Minio分布式集群部署——Swarm

最近研究minio分布式集群部署，发现网上大部分都是单服务器部署，而minio官方在github上现在也只提供了k8s和docker-compose的方式，网上有关与swarm启动minio集群的文章都不完整，这里我研究了近一周时间，终于是成功使用swarm部署minio集群，并用nginx统一入口

环境准备

四台虚拟机

• 192.168.2.38（管理节点）
• 192.168.2.81（工作节点）
• 192.168.2.100（工作节点）
• 192.168.2.102（工作节点）

时间同步

yum install -y ntp
cat <<EOF>>/var/spool/cron/root
00 12 * * * /usr/sbin/ntpdate -u ntp1.aliyun.com && /usr/sbin/hwclock -w
EOF
##查看计划任务
crontab -l
##手动执行
/usr/sbin/ntpdate -u ntp1.aliyun.com && /usr/sbin/hwclock -w

Docker

安装Docker

curl -sSL https://get.daocloud.io/docker | sh

启动docker

sudo systemctl start docker
sudo systemctl enable docker

搭建Swarm集群

打开防火墙(Swarm需要)

• 管理节点打开2377

  # manager
  firewall-cmd --zone=public --add-port=2377/tcp --permanent
  

• 所有节点打开以下端口

  # 所有node
  firewall-cmd --zone=public --add-port=7946/tcp --permanent
  firewall-cmd --zone=public --add-port=7946/udp --permanent
  firewall-cmd --zone=public --add-port=4789/tcp --permanent
  firewall-cmd --zone=public --add-port=4789/udp --permanent
  

• 所有节点重启防火墙

  # 所有node
  firewall-cmd --reload
  systemctl restart docker
  

• 图个方便可以直接关闭防火墙

创建Swarm

docker swarm init --advertise-addr your_manager_ip

加入Swarm

docker swarm join --token SWMTKN-1-
51b7t8whxn8j6mdjt5perjmec9u8qguxq8tern9nill737pra2-ejc5nw5f90oz6xldcbmrl2ztu
192.168.2.38:2377
#查看节点
docker node ls

服务约束

添加label

sudo docker node update --label-add minio1=true 管理节点名称
sudo docker node update --label-add minio2=true 工作节点名称
sudo docker node update --label-add minio3=true 工作节点名称
sudo docker node update --label-add minio4=true 工作节点名称

为MinIO创建Docker secret

echo "minioadmin" | docker secret create access_key -
echo "12345678" | docker secret create secret_key -

Minio集群部署文件

创建文件存放目录

管理节点执行

cd /root
mkdir minio-swarm
vi docker-compose-nginx.yml

Docker-Compose.yml

version: '3.7'

services:

  nginx:
    image: nginx
    hostname: minionginx
    volumes:
      - /root/minio-swarm/conf/swarm-nginx.conf:/etc/nginx/nginx.conf
    ports:
      - "9090:80"
      - "9000:9000"
    deploy:
      replicas: 1
      restart_policy:
        delay: 10s
        max_attempts: 10
        window: 60s
      placement:
        constraints:
          - node.labels.minio1==true
      resources:
        limits:
          # cpus: '0.001'
          memory: 1024M
        reservations:
          # cpus: '0.001'
          memory: 64M
      resources:
        limits:
          memory: 2048M
        reservations:
          memory: 512M
    networks:
      - minio_distributed
    depends_on:
      - minio1
      - minio2
      - minio3
      - minio4

  minio1:
    image: quay.io/minio/minio:RELEASE.2022-02-12T00-51-25Z
    hostname: minio1
    volumes:
      - data1-1:/data1
      - data1-2:/data2
    deploy:
      replicas: 1
      restart_policy:
        delay: 10s
        max_attempts: 10
        window: 60s
      placement:
        constraints:
          - node.labels.minio1==true
      resources:
        limits:
          memory: 2048M
        reservations:
          memory: 512M
    command: server --console-address ":9001" http://minio{1...4}/data{1...2}
    networks:
      - minio_distributed
    secrets:
      - secret_key
      - access_key
    healthcheck:
      test:
        [
          "CMD",
          "curl",
          "-f",
          "http://localhost:9000/minio/health/live"
        ]
      interval: 30s
      timeout: 20s
      retries: 3

  minio2:
    image: quay.io/minio/minio:RELEASE.2022-02-12T00-51-25Z
    hostname: minio2
    volumes:
      - data2-1:/data1
      - data2-2:/data2
    deploy:
      replicas: 1
      restart_policy:
        delay: 10s
        max_attempts: 10
        window: 60s
      placement:
        constraints:
          - node.labels.minio2==true
      resources:
        limits:
          memory: 2048M
        reservations:
          memory: 512M
    command: server --console-address ":9001" http://minio{1...4}/data{1...2}
    networks:
      - minio_distributed
    secrets:
      - secret_key
      - access_key
    healthcheck:
      test:
        [
          "CMD",
          "curl",
          "-f",
          "http://localhost:9000/minio/health/live"
        ]
      interval: 30s
      timeout: 20s
      retries: 3

  minio3:
    image: quay.io/minio/minio:RELEASE.2022-02-12T00-51-25Z
    hostname: minio3
    volumes:
      - data3-1:/data1
      - data3-2:/data2
    deploy:
      replicas: 1
      restart_policy:
        delay: 10s
        max_attempts: 10
        window: 60s
      placement:
        constraints:
          - node.labels.minio3==true
      resources:
        limits:
          memory: 2048M
        reservations:
          memory: 512M
    command: server --console-address ":9001" http://minio{1...4}/data{1...2}
    networks:
      - minio_distributed
    secrets:
      - secret_key
      - access_key
    healthcheck:
      test:
        [
          "CMD",
          "curl",
          "-f",
          "http://localhost:9000/minio/health/live"
        ]
      interval: 30s
      timeout: 20s
      retries: 3

