shard1-server2:27018\" },{ _id : 2, host : \"shard1-server3:27018\", arbiterOnly: true }]})' | mongo --port 27018"
docker exec -it $(docker ps | grep "shard2" | awk '{ print $1 }') bash -c "echo 'rs.initiate({_id : \"shard2\", members: [{ _id : 0, host : \"shard2-server1:27018\" },{ _id : 1, host : \"shard2-server2:27018\" },{ _id : 2, host : \"shard3-server3:27018\", arbiterOnly: true }]})' | mongo --port 27018"
docker exec -it $(docker ps | grep "shard3" | awk '{ print $1 }') bash -c "echo 'rs.initiate({_id : \"shard3\", members: [{ _id : 0, host : \"shard3-server1:27018\" },{ _id : 1, host : \"shard2-server2:27018\" },{ _id : 2, host : \"shard3-server3:27018\", arbiterOnly: true }]})' | mongo --port 27018"

# 添加分片集群到mongos中
docker exec -it $(docker ps | grep "mongos" | awk '{ print $1 }') bash -c "echo 'sh.addShard(\"shard1/shard1-server1:27018,shard1-server2:27018,shard1-server3:27018\")' | mongo "
docker exec -it $(docker ps | grep "mongos" | awk '{ print $1 }') bash -c "echo 'sh.addShard(\"shard1/shard2-server1:27018,shard2-server2:27018,shard2-server3:27018\")' | mongo "
docker exec -it $(docker ps | grep "mongos" | awk '{ print $1 }') bash -c "echo 'sh.addShard(\"shard1/shard3-server1:27018,shard3-server2:27018,shard3-server3:27018\")' | mongo "

4. 生成密钥文件

执行前面三步，已经可用确保mongo分片集群启动成功可使用了，如果不需要加授权，后面的步骤不用看。

在主服务器执行generate-keyfile.sh

代码语言：javascript
复制
#!/bin/bash

DATA_PATH=/data/fates/mongo
PWD='1qaz2wsx!@#'

function check_directory() {
  if [ ! -d "${DATA_PATH}" ]; then
    echo "directory: ${DATA_PATH} not exists, please run before-depoly.sh."
  fi
}

function generate_keyfile() {
  cd "${DATA_PATH}/script"
  if [ ! -f "${DATA_PATH}/script/mongo-keyfile" ]; then
    echo 'create mongo-keyfile.'
    openssl rand -base64 756 -out mongo-keyfile
    echo "${PWD}" | sudo -S chmod 600 mongo-keyfile
    echo "${PWD}" | sudo -S chown 999 mongo-keyfile
  else
    echo 'mongo-keyfile already exists.'
  fi
}

check_directory
generate_keyfile

5. 拷贝密钥文件到其他服务器的script目录下

在刚才生成keyfile文件的服务器上执行拷贝（注意-p参数，保留前面修改的权限）

代码语言：javascript
复制
sudo scp -p /data/fates/mongo/script/mongo-keyfile username@server2:/data/fates/mongo/script
sduo scp -p /data/fates/mongo/script/mongo-keyfile username@server3:/data/fates/mongo/script

6. 添加用户信息

在主服务器下执行add-user.sh

脚本给的用户名和密码都是root，权限为root权限。可自定义修改

代码语言：javascript
复制
docker exec -it $(docker ps | grep "mongos" | awk '{ print $1 }') bash -c "echo -e 'use admin\n db.createUser({user:\"root\",pwd:\"root\",roles:[{role:\"root\",db:\"admin\"}]})' | mongo"

