compose文件怎么在swarm中創建集群

這篇文章主要講解了“compose文件怎么在swarm中創建集群”，文中的講解內容簡單清晰，易于學習與理解，下面請大家跟著小編的思路慢慢深入，一起來研究和學習“compose文件怎么在swarm中創建集群”吧！

簡介

一、與上面環境不一致之處： 1.使用了etcd集群 集群地址為:10.0.102.214:2379,10.0.102.175:2379,10.0.102.191:2379 2.解決網絡通信問題： 讓docker stack 共用同一網絡：因stack部署時會以stack名稱創建網絡，所以保持相同stack名字在同一網絡中。如下所示： docker stack deploy -c compose_swarm_1.yaml stack名 docker stack deploy -c compose_swarm_2.yaml stack名 docker stack deploy -c compose_swarm_3.yamlstack名

準備工作

各個節點創建需要掛載的目錄及準備掛載的文件(如開啟binlog的Mariadb配置文件)
#mkdir /data1/
#mkdir /etc/my.cnf.d
在k8s-node-3節點上創建開啟binlog的mariadb配置文件
# vim /etc/my.cnf.d/bin-log.cnf
[mysqld]
log-bin= mysql-bin
log_slave_updates = 1
expire_logs_days = 20
server-id = 211

master節點部署操作

[root@node-1 ~]# docker stack deploy -c compose_swarm_1.yaml swarm_mariadb
 【見圖1】
[root@node-1 ~]# docker stack deploy -c compose_swarm_2.yaml swarm_mariadb
 【見圖2】
[root@node-1 ~]# docker stack deploy -c compose_swarm_3.yaml swarm_mariadb
  【見圖3】
檢查
[root@node-1 ~]#docker service ls
  【見圖4】

[root@node-1 ~]# docker stack ps swarm_mariadb
 【見圖5】
[root@node-1 ~]# docker exec -it a40e41c2219a /bin/bash
[root@a40e41c2219a /]# mysql -uroot –pmypassword
MariaDB [(none)]> show status like 'wsrep%';
  【見圖6】
或者
[root@node-1 ~]# mysql -uroot -pmypassword -h node-1 -P 3311 -e "show status like 'wsrep%';"

yaml文件

compose_swarm_1.yaml

version: '3'
services:
  mariadb_galera_swarm0:  #service名，3個文件各不相同
    deploy:
      replicas: 1  #每個service下只有1個容器
      restart_policy:
        condition: on-failure
        delay: 10s
        max_attempts: 10
        window: 100s
      placement:
        constraints: [node.hostname==node-1] #將容器運行在固定節點之上
      update_config:
        parallelism: 1
        delay: 3m # higher than SST duration

    image: severalnines/mariadb:10.1
    ports:
      - "3310:3306" #暴露的端口3個節點不能相同
    environment:  #創建集群相關環境務必一致
      CLUSTER_NAME: "mariadb_cluster_swarm"
      DISCOVERY_SERVICE: "10.0.102.218:2379,10.0.102.151:2379,10.0.102.162:2379"
      MYSQL_ROOT_PASSWORD: "mypassword"
      XTRABACKUP_PASSWORD: "mypassword"
    command:
      - --innodb_buffer_pool_size=256M
      - --max_connections=81
    volumes:  #根據需求進行掛載
      - /etc/my.cnf.d:/etc/my.cnf.d
      - /data2:/var/lib/mysql
      - /etc/localtime:/etc/localtime
    healthcheck:
      interval: 5s
      timeout: 3s
      retries: 200 # interval * retries > SST duration
    networks:
      - galera_swarm   #網絡
networks:
  galera_swarm:
    driver: overlay

compose_swarm_2.yaml

version: '3'
services:
  mariadb_galera_swarm1:
    deploy:
      replicas: 1
      restart_policy:
        condition: on-failure
        delay: 10s
        max_attempts: 10
        window: 100s
      placement:
        constraints: [node.hostname==node-2]
      update_config:
        parallelism: 1
        delay: 3m # higher than SST duration

    image: severalnines/mariadb:10.1
    ports:
      - "3312:3306"
    network_mode: host
    environment:
      CLUSTER_NAME: "mariadb_cluster_swarm"
      DISCOVERY_SERVICE: "10.0.102.218:2379,10.0.102.151:2379,10.0.102.162:2379"
      MYSQL_ROOT_PASSWORD: "mypassword"
      XTRABACKUP_PASSWORD: "mypassword"
    command:
      - --innodb_buffer_pool_size=256M
      - --max_connections=81
    volumes:
      - /etc/my.cnf.d:/etc/my.cnf.d
      - /data2:/var/lib/mysql
      - /etc/localtime:/etc/localtime
    healthcheck:
      interval: 5s
      timeout: 3s
      retries: 200 # interval * retries > SST duration
    networks:
      - galera_swarm
networks:
  galera_swarm:
    driver: overlay

compose_swarm_3.yaml

version: '3'
services:
  mariadb_galera_swarm2:
    deploy:
      replicas: 1
      restart_policy:
        condition: on-failure
        delay: 10s
        max_attempts: 10
        window: 100s
      placement:
        constraints: [node.hostname==node-3]
      update_config:
        parallelism: 1
        delay: 3m # higher than SST duration

    image: severalnines/mariadb:10.1
    ports:
      - "3313:3306"
    network_mode: host
    environment:
      CLUSTER_NAME: "mariadb_cluster_swarm"
      DISCOVERY_SERVICE: "10.0.102.218:2379,10.0.102.151:2379,10.0.102.162:2379"
      MYSQL_ROOT_PASSWORD: "mypassword"
      XTRABACKUP_PASSWORD: "mypassword"
    command:
      - --innodb_buffer_pool_size=256M
      - --max_connections=81
    volumes:
      - /etc/my.cnf.d:/etc/my.cnf.d
      - /data2:/var/lib/mysql
      - /etc/localtime:/etc/localtime
    healthcheck:
      interval: 5s
      timeout: 3s
      retries: 200 # interval * retries > SST duration
    networks:
      - galera_swarm
networks:
  galera_swarm:
    driver: overla

感謝各位的閱讀，以上就是“compose文件怎么在swarm中創建集群”的內容了，經過本文的學習后，相信大家對compose文件怎么在swarm中創建集群這一問題有了更深刻的體會，具體使用情況還需要大家實踐驗證。這里是億速云，小編將為大家推送更多相關知識點的文章，歡迎關注！