  minio4:
    image: quay.io/minio/minio:RELEASE.2022-02-12T00-51-25Z
    hostname: minio4
    volumes:
      - data4-1:/data1
      - data4-2:/data2
    deploy:
      replicas: 1
      restart_policy:
        delay: 10s
        max_attempts: 10
        window: 60s
      placement:
        constraints:
          - node.labels.minio4==true
      resources:
        limits:
          memory: 2048M
        reservations:
          memory: 512M
    command: server --console-address ":9001" http://minio{1...4}/data{1...2}
    networks:
      - minio_distributed
    secrets:
      - secret_key
      - access_key
    healthcheck:
      test:
        [
          "CMD",
          "curl",
          "-f",
          "http://localhost:9000/minio/health/live"
        ]
      interval: 30s
      timeout: 20s
      retries: 3

volumes:
  data1-1:
  data1-2:
  data2-1:
  data2-2:
  data3-1:
  data3-2:
  data4-1:
  data4-2:


networks:
  minio_distributed:
    driver: overlay

secrets:
  secret_key:
    external: true
  access_key:
    external: true

说明：

• secret_key和access_key由上一步通过docker secret create xxx - 创建的
• 一个节点上最好部署一个minio服务，如果部署多个可能会出现磁盘被占用的情况，所以最好是增加机器再部署

nginx.conf

创建目录

cd /root/minio-swarm
mkdir conf
cd conf
vi swarm-nginx.conf

如果需要增加集群的节点，需要在Upstream中添加新节点的服务名：9001

user  nginx;
worker_processes  auto;

error_log  /var/log/nginx/error.log warn;
pid        /var/run/nginx.pid;

events {
    worker_connections  4096;
}

http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/log/nginx/access.log  main;
    sendfile        on;
    keepalive_timeout  65;

    upstream minio {
        server minio1:9000;
        server minio2:9000;
        server minio3:9000;
        server minio4:9000;
    }
    server {
        listen       9000;
        listen  [::]:9000;
        server_name  localhost;

        # To allow special characters in headers
        ignore_invalid_headers off;
        # Allow any size file to be uploaded.
        # Set to a value such as 1000m; to restrict file size to a specific value
        client_max_body_size 0;
        # To disable buffering
        proxy_buffering off;
        proxy_request_buffering off;

        location / {
            proxy_set_header Host $http_host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forwarded-Proto $scheme;

            proxy_connect_timeout 300;
            # Default is HTTP/1, keepalive is only enabled in HTTP/1.1
            proxy_http_version 1.1;
            proxy_set_header Connection "";
            chunked_transfer_encoding off;

            proxy_pass http://minio;
        }
    }
    # include /etc/nginx/conf.d/*.conf;

    upstream console {
        server minio1:9001;
        server minio2:9001;
        server minio3:9001;
        server minio4:9001;
    }

    server {
        listen       80;
        listen  [::]:80;
        server_name  localhost;

        # To allow special characters in headers
        ignore_invalid_headers off;
        # Allow any size file to be uploaded.
        # Set to a value such as 1000m; to restrict file size to a specific value
        client_max_body_size 0;
        # To disable buffering
        proxy_buffering off;

        location / {
            proxy_connect_timeout 5;
            proxy_send_timeout 10;
            proxy_read_timeout 10;

            proxy_set_header Host $http_host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forwarded-Proto $scheme;

            # Default is HTTP/1, keepalive is only enabled in HTTP/1.1
            proxy_http_version 1.1;
            proxy_set_header Connection "";
            chunked_transfer_encoding off;

            proxy_pass http://console;
        }
    }

}

部署

cd /root/minio-swarm
docker stack deploy -c docker-compose-nginx.yaml minio-swarm

测试

浏览器访问

一个节点宕机

模拟其中一个节点宕机，看能否正常读取数据（minio集群的写入需要至少4个在线磁盘，如果是两个节点的集群，一个节点宕机，那么集群就只能读取，无法写入）

如果是一个有N块硬盘的分布式Minio,只要有N/2硬盘在线，你的数据就是可以读取的。不过你需要至少有N/2+1个硬盘来创建新的对象。

[root@test redis-swarm2]# docker service ls
ID             NAME                      MODE         REPLICAS   IMAGE                                              PORTS
l317d9wc49tt   minio-swarm_minio1        replicated   1/1        quay.io/minio/minio:RELEASE.2022-02-12T00-51-25Z   
x2gj6ert03tj   minio-swarm_minio2        replicated   1/1        quay.io/minio/minio:RELEASE.2022-02-12T00-51-25Z   
z624sonlnk02   minio-swarm_minio3        replicated   1/1        quay.io/minio/minio:RELEASE.2022-02-12T00-51-25Z   
xu0gx8mbjocm   minio-swarm_minio4        replicated   1/1        quay.io/minio/minio:RELEASE.2022-02-12T00-51-25Z   
53w8cpjpe7wd   minio-swarm_nginx         replicated   1/1        nginx:latest                                       *:9000->9000/tcp, *:9090->80/tcp

现在将其中一台服务器停机处理，刷新浏览器

可以正常写入和读取数据

二个节点宕机

API可以正常读取数据。如果你退出了minio控制台回到登录界面，则无法再次登录进去。如果没有退出，那你仍然可以查看数据，但无法上传数据。

注意： 如果要模拟节点宕机，至少需要3台机器，如果是两台，模拟宕机一台，另一台是无法写入的