7. 创建docker启动的yaml脚本文件（授权）

  • 这一步授权登录，需要输入上一步创建的用户名和密码才可操作

在主服务器下创建fate-mongo-key.yaml，然后再以授权模式重启（脚本不同，挂载路径使用之前的）

代码语言：javascript
复制
docker stack deploy -c fates-mongo-key.yaml fates-mongo
代码语言：javascript
复制
version: '3.4'
services:
  shard1-server1:
    image: mongo:4.0.5
    # --shardsvr: 这个参数仅仅只是将默认的27017端口改为27018,如果指定--port参数，可用不需要这个参数
    # --directoryperdb：每个数据库使用单独的文件夹
    command: mongod --shardsvr --directoryperdb --replSet shard1 --keyFile /data/mongo-keyfile
    networks:
      - mongo
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/fates/mongo/shard1:/data/db
      - /data/fates/mongo/script/mongo-keyfile:/data/mongo-keyfile
    deploy:
      restart_policy:
        condition: on-failure
      replicas: 1
      placement:
        constraints:
          - node.hostname==bpcluster
  shard2-server1:
    image: mongo:4.0.5
    command: mongod --shardsvr --directoryperdb --replSet shard2 --keyFile /data/mongo-keyfile
    networks:
      - mongo
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/fates/mongo/shard2:/data/db
      - /data/fates/mongo/script/mongo-keyfile:/data/mongo-keyfile
    deploy:
      restart_policy:
        condition: on-failure
      replicas: 1
      placement:
        constraints:
          - node.hostname==bpcluster
  shard3-server1:
    image: mongo:4.0.5
    command: mongod --shardsvr --directoryperdb --replSet shard3 --keyFile /data/mongo-keyfile
    networks:
      - mongo
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/fates/mongo/shard3:/data/db
      - /data/fates/mongo/script/mongo-keyfile:/data/mongo-keyfile
    deploy:
      restart_policy:
        condition: on-failure
      replicas: 1
      placement:
        constraints:
          - node.hostname==bpcluster
  shard1-server2:
    image: mongo:4.0.5
    command: mongod --shardsvr --directoryperdb --replSet shard1 --keyFile /data/mongo-keyfile
    networks:
      - mongo
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/fates/mongo/shard1:/data/db
      - /data/fates/mongo/script/mongo-keyfile:/data/mongo-keyfile
    deploy:
      restart_policy:
        condition: on-failure
      replicas: 1
      placement:
        constraints:
          - node.hostname==bogon
  shard2-server2:
    image: mongo:4.0.5
    command: mongod --shardsvr --directoryperdb --replSet shard2 --keyFile /data/mongo-keyfile
    networks:
      - mongo
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/fates/mongo/shard2:/data/db
      - /data/fates/mongo/script/mongo-keyfile:/data/mongo-keyfile
    deploy:
      restart_policy:
        condition: on-failure
      replicas: 1
      placement:
        constraints:
          - node.hostname==bogon
  shard3-server2:
    image: mongo:4.0.5
    command: mongod --shardsvr --directoryperdb --replSet shard3 --keyFile /data/mongo-keyfile
    networks:
      - mongo
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/fates/mongo/shard3:/data/db
      - /data/fates/mongo/script/mongo-keyfile:/data/mongo-keyfile
    deploy:
      restart_policy:
        condition: on-failure
      replicas: 1
      placement:
        constraints:
          - node.hostname==bogon
  shard1-server3:
    image: mongo:4.0.5
    command: mongod --shardsvr --directoryperdb --replSet shard1 --keyFile /data/mongo-keyfile
    networks:
      - mongo
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/fates/mongo/shard1:/data/db
      - /data/fates/mongo/script/mongo-keyfile:/data/mongo-keyfile
    deploy:
      restart_policy:
        condition: on-failure
      replicas: 1
      placement:
        constraints:
          - node.hostname==breakpad
  shard2-server3:
    image: mongo:4.0.5
    command: mongod --shardsvr --directoryperdb --replSet shard2 --keyFile /data/mongo-keyfile
    networks:
      - mongo
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/fates/mongo/shard2:/data/db
      - /data/fates/mongo/script/mongo-keyfile:/data/mongo-keyfile
    deploy:
      restart_policy:
        condition: on-failure
      replicas: 1
      placement:
        constraints:
          - node.hostname==breakpad
  shard3-server3:
    image: mongo:4.0.5
    command: mongod --shardsvr --directoryperdb --replSet shard3 --keyFile /data/mongo-keyfile
    networks:
      - mongo
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/fates/mongo/shard3:/data/db
      - /data/fates/mongo/script/mongo-keyfile:/data/mongo-keyfile
    deploy:
      restart_policy:
        condition: on-failure
      replicas: 1
      placement:
        constraints:
          - node.hostname==breakpad
  config1:
    image: mongo:4.0.5
    # --configsvr: 这个参数仅仅是将默认端口由27017改为27019, 如果指定--port可不添加该参数
    command: mongod --configsvr --directoryperdb --replSet fates-mongo-config --smallfiles --keyFile /data/mongo-keyfile
    networks:
      - mongo
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/fates/mongo/config:/data/configdb
      - /data/fates/mongo/script/mongo-keyfile:/data/mongo-keyfile
    deploy:
      restart_policy:
        condition: on-failure
      replicas: 1
      placement:
        constraints:
          - node.hostname==bpcluster
  config2:
    image: mongo:4.0.5
    command: mongod --configsvr --directoryperdb --replSet fates-mongo-config --smallfiles --keyFile /data/mongo-keyfile
    networks:
      - mongo
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/fates/mongo/config:/data/configdb
      - /data/fates/mongo/script/mongo-keyfile:/data/mongo-keyfile
    deploy:
      restart_policy:
        condition: on-failure
      replicas: 1
      placement:
        constraints:
          - node.hostname==bogon
  config3:
    image: mongo:4.0.5
    command: mongod --configsvr --directoryperdb --replSet fates-mongo-config --smallfiles --keyFile /data/mongo-keyfile
    networks:
      - mongo
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/fates/mongo/config:/data/configdb
      - /data/fates/mongo/script/mongo-keyfile:/data/mongo-keyfile
    deploy:
      restart_policy:
        condition: on-failure
      replicas: 1
      placement:
        constraints:
          - node.hostname==breakpad
  mongos:
    image: mongo:4.0.5
    # mongo3.6版默认绑定IP为127.0.0.1，此处绑定0.0.0.0是允许其他容器或主机可以访问
    command: mongos --configdb fates-mongo-config/config1:27019,config2:27019,config3:27019 --bind_ip 0.0.0.0 --port 27017  --keyFile /data/mongo-keyfile
    networks:
      - mongo
    ports:
      - 27017:27017
    volumes:
      - /etc/localtime:/etc/localtime
      - /data/fates/mongo/script/mongo-keyfile:/data/mongo-keyfile
    depends_on:
      - config1
      - config2
      - config3
    deploy:
      restart_policy:
        condition: on-failure
      mode: global

