compose文件怎么在swarm中创建集群

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简介

一、与上面环境不一致之处： 1.使用了etcd集群 集群地址为:10.0.102.214:2379,10.0.102.175:2379,10.0.102.191:2379 2.解决网络通信问题： 让docker stack 共用同一网络：因stack部署时会以stack名称创建网络，所以保持相同stack名字在同一网络中。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

准备工作

各个节点创建需要挂载的目录及准备挂载的文件(如开启binlog的Mariadb配置文件)#mkdir /data1/#mkdir /etc/my.cnf.d在k8s-node-3节点上创建开启binlog的mariadb配置文件# vim /etc/my.cnf.d/bin-log.cnf[mysqld]log-bin= mysql-binlog_slave_updates = 1expire_logs_days = 20server-id = 211

master节点部署操作

[root@node-1 ~]# docker stack deploy -c compose_swarm_1.yaml swarm_mariadb 【见图1】[root@node-1 ~]# docker stack deploy -c compose_swarm_2.yaml swarm_mariadb 【见图2】[root@node-1 ~]# docker stack deploy -c compose_swarm_3.yaml swarm_mariadb  【见图3】检查[root@node-1 ~]#docker service ls  【见图4】[root@node-1 ~]# docker stack ps swarm_mariadb 【见图5】[root@node-1 ~]# docker exec -it a40e41c2219a /bin/bash[root@a40e41c2219a /]# mysql -uroot -pmypasswordMariaDB [(none)]> show status like 'wsrep%';  【见图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个文件各不相同    deploy:      replicas: 1  #每个service下只有1个容器      restart_policy:        condition: on-failure        delay: 10s        max_attempts: 10        window: 100s      placement:        constraints: [node.hostname==node-1] #将容器运行在固定节点之上      update_config:        parallelism: 1        delay: 3m # higher than SST duration    image: severalnines/mariadb:10.1    ports:      - "3310:3306" #暴露的端口3个节点不能相同    environment:  #创建集群相关环境务必一致      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:  #根据需求进行挂载      - /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   #网络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_swarmnetworks:  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_swarmnetworks:  galera_swarm:    driver: overla

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