networks:
  mongo:
    driver: overlay
    # 如果外部已经创建好网络，下面这句话放开
    # external: true

遇到的问题

启动失败

通过docker service logs name查看日志，发现配置文件找不到，因为没有挂载进容器内部

config3启动失败

配置文件中挂载路径写错了

容器启动成功，但是连接失败，被拒绝

只执行了启动容器的脚本，后续的配置都没有设置（第3步）

mongo-keyfile没权限：error opening file: /data/mongo-keyfile: Permission denied

  • mongo-keyfile文件必须修改所有者为999, 权限为600

addShard失败

  • 必须等mongos启动完毕才能执行
  • 根据服务器名称，自动修改脚本里面constraints的属性

分片全部完成后发现数据只保存在一个分片上：

分片的一个chrunk默认200MB，数据量太小，只用一个chunk就够。可修改小这个参数验证效果

本文参与 腾讯云自媒体同步曝光计划，分享自作者个人站点/博客。
如有侵权请联系 cloudcommunity@tencent.com 删除
容器镜像服务
bash
bash 指令
容器

本文分享自 作者个人站点/博客 前往查看

如有侵权，请联系 cloudcommunity@tencent.com 删除。

本文参与 腾讯云自媒体同步曝光计划  ，欢迎热爱写作的你一起参与！

容器镜像服务
bash
bash 指令
容器
评论
登录后参与评论
0 条评论
热度
最新
登录 后参与评论
推荐阅读
LV.
文章
0
获赞
0
目录
  • 概述
  • 架构图
  • 前置步骤
  • 部署步骤
    • 1. 创建目录
      • 2. 无授权模式启动mongo集群
      • 3. 配置分片信息
      • 4. 生成密钥文件
      • 5. 拷贝密钥文件到其他服务器的script目录下
      • 6. 添加用户信息
      • 7. 创建docker启动的yaml脚本文件（授权）
    • 遇到的问题
      • 启动失败
      • config3启动失败
      • 容器启动成功，但是连接失败，被拒绝
      • mongo-keyfile没权限：error opening file: /data/mongo-keyfile: Permission denied
      • addShard失败
      • 分片全部完成后发现数据只保存在一个分片上：
相关产品与服务
容器镜像服务
容器镜像服务（Tencent Container Registry，TCR）为您提供安全独享、高性能的容器镜像托管分发服务。您可同时在全球多个地域创建独享实例，以实现容器镜像的就近拉取，降低拉取时间，节约带宽成本。TCR 提供细颗粒度的权限管理及访问控制，保障您的数据安全。
产品介绍产品文档
11.11 上云拼团GO
领券

腾讯云开发者

扫码关注腾讯云开发者

扫码关注腾讯云开发者

领取腾讯云代金券

热门产品

热门推荐

更多推荐

Copyright © 2013 - 2024 Tencent Cloud. All Rights Reserved. 腾讯云 版权所有 

深圳市腾讯计算机系统有限公司 ICP备案/许可证号：粤B2-20090059 深公网安备号 44030502008569

腾讯云计算（北京）有限责任公司 京ICP证150476号 |  京ICP备11018762号 | 京公网安备号11010802020287

问题归档专栏文章快讯文章归档关键词归档开发者手册归档开发者手册 Section 归档

Copyright © 2013 - 2024 Tencent Cloud.

All Rights Reserved. 腾讯云 版权所有

登录 后参与评论